Sample &
Buy
Product
Folder
Support &
Community
Tools &
Software
Technical
Documents
Reference
Design
MUX508, MUX509
SBAS758C – JANUARY 2016 – REVISED SEPTEMBER 2016
MUX50x
36-V, Low-Capacitance, Low-Charge-Injection, Precision, Analog Multiplexers
1 Features
3 Description
•
The MUX508 and MUX509 (MUX50x) are modern,
complementary metal-oxide semiconductor (CMOS),
analog multiplexers (muxes). The MUX508 offers 8:1
single-ended channels, whereas the MUX509 offers
differential 4:1 or dual 4:1 single-ended channels. The
MUX508 and MUX509 work equally well with either
dual supplies (±5 V to ±18 V) or a single supply (10 V
to 36 V). They also perform well with symmetric
supplies (such as VDD = 12 V, VSS = –12 V), and
unsymmetric supplies (such as VDD = 12 V, VSS =
–5 V). All digital inputs have TTL-logic compatible
thresholds, ensuring both TTL and CMOS logic
compatibility when operating in the valid supply
voltage range.
1
•
•
•
•
•
•
•
•
•
•
•
•
Low On-Capacitance
– MUX508: 9.4 pF
– MUX509: 6.7 pF
Low Input Leakage: 10 pA
Low Charge Injection: 0.3 pC
Rail-to-Rail Operation
Wide Supply Range: ±5 V to ±18 V, 10 V to 36 V
Low On-Resistance: 125 Ω
Transition Time: 92 ns
Break-Before-Make Switching Action
EN Pin Connectable to VDD
Logic Levels: 2 V to VDD
Low Supply Current: 45 µA
ESD Protection HBM: 2000 V
Industry-Standard TSSOP and SOIC Packages
The MUX508 and MUX509 have very low on and off
leakage currents, allowing these multiplexers to
switch signals from high input impedance sources
with minimal error. A low supply current of 45 µA
allows for use in portable applications.
Device Information(1)
2 Applications
•
•
•
•
•
•
PART NUMBER
Factory Automation and Industrial Process
Controls
Programmable Logic Controllers (PLC)
Analog Input Modules
ATE Test Equipment
Digital Multimeters
Battery Monitoring Systems
PACKAGE
MUX50x
BODY SIZE (NOM)
TSSOP (16)
5.00 mm × 4.40 mm
SOIC (16)
9.90 mm × 3.91 mm
(1) For all available packages, see the package option addendum
at the end of the data sheet.
Simplified Schematic
Charge Injection vs Source Voltage
Bridge Sensor
±
Thermocouple
MUX509
VINP
ADC
PGA/INA
+
VINM
Current
Sensing
VDD = 15 V
VSS = ±15 V
1
0
VDD = 10 V
VSS = ±10 V
±1
VDD = 12 V
VSS = 0 V
±2
Photo
LED Detector
Optical Sensor
Analog Inputs
Charge Injection (pC)
2
±15
Copyright © 2016, Texas Instruments Incorporated
±10
±5
0
5
Source Voltage (V)
10
15
C008
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
MUX508, MUX509
SBAS758C – JANUARY 2016 – REVISED SEPTEMBER 2016
www.ti.com
Table of Contents
1
2
3
4
5
6
7
Features ..................................................................
Applications ...........................................................
Description .............................................................
Revision History.....................................................
Device Comparison Table.....................................
Pin Configuration and Functions .........................
Specifications.........................................................
7.1
7.2
7.3
7.4
7.5
7.6
7.7
8
1
1
1
2
4
4
6
Absolute Maximum Ratings ...................................... 6
ESD Ratings.............................................................. 6
Recommended Operating Conditions....................... 6
Thermal Information .................................................. 7
Electrical Characteristics: Dual Supply ..................... 7
Electrical Characteristics: Single Supply................... 9
Typical Characteristics ............................................ 11
Parameter Measurement Information ................ 15
8.1
8.2
8.3
8.4
8.5
8.6
8.7
8.8
8.9
Truth Tables ............................................................
On-Resistance ........................................................
Off-Leakage Current ...............................................
On-Leakage Current ...............................................
Transition Time .......................................................
Break-Before-Make Delay.......................................
Turn-On and Turn-Off Time ....................................
Charge Injection ......................................................
Off Isolation .............................................................
15
16
16
17
17
18
19
20
21
8.10 Channel-to-Channel Crosstalk .............................. 21
8.11 Bandwidth ............................................................. 22
8.12 THD + Noise ......................................................... 22
9
Detailed Description ............................................ 23
9.1
9.2
9.3
9.4
Overview .................................................................
Functional Block Diagram .......................................
Feature Description.................................................
Device Functional Modes........................................
23
23
24
26
10 Applications and Implementation...................... 27
10.1 Application Information.......................................... 27
10.2 Typical Application ............................................... 27
11 Power-Supply Recommendations ..................... 29
12 Layout................................................................... 30
12.1 Layout Guidelines ................................................. 30
12.2 Layout Example .................................................... 30
13 Device and Documentation Support ................. 31
13.1
13.2
13.3
13.4
13.5
13.6
13.7
Documentation Support ........................................
Related Links ........................................................
Receiving Notification of Documentation Updates
Community Resources..........................................
Trademarks ...........................................................
Electrostatic Discharge Caution ............................
Glossary ................................................................
31
31
31
31
31
31
31
14 Mechanical, Packaging, and Orderable
Information ........................................................... 32
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision B (July 2016) to Revision C
Page
•
Added D (SOIC) package to document.................................................................................................................................. 1
•
Changed last Features bullet to include SOIC package ........................................................................................................ 1
•
Changed second sentence of Description section ................................................................................................................. 1
•
Added SOIC package to Device Information table ................................................................................................................ 1
•
Changed MUX509 description in Device Comparison Table ................................................................................................. 4
•
Added D package to Pin Configuration and Functions section .............................................................................................. 4
•
Added D package to Thermal Information table .................................................................................................................... 7
•
Changed Analog Switch, ID parameter in Electrical Characteristics: Dual Supply table: split parameter into ID(OFF) and
ID(ON) parameters, changed symbols, parameter names, and test conditions ........................................................................ 7
•
Changed On-resistance drift parameter in Electrical Characteristics: Single Supply table: changed VS value in test
conditions................................................................................................................................................................................ 9
•
Changed Analog Switch, ID parameter in Electrical Characteristics: Single Supply table: split parameter into ID(OFF)
and ID(ON) parameters, changed symbols, parameter names, and ID(ON) test conditions........................................................ 9
•
Changed Figure 26: changed switch symbol to a closed switch symbol ............................................................................. 16
•
Changed Figure 32: added 0 V line, flipped VS supply symbol............................................................................................ 20
•
Changed description of MUX509 in Overview section ........................................................................................................ 23
•
Changed Figure 42: changed OPA140 amplifier and charge kickback filter box ................................................................. 27
•
Added D package description to Layout Guidelines section ................................................................................................ 30
2
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: MUX508 MUX509
MUX508, MUX509
www.ti.com
SBAS758C – JANUARY 2016 – REVISED SEPTEMBER 2016
Changes from Revision A (March 2016) to Revision B
Page
•
Added TI Design .................................................................................................................................................................... 1
•
Changed Analog Switch, IS(OFF) and ID parameter specifications in Electrical Characteristics: Single Supply table.............. 9
Changes from Original (January 2016) to Revision A
•
Page
Changed from product preview to production data ................................................................................................................ 1
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: MUX508 MUX509
3
MUX508, MUX509
SBAS758C – JANUARY 2016 – REVISED SEPTEMBER 2016
www.ti.com
5 Device Comparison Table
PRODUCT
DESCRIPTION
MUX508
8-channel, single-ended analog multiplexer (8:1 mux)
MUX509
4-channel differential or dual 4:1 single-ended analog multiplexer (8:2 mux)
6 Pin Configuration and Functions
MUX508: PW and D Packages
16-Pin TSSOP and SOIC
Top View
A0
1
16
A1
EN
2
15
A2
VSS
3
14
GND
S1
4
13
VDD
S2
5
12
S5
S3
6
11
S6
S4
7
10
S7
D
8
9
S8
Pin Functions: MUX508
PIN
NAME
NO.
