General Description
The MAX4758/MAX4759 quad double-pole/doublethrow (DPDT) analog switches operate from a single
+1.8V to +5.5V supply. These switches feature low
0.5Ω on-resistance for audio switching and a low 25pF
capacitance for data switching.
The MAX4758 has eight 0.5Ω on-resistance switches to
switch audio signals. The MAX4759 has four 0.5Ω on-
resistance switches to route audio signals and four
25pF capacitance switches to route data signals. The
MAX4758/MAX4759 have four logic inputs to control the
switches in pairs.
The MAX4758/MAX4759 are available in a small 36-pin
(6mm x 6mm) thin QFN and 36-bump (3mm x 3mm)
chip-scale package (UCSP™).
Applications
Features
♦ Data and Audio Signal Routing
♦ Low On-Resistance (0.5Ω) Audio Switches
♦ 0.2Ω On-Resistance Flatness
♦ 0.1Ω Channel-to-Channel Matching
♦ Low-Capacitance (25pF) Data Switches (MAX4759)
♦ 0.2ns Skew (MAX4759)
♦ 0.03% THD
♦ +1.8V to +5.5V Supply Range
♦ Rail-to-Rail Signal Handling
♦ Tiny 36-Bump UCSP (3mm x 3mm)
♦ 36-Pin Thin QFN (6mm x 6mm)
MAX4758/MAX4759
Quad DPDT Audio/Data Switches in UCSP/QFN
________________________________________________________________ Maxim Integrated Products 1
Ordering Information
19-3043; Rev 2; 2/05
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.
PART
PIN-PACKAGE
MAX4758EBX-T
36 U C S P - 36
MAX4758ETX
36 Thi n QFN ( 6m m x 6m m )
MAX4759EBX-T
36 U C S P - 36
MAX4759ETX
36 Thi n QFN ( 6m m x 6m m )
UCSP is a trademark of Maxim Integrated Products, Inc.
Functional Diagrams
MAX4758
INA
NO1
NC1
NO2
NC2
AUDIO 1
COM1
COM2
AUDIO 2
INB
NO3
NC3
NO4
NC4
AUDIO 3
COM3
COM4
AUDIO 4
INC
NO5
NC5
NO6
NC6
AUDIO 5
COM5
COM6
AUDIO 6
IND
NO7
NC7
NO8
NC8
AUDIO 7
COM7
COM8
AUDIO 8
MAX4759
INA
NO1
NC1
NO2
NC2
AUDIO 1
COM1
COM2
AUDIO 2
INB
NO3
NC3
NO4
NC4
AUDIO 3
COM3
COM4
AUDIO 4
INC
NO5
NC5
NO6
NC6
DATA 1
COM5
COM6
DATA 1
IND
NO7
NC7
NO8
NC8
DATA 3
COM7
COM8
DATA 4
Pin Configurations/Truth Table appear at end of data sheet.
Speaker-Headset
Switching
Audio-Signal Routing
Cellular Phones
PDAs/Hand-Held
Devices
Notebook Computers
USB Signal Switching
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
MAX4758/MAX4759
Quad DPDT Audio/Data Switches in UCSP/QFN
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V+ = +2.7V to +5.25V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at V+ = 3V, TA= +25°C.) (Notes 2, 3)
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.
(All voltages referenced to GND.)
V+, IN_......................................................................-0.3V to +6V
COM_, NO_, NC_ (Note 1) ...........................-0.3V to (V+ + 0.3V)
Continuous Current
NO_, NC_, COM_ (MAX4758) ....................................±300mA
NO1–NO4, NC1–NC4, COM1–COM4 (MAX4759) .....±300mA
NO5–NO8, NC5–NC8 COM5–COM8 (MAX4759) ......±100mA
Peak Current NO_, NC_, COM_ (MAX4758)
NO1–NO4, NC1–NC4, COM1–COM4 (MAX4759)
(pulsed at 1ms, 10% duty cycle)................................±500mA
(pulsed at 1ms, 50% duty cycle)................................±400mA
Peak Current NO5–NO8, NC5–NC8, COM5–COM8 (MAX4759)
(pulsed at 1ms, 10% duty cycle)................................±200mA
(pulsed at 1ms, 50% duty cycle)............................... ±300mA
Continuous Power Dissipation (T
A
= +70°C)
36-Bump UCSP (derate 15.3mW/°C above +70°C).... 1221mW
36-Pin Thin QFN (derate 26.3mW/°C above +70°C)... 2105mW
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
Lead Temperature (soldering, 10s) ................................ +300°C
Bump Temperature (soldering)
Infrared (15s) ...............................................................+220°C
Vapor Phase (60s) .......................................................+215°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.
