19-2942; Rev 1; 11/06
KIT
ATION
EVALU
E
L
B
A
IL
AVA
0.5Ω, Quad SPDT Switches in UCSP/QFN
The MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A
low on-resistance, analog switches operate from a single
+1.8V to +5.5V supply. The MAX4754/MAX4754A and
MAX4755 are dual, double-pole, double-throw (DPDT)
switches. The MAX4756/MAX4756A are quad, single-pole
double-throw (SPDT) switches. They are configured to
route either audio or data signals.
The MAX4754/MAX4754A have four 0.5Ω SPDT switches for
audio-signal routing and two logic control inputs. The
MAX4755 has four 0.5Ω SPDT switches (with two
switches that have an additional 11Ω series resistor at
the NC terminals). This allows users to drive an 8Ω
speaker as a 32Ω load (ear speaker). The MAX4756/
MAX4756A have four 0.5Ω SPDT switches controlled by
one logic control input and an enable input (EN) to disable the switches.
The MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A
are available in a space-saving 16-pin TQFN and a tiny
16-bump, 2mm x 2mm chip-scale package (UCSP™).
Applications
Speaker-Headset Switching
Audio-Signal Routing
Cellular Phones
PDAs/Handheld Devices
Notebook Computers
Features
♦
♦
♦
♦
♦
♦
Data and Audio-Signal Routing
Low RON (0.5Ω typ) Audio Switches
0.1Ω (typ) Channel-to-Channel Matching
0.2Ω (typ) On-Resistance Flatness
0.035% (typ) THD
Improved Power-Supply Current for NonRail-to-Rail Control Logic Inputs
(MAX4754A/MAX4756A)
♦ +1.8V to +5.5V Supply Range
♦ Rail-to-Rail Signal Handling
♦ 16-Bump UCSP (2mm x 2mm)
Ordering Information
PART
MAX4754EBE+T
MAX4754ETE+T
MAX4754AEBE+T
MAX4754AETE+T
MAX4755EBE+T*
MAX4755ETE+T*
MAX4756EBE+T*
MAX4756ETE+T*
MAX4756AEBE+T*
MAX4756AETE+T*
PIN-PACKAGE
16 UCSP-16
16 TQFN-EP**
16 UCSP-16
16 TQFN-EP**
16 UCSP-16
16 TQFN-EP**
16 UCSP-16
16 TQFN-EP**
16 UCSP-16
16 TQFN-EP**
PKG CODE
B16-1
T1644-4
B16-1
T1644-4
B16-1
T1644-4
B16-1
T1644-4
B16-1
T1644-4
Note: These devices operate over the -40°C to +85°C operating
temperature range.
*Future product—contact factory for availability.
**EP = Exposed paddle.
+Denotes lead-free package.
UCSP is a trademark of Maxim Integrated Products, Inc.
Pin Configurations appear at end of data sheet.
Functional Diagrams
INA
NO1
INA
NO1
COM1
NC1
NO2
COM2
INA
NO1
11Ω
NC1
NO2
COM1
COM2
COM1
NC1
NO2
COM2
11Ω
NC2
NO3
NC2
NO3
COM3
NC3
NO4
COM4
NC4
INB
NC2
NO3
COM3
NC3
NO4
COM4
NC4
INB
MAX4754/
MAX4754A
COM3
NC3
NO4
COM4
NC4
EN
MAX4755
MAX4756/
MAX4756A
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A
General Description
MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A
0.5Ω, Quad SPDT Switches in UCSP/QFN
ABSOLUTE MAXIMUM RATINGS
(All voltages referenced to GND.)