TYPE
DESCRIPTION
A0
1
Digital input
Address line 0
A1
16
Digital input
Address line 1
A2
15
Digital input
Address line 2
D
8
EN
2
GND
14
S1
4
Analog input or output Source pin 1. Can be an input or output.
S2
5
Analog input or output Source pin 2. Can be an input or output.
S3
6
Analog input or output Source pin 3. Can be an input or output.
S4
7
Analog input or output Source pin 4. Can be an input or output.
S5
12
Analog input or output Source pin 5. Can be an input or output.
S6
11
Analog input or output Source pin 6. Can be an input or output.
S7
10
Analog input or output Source pin 7. Can be an input or output.
S8
9
Analog input or output Source pin 8. Can be an input or output.
VDD
13
Power supply
Positive power supply. This pin is the most positive power-supply potential. For reliable
operation, connect a decoupling capacitor ranging from 0.1 µF to 10 µF between VDD
and GND.
VSS
3
Power supply
Negative power supply. This pin is the most negative power-supply potential. In singlesupply applications, this pin can be connected to ground. For reliable operation, connect a
decoupling capacitor ranging from 0.1 µF to 10 µF between VSS and GND.
4
Analog input or output Drain pin. Can be an input or output.
Digital input
Power supply
Active high digital input. When this pin is low, all switches are turned off. When this pin is
high, the A[2:0] logic inputs determine which switch is turned on.
Ground (0 V) reference
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: MUX508 MUX509
MUX508, MUX509
www.ti.com
SBAS758C – JANUARY 2016 – REVISED SEPTEMBER 2016
MUX509: PW and D Packages
16-Pin TSSOP and SOIC
Top View
A0
1
16
A1
EN
2
15
GND
VSS
3
14
VDD
S1A
4
13
S1B
S2A
5
12
S2B
S3A
6
11
S3B
S4A
7
10
S4B
DA
8
9
DB
Pin Functions: MUX509
PIN
NAME
NO.
TYPE
DESCRIPTION
A0
1
Digital input
Address line 0
A1
16
Digital input
Address line 1
DA
8
Analog input or output Drain pin A. Can be an input or output.
DB
9
Analog input or output Drain pin B. Can be an input or output.
EN
2
GND
15
S1A
4
Analog input or output Source pin 1A. Can be an input or output.
S2A
5
Analog input or output Source pin 2A. Can be an input or output.
S3A
6
Analog input or output Source pin 3A. Can be an input or output.
S4A
7
Analog input or output Source pin 4A. Can be an input or output.
S1B
13
Analog input or output Source pin 1B. Can be an input or output.
S2B
12
Analog input or output Source pin 2B. Can be an input or output.
S3B
11
Analog input or output Source pin 3B. Can be an input or output.
S4B
10
Analog input or output Source pin 4B. Can be an input or output.
VDD
14
Power supply
Positive power supply. This pin is the most positive power supply potential. For reliable
operation, connect a decoupling capacitor ranging from 0.1 µF to 10 µF between VDD
and GND.
VSS
3
Power supply
Negative power supply. This pin is the most negative power supply potential. In singlesupply applications, this pin can be connected to ground. For reliable operation, connect a
decoupling capacitor ranging from 0.1 µF to 10 µF between VSS and GND.
Digital input
Power supply
Active high digital input. When this pin is low, all switches are turned off. When this pin is
high, the A[1:0] logic inputs determine which pair of switches is turned on.
Ground (0 V) reference
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: MUX508 MUX509
5
MUX508, MUX509
SBAS758C – JANUARY 2016 – REVISED SEPTEMBER 2016
www.ti.com
7 Specifications
7.1 Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted) (1)
Supply voltage
MIN
MAX
VDD
–0.3
40
VSS
–40
0.3
VDD – VSS
Digital input pins (2)
Voltage
EN, A0, A1, A2 pins
Sx, SxA, SxB pins
Analog output pins (2)
D, DA, DB pins
VSS – 0.3
V
mA
–30
30
Voltage
VSS – 2
VDD + 2
V
Current
–30
30
mA
Voltage
VSS – 2
VDD + 2
V
Current
–30
30
mA
–55
150
Junction, TJ
150
Storage, Tstg
(2)
VDD + 0.3
Current
Operating, TA
(1)
V
40
Analog input pins (2)
Temperature
UNIT
–65
°C
150
Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings
only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended
Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
Only one pin at a time
7.2 ESD Ratings
VALUE
V(ESD)
(1)
(2)
Electrostatic discharge
Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001 (1)
2000
Charged-device model (CDM), per JEDEC specification JESD22-C101 (2)
500
UNIT
V
JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.
7.3 Recommended Operating Conditions
MIN
Dual supply
NOM
MAX
5
18
10
36
UNIT
VDD (1)
Positive power-supply voltage
VSS (2)
Negative power-supply voltage (dual supply)
–5
–18
V
VDD – VSS
Supply voltage
10
36
V
VS
Source pins voltage (3)
VSS
VDD
V
VD
Drain pins voltage
VSS
VDD
V
VEN
Enable pin voltage
VSS
VDD
V
VA
Address pins voltage
VSS
VDD
ICH
Channel current (TA = 25°C)
–25
25
mA
TA
Operating temperature
–40
125
°C
(1)
(2)
(3)
6
Single supply
V
V
When VSS = 0 V, VDD can range from 10 V to 36 V.
VDD and VSS can be any value as long as 10 V ≤ (VDD – VSS) ≤ 36 V, and VDD ≥ 5 V.
VS is the voltage on all the S pins.
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: MUX508 MUX509
MUX508, MUX509
www.ti.com
SBAS758C – JANUARY 2016 – REVISED SEPTEMBER 2016
7.4 Thermal Information
MUX50x
THERMAL METRIC (1)
PW (TSSOP)
D (SOIC)
16 PINS
16 PINS
UNIT
RθJA
Junction-to-ambient thermal resistance
103.8
78.3
°C/W
RθJC(top)
Junction-to-case (top) thermal resistance
36.8
37.2
°C/W
RθJB
Junction-to-board thermal resistance
49.8
35.7
°C/W
ψJT
Junction-to-top characterization parameter
2.7
8.2
°C/W
ψJB
Junction-to-board characterization parameter
49.1
35.4
°C/W
RθJC(bot)
Junction-to-case (bottom) thermal resistance
n/a
n/a
°C/W
(1)
For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics.