PARAMETER
SYMBOL
CONDITIONS T
A
MIN
TYP
MAX
UNITS
ANALOG SWITCH
Analog Signal Range
V
COM_
,
V
NO__,
V
NC___
0
V
+25°C
(N_ 1–N_4)
+25°C
On-Resistance (Note 4) R
ON
V+ = 2.7V,
I
COM_
= 10mA,
V
NC
_ or V
NO_
= 0 or V+
MAX4759
(N_5–N_8)
4
Ω
+25°C
MAX4758, MAX4759
(N_1–N_4)
+25°C
On-Resistance Match
Between Channels
(Notes 4, 5)
ΔR
ON
V+ = 2.7V,
I
COM_
= 10mA,
V
NO_
or
V
NC
_ =1.5V
MAX4759
(N_5–N_8)
Ω
+25°C
MAX4758, MAX4759
(N_1–N_4)
+25°C
On-Resistance Flatness
(Note 6)
)
V + = 2.7V ,
0 or V +
MAX4759
(N_5–N_8)
Ω
+25°C -5
NO_, NC_ Off-Leakage
Current
I
NO_(OFF),
)
V+ = 3.6V; V
COM_
= 3.3V, 0.3V;
V
NO_
or VNC_ = 0.3V, 3.3V
nA
+25°C -5
COM_ On-Leakage Current
)
V + = 3.6V ; V
C OM_
= 3.3V , 0.3V ;
V
N O_
or V
N C _
= 3.3V , 0.3V , or floating
nA
DYNAMIC
+25°C 45
Turn-On Time t
ON
V+ = 2.7V, V
NO_
or V
NC_
= 1.5V;
R
L
= 50Ω; CL = 35pF, Figure 2
ns
R
FLAT (ON
I
C OM _
V
I
NC_(OFF
I
COM_(ON
M AX 4758, M AX 4759
= 10m A,
_ or V
N C
N O_
=
T
to T
MIN
MAX
T
to T
MIN
MIN
to T
MAX
MAX
T
T
to T
MIN
MAX
T
to T
MIN
MAX
T
to T
MIN
MAX
T
to T
MIN
MAX
T
to T
MIN
MAX
T
to T
MIN
MAX
T
to T
MIN
MAX
V+
0.5 0.85
1.0
2.0 3.5
0.1 0.35
0.55
0.2 0.4
0.55
0.2 0.45
0.55
0.8 1.5
1.8
+5
-25 +25
+5
-25 +25
140
150
MAX4758/MAX4759
Quad DPDT Audio/Data Switches in UCSP/QFN
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V+ = +2.7V to +5.25V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at V+ = 3V, TA= +25°C.) (Notes 2, 3)
PARAMETER
CONDITIONS T
A
UNITS
+25°C 25 50
Turn-Off Time t
OFF
V+ = 2.7V, V
NO_
or V
NC_
= 1.5V;
R
L
= 50Ω; CL = 35pF, Figure 2
60
ns
+25°C 15
Break-Before-Make (Note 7) t
BBM
V+ = 2.7V, V
NO_
or V
NC_
= 1.5V;
R
L
= 50Ω, CL = 35pF, Figure 3
2
ns
Skew (Note 7) t
SKEW
RS = 39Ω, CL = 50pF, MAX4759
(COM5–COM8), Figure 4
+25°C
ns
MAX4758, MAX4759
(COM1–COM4)
40
Charge Injection Q
V
GEN
= 0,
R
GEN
= 0,
C
L
= 1.0nF,
Figure 5
MAX4759
(COM5–COM8)
+25°C
15
pC
Signal = 0dBm, CL = 5pF,
R
L
= 50Ω, MAX4758, MAX4759
(COM1–COM4)
+25°C 50