V+, IN_, EN...............................................................-0.3V to +6V
COM_, NO_, NC_ (Note 1) ...........................-0.3V to (V+ + 0.3V)
Continuous Current
NC1, NC2, COM1, COM2 (MAX4755)........................±100mA
NO_, NC_, COM_ (remaining terminal connections) ....±300mA
Peak Current NC1, NC2, COM1, COM2 (MAX4755)
(Pulsed at 1ms, 10% duty cycle)................................±200mA
(Pulsed at 1ms, 50% duty cycle)................................±150mA
Peak Current NO_, NC_,
COM__ (remaining terminal connections)
(Pulsed at 1ms, 10% duty cycle)............................±500mA
(Pulsed at 1ms, 50% duty cycle)............................±400mA
Continuous Power Dissipation (TA = +70°C)
16-Bump UCSP (derate 8.2mW/°C above +70°C) ......660mW
16-Pin TQFN (derate 16.9mW/°C
above +70°C)............................................................1349mW
ESD per Method 3015.7...................................................±2kV
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Bump Temperature (soldering)
Infrared (15s) ...............................................................+220°C
Vapor Phase (60s) .......................................................+215°C
Lead Temperature (soldering, 10s) .................................+300°C
Note 1: Signals on NO_, NC_, COM_ exceeding V+ or GND are clamped by internal diodes. Limit forward-diode current to maximum
current rating.
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.
ELECTRICAL CHARACTERISTICS
(V+ = +2.7V to +5.25V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at +3V and TA = +25°C.) (Notes 2, 3)
PARAMETER
SYMBOL
CONDITIONS
TA
MIN
TMIN to
TMAX
0
TYP
MAX
UNITS
V+
V
ANALOG SWITCH
Analog Signal Range
On-Resistance
On-Resistance Match
Between Channels
On-Resistance Flatness
2
VCOM_,
VNO_,
VNC_
RON
ΔRON
RFLAT(ON)
V+ = 2.7V,
ICOM_= 10mA,
VNC_ or VNO_
= 0V or V+
(Note 4)
V+ = 2.7V,
ICOM_ = 10mA,
VNC_ or VNO_
= +1.5V
(Notes 4, 5)
MAX4755 (NO1, NO2,
N_3, N_4), MAX4754/
MAX4754A/MAX4756/
MAX4756A
+25°C
0.5
TMIN to
TMAX
1.0
Ω
+25°C
MAX4755 (NC1, NC2)
TMIN to
TMAX
MAX4755 (NO1, NO2,
N_3, N_4) MAX4754/
MAX4756
+25°C
MAX4755 (NC1, NC2)
V+ = +2.7V
ICOM_ = 10mA,
VNC_ or VNO_ =
0 or V+
(Notes 4, 5)
MAX4754A/MAX4756A
V+ = 3V,
ICOM_ = 10mA,
VNO_ or VNC_
= 0V, 0.6V, or V+
(Note 6)
MAX4755
(NO1, NO2, N_3, N_4,
NO1, NO2), MAX4754/
MAX4754A/MAX4756/
MAX4756A
11.5
8.0
12.5
0.1
TMIN to
TMAX
+25°C
0.2
0.4
Ω
0.55
0.1
0.35
Ω
TMIN to
TMAX
+25°C
0.35
0.55
TMIN to
TMAX
+25°C
0.85
0.55
0.2
TMIN to
TMAX
_______________________________________________________________________________________
0.4
0.55
Ω
0.5Ω, Quad SPDT Switches in UCSP/QFN
(V+ = +2.7V to +5.25V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at +3V and TA = +25°C.) (Notes 2, 3)
PARAMETER
SYMBOL
CONDITIONS
V+ = 3.6V; VCOM_ = 3.3V, 0.3V;
VNO_ or VNC_ = 0.3V, 3.3V
MAX4754/MAX4754A/MAX4755/MAX4756/
MAX4756A
NO_, NC_ Off-Leakage
Current
INO_(OFF),
INC_(OFF)
COM_ Off-Leakage
Current
V+ = 3.6V (MAX4756/MAX4756A);
ICOM_(OFF) VCOM_ = 3.3V, 0.3V;
VNO_ or VNC_ = 0.3V, 3.3V
COM_ On-Leakage
Current
ICOM_(ON)
V+ = 3.6V;
VCOM_ = 3.3V, 0.3V;