7.5 Electrical Characteristics: Dual Supply
at TA = 25°C, VDD = 15 V, and VSS = –15 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VDD
V
ANALOG SWITCH
Analog signal range
TA = –40°C to +125°C
VSS
VS = 0 V, ICH = 1 mA
RON
On-resistance
VS = ±10 V, ICH = 1 mA
125
170
145
200
TA = –40°C to +85°C
230
TA = –40°C to +125°C
250
2.4
ΔRON
On-resistance mismatch
between channels
VS = ±10 V, ICH = 1 mA
On-resistance flatness
On-resistance drift
VS = 10 V, 0 V, –10 V
9
TA = –40°C to +125°C
11
53
TA = –40°C to +125°C
58
VS = 0 V
0.52
Input leakage current
Switch state is off,
VS = ±10 V, VD = ±10 V (1)
Output off leakage current
Switch state is off,
VS = ±10 V, VD = ±10 V (1)
–10
10
–25
25
TA = -40°C to +85°C
–10
10
TA = -40°C to +125°C
–50
50
TA = –40°C to +85°C
–10
10
TA = –40°C to +125°C
–50
50
–1
ID(ON)
Output on leakage current
Switch state is on,
VD = ±10 V, VS = floating
%/°C
TA = –40°C to +125°C
0.01
0.01
Ω
1
TA = –40°C to +85°C
–1
ID(OFF)
0.01
Ω
45
TA = –40°C to +85°C
–1
IS(OFF)
6
TA = –40°C to +85°C
22
RFLAT
Ω
nA
1
nA
1
nA
LOGIC INPUT
VIH
High-level input voltage
VIL
Low-level input voltage
ID
Input current
(1)
2.0
V
0.8
V
0.15
µA
When VS is positive, VD is negative, and vice versa.
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: MUX508 MUX509
7
MUX508, MUX509
SBAS758C – JANUARY 2016 – REVISED SEPTEMBER 2016
www.ti.com
Electrical Characteristics: Dual Supply (continued)
at TA = 25°C, VDD = 15 V, and VSS = –15 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
88
136
UNIT
SWITCH DYNAMICS (2)
tON
Enable turn-on time
VS = ±10 V, RL = 300 Ω,
CL= 35 pF
TA = –40°C to +85°C
144
TA = –40°C to +125°C
151
63
tOFF
Enable turn-off time
VS = ±10 V, RL = 300 Ω,
CL= 35 pF
tt
Transition time
83
TA = –40°C to +125°C
90
151
TA = –40°C to +125°C
157
Break-before-make time
delay
VS = 10 V, RL = 300 Ω, CL= 35 pF, TA = –40°C to +125°C
QJ
Charge injection
CL = 1 nF, RS = 0 Ω
Off-isolation
VS = 0 V
30
54
±0.6
RL = 50 Ω, VS = 1 VRMS,
f = 1 MHz
Nonadjacent channel to D, DA, DB
–96
Adjacent channel to D, DA, DB
–85
Channel-to-channel
crosstalk
RL = 50 Ω, VS = 1 VRMS,
f = 1 MHz
Nonadjacent channels
–96
Adjacent channels
–88
Input off-capacitance
f = 1 MHz, VS = 0 V
CD(OFF)
Output off-capacitance
f = 1 MHz, VS = 0 V
CD(ON)
Input/Output oncapacitance
f = 1 MHz, VS = 0 V
ns
ns
0.3
VS = –15 V to +15 V
ns
143
TA = –40°C to +85°C
tBBM
CS(OFF)
75
TA = –40°C to +85°C
92
VS = 10 V, RL = 300 Ω,
CL= 35 pF,
ns
pC
dB
dB
2.4
2.9
MUX508
7.5
8.4
MUX509
4.3
5
MUX508
9.4
10.6
MUX509
6.7
7.7
45
59
pF
pF
pF
POWER SUPPLY
VDD supply current
All VA = 0 V or 3.3 V,
VS = 0 V, VEN = 3.3 V,
TA = –40°C to +85°C
62
TA = –40°C to +125°C
83
25
VSS supply current
(2)
8
All VA = 0 V or 3.3 V,
VS = 0 V, VEN = 3.3 V,
µA
34
TA = –40°C to +85°C
37
TA = –40°C to +125°C
57
µA
Specified by design, not production tested.
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: MUX508 MUX509
MUX508, MUX509
www.ti.com
SBAS758C – JANUARY 2016 – REVISED SEPTEMBER 2016
7.6 Electrical Characteristics: Single Supply
at TA = 25°C, VDD = 12 V, and VSS = 0 V (unless otherwise noted) (1)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VDD
V
ANALOG SWITCH
Analog signal range
TA = –40°C to +125°C
VSS
235
RON
On-resistance
VS = 10 V, ICH = 1 mA
TA = –40°C to +85°C
390
TA = –40°C to +125°C
430
3.1
ΔRON
On-resistance match
On-resistance drift
IS(OFF)
ID(OFF)
ID(ON)
Input leakage current
Output off leakage current
Output on leakage current
VS = 10 V, ICH = 1 mA
340
12
TA = –40°C to +85°C
19
TA = –40°C to +125°C
23
VS = 10 V
0.47
–1
0.01
%/°C
TA = –40°C to +85°C
–10
10
TA = –40°C to +125°C
–25
25
Switch state is off,
VS = 1 V and VD = 10 V,
or VS = 10 V and VD = 1 V (2)
TA = –40°C to +85°C
–10
10
TA = –40°C to +125°C
–50
50
Switch state is on,
VD = 1 V and 10 V,
VS = floating
TA = –40°C to +85°C
–10
10
TA = –40°C to +125°C
–50
50
–1
0.01
0.01
Ω
1
Switch state is off,
VS = 1 V and VD = 10 V,
or VS = 10 V and VD = 1 V (2)
–1
Ω
nA
1
nA
1
nA
LOGIC INPUT
VIH
High-level input voltage
VIL
Low-level input voltage
ID
Input current
2.0
V
0.8
V
0.15
µA
SWITCH DYNAMIC CHARACTERISTICS
85
tON
Enable turn-on time
VS = 8 V, RL = 300 Ω,
CL= 35 pF
145
TA = –40°C to +125°C
149
48
tOFF
Enable turn-off time
VS = 8 V, RL = 300 Ω,
CL= 35 pF
94
TA = –40°C to +125°C
102
Transition time
87
TA = –40°C to +85°C
153
VS = 8 V, RL = 300 Ω,
CL= 35 pF,
TA = –40°C to +125°C
155
Break-before-make time
delay
VS = 8 V, RL = 300 Ω, CL= 35 pF, TA = –40°C to +125°C
QJ
Charge injection
CL = 1 nF, RS = 0 Ω
Off-isolation
RL = 50 Ω, VS = 1 VRMS,
f = 1 MHz
Nonadjacent channel to D, DA, DB
-96
Adjacent channel to D, DA, DB
-85
Channel-to-channel
crosstalk
RL = 50 Ω, VS = 1 VRMS,
f = 1 MHz
Nonadjacent channels
–96
Adjacent channels
-88
Input off-capacitance
f = 1 MHz, VS = 6 V
CS(OFF)
CD(OFF)
Output off-capacitance
f = 1 MHz, VS = 6 V
CD(ON)
Input/Output oncapacitance
f = 1 MHz, VS = 6 V
(1)
(2)
30
54
VS = 6 V
0.15
VS = 0 V to 12 V,
±0.4
ns
147
VS = 8 V, RL = 300 Ω,
CL= 35 pF,
tBBM
ns
83
TA = –40°C to +85°C
VS = 8 V, CL= 35 pF
tt
140
TA = –40°C to +85°C
ns
ns
pC
dB
dB
2.7
3.2
MUX508
9.1
10
MUX509
5
5.7
MUX508
10.8
12
MUX509
6.9
8
pF
pF
pF
Specified by design, not production tested.