On-Channel -3dB Bandwidth
BW
Signal = 0dBm, C
L
= 5pF,
+25°C
MHz
Off-Isolation (Note 8) V
ISO
f = 100kHz, Figure 6
+25°C
dB
Crosstalk (Note 9) V
CT
f = 100kHz, Figure 6
+25°C
dB
MAX4758, MAX4759
+25°C
Total Harmonic Distortion THD
f = 20Hz to
MAX4759 (N_5–N_8),
R
L
= 600Ω
+25°C
%
MAX4758, MAX4759
(N_1–N_4)
+25°C
NO_, NC_ Off-Capacitance
C
N O_ ( OFF)
,
VNO_, VNC_ =
GND,
f = 1MHz,
Figure 7
MAX4759
(N_5–N_8)
+25°C 25
pF
MAX4758, MAX4759
(COM1–COM4)
+25°C
COM_ On-Capacitance C
(ON)
VNO_, VNC_ =
GND,
f = 1MHz,
Figure 7
MAX4759
(COM5–COM8)
+25°C 54
pF
DIGITAL I/O (IN_,)
V+ = 2.7V to 3.6V
Input Logic-High V
IH
V+ = 3.6V to 5.25V
V
V+ = 2.7V to 3.6V
Input Logic-Low V
IL
V+ = 3.6V to 5.25V
V
Input Leakage Current I
IN
VIN = 0 or V+
1µA
SYMBOL
RL = 50Ω, MAX4759 (COM5–COM8)
CL = 5pF, RL = 50Ω, V
CL = 5pF, RL = 50Ω, V
T
to T
MIN
T
to T
MIN
COM
COM
_ = 1V
_ = 1V
P-P
P-P
,
,
MIN TYP MAX
MAX
MAX
0.2 0.5
320
-95
-100
C
N C _ ( OFF)
20kHz, 1V
P-P
(N_1–N_4), RL = 32Ω
T
T
T
T
T
MIN
MIN
MIN
MIN
MIN
to T
to T
to T
to T
to T
MAX
MAX
MAX
MAX
MAX
0.03
0.03
102
284
1.4
2.0
0.5
0.6
MAX4758/MAX4759
Quad DPDT Audio/Data Switches in UCSP/QFN
4 _______________________________________________________________________________________
Typical Operating Characteristics
(V+ = 3V, TA= +25°C, unless otherwise noted.)
Note 2: The algebraic convention is used in this data sheet; the most negative value is shown in the minimum column.
Note 3: UCSP packages are 100% tested at +25°C and limits across the full temperature range are guaranteed by correlation and
design. Thin QFN parts are 100% tested at +85°C and limits across the full temperature range are guaranteed by correlation and design.
Note 4: R
ON
and ΔR
ON
matching specifications are guaranteed by design.
Note 5: ΔR
ON
= R
ON(MAX)
- R
ON(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 = 20log
10[VCOM_
/ (V
NO_
or V
NC_
)], V
COM_
= output, V
NO_
or V
NC_
= input to off switch.
Note 9: Between any two switches.