VNO_ or VNC_ = 3.3V, 0.3V or unconnected
TA
MIN
TYP
+25°C
-4
+4
TMIN to
TMAX
-10
+10
+25°C
-6
TMIN to
TMAX
-15
+15
+25°C
-3
+3
TMIN to
TMAX
-15
+15
0.01
MAX
UNITS
nA
+6
Ω
nA
DYNAMIC
+25°C
Turn-On Time NC_
tON, NC
V+ = 2.7V, VNC_ = 1.5V, RL = 50Ω, CL =
35pF (Figure 1) MAX4754A/MAX4756A
Turn-Off Time NC_
tOFF, NC
V+ = 2.7V, VNC_ = 1.5V, RL = 50Ω, CL =
35pF (Figure 1) MAX4754A/MAX4756A
Turn-On Time NO_
tON, NO
V+ = 2.7V, VNC_ = 1.5V, RL = 50Ω, CL =
35pF (Figure 1) MAX4754A/MAX4756A
Turn-Off Time NO_
tOFF, NO
V+ = 2.7V, VNC_ = 1.5V, RL = 50Ω, CL =
35pF (Figure 1) MAX4754A/MAX4756A
320
TMIN to
TMAX
900
+25°C
27
TMIN to
TMAX
70
TMIN to
TMAX
Turn-Off Time
300
TMIN to
TMAX
V+ = 2.7V, VNO_, or VNC_ = 1.5V;
RL = 50Ω; CL = 35pF, (Figure 1)
MAX4754/MAX4755/MAX4756
+25°C
tON
+25°C
tOFF
V+ = 2.7V, VNO_, or VNC_ = 1.5V;
RL = 50Ω; CL = 35pF (Figure 1)
MAX4754/MAX4755/MAX4756
tBBM
V+ = 2.7V, VNO_, or VNC_ = 1.5V;
RL = 50Ω, CL = 35pF (Figure 2) (Note 7)
TMIN to
TMAX
TMIN to
TMAX
Break-Before-Make
Charge Injection
Q
On-Channel -3dB
Bandwidth
TMIN to
TMAX
ns
50
60
+25°C
ns
140
150
25
ns
650
900
45
ns
150
200
+25°C
ns
60
70
+25°C
Turn-On Time
650
ns
15
ns
2
VGEN = 0V, RGEN = 0, CL = 1.0nF (Figure 3)
+25°C
300
pC
BW
Signal = 0dBm, CL = 50pF, Rs = 50Ω,
RL = 50Ω
+25°C
10
MHz
Off-Isolation
VISO
CL = 5pF, RL = 50Ω, VCOM_ = 1VP-P
f = 100kHz (Figure 4) (Note 8)
+25°C
-65
dB
Crosstalk
VCT
CL = 5pF, RL = 50Ω, VCOM_ = 1VP-P
f = 100kHz (Figure 4) (Note 9)
+25°C
-90
dB
_______________________________________________________________________________________
3
MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A
ELECTRICAL CHARACTERISTICS (continued)
MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A
0.5Ω, Quad SPDT Switches in UCSP/QFN
ELECTRICAL CHARACTERISTICS (continued)
(V+ = +2.7V to +5.25V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at +3V and TA = +25°C.) (Notes 2, 3)
PARAMETER
Total Harmonic
Distortion
SYMBOL
THD
CONDITIONS
f = 20Hz to 20kHz, 1VP-P,
RL = 32Ω, VDC = V+/2
NO_, NC_ OffCapacitance
CNO_(OFF), VNO, VNC_ = GND,
CNC_(OFF) f = 1MHz (Figure 5)
COM_ Off-Capacitance
CCOM_(OFF) VCOM_ = GND, f = 1MHz (Figure 5)
COM_ On-Capacitance
C(ON)
TA
MIN
TYP
MAX
UNITS
+25°C
0.035
%
+25°C
180
pF
+25°C
300
pF
VCOM_ = GND, f = 1MHz (Figure 5)
+25°C
400
pF
V+ = 2.7V to 3.6V,
MAX4754/MAX4755/MAX4756
TMIN to
TMAX
1.4
V+ = 2.7V to 5.25V,
MAX4754A/MAX4756A
TMIN to
TMAX
1.4
V+ = 3.6V to 5.25V,
MAX4754/MAX4755/MAX4756
TMIN to
TMAX
2.0
V+ = 2.7V to 3.6V,
MAX4754/MAX4755/MAX4756
TMIN to
TMAX
0.5
V+ = 2.7V to 5.25V,
MAX4754A/MAX4756A
TMIN to
TMAX
0.5
V+ = 3.6V to 5.25V,
MAX4754/MAX4755/MAX4756
TMIN to
TMAX
0.6
VIN = 0V or V+
TMIN to
TMAX
1
µA
5.5
V
DIGITAL I/O (IN_, EN)
Input Logic-High
Input Logic-Low
Input Leakage Current
VIH
VIL
IIN
V
V
POWER SUPPLY
Power-Supply Range
TMIN to
TMAX
V+
V+ = 5.5V, VIN_ = 0V or V+,
MAX4754/MAX4754A/MAX4755/MAX4756/
MAX4756A
Power-Supply Current
I+
+25°C
0.2
TMIN to
TMAX
+25°C
V+ = 5.5V, VIN_ = 0.5V or 1.4V,
MAX4754A/MAX4756A
1.8
2
µA
6.5
TMIN to
TMAX
12
µA
Note 2: The algebraic convention is used in this data sheet; the most negative value is shown in the minimum column.