When VS is 1 V, VD is 10 V, and vice versa.
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: MUX508 MUX509
9
MUX508, MUX509
SBAS758C – JANUARY 2016 – REVISED SEPTEMBER 2016
www.ti.com
Electrical Characteristics: Single Supply (continued)
at TA = 25°C, VDD = 12 V, and VSS = 0 V (unless otherwise noted)(1)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
42
53
UNIT
POWER SUPPLY
VDD supply current
All VA = 0 V or 3.3 V,
VS= 0 V, VEN = 3.3 V
TA = –40°C to +85°C
56
TA = –40°C to +125°C
77
23
VSS supply current
10
All VA = 0 V or 3.3 V,
VS = 0 V, VEN = 3.3 V
38
TA = –40°C to +85°C
31
TA = –40°C to +125°C
51
Submit Documentation Feedback
µA
µA
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: MUX508 MUX509
MUX508, MUX509
www.ti.com
SBAS758C – JANUARY 2016 – REVISED SEPTEMBER 2016
7.7 Typical Characteristics
at TA = 25°C, VDD = 15 V, and VSS = –15 V (unless otherwise noted)
250
250
TA = 125ƒC
VDD = 13.5 V VDD = 15 V
VSS = ±13.5 V VSS = ±15 V
150
100
50
VDD = 18 V
VSS = ±18 V
TA = 85ƒC
200
On Resistance (Ÿ)
On Resistance (Ÿ)
200
150
TA = 25ƒC
100
50
VDD = 16.5 V
VSS = ±16.5 V
TA = ±40ƒC
TA = 0ƒC
0
0
±20
±15
±10
±5
0
5
10
15
Source or Drain Voltage (V)
20
±18
±12
0
±6
6
12
Source or Drain Voltage (V)
C001
18
C002
VDD = 15 V, VSS = –15 V
Figure 1. On-Resistance vs Source or Drain Voltage
Figure 2. On-Resistance vs Source or Drain Voltage
700
700
VDD = 5 V
VSS = ±5 V
600
VDD = 6 V
VSS = ±6 V
500
On Resistance (Ÿ)
On Resistance (Ÿ)
600
400
300
200
VDD = 7 V
VSS = ±7 V
100
500
TA = 85ƒC
TA = 125ƒC
400
300
TA = 25ƒC
200
100
TA = 0ƒC
TA = ±40ƒC
0
0
±8
±6
±4
±2
0
2
4
6
Source or Drain Voltage (V)
0
8
2
4
6
8
10
Source or Drain Voltage (V)
C003
12
C004
VDD = 12 V, VSS = 0 V
Figure 3. On-Resistance vs Source or Drain Voltage
Figure 4. On-Resistance vs Source or Drain Voltage
700
250
VDD = 30 V
VSS = 0 V
On Resistance (Ÿ)
On Resistance (Ÿ)
200
150
100
50
VDD = 36 V
VSS = 0 V
VDD = 33 V
VSS = 0 V
VDD = 10 V
VSS = 0 V
600
VDD = 12 V
VSS = 0 V
500
400
VDD = 14 V
VSS = 0 V
300
200
100
0
0
0
6
12
18
24
30
Source or Drain Voltage (V)
36
0
Figure 5. On-Resistance vs Source or Drain Voltage
2
4
6
8
10
12
Source or Drain Voltage (V)
C023
14
C005
Figure 6. On-Resistance vs Source or Drain Voltage
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: MUX508 MUX509
11
MUX508, MUX509
SBAS758C – JANUARY 2016 – REVISED SEPTEMBER 2016
www.ti.com
Typical Characteristics (continued)
250
250
200
200
On Resistance (Ÿ)
On Resistance (Ÿ)
at TA = 25°C, VDD = 15 V, and VSS = –15 V (unless otherwise noted)
150
100
150
100
50
50
0
0
0
6
12
18
24
Source or Drain Voltage (V)
±12
0
±6
6
VDD = 24 V, VSS = 0 V
C024
VDD = 12 V, VSS = –12 V
Figure 7. On-Resistance vs Source or Drain Voltage
Figure 8. On-Resistance vs Source or Drain Voltage
900
900
ID(ON)+
ID(ON)+
600
Leakage Current (pA)
600
Leakage Current (pA)
12
Source or Drain Voltage (V)
C029
ID(OFF)+
300
IS(OFF)+
0
IS(OFF)±
±300
ID(OFF)±
±600
IS(OFF)+
300
ID(OFF)+
0
±300
IS(OFF)±
ID(OFF)±
±600
ID(ON)±
ID(ON)±
±900
±900
±75
±50
±25
0
25
50
75
100
125
Temperature (ƒC)
150
±75
±50
±25
50
75
100
125
150
C007
VDD = 12 V, VSS = 0 V
Figure 9. Leakage Current vs Temperature
Figure 10. Leakage Current vs Temperature
2
2
VDD = 15 V
VSS = ±15 V
1
Charge Injection (pC)
Charge Injection (pC)
25
Temperature (ƒC)
VDD = 15 V, VSS = –15 V
0
VDD = 10 V
VSS = ±10 V
±1
VDD = 12 V
VSS = 0 V
1
VDD = 15 V
VSS = ±15 V
0
VDD = 10 V
VSS = ±10 V
±1
VDD = 12 V
VSS = 0 V
±2
±2
±15
±10
±5
0
5
10
Source Voltage (V)
15
±15
±10
±5
0
5
10
Source Voltage (V)
C008
MUX508, source-to-drain
15
C025
MUX509, source-to-drain
Figure 11. Charge Injection vs Source Voltage
12
0
C006
Figure 12. Charge Injection vs Source Voltage
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: MUX508 MUX509
MUX508, MUX509
www.ti.com
SBAS758C – JANUARY 2016 – REVISED SEPTEMBER 2016
Typical Characteristics (continued)
at TA = 25°C, VDD = 15 V, and VSS = –15 V (unless otherwise noted)
9
VDD = 15 V
VSS = ±15 V
6
Charge Injection (pC)
Turn On and Turn Off Times (ns)
150
VDD = 10 V
VSS = ±10 V
3
0
VDD = 12 V
VSS = 0 V
±3
±6
tON (VDD = 15 V, VSS = ±15 V)
120
tON (VDD = 12 V, VSS = 0 V)
90
60
30
tOFF (VDD = 15 V, VSS = ±15 V)
tOFF (VDD = 12 V, VSS = 0 V)
0
±9
±15
±10
0
±5
5
10
Drain voltage (V)
15
±75
±50
±25
0
25
50
75
100
125
Temperature (ƒC)
C011
150
C010
Drain-to-source
Figure 14. Turn-On and Turn-Off Times vs Temperature
0
0
±20
±20
Adjacent Channel to D (Output)
±40
Adjacent Channels
±40
Crosstalk (dB)
Off Isolation (dB)
Figure 13. Charge Injection vs Source or Drain Voltage
±60
±80
±60
±80
±100
±100
±120
Non-Adjacent Channels
±120
Non-Adjacent Channel to D (Output)
±140
±140
10k
100k
1M
10M
100M
Frequency (Hz)
1G
10k
1M
10M
100M
Frequency (Hz)
Figure 15. Off Isolation vs Frequency
1G
C013
Figure 16. Crosstalk vs Frequency
