LTC5228
P-1
DESCRIPTION
The LTC5228 is an advanced CMOS analog switch fabricated in Sub−micron silicon gate CMOS
technology. The part also features guaranteed Break Before Make (BBM) switching, assuring the
switches never short the driver. The switches can handle negative signal down to - 2V.
FEATURES
Low RON: 0.4 Ω @ VCC = 3 V Typically
Wide Supply Voltage Range: 1.65 V ~ 5.5 V
Full -2 V ~ VCC Signal Handling Capability
High Off - Channel Isolation
Low Standby Current
Low Distortion
Break-Before-Make (BBM) Switching
High Continuous Current Capability: ±300 mA Through Each Switch
Applications in
Cell Phone Audio Block
Speaker and Earphone Switching Ring-Tone Chip
Amplifier Switching
Modems
Available Packages: QFN1.8×1.4-10L, MSOP-10L
Order Information
Model
LTC5228
Package
Ordering Number Note1
Packing Option
QFN1.8×1.4-10L
LTC5228YFS10
Tape and Reel, 3000
MSOP-10L
LTC5228YV10
Tape and Reel, 4000
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Linearin and designs are registered trademarks of Linearin Technology Corporation.
© Copyright Linearin Technology Corporation. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
FN1620-25.1 — Data Sheet
0.4 Ω, Negative Signal Handing, Dual SPDT Analog Switch
LTC5228
P-2
PIN CONFIGURATION (Top View)
NC2 GND
IN2
8
COM2
9
NO2
10
7
6
1
2
VCC
NO1
5
NC1
4
IN1
3
COM1
XCC
1
10
No2
NO1
2
9
COM2
COM1
3
8
IN2
IN1
4
7
NC2
NC1
5
6
GND
MSOP-10L
QFN 1.8 X 1.4-10L
PIN DESCRIPTIONS
Pin
Symbol
Description
1
VCC
Power Supply
2
NO1
Independent Channels
3
COM1
Common Channels
4
IN1
Controls
5
NC1
Independent Channels
6
GND
Ground
7
NC2
Independent Channels
8
IN2
Controls
9
COM2
Common Channels
10
NO2
Independent Channels
TRUTH TABLE
IN1, IN2
NO1, NO2
NC1, NC2
0
OFF
ON
1
ON
OFF
Analog Symbol
NC1
NO1
NC2
NO2
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Linearin and designs are registered trademarks of Linearin Technology Corporation.
© Copyright Linearin Technology Corporation. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
COM1
IN1
COM2
IN2
FN1620-25.1 — Data Sheet
0.4 Ω, Negative Signal Handing, Dual SPDT Analog Switch
P-3
LTC5228
RECOMMENDED OPERATING CONDITIONS
Characteristic
Symbol
Min
Max
Unit
DC Supply Voltag
VCC
1.65
5.5
V
Digital Select Input Voltage
VIN
GND
5.0
V
Analog Input Voltage
VIS
-2.0
VCC
V
Operating Temperature Range
TA
-45
+85
°C
tR tF
0
20
ns/V
Input Rise or Fall Time , SELECT
RECOMMENDED OPERATING CONDITIONS
Characteristic
Symbol
Value
Unit
Supply Voltage
VCC
-0.5 to +6.0
V
Analog Input Voltage
VIS
-2.5 ~ VCC + 0.3
|VCC - VIS| < 6.5 V
V
Digital Select Input Voltage
VIN
-0.5 to + 6.0
V
Output Voltage
VOUT
-2.5 ~ VCC + 0.3
|VCC - VO| < 6.5 V
V
Continuous DC Current from COM to NC/NO
Ian1
±300
mA
Ian1-pk1
±500
mA
Idmp
±100
mA
Peak Current from COM to NC/NO, 10 duty cycle (Note 1)
Continuous DC Current into COM/NO/NC with respect to VCC or GND
Stresses beyond those listed under “Absolute Maximum Ratings" may cause permanent damage to the device.
These are stress ratings only, and functional operation of the device at these or any other conditions beyond
those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum
rating conditions for extended periods may affect device reliability.
Note 1. Defined as 10% ON, 90% OFF duty cycle.
Functional Description
This integrated circuit can be damaged by ESD if you don't pay attention to ESD protection. Linearin
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.
Linearin reserves the right to make any change in circuit design, specification or other related things if
necessary without notice at any time. Please contact Linearin's sales office to get the latest data sheets.