Note 3: UCSP parts are 100% tested at +25°C and limits across the full temperature range are guaranteed by correlation and
design. TQFN parts are 100% tested at +85°C and limits across the full temperature range are guaranteed by correlation
and design.
Note 4: RON and ΔRON matching specifications are guaranteed by design and correlation.
Note 5: ΔRON = RON(MAX) - RON(MIN).
Note 6: Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the
specified analog signal ranges.
Note 7: Guaranteed by design, not production tested.
Note 8: Off-Isolation = 20log10 [VCOM / (VNO or VNC)], VCOM = output, VNO or VNC = input to off switch.
Note 9: Between any two switches.
4
_______________________________________________________________________________________
0.5Ω, Quad SPDT Switches in UCSP/QFN
ON-RESISTANCE vs. VCOM
AND TEMPERATURE
0.8
2.0
V+ = 2.3V
V+ = 2.7V
V+ = 3.0V
1.0
V+ = 5.5V
1
2
3
4
0.2
0.1
0
0
2
1
3
0
1
2
3
4
VCOM (V)
VCOM (V)
ON-RESISTANCE vs. VCOM
ON-RESISTANCE
vs. VCOM AND TEMPERATURE
ON-RESISTANCE
vs. VCOM AND TEMPERATURE
V+ = +1.8V
12.5
13.0
RON (Ω)
V+ = +2.3V
V+ = +2.5V
11.0
12.0
TA = +85°C
11.5
TA = +25°C
10.5
V+ = +5V
10.0
TA = +25°C
10.5
TA = -40°C
TA = -40°C
10.0
10.0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
TA = +85°C
11.5
11.0
11.0
V+ = +3.0V
0
0.5
1.0
1.5
2.0
2.5
0
3.0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
VCOM (V)
NO/NC OFF-LEAKAGE CURRENT
vs. TEMPERATURE
(MAX4754/MAX4755/MAX4756)
COM ON-LEAKAGE CURRENT
vs. TEMPERATURE
CHARGE INJECTION vs. VCOM
(MAX4754/MAX4755/MAX4756)
1
0.1
MAX4754A-56A toc08
10
V+ = 5V
COM ON-LEAKAGE CURRENT (nA)
MAX4754A-56A toc07
V+ = 5V
1
0.1
-15
10
35
TEMPERATURE (°C)
60
85
CL = 1nF
V+ = 5V
80
70
60
50
40
30
20
V+ = 3V
10
0
0.01
0.01
120
110
100
90
MAX4754A-56A toc09
VCOM (V)
CHARGE INJECTION (pC)
VCOM (V)
10
5
MAX4755 NC1, NC2
CHANNELS
V+ = +5V
12.5
12.0
V+ = +2V
11.5
MAX4755 NC1, NC2
CHANNELS
V+ = +3V
RON (Ω)
12.0
13.0
MAX4754A-56A toc04
12.5
-40
TA = -40°C
VCOM (V)
MAX4755 NC1, NC2 CHANNELS
0
TA = +25°C
0.3
TA = -40°C
0.1
5
13.0
10.5
0.5
0.2
MAX4754A-56A toc05
0
TA = +85°C
0.6
0.4
0
0
RON (Ω)
0.5
0.3
0.5
NO/NC OFF-LEAKAGE (nA)
TA = +25°C
0.7
0.4
V+ = 2.7V
1.5
0.6
0.8
MAX4754A-56A toc06
RON (_)
RON (Ω)
3.0
2.5
TA = +85°C
0.7
V+ = +5.0V
0.9
RON (_)
V+ = 1.8V
V+ = 3.0V
0.9
1.0
MAX4754A-56A toc02
4.0
3.5
1.0
MAX4754A-56A toc01
4.5
ON-RESISTANCE vs. VCOM
AND TEMPERATURE
MAX4754A-56A toc03
ON-RESISTANCE vs. VCOM
(MAX4754A/MAX4756A)
-40
-15
10
35
TEMPERATURE (°C)
60
85
0
1
2
3
4
5
VCOM (V)
_______________________________________________________________________________________
5
MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A
Typical Operating Characteristics
(V+ = 3V, TA = +25°C, unless otherwise noted.)