100
3
VDD = 15 V
VSS = ±15 V
On Response (dB)
10
THD+N (%)
100k
C012
VDD = 5 V
VSS = ±5 V
1
0.1
0
±3
±6
0.01
10
100
1k
10k
Frequency (Hz)
100k
±9
100k
1M
Figure 17. THD+N vs Frequency
10M
100M
Frequency (Hz)
C014
1G
C018
Figure 18. On Response vs Frequency
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: MUX508 MUX509
13
MUX508, MUX509
SBAS758C – JANUARY 2016 – REVISED SEPTEMBER 2016
www.ti.com
Typical Characteristics (continued)
18
18
15
15
Capacitance (pF)
Capacitance (pF)
at TA = 25°C, VDD = 15 V, and VSS = –15 V (unless otherwise noted)
12
CD(ON)
9
6
CD(OFF)
9
CD(ON)
6
CD(OFF)
CS(OFF)
3
12
3
CS(OFF)
0
0
±15
±10
±5
0
5
10
Source Voltage (V)
15
±15
±5
0
5
10
Source or Drain Voltage (V)
MUX508, VDD = 15 V, VSS = –15 V
15
C026
MUX509, VDD = 15 V, VSS = –15 V
Figure 19. Capacitance vs Source Voltage
Figure 20. Capacitance vs Source Voltage
18
18
15
15
Capacitance (pF)
Capacitance (pF)
±10
C015
12
CD(ON)
9
6
12
CD(OFF)
9
CD(ON)
6
CD(OFF)
CS(OFF)
3
3
0
CS(OFF)
0
0
5
10
15
20
25
Source Voltage (V)
30
0
10
15
20
25
Source or Drain Voltage (V)
MUX508, VDD = 30 V, VSS = 0 V
30
C028
MUX509, VDD = 30 V, VSS = 0 V
Figure 21. Capacitance vs Source Voltage
Figure 22. Capacitance vs Source Voltage
18
18
15
15
CD(ON)
12
Capacitance (pF)
Capacitance (pF)
5
C016
9
6
CD(OFF)
CS(OFF)
3
12
CD(OFF)
9
CD(ON)
6
3
CS(OFF)
0
0
0
3
6
9
Source or Drain Voltage (V)
MUX508, VDD = 12 V, VSS = 0 V
Figure 23. Capacitance vs Source Voltage
14
12
0
3
6
9
Source or Drain Voltage (V)
C022
12
C027
MUX509, VDD = 12 V, VSS = 0 V
Figure 24. Capacitance vs Source Voltage
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: MUX508 MUX509
MUX508, MUX509
www.ti.com
SBAS758C – JANUARY 2016 – REVISED SEPTEMBER 2016
Typical Characteristics (continued)
at TA = 25°C, VDD = 15 V, and VSS = –15 V (unless otherwise noted)
25
20
Drain Current (mA)
15
10
5
0
±5
±10
±15
±20
±25
±25
±20
±15
±10
±5
0
5
10
15
20
Source Current (mA)
25
C021
Figure 25. Source Current vs Drain Current
8 Parameter Measurement Information
8.1 Truth Tables
Table 1 and Table 2 show the truth tables for the MUX508 and MUX509, respectively.
Table 1. MUX508 Truth Table
(1)
EN
A2
A1
A0
STATE
0
X (1)
X (1)
X (1)
All channels are off
1
0
0
0
Channel 1 on
1
0
0
1
Channel 2 on
1
0
1
0
Channel 3 on
1
0
1
1
Channel 4 on
1
1
0
0
Channel 5 on
1
1
0
1
Channel 6 on
1
1
1
0
Channel 7 on
1
1
1
1
Channel 8 on
X denotes don't care..
Table 2. MUX509 Truth Table
EN
0
(1)
A1
A0
(1)
(1)
X
X
STATE
All channels are off
1
0
0
Channels 1A and 1B on
1
0
1
Channels 2A and 2B on
1
1
0
Channels 3A and 3B on
1
1
1
Channels 4A and 4B on
X denotes don't care.
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: MUX508 MUX509
15
MUX508, MUX509
SBAS758C – JANUARY 2016 – REVISED SEPTEMBER 2016
www.ti.com
8.2 On-Resistance
The on-resistance of the MUX50x is the ohmic resistance across the source (Sx, SxA, or SxB) and drain (D, DA,
or DB) pins of the device. The on-resistance varies with input voltage and supply voltage. The symbol RON is
used to denote on-resistance. The measurement setup used to measure RON is shown in Figure 26. Voltage (V)
and current (ICH) are measured using this setup, and RON is computed as shown in Equation 1.
V
D
S
ICH
VS
Figure 26. On-Resistance Measurement Setup
RON = V / ICH
(1)
8.3 Off-Leakage Current
There are two types of leakage currents associated with a switch during the off state:
1. Source off-leakage current
2. Drain off-leakage current
Source off-leakage current is defined as the leakage current flowing into or out of the source pin when the switch
is off. This current is denoted by the symbol IS(OFF).
Drain off-leakage current is defined as the leakage current flowing into or out of the drain pin when the switch is
off. This current is denoted by the symbol ID(OFF).
The setup used to measure both types of off-leakage currents is shown in Figure 27.
ID (OFF)
Is (OFF)
A
S
D
VS
A
VD
Figure 27. Off-Leakage Measurement Setup
16
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: MUX508 MUX509
MUX508, MUX509
www.ti.com
SBAS758C – JANUARY 2016 – REVISED SEPTEMBER 2016
8.4 On-Leakage Current
On-leakage current is defined as the leakage current that flows into or out of the drain pin when the switch is in
the on state. The source pin is left floating during the measurement. Figure 28 shows the circuit used for
measuring the on-leakage current, denoted by ID(ON).
ID (ON)
D
S
A
NC
NC = No Connection
VD
Figure 28. On-Leakage Measurement Setup
8.5 Transition Time
Transition time is defined as the time taken by the output of the MUX50x to rise or fall to 90% of the transition
after the digital address signal has fallen or risen to the 50% of the transition. Figure 29 shows the setup used to
measure transition time, denoted by the symbol tt.