ELECTRICAL CHARACTERISTICS (continued)
(V+ = +2.7V to +5.25V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at V+ = 3V, TA= +25°C.) (Notes 2, 3)
PARAMETER
SYMBOL
CONDITIONS T
A
MIN
TYP
MAX
UNITS
POWER SUPPLY
Power-Supply Range V+
V
+25°C
Positive Supply Current I+ V+ = 4.3V, V
IN_
= 0V or V+
µA
ON-RESISTANCE vs. V
COM
MAX4758 toc01
V
COM
(V)
R
ON
(Ω)
4.54.03.53.02.52.01.51.00.5
0.5
1.0
1.5
2.0
2.5
0
05.0
MAX4758, MAX4759 (N_1–N_4)
V+ = 1.8V
V+ = 2V
V+ = 2.3V
V+ = 2.7V
V+ = 3V
V+ = 5V
ON-RESISTANCE
vs. V
COM
AND TEMPERATURE
MAX4758 toc02
V
COM
(V)
R
ON
(Ω)
2.52.01.51.00.5
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
0
03.0
MAX4758, MAX4759 (N_1–N_4)
V+ = 3V
ON-RESISTANCE
vs. V
COM
AND TEMPERATURE
MAX4758 toc03
V
COM
(V)
R
ON
(Ω)
4.54.03.0 3.51.0 1.5 2.0 2.50.5
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
0
05.0
V+ = 5V
MAX4758, MAX4759 (N_1–N_4)
TA+ = +85°C
TA+ = +25°C
TA+ = -40°C
T
to T
MIN
T
to T
MIN
1.8 5.5
MAX
MAX
0.01
1.0
MAX4758/MAX4759
Quad DPDT Audio/Data Switches in UCSP/QFN
_______________________________________________________________________________________ 5
ON-RESISTANCE vs. V
COM
MAX4758 toc04
V
COM
(V)
R
ON
(Ω)
4.54.03.0 3.51.0 1.5 2.0 2.50.5
2
3
4
5
6
7
8
9
10
1
05.0
MAX4759 (N_5–N_8)
V+ = 1.8V
V+ = 2V
V+ = 2.3V
V+ = 2.7V
V+ = 3V
V+ = 5V
ON-RESISTANCE
vs. V
COM
AND TEMPERATURE
MAX4758 toc05
V
COM
(V)
R
ON
(Ω)
2.52.01.51.00.5
1
2
3
4
5
0
03.0
MAX4759 (N_5–N_8)
V+ = 3V
TA = +85°C
TA = +25°C
TA = -40°C
ON-RESISTANCE
vs. V
COM
AND TEMPERATURE
MAX4758 toc06
V
COM
(V)
R
ON
(Ω)
4.54.03.53.02.52.01.51.00.5
1
2
3
4
5
0
05.0
MAX4759 (N_5–N_8)
V+ = 5V
TA = +85°C
TA = +25°C
TA = -40°C
NO/NC OFF-LEAKAGE CURRENT
vs. TEMPERATURE
MAX4758 toc07
TEMPERATURE (°C)
NO/NC OFF-LEAKAGE CURRENT (nA)
603510-15
0.01
0.1
1
10
0.001
-40 85
V+ = 3V / 5V
V+ = 5V
V+ = 3V
COM ON-LEAKAGE CURRENT
vs. TEMPERATURE
MAX4758 toc08
TEMPERATURE (°C)
COM ON-LEAKAGE CURRENT (nA)
603510-15
0.01
0.1
1
10
0.001
-40 85
V+ = 3V / 5V
CHARGE INJECTION vs. V
COM
MAX4758 toc09
V
COM
(V)
CHARGE INJECTION (pC)
431 2
20
40
60
80
100
120
140
160
0
05
MAX4758, MAX4759 (N_1–N_4)
C
L
= 1nF
V+ = 5V
V+ = 3V
CHARGE INJECTION vs. V
COM
MAX4758 toc10
V
COM
(V)
CHARGE INJECTION (pC)
4321
10
20
30
40
50
60
0
05
MAX4759 (N_5–N_8)
C
L
= 1nF
V+ = 5V
V+ = 3V
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX4758 toc11
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (nA)
5.55.02.0 2.5 3.0 4.03.5 4.5
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
0
1.5 6.0
Typical Operating Characteristics (continued)
(V+ = 3V, TA= +25°C, unless otherwise noted.)
MAX4758/MAX4759
Quad DPDT Audio/Data Switches in UCSP/QFN
6 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(V+ = 3V, TA= +25°C, unless otherwise noted.)