Typical Operating Characteristics (continued)
(V+ = 3V, TA = +25°C, unless otherwise noted.)
V+ = 5V
100
50
1.2
1.0
0.8
0.6
10
0.1
V+ = 3.0V
0.01
0.2
V+ = 3V
0.001
0
0
V+ = 5V
1
0.4
0
1
2
3
5
4
1
2
3
4
-40
6
5
-15
10
35
60
85
VCOM (V)
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
SUPPLY CURRENT vs. TEMPERATURE
(MAX4754A/MAX4756A)
LOGIC THRESHOLD vs. SUPPLY VOLTAGE
(MAX4754/MAX4755/MAX4756)
LOGIC THRESHOLD vs. SUPPLY VOLTAGE
(MAX4754A/MAX4756A)
1
V+ = 3.0V
0.1
0.01
VIL
1.6
1.2
0.8
1.2
0.4
0.001
-15
-10
35
85
60
1.0
VIH
0.8
VII
0.6
0.4
0.2
0
-40
MAX4754A-56A toc15
VIH
2.0
1.4
LOGIC THRESHOLD (V)
V+ = 5.0V
MAX4754A-56A toc14
10
2.4
LOGIC THRESHOLD (V)
MAX4754A-56A toc13
100
0.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
1.5
2.5
3.5
4.5
5.5
TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
TURN-ON/OFF TIMES vs. SUPPLY VOLTAGE
(MAX4754/MAX4755/MAX4756)
TURN-ON/OFF TIMES vs. SUPPLY VOLTAGE
(MAX4754A)
TURN-ON/OFF TIMES vs. TEMPERATURE
(MAX4754/MAX4755/MAX4756)
60
700
600
tON/tOFF (ns)
50
40
tON
30
tOFF
20
500
tON, NC
tOFF, NO
400
300
200
10
50
tON, NO
tOFF, NC
40
tON, V+ = 3V
20
10
0
1.5
2.0
2.5
3.0
3.5
4.0
SUPPLY VOLTAGE (V)
4.5
5.0
5.5
tON, V+ = 5V
30
tOFF, V+ = 3V
tOFF, V+ = 5V
100
0
MAX4754A-56A toc18
800
MAx4754A-56A toc16
70
tON/tOFF (ns)
SUPPLY CURRENT (nA)
1.4
MAX4754-56 toc12
1.6
100
SUPPLY CURRENT (nA)
150
1.8
MAX4754A-56A toc17
CHARGE INJECTION (pC)
200
2.0
MAX4754A-56A toc11
CI = 1nF
SUPPLY CURRENT (nA)
MAX4754A-56A toc10
250
6
SUPPLY CURRENT vs. TEMPERATURE
(MAX4754/MAX4755/MAX4756)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
CHARGE INJECTION vs. VCOM
tON/tOFF (ns)
MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A
0.5Ω, Quad SPDT Switches in UCSP/QFN
0
1.5
2.5
3.5
4.5
SUPPLY VOLTAGE (V)
5.5
-40
-15
10
35
TEMPERATURE (°C)
_______________________________________________________________________________________
60
85
0.5Ω, Quad SPDT Switches in UCSP/QFN
SUPPLY CURRENT
vs. LOGIC CONTROL INPUT
250
tON, NO
200
150
tOFF, NC
100
50
3000
2500
2000
1500
-15
10
35
60
SUPPLY VOLTAGE (V)
-20
-40
-60
500
-120
0
1
2
3
IN_ (V)
4
5
6
OFF-ISOLATION
-80
-100
85
ON-LOSS
-140
0.0001 0.001
CROSS-TALK
0.01
0.1
1
10
100
FREQUENCY (MHz)
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
1.0
MAX4754A-56A toc22
-40
0
1000
0
0
RL = 32Ω
THD + N (%)
tON/tOFF (ns)
300
V+ 5.5V
3500
ON-LOSS (dB)
tOFF, NO
350
20
MAX4754A-56A toc20