VDD
VSS
VDD
VSS
3V
Address
Signal (VIN)
50%
50%
S1
VS1
A0
0V
A1
S2-S7
VIN
A2
tt
tt
VS1
VS8
S8
90%
Output
MUX508
Output
2V
EN
D
GND
300 Ÿ
35 pF
90%
VS8
Copyright © 2016, Texas Instruments Incorporated
Figure 29. Transition-Time Measurement Setup
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: MUX508 MUX509
17
MUX508, MUX509
SBAS758C – JANUARY 2016 – REVISED SEPTEMBER 2016
www.ti.com
8.6 Break-Before-Make Delay
Break-before-make delay is a safety feature that prevents two inputs from connecting when the MUX50x is
switching. The MUX50x output first breaks from the on-state switch before making the connection with the next
on-state switch. The time delay between the break and the make is known as a break-before-make delay.
Figure 30 shows the setup used to measure break-before-make delay, denoted by the symbol tBBM.
VDD
VSS
VDD
VSS
3V
Address
Signal (VIN)
S1
VS
A0
0V
A1
VIN
S2-S7
A2
S8
MUX508
Output
80%
Output
80%
2V
EN
D
GND
300 Ÿ
35 pF
tBBM
Copyright © 2016, Texas Instruments Incorporated
Figure 30. Break-Before-Make Delay Measurement Setup
18
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: MUX508 MUX509
MUX508, MUX509
www.ti.com
SBAS758C – JANUARY 2016 – REVISED SEPTEMBER 2016
8.7 Turn-On and Turn-Off Time
Turn-on time is defined as the time taken by the output of the MUX50x to rise to a 90% final value after the
enable signal has risen to a 50% final value. Figure 31 shows the setup used to measure turn-on time. Turn-on
time is denoted by the symbol tON.
Turn-off time is defined as the time taken by the output of the MUX50x to fall to a 10% initial value after the
enable signal has fallen to a 50% initial value. Figure 31 shows the setup used to measure turn-off time. Turn-off
time is denoted by the symbol tOFF.
VDD
VSS
VDD
VSS
3V
Enable
Drive (VIN)
50%
50%
S1
A0
VS
A1
S2-S8
0V
A2
tOFF (EN)
tON (EN)
MUX508
0.9 VS
Output
Output
D
EN
GND
0.1 VS
VIN
300 Ÿ
35 pF
Copyright © 2016, Texas Instruments Incorporated
Figure 31. Turn-On and Turn-Off Time Measurement Setup
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: MUX508 MUX509
19
MUX508, MUX509
SBAS758C – JANUARY 2016 – REVISED SEPTEMBER 2016
www.ti.com
8.8 Charge Injection
The MUX50x have a simple transmission-gate topology. Any mismatch in capacitance between the NMOS and
PMOS transistors results in a charge injected into the drain or source during the falling or rising edge of the gate
signal. The amount of charge injected into the source or drain of the device is known as charge injection, and is
denoted by the symbol QINJ. Figure 32 shows the setup used to measure charge injection.
VDD
VSS
VDD
VSS
A0
3V
A1
VEN
A2
MUX508
0V
RS
S
D
VOUT
EN
VOUT
VOUT
CL
VS
GND
QINJ = CL ×
VOUT
1 nF
VEN
Copyright © 2016, Texas Instruments Incorporated
Figure 32. Charge-Injection Measurement Setup
20
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: MUX508 MUX509
MUX508, MUX509
www.ti.com
SBAS758C – JANUARY 2016 – REVISED SEPTEMBER 2016
8.9 Off Isolation
Off isolation is defined as the voltage at the drain pin (D, DA, or DB) of the MUX50x when a 1-VRMS signal is
applied to the source pin (Sx, SxA, or SxB) of an off-channel. Figure 33 shows the setup used to measure off
isolation. Use Equation 2 to compute off isolation.
VDD
VSS
0.1 µF
0.1 µF
Network Analyzer
VSS
VDD
50
S
50 Ÿ
VS
D
VOUT
RL
50 Ÿ
GND
Figure 33. Off Isolation Measurement Setup
Off Isolation
§V
·
20 ˜ Log ¨ OUT ¸
V
© S ¹
(2)
8.10 Channel-to-Channel Crosstalk
Channel-to-channel crosstalk is defined as the voltage at the source pin (Sx, SxA, or SxB) of an off-channel,
when a 1-VRMS signal is applied at the source pin of an on-channel. Figure 34 shows the setup used to measure,
and Equation 3 is the equation used to compute, channel-to-channel crosstalk.
VSS
VDD
0.1 µF
0.1 µF
VSS
VDD
Network Analyzer
VOUT
S1
RL
50 Ÿ
R
50 Ÿ
S2
VS
GND
Figure 34. Channel-to-Channel Crosstalk Measurement Setup
Channel-to-Channel Crosstalk
§V
·
20 ˜ Log ¨ OUT ¸
© VS ¹
(3)
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: MUX508 MUX509
21
MUX508, MUX509
SBAS758C – JANUARY 2016 – REVISED SEPTEMBER 2016
www.ti.com
8.11 Bandwidth
Bandwidth is defined as the range of frequencies that are attenuated by < 3 dB when the input is applied to the
source pin of an on-channel and the output is measured at the drain pin of the MUX50x. Figure 35 shows the
setup used to measure bandwidth of the mux. Use Equation 4 to compute the attenuation.
VSS
VDD
0.1 µF
0.1 µF
VSS
VDD
Network Analyzer
V1
50
S
VS
V2
D
VOUT
RL
50 Ÿ
GND
Figure 35. Bandwidth Measurement Setup
Attenuation
§V ·
20 ˜ Log ¨ 2 ¸
© V1 ¹
(4)
8.12 THD + Noise
The total harmonic distortion (THD) of a signal is defined as the ratio of the sum of the powers of all harmonic
components to the power of the fundamental frequency at the mux output. The on-resistance of the MUX50x
varies with the amplitude of the input signal and results in distortion when the drain pin is connected to a lowimpedance load. Total harmonic distortion plus noise is denoted as THD+N. Figure 36 shows the setup used to
measure the THD+N of the MUX50x.
VSS
VDD
0.1 µF
0.1 µF
Audio Precision
VSS
VDD
RS
S
IN
VIN
VS
5 Vrms
D
VOUT
GND
RL
10 NŸ
Figure 36. THD+N Measurement Setup
22
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: MUX508 MUX509
MUX508, MUX509
www.ti.com
SBAS758C – JANUARY 2016 – REVISED SEPTEMBER 2016
9 Detailed Description
9.1 Overview
The MUX50x are a family of analog multiplexers. The Functional Block Diagram section provides a top-level
block diagram of both the MUX508 and MUX509. The MUX508 is an eight-channel, single-ended, analog mux.
The MUX509 is a four-channel, differential or dual 4:1, single-ended, analog mux. Each channel is turned on or
turned off based on the state of the address lines and enable pin.
9.2 Functional Block Diagram
MUX509
MUX508
S1
S1A
S2
S2A
S3
S3A
S4
S4A
DA
S5
S1B
DB
S6
S2B
S7
S3B
S8
S4B
D
1-of-4
Decoder
1-of-8
Decoder
A0
A1
A2
A0
EN
A1
EN
Copyright © 2016, Texas Instruments Incorporated
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: MUX508 MUX509
23
MUX508, MUX509
SBAS758C – JANUARY 2016 – REVISED SEPTEMBER 2016
www.ti.com
9.3 Feature Description
9.3.1 Ultralow Leakage Current
The MUX50x provide extremely low on- and off-leakage currents. The MUX50x are capable of switching signals
from high source-impedance inputs into a high input-impedance op amp with minimal offset error because of
these ultralow leakage currents. Figure 37 shows typical leakage currents of the MUX50x versus temperature.