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Linearin and designs are registered trademarks of Linearin Technology Corporation.
© Copyright Linearin Technology Corporation. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
FN1620-25.1 — Data Sheet
0.4 Ω, Negative Signal Handing, Dual SPDT Analog Switch
LTC5228
P-4
Output Capacitor
Symbol
Parameter
Test Conditions
VCC ±10%
(V)
TA = 25℃
0.4VCC
Min
Typ
Unit
Max
VIH
High-Level Input Voltage,
Select Inputs
1.65 ~ 5.5
VIL
Low-Level Input Voltage,
Select Inputs
1.65 ~ 5.5
0.5
V
IIN
Maximum Input Leakage
Current, Select Inputs
VIN = VCC or GND
5
±0.3
μA
Ioff
Power Off Leakage
Current
VIN = 4.3 V
0
±0.5
μA
ICO
Maximum Quiescent
Supply Current (Note 2)
Select,
VIS = VCC or GND
3.6
1.0
μA
IN1 = 2.6 V, IN2 = 0 V
or IN2 = 2.6 V, IN1 = 0 V
ICCT
Increase in ICC per input
V
1.5
μA
4.5
μA
4.3
IN1 = 1.8 V, IN2 = 0 V
or IN2 = 1.8 V, IN1 = 0 V
COM ON Leakage Current (Note 3)
ICOM (ON)
Ron
VIN = VIL or VIH, VNO = 0.3 V OR 4.7 V
VNC Floating VNO = 0.3 V OR 4.7 V
VNO Floating VCOM = 0.3 V OR 4.7 V
On-Resistance
(Note 2) (Note 3)
5.0
-20
20
VIS = 0.7 V, 3.6 V, 4.3 V
IIN = 100 mA
4.3
0.3
VIS = 0.7 V, 2.3 V, 3.0 V
IIN = 100 mA
3.0
0.4
nA
Ω
Rflat
On-Resistance Flatness
(Note 2) (Note 3) (Note 5)
ICOM = 100 mA
VIS = GND to Vcc
5.0
△Ron
On-Resistance Match
Between Channels
(Note 2) (Note 3) (Note 4)
ICOM = 100 mA,
VIS = 1.5 V
5.0
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Linearin and designs are registered trademarks of Linearin Technology Corporation.
© Copyright Linearin Technology Corporation. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
0.8
0.3
0.25
Q
Q
FN1620-25.1 — Data Sheet
0.4 Ω, Negative Signal Handing, Dual SPDT Analog Switch
LTC5228
P-5
Electrical Characteristics
Symbol
Parameter
Test Conditions
tON
Turn-On Time (Figure 1)
VIS = 1.5 V
tOFF
Turn-Off Time (Figure 1)
VIS = 1.5 V
tBBM
Break-Before-MakeTime
(Note6)( Figure 2)
CL= 35 pF
RIS = 50 Ω
VIS = 1.5 V
BW
On-Channel, -3 dB Bandwidth Frequency
Response (Figure 4)
VCC ±10% (V)
TA = 25C
Min
Typ
Max
2.5 ~ 3.3
35
45
3.3 ~ 5.5
25
30
2.5 ~ 3.3
17
20
3.6 ~ 5.5
15
20
2.5 ~ 3.3
7
9
3.6 ~ 5.5
4
6
Unit
ns
ns
ns
55
MHz
-70
dB
25
pC
3.6
0.06
%
RIS = 50 Ω
Off-Channel Isolation (Figure 5)
OISO
Q
FIS = 100 kHz, VIN = GND to VCC, CL = 5 pF,
RL = 50 Ω, VIS = IVRMS
Charge Injection Select Input to Common I/O
(Figure 3)
VIN = 0 or VCC, RIS = 0 Ω, CL = 100 pF,
RL = 1 mQ, Q = CL x ∆VOUT
Total Harmonic Distortion THD +Noise
THD
FIS = 20 Hz to 20 kHz, RL = 600Ω,
CL = 50 pF, VIS = 2 VRMS
Channel-to-Channel Crosstalk (Figure 6)
XTALK
FIS = 100 KHZ, VIN = GND TO VCC,
RL = 50 Q, CL = 5 PF, VIS = 1 VRMS
3.6 ~ 5.0
-72
dB
CIN
Control Pin Input Capacitance
3.6
3.5
pF
CCN/CNO
NC/NO Port Capacitance
3.6
50
pF
CCOM
COM Port Capacitance
When Switch is Enabled
3.6
120
pF
Note:
2. Guaranteed by design.
3. Guaranteed by design. Resistance measurements do not include test circuit or package resistance.
4. ∆RON = RON (MAX) - RON (MIN) between NC1 and NC2 or between NO1 and NO2.