tON, NC
400
FREQUENCY REPSONSE
4000
CROWBAR CURRENT (nA)
MAX4754A-56A toc19
450
MAX4754A-56A toc21
TURN-ON/OFF TIMES vs. TEMPERATURE
(MAX4754A)
0.1
0.01
0.001
0.01
0.1
1
10
100
FREQUENCY (kHz)
_______________________________________________________________________________________
7
MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A
Typical Operating Characteristics (continued)
(V+ = 3V, TA = +25°C, unless otherwise noted.)
MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A
0.5Ω, Quad SPDT Switches in UCSP/QFN
Pin Description
PIN
MAX4754/MAX4754A
8
MAX4755
MAX4756/MAX4756A
NAME
FUNCTION
UCSP
QFN
UCSP
QFN
UCSP
QFN
C1
1
C1
1
C1
1
NO1
Analog Switch 1. Normally open terminal 1.
C2
2
C2
2
C2
2
INA
Logic Control Digital Input for Switches 1 and 2.
Digital control input for switches 1–4 for MAX4756.
B1
3
B1
3
B1
3
COM1
A1
4
A1
4
A1
4
NC1
A2
5
A2
5
A2
5
NO4
B2
6
B2
6
B2
6
V+
A3
7
A3
7
A3
7
COM4
A4
8
A4
8
A4
8
NC4
B4
9
B4
9
B4
9
NO2
Analog Switch 2. Normally open terminal 2.
B3
10
B3
10
—
—
INB
Logic Control Digital Input for Switches 3 and 4
Analog Switch 1. Common terminal.
Analog Switch 1. Normally closed terminal 1.
Analog Switch 4. Normally open terminal 4.
Positive Supply Voltage
Analog Switch 4. Common terminal.
Analog Switch 4. Normally closed terminal 4.
—
—
—
—
B3
10
EN
C4
11
C4
11
C4
11
COM2
D4
12
D4
12
D4
12
NC2
Analog Switch 2. Normally closed terminal 2.
D3
13
D3
13
D3
13
NO3
Analog Switch 3. Normally open terminal 3.
C3
14
C3
14
C3
14
GND
D2
15
D2
15
D2
15
COM3
D1
16
D1
16
D1
16
NC3
—
EP
—
EP
—
EP
EP
Output Enable. Active low.
Analog Switch 2. Common terminal 2.
Ground
Analog Switch 3. Common terminal 3.
Analog Switch 4. Normally closed terminal 3.
Exposed Paddle. Connect EP to GND.
_______________________________________________________________________________________
0.5Ω, Quad SPDT Switches in UCSP/QFN
INTERNAL
SPEAKER (8Ω)
INA
NO1
EAR SPEAKER (32Ω)
LOUD SPEAKER (8Ω)
INA
NO1
COM1
INTERNAL
SPEAKER (8Ω)
INA
NO1
COM1
COM1
11Ω
NC1
NO2
NC1
NO2
COM2
NC2
NO3
NC1
NO2
11Ω
COM2
NC2
NO3
NC2
NO3
COM3
NC3
NO4
COM3
NC3
NO4
MAX4754/
MAX4754A
COM3
NC3
NO4
COM4
HEADPHONE
(32Ω)
NC4
INB
COM2
COM4
CAR-KIT SPEAKER (8Ω)
NC4
INB
MAX4755
Detailed Description
The MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A
low on-resistance analog switches operate from a single
+1.8V to +5.5V supply. The devices are fully specified
for nominal 3V applications.