900
ID(ON)+
Leakage Current (pA)
600
ID(OFF)+
300
IS(OFF)+
0
IS(OFF)±
±300
ID(OFF)±
±600
ID(ON)±
±900
±75
±50
±25
0
25
50
75
100
125
150
Temperature (ƒC)
C006
Figure 37. Leakage Current vs Temperature
9.3.2 Ultralow Charge Injection
The MUX50x have a simple transmission gate topology, as shown in Figure 38. Any mismatch in the stray
capacitance associated with the NMOS and PMOS transistors creates an output level change whenever the
switch is opened or closed.
OFF ON
CGSN
CGDN
S
D
CGSP
CGDP
OFF ON
Figure 38. Transmission Gate Topology
24
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: MUX508 MUX509
MUX508, MUX509
www.ti.com
SBAS758C – JANUARY 2016 – REVISED SEPTEMBER 2016
Feature Description (continued)
The MUX50x have special charge-injection cancellation circuitry that reduces the source-to-drain charge injection
to as low as 0.3 pC at VS = 0 V, and ±0.6 pC in the full signal range, as shown in Figure 39.
Charge Injection (pC)
2
1
VDD = 15 V
VSS = ±15 V
0
VDD = 10 V
VSS = ±10 V
±1
VDD = 12 V
VSS = 0 V
±2
±15
±10
±5
0
5
10
Source Voltage (V)
15
C025
Figure 39. Source-to-Drain Charge Injection vs Source or Drain voltage
The drain-to-source charge injection becomes important when the device is used as a demultiplexer (demux),
where D becomes the input and Sx becomes the output. Figure 40 shows the drain-to-source charge injection
across the full signal range.
9
VDD = 15 V
VSS = ±15 V
Charge Injection (pC)
6
VDD = 10 V
VSS = ±10 V
3
0
VDD = 12 V
VSS = 0 V
±3
±6
±9
±15
±10
±5
0
5
Drain voltage (V)
10
15
C011
Figure 40. Drain-to-Source Charge Injection vs Source or Drain voltage
9.3.3 Bidirectional Operation
The MUX50x are operable as both a mux or demux. The source (Sx, SxA, SxB) and drain (D, DA, DB) pins of
the MUX50x are used either as input or output. Each MUX50x channel has very similar characteristics in both
directions.
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: MUX508 MUX509
25
MUX508, MUX509
SBAS758C – JANUARY 2016 – REVISED SEPTEMBER 2016
www.ti.com
Feature Description (continued)
9.3.4 Rail-to-Rail Operation
A valid analog signal for the MUX50x ranges from VSS to VDD. The input signal to the MUX50x can swing from
VSS to VDD without any significant degradation in performance. The on-resistance of the MUX50x varies with
input signal, as shown in Figure 41.
250
VDD = 13.5 V VDD = 15 V
VSS = ±13.5 V VSS = ±15 V
On Resistance (Ÿ)
200
150
100
50
VDD = 18 V
VSS = ±18 V
VDD = 16.5 V
VSS = ±16.5 V
0
±20
±15
±10
±5
0
5
10
Source or Drain Voltage (V)
15
20
C001
Figure 41. On-Resistance vs Source or Drain Voltage
9.4 Device Functional Modes
When the EN pin of the MUX50x is pulled high, one of the switches is closed based on the state of the address
lines. When the EN pin is pulled low, all the switches are in an open state irrespective of the state of the address
lines. The EN pin can be connected to VDD (as high as 36 V).
26
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: MUX508 MUX509
MUX508, MUX509
www.ti.com
SBAS758C – JANUARY 2016 – REVISED SEPTEMBER 2016
10 Applications and Implementation
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
10.1 Application Information
The MUX50x family offers outstanding input/output leakage currents and ultralow charge injection. These devices
operate up to 36 V, and offer true rail-to-rail input and output. The on-capacitance of the MUX50x is very low.
These features makes the MUX50x a precision, robust, high-performance analog multiplexer for high-voltage,
industrial applications.
10.2 Typical Application
Figure 42 shows a 16-bit, differential, four-channel, multiplexed, data-acquisition system. This example is typical
in industrial applications that require low distortion and a high-voltage differential input. The circuit uses the
ADS8864, a 16-bit, 400-kSPS successive-approximation-resistor (SAR) analog-to-digital converter (ADC), along
with a precision, high-voltage, signal-conditioning front end, and a four-channel differential mux. This application
example details the process for optimizing a precision, high-voltage, front-end drive circuit using the MUX509,
OPA192 and OPA140 to achieve excellent dynamic performance and linearity with the ADS8864.
Analog Inputs
REF3140
Bridge Sensor
OPA192
Gain Network
Gain Network
RC Filter
OPA350
RC Filter
Reference Driver
+
Thermocouple
MUX509
+
OPA140
Current Sensing
LED
Photo
Detector
Optical Sensor
+
Gain Network
Gain Network
OPA192
High-Voltage Multiplexed Input
High-Voltage Level Translation
REF
Charge
Kickback
Filter
VINP
ADS8864
VINM
VCM
Copyright © 2016, Texas Instruments Incorporated
Figure 42. 16-Bit Precision Multiplexed Data-Acquisition System for High-Voltage Inputs With Lowest
Distortion
10.2.1 Design Requirements
The primary objective is to design a ±20 V, differential, four-channel, multiplexed, data-acquisition system with
lowest distortion using the 16-bit ADS8864 at a throughput of 400 kSPS for a 10-kHz, full-scale, pure, sine-wave
input. The design requirements for this block design are:
• System supply voltage: ±15 V
• ADC supply voltage: 3.3 V
• ADC sampling rate: 400 kSPS
• ADC reference voltage (REFP): 4.096 V
• System input signal: A high-voltage differential input signal with a peak amplitude of 20 V and frequency
(fIN) of 10 kHz are applied to each differential input of the mux.
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: MUX508 MUX509
27
MUX508, MUX509
SBAS758C – JANUARY 2016 – REVISED SEPTEMBER 2016
www.ti.com
Typical Application (continued)
10.2.2 Detailed Design Procedure
The purpose of this precision design is to design an optimal, high-voltage, multiplexed, data-acquisition system
for highest system linearity and fast settling. The overall system block diagram is illustrated in Figure 42. The
circuit is a multichannel, data-acquisition signal chain consisting of an input low-pass filter, mux, mux output
buffer, attenuating SAR ADC driver, and the reference driver. The architecture allows fast sampling of multiple
channels using a single ADC, providing a low-cost solution. This design systematically approaches each analog
circuit block to achieve a 16-bit settling for a full-scale input stage voltage and linearity for a 10-kHz sinusoidal
input signal at each input channel.
For step-by-step design procedure, circuit schematics, bill of materials, PCB files, simulation results, and test
results, see TI Precision Design TIPD151, 16-Bit, 400-kSPS, 4-Channel Multiplexed Data-Acquisition System
for High-Voltage Inputs with Lowest Distortion.