LOGIC THRESHOLD
vs. SUPPLY VOLTAGE
MAX4758 toc13
SUPPLY VOLTAGE (V)
LOGIC THRESHOLD (V)
5.04.54.03.53.02.52.0
0.4
0.8
1.2
1.6
2.0
0
1.5 5.5
V
IH
V
IL
TURN-ON/OFF TIMES
vs. SUPPLY VOLTAGE
MAX4758 toc14
SUPPLY VOLTAGE (V)
t
ON
/t
OFF
(ns)
5.04.52.0 2.5 3.0 3.5 4.0
10
20
30
40
50
60
70
80
0
1.5 5.5
t
ON
t
OFF
MAX4758, MAX4759 (N_1–N_4)
TURN-ON/OFF TIMES
vs. SUPPLY VOLTAGE
MAX4758 toc15
SUPPLY VOLTAGE (V)
t
ON
/t
OFF
(ns)
5.04.52.0 2.5 3.0 3.5 4.0
10
20
30
40
50
60
70
80
0
1.5 5.5
t
ON
t
OFF
MAX4759 (N_5–N_8)
TURN-ON/OFF TIMES
vs. TEMPERATURE
MAX4758 toc16
TEMPERATURE (°C)
t
ON
/t
OFF
(ns)
603510-15
10
20
30
40
50
60
0
-40 85
MAX4759 (N_5–N_8)
tON, V+ = 3V
tON, V+ = 5V
t
OFF
, V+ = 3V
t
OFF
, V+ = 5V
TURN-ON/OFF TIMES
vs. TEMPERATURE
MAX4758 toc17
TEMPERATURE (°C)
t
ON
/t
OFF
(ns)
603510-15
10
20
30
40
50
60
70
0
-40 85
MAX4758, MAX4759 (N_1–N_4)
tON, V+ = 3V
tON, V+ = 5V
t
OFF
, V+ = 3V
t
OFF
, V+ = 5V
SUPPLY CURRENT vs. TEMPERATURE
MAX4758 toc12
TEMPERATURE (°C)
SUPPLY CURRENT (nA)
603510-15
0.1
10
1000
0.001
-40 85
V+ = 5V
V+ = 3V
MAX4758/MAX4759
Quad DPDT Audio/Data Switches in UCSP/QFN
_______________________________________________________________________________________ 7
SKEW vs. SUPPLY VOLTAGE
MAX4758 toc18
SUPPLY VOLTAGE (V)
SKEW (ps)
5.04.54.03.53.02.52.0
100
200
300
400
500
600
0
1.5 5.5
MAX4759 (N_5–N_8)
INPUT RISE/FALL TIME = 15ns
C
L
= 50pF, FIGURE 3
SKEW vs. TEMPERATURE
MAX4758 toc19
TEMPERATURE (°C)
SKEW (ps)
603510-15
100
200
300
400
500
600
0
-40 85
MAX4759 (N_5–N_8)
INPUT RISE/FALL TIME = 15ns
C
L
= 50pF, FIGURE 3
V+ = 4.2V
FREQUENCY RESPONSE
MAX4758 toc20
FREQUENCY (MHz)
ON-LOSS (dB)
1000.01 1
-120
-100
-80
-60
-40
-20
0
20
-140
0.0001
MAX4758, MAX4759 (N_1–N_4)
V+ = 3V / 5V
ON-LOSS
CROSSTALK
OFF-ISOLATION
FREQUENCY RESPONSE
MAX4758 toc21
FREQUENCY (MHz)
ON-LOSS (dB)
1000.01 1
-120
-100
-80
-60
-40
-20
0
20
-140
0.0001
MAX4759 (N_5–N_8)
V+ = 3V / 5V
ON-LOSS
CROSSTALK
OFF-ISOLATION
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
MAX4758 toc22
FREQUENCY (Hz)
THD (%)
10k1k100
0.01
0.1
1
0.001
10 100k
MAX4758, MAX4759 (N_1–N_4)
V+ = 3V, R
L
= 32Ω
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
MAX4758 toc23
FREQUENCY (Hz)
THD (%)
10k1k100
0.1
10 100k
1
0.01
MAX4759 (N_5–N_8)
R
L
= 600Ω
Typical Operating Characteristics (continued)
(V+ = 3V, TA= +25°C, unless otherwise noted.)