The MAX4754/MAX4754A DPDT switch have two logic
control inputs with each input controlling two SPDT
switches. Each switch has a 0.5Ω on-resistance in the
NO and NC terminals making it ideal for switching
audio signals.
The MAX4755 DPDT switch also has four 0.5Ω SPDT
switches with the switch pairs 1 and 2 adding an 11.5Ω
series resistor to the NC terminal. This feature allows
the user to drive an 8Ω speaker as a 32Ω load, allowing
it to be used as an ear speaker. Two logic control
inputs are used to control the four switches.
The MAX4756/MAX4756A has four 0.5Ω SPDT switches
controlled by one logic control input (INA) and EN input
to disable the switches.
Applications Information
Digital Control Inputs
The MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A
logic inputs accept up to +5.5V regardless of the supply voltage. For example, with a +3.3V supply IN_ can
be driven low to GND and high to +5.5V, which allows
mixed logic levels in a system. Driving the control logic
COM4
HEADPHONE
(32Ω)
NC4
EN
MAX4756/
MAX4756A
inputs rail-to-rail also minimizes power consumption.
For a +3V supply voltage, the logic thresholds are 0.5V
(low) and 1.4V (high).
For the MAX4756/MAX4756A, drive EN low to enable the
COM_. When EN is high, COM _ is high impedance.
Analog Signal Levels
Analog signal inputs over the full voltage range (0V to
V+) are passed through the switch with minimal change
in on-resistance (see the Typical Operating Characteristics). The switches are bidirectional so NO_, NC_,
and COM_ can be either inputs or outputs.
Power-Supply Bypassing
Power-supply bypassing improves noise margin and prevents switching noise from propagating from the V+ supply to other components. A 0.1µF capacitor connected
from V+ to GND is adequate for most applications.
UCSP Applications Information
For the latest application details on UCSP construction,
dimensions, tape carrier information, printed circuit
board techniques, bump-pad layout, and recommended reflow temperature profile, as well as the latest information on reliability testing results, go to the Maxim
website at www.maxim-ic.com/ucsp for the Application
Note: UCSP—A Wafer-Level Chip-Scale Package.
_______________________________________________________________________________________
9
MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A
Typical Operating Circuit
MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A
0.5Ω, Quad SPDT Switches in UCSP/QFN
Timing Circuits/Timing Diagrams
MAX4754/MAX4754A
MAX4755/MAX4756/
MAX4756A
VN_
V+
LOGIC
INPUT
V+
COM_
NO_
OR NC_
V+
0V
VOUT
RL
t OFF
CL
IN_
VOUT
GND
LOGIC
INPUT
SWITCH
OUTPUT
(
0.9 x V0UT
0.9 x VOUT
0V
t ON
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
RL
RL + RON
VOUT = VN_
50%
50%
t r < 5ns
t f < 5ns
IN DEPENDS ON SWITCH CONFIGURATION;
INPUT POLARITY DETERMINED BY SENSE OF SWITCH.
)
Figure 1. Switching Time
V+
MAX4754/MAX4754A
MAX4755/MAX4756/
MAX4756A
LOGIC
INPUT
V+
VOUT
COM_
NO_
RL
IN_
LOGIC
INPUT
50%
0V
NC_
VN_
V+
CL
GND
0.9 x VOUT
VOUT
tBBM
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
Figure 2. Break-Before-Make Interval
V+
MAX4754/MAX4754A
MAX4755/MAX4756/
MAX4756A
RGEN
V GEN
ΔVOUT
V+
VOUT
COM_
NC_
OR NO_
VOUT
IN
OFF
CL
GND
ON
OFF
IN_
VIL TO VIH
IN
OFF
ON
OFF
Q = (ΔV OUT )(C L )
LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES
THAT HAVE THE OPPOSITE LOGIC SENSE.