10.2.3 Application Curve
1.0
Integral Non-Linearity (LSB)
0.8
0.6
0.4
0.2
0.0
±0.2
±0.4
±0.6
±0.8
±1.0
±20
±15
±10
±5
0
5
10
ADC Differential Peak-to-Peak Input (V)
15
20
C030
Figure 43. ADC 16-Bit Linearity Error for the Multiplexed Data-Acquisition Block
28
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: MUX508 MUX509
MUX508, MUX509
www.ti.com
SBAS758C – JANUARY 2016 – REVISED SEPTEMBER 2016
11 Power-Supply Recommendations
The MUX50x operates across a wide supply range of ±5 V to ±18 V (10 V to 36 V in single-supply mode). The
MUX508 and MUX509 operate equally well with either dual supplies (±5 V to ±18 V), or a single supply (10 V to
36 V). They also perform well with unsymmetric supplies such as VDD = 12 V and VSS = –5 V. For reliable
operation, use a supply decoupling capacitor with a capacitance between 0.1 µF to 10 µF at both the VDD and
VSS pins to ground.
The on-resistance of the MUX50x varies with supply voltage, as shown in Figure 44.
250
VDD = 13.5 V VDD = 15 V
VSS = ±13.5 V VSS = ±15 V
On Resistance (Ÿ)
200
150
100
50
VDD = 18 V
VSS = ±18 V
VDD = 16.5 V
VSS = ±16.5 V
0
±20
±15
±10
±5
0
5
10
Source or Drain Voltage (V)
15
20
C001
Figure 44. On-Resistance Variation With Supply and Input Voltage
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: MUX508 MUX509
29
MUX508, MUX509
SBAS758C – JANUARY 2016 – REVISED SEPTEMBER 2016
www.ti.com
12 Layout
12.1 Layout Guidelines
Figure 45 shows an example of a PCB layout with the MUX508IPW, and Figure 46 shows an example of a PCB
layout with MUX509IPW. The guidelines provided in this section are also applicable to the SOIC MUX508ID and
MUX509ID package variants as well.
Some key considerations are:
1. Decouple the VDD and VSS pins with a 0.1-µF capacitor, placed as close to the pin as possible. Make sure
that the capacitor voltage rating is sufficient for the VDD and VSS supplies.
2. Keep the input lines as small as possible. For the MUX509 differential signals, make sure the A inputs and B
inputs are as symmetric as possible.
3. Use a solid ground plane to help distribute heat and reduce electromagnetic interference (EMI) noise pickup.
4. Do not run sensitive analog traces in parallel with digital traces. Avoid crossing digital and analog traces if
possible and only make perpendicular crossings when necessary.
C
AO
A1
EN
AO
Via to
ground plane
A2
12.2 Layout Example
A1
EN
A2
VSS
GND
S1
Via to
ground plane
MUX508IPW
C
VDD
S2
S5
S3
S6
S4
S7
D
S8
Copyright © 2016, Texas Instruments Incorporated
C
AO
A1
EN
GND
VSS
VDD
S 1A
MUX509 IPW
Via to
ground plane
A1
AO
Via to
ground plane
EN
Figure 45. MUX508IPW Layout Example
C
S 1B
S 2A
S 2B
S 3A
S 3B
S 4A
S 4B
DA
DB
Copyright © 2016, Texas Instruments Incorporated
Figure 46. MUX509IPW Layout Example
30
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: MUX508 MUX509
MUX508, MUX509
www.ti.com
SBAS758C – JANUARY 2016 – REVISED SEPTEMBER 2016
13 Device and Documentation Support
13.1 Documentation Support
13.1.1 Related Documentation
• ADS866x 12-Bit, 500-kSPS, 4- and 8-Channel, Single-Supply, SAR ADCs with Bipolar Input Ranges
(SBAS492)
• OPAx140 High-Precision, Low-Noise, Rail-to-Rail Output, 11-MHz JFET Op Amp (SBOS498)
• OPAx192 36-V, Precision, Rail-to-Rail Input/Output, Low Offset Voltage, Low Input Bias Current Op Amp with
e-trim™ (SBOS620)
13.2 Related Links
Table 3 lists quick access links. Categories include technical documents, support and community resources,
tools and software, and quick access to sample or buy.
Table 3. Related Links
PARTS
PRODUCT FOLDER
SAMPLE & BUY
TECHNICAL
DOCUMENTS
TOOLS &
SOFTWARE
SUPPORT &
COMMUNITY
MUX508
Click here
Click here
Click here
Click here
Click here
MUX509
Click here
Click here
Click here
Click here
Click here
13.3 Receiving Notification of Documentation Updates
To receive notification of documentation updates, navigate to the device product folder on ti.com. In the upper
right corner, click on Alert me to register and receive a weekly digest of any product information that has
changed. For change details, review the revision history included in any revised document.
13.4 Community Resources
The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective
contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of
Use.
TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration
among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help
solve problems with fellow engineers.
Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and
contact information for technical support.
13.5 Trademarks
E2E is a trademark of Texas Instruments.
All other trademarks are the property of their respective owners.
13.6 Electrostatic Discharge Caution
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
13.7 Glossary
SLYZ022 — TI Glossary.
This glossary lists and explains terms, acronyms, and definitions.
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: MUX508 MUX509
31
MUX508, MUX509
SBAS758C – JANUARY 2016 – REVISED SEPTEMBER 2016
www.ti.com
14 Mechanical, Packaging, and Orderable Information
The following pages include mechanical packaging and orderable information. This information is the most
current data available for the designated devices. This data is subject to change without notice and revision of
this document. For browser-based versions of this data sheet, refer to the left-hand navigation.
32
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: MUX508 MUX509
PACKAGE OPTION ADDENDUM
www.ti.com
10-Dec-2020
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
(3)
(4/5)
(6)
MUX508ID
ACTIVE
SOIC
D
16
40
RoHS & Green
SN
Level-2-260C-1 YEAR
-40 to 125
M36508D
MUX508IDR
ACTIVE
SOIC
D
16
2500
RoHS & Green
SN
Level-2-260C-1 YEAR
-40 to 125
M36508D
MUX508IPW
ACTIVE
TSSOP
PW
16
90
RoHS & Green
NIPDAU
Level-2-260C-1 YEAR
-40 to 125
MUX508B
MUX508IPWR
ACTIVE
TSSOP
PW
16
2000
RoHS & Green
NIPDAU
Level-2-260C-1 YEAR
-40 to 125
MUX508B
MUX509ID
ACTIVE
SOIC
D
16
40
RoHS & Green
SN
Level-2-260C-1 YEAR
-40 to 125
M36509D
MUX509IDR
ACTIVE
SOIC
D
16
2500
RoHS & Green
SN
Level-2-260C-1 YEAR
-40 to 125
M36509D
MUX509IPW
ACTIVE
TSSOP
PW
16
90
RoHS & Green
NIPDAU
Level-2-260C-1 YEAR
-40 to 125
MUX509C
MUX509IPWR
ACTIVE
TSSOP
PW
16
2000
RoHS & Green
NIPDAU
Level-2-260C-1 YEAR
-40 to 125
MUX509C
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of
工商网监
湘ICP备2023018690号