MAX4758/MAX4759
Quad DPDT Audio/Data Switches in UCSP/QFN
8 _______________________________________________________________________________________
Pin Description
PIN
MAX4758 MAX4759
THIN
QFN
UCSP
THIN
QFN
UCSP
NAME FUNCTION
1 A1 1 A1 NC1 Analog Switch 1, Normally Closed Terminal 1
2 B2 2 B2 COM2 Analog Switch 2, Common Terminal 2
3 A2 3 A2 NC2 Analog Switch 2, Normally Closed Terminal 2
4 A3 4 A3 INA Logic Control Digital Input for Switches 1 and 2
5
5
V+ Positive Supply Voltage
6 A4 6 A4 INB Logic Control Digital Input for Switches 3 and 4
7 A5 7 A5 NC3 Analog Switch 3, Normally Closed Terminal 3
8 B5 8 B5 COM3 Analog Switch 3, Common Terminal 3
9 A6 9 A6 NC4 Analog Switch 4, Normally Closed Terminal 4
10 B6 10 B6 COM4 Analog Switch 4, Common Terminal 4
11, 14,
17, 29,
32, 35
—
11, 14,
17, 29,
32, 35
— N.C. No Connection. Not internally connected.
12 C5 12 C5 NO3 Analog Switch 3, Normally Open Terminal 3
13 C6 13 C6 NO4 Analog Switch 4, Normally Open Terminal 4
15 D6 15 D6 NO8 Analog Switch 8, Normally Open Terminal 8
16 D5 16 D5 NO7 Analog Switch 7, Normally Open Terminal 7
18 E6 18 E6 COM8 Analog Switch 8, Common Terminal 8
19 F6 19 F6 NC8 Analog Switch 8, Normally Closed Terminal 8
20 E5 20 E5 COM7 Analog Switch 7, Common Terminal 7
21 F5 21 F5 NC7 Analog Switch 7, Normally Closed Terminal 7
22 F4 22 F4 IND Logic Control Digital Input for Switches 7 and 8
23
23
GND Ground
24 F3 24 F3 INC Logic Control Digital Input for Switches 5 and 6
25 F2 25 F2 NC6 Analog Switch 6, Normally Closed Terminal 2
26 E2 26 E2 COM6 Analog Switch 6, Common Terminal 6
27 F1 27 F1 NC5 Analog Switch 5, Normally Closed Terminal 5
28 E1 28 E1 COM5 Analog Switch 5, Common Terminal 5
30 D2 30 D2 NO6 Analog Switch 6, Normally Open Terminal 6
31 D1 31 D1 NO5 Analog Switch 5, Normally Open Terminal 5
33 C1 33 C1 NO1 Analog Switch 1, Normally Open Terminal 1
34 C2 34 C2 NO2 Analog Switch 2, Normally Open Terminal 2
36 B1 36 B1 COM1 Analog Switch 1, Common Terminal 1
—— EN Output Enable, Active Low
EP — EP — EP Exposed Pad. Connect to GND
C3, D4
C4, D3
C3, D4
C4, D3
MAX4758/MAX4759
Quad DPDT Audio/Data Switches in UCSP/QFN
_______________________________________________________________________________________ 9
Detailed Description
The MAX4758/MAX4759 quad DPDT analog switches
operate from a single +1.8V to +5.5V supply. These
devices are fully specified for +3V applications.
The MAX4758/MAX4759 (switches 1–4) have a guaranteed 0.5Ω on-resistance, making them ideal for audio
switching applications. The MAX4759 also includes four
single-pole/double-throw (SPDT) switches (switches
5–8) that have a guaranteed 0.2Ω on-resistance, a low
25pF capacitance, 0.2ns change in skew making them
ideal for either data or audio switching applications.