Figure 3. Charge Injection
10
______________________________________________________________________________________
0.5Ω, Quad SPDT Switches in UCSP/QFN
+5V
10nF
OFF-ISOLATION = 20log
NETWORK
ANALYZER
0V OR V+
NC1
50Ω
V+
IN_
50Ω
VIN
COM1
MAX4754/MAX4754A
MAX4755/MAX4756/
MAX4756A
NO1*
VOUT
GND
MEAS
50Ω
MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT IC TERMINALS.
OFF-ISOLATION IS MEASURED BETWEEN COM_ AND OFF NO_ OR NC_ TERMINAL ON EACH SWITCH.
ON-LOSS IS MEASURED BETWEEN COM_ AND ON NO_ OR NC_ TERMINAL ON EACH SWITCH.
CROSSTALK IS MEASURED FROM ONE CHANNEL TO THE OTHER CHANNEL.
SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED.
VOUT
VIN
V
ON-LOSS = 20log OUT
VIN
50Ω
REF
V
CROSSTALK = 20log OUT
VIN
50Ω
*FOR CROSSTALK, THIS PIN IS NO2.
NC2 AND COM2 ARE OPEN.
Figure 4. On-Loss, Off-Isolation, and Crosstalk
10nF
V+
V+
MAX4754/MAX4754A/
MAX4755/MAX4756/
MAX4756A
COM_
IN
CAPACITANCE
METER
f = 1MHz
VIL OR VIH
NC_ or
NO_
GND
Figure 5. Channel On-/Off-Capacitance
______________________________________________________________________________________
11
MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A
Timing Circuits/Timing Diagrams (continued)
Pin Configurations/Truth Tables
TOP VIEW
MAX4754
MAX4754A
MAX4755
MAX4756
MAX4756A
3
4
A
NC1
NO4
COM4
NC4
B
COM1
V+
INB
(EN)
NO2
C
NO1
INA
GND
COM2
D
NC3
COM3
NO3
NC2
NO2
2
INB (EN)
1
COM2
(BUMP SIDE DOWN)
NC2
MAX4754/MAX4754A/MAX4755/
MAX4756/MAX4756A
12
11
10
9
+
NO3
13
8
NC4
GND
14
7
COM4
COM3
15
6
V+
NC3
16
5
NO4
—
—
NC1
MAX4756/MAX4756A
NO1/NO2 NC1/NC2 NO3/NO4 NC3/NC4
OFF
ON
—
—
ON
OFF
—
—
—
—
4
*EP: EXPOSED PADDLE CONNECTED TO GND.
MAX4754/MAX4754A/MAX4755
INB
LOW
HIGH
3
TQFN
UCSP
INA
LOW
HIGH
2
COM1
( ) FOR MAX4756/MAX4756A.
1
INA
+
EP*
NO1
MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A
0.5Ω, Quad SPDT Switches in UCSP/QFN
OFF
ON
EN
LOW
LOW
HIGH
HIGH
INA
LOW
HIGH
X
X
NO_
OFF
ON
OFF
OFF
NC_
ON
OFF
OFF
OFF
ON
OFF
Chip Information
PROCESS: CMOS
12
______________________________________________________________________________________
0.5Ω, Quad SPDT Switches in UCSP/QFN
24L QFN THIN.EPS
PACKAGE OUTLINE,
12, 16, 20, 24, 28L THIN QFN, 4x4x0.8mm
21-0139
E
1
2
______________________________________________________________________________________
13
MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A
0.5Ω, Quad SPDT Switches in UCSP/QFN
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
PACKAGE OUTLINE,
12, 16, 20, 24, 28L THIN QFN, 4x4x0.8mm
21-0139
14
______________________________________________________________________________________
E
2
2
0.5Ω, Quad SPDT Switches in UCSP/QFN
16L,UCSP.EPS
PACKAGE OUTLINE, 4x4 UCSP
21-0101
H
1
1
Revision History
Pages changed at Rev 1: 1–5, 7, 8, 13, 14, 15
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 15
© 2006 Maxim Integrated Products
is a registered trademark of Maxim Integrated Products, Inc.
MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
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