5. Flatness is defined as the difference between the maximum and minimum value of on-resistance as
measured over the specified analog signal ranges.
6. Guaranteed by design in -40°C.
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Linearin and designs are registered trademarks of Linearin Technology Corporation.
© Copyright Linearin Technology Corporation. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
FN1620-25.1 — Data Sheet
0.4 Ω, Negative Signal Handing, Dual SPDT Analog Switch
LTC5228
P-6
TEST CIRCUITS
CIRCUITS
DUT
VCC
0.1μF
Output
VOUT
Open
50Ω
35pF
Input
DUT
VCC
0.1μF
Output
VOUT
Open
50Ω
35pF
Input
Figure 1. tON/tOFF
DUT
VCC
Output
0.1μF
VOUT
50Ω
35pF
Swith Select Pin
Figure 2. tBBM
DUT
Open
Output
CL
VIN
Figure3: Charge Injection
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Linearin and designs are registered trademarks of Linearin Technology Corporation.
© Copyright Linearin Technology Corporation. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
FN1620-25.1 — Data Sheet
0.4 Ω, Negative Signal Handing, Dual SPDT Analog Switch
P-7
LTC5228
TEST CIRCUITS (Cont.)
Network Analyzer
50Ω
VIN
VS
VOUT
50Ω
Figure4: Bandwidth
Network Analyzer
50Ω
50Ω
VIN
VS
VOUT
50Ω
Off -lsolation = 20 Log (VOUT/ VIN)
Figure5: Channel Off Isolation
Network Analyzer
NC
50Ω
VIN
VS
50Ω
VOUT
50Ω
CROSSTALK = 20 Log (V OUT/ VIN )
Figure6: Non-Adjacent Channel-to-Channel Crosstalk
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Linearin and designs are registered trademarks of Linearin Technology Corporation.
© Copyright Linearin Technology Corporation. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
FN1620-25.1 — Data Sheet
0.4 Ω, Negative Signal Handing, Dual SPDT Analog Switch
LTC5228
P-8
PACKAGE OUTLINE
QFN1.8×1.4-10L
PIN 1 DOT
BY MARKING
b
D
L1
PIN 1 IDENTIFICATION
CHAMFER
L
E
e
TOP VIEW
BOTTOM VIEW
A
A1
A3
SIDE VIEW
Dimensions In Millimeters (mm)
Symbol
Min.
Nom.
Max.
A
0.500
0.550
0.600
A1
0.000
A3
0.050
0.15 REF
D
1.350
1.400
1.450
E
1.750
1.800
1.850
b
0.150
0.200
0.250
L
0.300
0.400
0.500
L1
0.400
0.500
0.600
e
0.40 BSC
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Linearin and designs are registered trademarks of Linearin Technology Corporation.
© Copyright Linearin Technology Corporation. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
FN1620-25.1 — Data Sheet
0.4 Ω, Negative Signal Handing, Dual SPDT Analog Switch
LTC5228
P-9
PACKAGE OUTLINE
MSOP-10L
θ
H
C2
B1
B
C3
C4
B2
A1
A2
A3
R
A
θ2
C1
θ3
R1
C
θ
Symbol
A
A1
A2
A3
B
B1
B2
C
C1
C2
Dimensions In Millimeters (mm)
Min.
2.90
0.18
Max.
3.10
0.25
0.50 TYP
0.40 TYP
2.90
4.70
0.45
0.75
-
3.10
5.10
0.75
0.95
1.100
Symbol
C3
C4
H
θ
θ1
θ2
θ3
R
R1
0.328 TYP
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Linearin and designs are registered trademarks of Linearin Technology Corporation.
© Copyright Linearin Technology Corporation. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
Dimensions In Millimeters (mm)
Min.
Max.
0.152
0.15
0.00
0.23
0.09
15°TYP4
12°TYP4
14°TYP
0°~6°
0.15TYP
0.15TYP
FN1620-25.1 — Data Sheet
0.4 Ω, Negative Signal Handing, Dual SPDT Analog Switch