These switches have four logic inputs to control two
switches in pairs.
Applications Information
Digital Control Inputs
The MAX4758/MAX4759 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 inputs rail-to-rail also minimizes power consumption. For a +3V supply voltage,
the logic thresholds are 0.5V (low) and 1.4V (high).
Analog Signal Levels
Analog signal inputs over the full voltage range (0V to V+)
are passed through the switch with minimal change in onresistance (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.
Power-Supply Sequencing
CMOS devices require proper power-supply sequencing. Always apply V+ before the analog signals, espe-
cially if the input signal is not current limited. If
sequencing is not possible, and the input signal is not
current limited to less than 20mA, add a small-signal
diode (Figure 1). Adding the diode reduces the analog
range to a diode drop (0.7V) below V+ and increases
the on-resistance slightly. The maximum supply voltage
must not exceed +6V at any time.
UCSP Applications Information
For the latest application details on UCSP construction,
dimensions, tape carrier information, PCB 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.maximic.com/ucsp for the Application Note, “UCSP—A Wafer-
Level Chip-Scale Package”.
POSITIVE SUPPLY
COM
NO
D1
GND
V+
MAX4758
MAX4759
Figure 1. Overvoltage Protection Using an External Blocking
Diode
MAX4758/MAX4759
Quad DPDT Audio/Data Switches in UCSP/QFN
10 ______________________________________________________________________________________
Timing Circuits/Timing Diagrams
tr < 5ns
tf < 5ns
50%
0V
LOGIC
INPUT
R
L
COM_
GND
IN_
C
L
INCLUDES FIXTURE AND STRAY CAPACITANCE.
V
OUT
= V
N_ (
R
L
)
RL + R
ON
V
N_
V+
t
OFF
0V
NO_
OR NC_
0.9 x V
0UT
0.9 x V
OUT
t
ON
V
OUT
SWITCH
OUTPUT
LOGIC
INPUT
IN DEPENDS ON SWITCH CONFIGURATION;
INPUT POLARITY DETERMINED BY SENSE OF SWITCH.
V+
C
L
V+
V
OUT
MAX4758
MAX4759
50%
Figure 2. Switching Time
50%
V+
0V
LOGIC
INPUT
V
OUT
0.9 x V
OUT
t
BBM
LOGIC
INPUT
R
L
GND
C
L
INCLUDES FIXTURE AND STRAY CAPACITANCE.
NO_
IN_
NC_
V
OUT
V+
V+
C
L
V
N_
COM_
MAX4758
MAX4759
Figure 3. Break-Before-Make Interval
MAX4758/MAX4759
Quad DPDT Audio/Data Switches in UCSP/QFN
______________________________________________________________________________________ 11
Timing Circuits/Timing Diagrams (continued)
t
skew_i
90%
50%
10%
90%
50%
10%
t
fi
INPUT A
INPUT A-
t
ri
t
skew_o
90%
50%
10%
90%
50%
10%
t
fo
OUTPUT B
OUTPUT B-
t
ro
B-
C
L
A-
R
s
A
B
C
L
TxD+
TxD-
R
s
Rs = 39Ω
C
L
= 50pF
DELAY DUE TO SWITCH FOR RISING INPUT AND RISING OUTPUT SIGNALS.
DELAY DUE TO SWITCH FOR FALLING INPUT AND FALLING OUTPUT SIGNALS.
CHANGE IN SKEW THROUGH THE SWITCH FOR OUTPUT SIGNALS.
CHANGE IN SKEW THROUGH THE SWITCH FOR INPUT SIGNALS.
|t
skew_i
|
|t
skew_o
|
|t
fo - tfi
|
|t
ro - tri
|
Figure 4. Input/Output Skew Timing Diagram
V
GEN
GND
COM_
C
L
V
OUT
V+
V
OUT
IN
OFF
ON
OFF
ΔV
OUT
Q = ΔV
OUT
✕ C
L
NC_
LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES
THAT HAVE THE OPPOSITE LOGIC SENSE.
OFF
ON
OFF
IN
V
IL
TO V
IH
V+
R
GEN
IN_
MAX4758
MAX4759
OR NO_
Figure 5. Charge Injection
MAX4758/MAX4759
Quad DPDT Audio/Data Switches in UCSP/QFN
12 ______________________________________________________________________________________
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.
+5V
V
OUT
V+
IN_
NC1
COM1
NO1*
V
IN
MAX4758
MAX4759
OFF-ISOLATION = 20log ✕
V
OUT
V
IN
ON-LOSS = 20log ✕
V
OUT
V
IN
CROSSTALK = 20log ✕
V
OUT
V
IN
NETWORK
ANALYZER
50Ω
50Ω 50Ω
50Ω
MEAS REF
10nF
0V OR V+
50Ω
GND
*FOR CROSSTALK THIS PIN IS NO2.
NC2 AND COM2 ARE OPEN.
Figure 6. On-Loss, Off-Isolation, and Crosstalk
Timing Circuits/Timing Diagrams (continued)
CAPACITANCE
METER
NC_ or
NO_
COM_
GND
IN
V
IL
OR V
IH
10nF
V+
f = 1MHz
V+
MAX4758
MAX4759
Figure 7. Channel On-/Off-Capacitance
Typical Operating Circuit
MAX4759
INA
IND
NO1
NC1
NO2
NC2
NC7
NO8
NC8
NO7
COM1
COM2
COM7
SWITCHING DATA SIGNALS
COM8
INTERNAL
SPEAKER
EXTERNAL
SPEAKER
MAX4758/MAX4759
Quad DPDT Audio/Data Switches in UCSP/QFN
______________________________________________________________________________________ 13
Pin Configurations/Truth Tables
MAX4758/MAX4759
NC2 INA
INB
NC1
1
A
B
C
D
234
COM1 COM2 COM3
NO1
NO2 V+ GND
NO5 N06 GND V+
UCSP
E
F
COM5
COM6
NC5 NC6 INC IND
NC3
NC4
56
COM4
NO3 NO4
NO7 NO8
COM7 COM8
NC7 NC8
INA
LOW
HIGH
INB
LOW
HIGH
NO1/NO2
OFF
ON
NC1/NC2
NO3/NO4 NC3/NC4
ON
OFF
INC
LOW
HIGH
NO5/NO6
OFF
ON
NC5/NC6
ON
OFF
OFF
ON
ON
OFF
IND
LOW
HIGH
NO7/NO8
OFF
ON
NC7/NC8
ON
OFF
(BUMP SIDE DOWN)
36
35
34
33
32
31
30
10
11
12
13
14
15
16
21
22
23
24
25
26
27
7
6
5
4
3
2
1
MAX4758
MAX4759
THIN QFN
TOP VIEW
COM2
NC1
NC2
INA
V+
INB
NC3
8
COM3
COM1
N.C.
NO2
NO1
N.C.
NO5
NO6
29
N.C.
NC5
COM6
NC6
INC
GND
IND
NC7
20
COM7
NO7
NO8
17
N.C.
28
COM5
18
COM8
N.C.
NO4
NO3
N.C.
COM4
9
NC4
19
NC8
NOTE: EXPOSED PADDLE CONNECTED TO GND OR FLOATING.
MAX4758/MAX4759
Chip Information
TRANSISTOR COUNT: 1432
PROCESS: CMOS
MAX4758/MAX4759
Quad DPDT Audio/Data Switches in UCSP/QFN
14 ______________________________________________________________________________________
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
.)
QFN THIN.EPS
MAX4758/MAX4759
Quad DPDT Audio/Data Switches in UCSP/QFN
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
© 2005 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc.
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
.)
Revision History
Pages changed at Rev 2: 1, 3, 4, 9, 15
36L,UCSP.EPS
PACKAGE OUTLINE, 6x6 UCSP
1
21-0082
K
1
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