MAXIM MAX4758ETX

19-3043; Rev 0; 10/03
Quad DPDT Audio/Data Switches in UCSP/QFN
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 onresistance 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
Speaker-Headset
Switching
Audio-Signal Routing
Cellular Phones
PDAs/Hand-Held
Devices
Notebook Computers
USB Signal Switching
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)
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX4758EBX-T
-40°C to +85°C 36 UCSP-36
MAX4758ETX
-40°C to +85°C 36 Thin QFN (6mm x 6mm)
MAX4759EBX-T* -40°C to +85°C 36 UCSP-36
MAX4759ETX*
-40°C to +85°C 36 Thin QFN (6mm x 6mm)
*Future product—contact factory for availability.
Functional Diagrams
INA
NO1
INA
NO1
AUDIO 1
AUDIO 1
COM1
NC1
NO2
COM1
NC1
NO2
AUDIO 2
AUDIO 2
COM2
NC2
INB
NO3
COM2
NC2
INB
NO3
AUDIO 3
AUDIO 3
COM3
NC3
NO4
COM3
NC3
NO4
AUDIO 4
AUDIO 4
COM4
NC4
INC
NO5
COM4
NC4
INC
NO5
AUDIO 5
DATA 1
COM5
NC5
NO6
COM5
NC5
NO6
AUDIO 6
DATA 1
COM6
NC6
IND
NO7
COM6
NC6
IND
NO7
AUDIO 7
DATA 3
COM7
NC7
NO8
COM7
NC7
NO8
AUDIO 8
DATA 4
COM8
NC8
COM8
NC8
MAX4758
MAX4759
UCSP is a trademark of Maxim Integrated Products, Inc.
Pin Configurations/Truth Table appear at end of data sheet.
________________________________________________________________ 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
MAX4758/MAX4759
General Description
MAX4758/MAX4759
Quad DPDT Audio/Data Switches in UCSP/QFN
ABSOLUTE MAXIMUM RATINGS
(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 (TA = +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.
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 V+ = 3V, 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 (Note 4)
On-Resistance Match
Between Channels
(Notes 4, 5)
On-Resistance Flatness
(Note 6)
VCOM_,
VNO__,
VNC___
RON
V+ = 2.7V,
ICOM_ = 10mA,
VNC_ or VNO_
= 0 or V+
MAX4758, MAX4759
(N_ 1–N_4)
MAX4759
(N_5–N_8)
+25°C
3.5
0.1
0.35
TMIN to TMAX
V+ = 2.7V,
ICOM_ = 10mA,
RFLAT (ON)
VNC_ or VNO_ =
0 or V+
MAX4758, MAX4759
(N_1–N_4)
TMIN to TMAX
Ω
4
+25°C
MAX4759
(N_5–N_8)
MAX4759
(N_5–N_8)
2.0
TMIN to TMAX
MAX4758, MAX4759
(N_1–N_4)
0.85
1.0
+25°C
V+ = 2.7V,
ICOM_ = 10mA,
VNO_ or
VNC_ =1.5V
∆RON
0.5
TMIN to TMAX
TMIN to TMAX
0.55
+25°C
0.2
0.4
Ω
0.55
+25°C
0.2
0.45
0.55
+25°C
0.8
TMIN to TMAX
1.5
Ω
1.8
+25°C
-5
+5
-25
+25
NO_, NC_ Off-Leakage
Current
INO_(OFF),
INC_(OFF)
V+ = 3.6V; VCOM_ = 3.3V, 0.3V;
VNO_ or VNC_ = 0.3V, 3.3V
TMIN to TMAX
COM_ On-Leakage Current
ICOM_(ON)
V+ = 3.6V; VCOM_ = 3.3V, 0.3V;
VNO_ or VNC_ = 3.3V, 0.3V, or floating
+25°C
-5
+5
TMIN to TMAX
-25
+25
nA
nA
DYNAMIC
Turn-On Time
2
tON
V+ = 2.7V, VNO_ or VNC_ = 1.5V;
RL = 50Ω; CL = 35pF, Figure 2
+25°C
45
TMIN to TMAX
_______________________________________________________________________________________
140
150
ns
Quad DPDT Audio/Data Switches in UCSP/QFN
(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
Turn-Off Time
tOFF
V+ = 2.7V, VNO_ or VNC_ = 1.5V;
RL = 50Ω; CL = 35pF, Figure 2
Break-Before-Make (Note 7)
tBBM
V+ = 2.7V, VNO_ or VNC_ = 1.5V;
RL = 50Ω, CL = 35pF, Figure 3
Skew (Note 7)
tSKEW
RS = 39Ω, CL = 50pF, MAX4759
(COM5–COM8), Figure 4
Charge Injection
Q
On-Channel -3dB Bandwidth
BW
VGEN = 0,
RGEN = 0,
CL = 1.0nF,
Figure 5
TA
MIN
+25°C
TYP
25
TMIN to TMAX
50
60
+25°C
TMIN to TMAX
MAX
15
0.2
MAX4758, MAX4759
(COM1–COM4)
ns
ns
2
+25°C
UNITS
0.5
ns
40
+25°C
pC
MAX4759
(COM5–COM8)
15
Signal = 0dBm, CL = 5pF,
RL = 50Ω, MAX4758, MAX4759
(COM1–COM4)
+25°C
Signal = 0dBm, CL = 5pF,
RL = 50Ω, MAX4759 (COM5–COM8)
+25°C
320
50
MHz
Off-Isolation (Note 8)
VISO
CL = 5pF, RL = 50Ω, VCOM_ = 1VP-P,
f = 100kHz, Figure 6
+25°C
-95
dB
Crosstalk (Note 9)
VCT
CL = 5pF, RL = 50Ω, VCOM_ = 1VP-P,
f = 100kHz, Figure 6
+25°C
-100
dB
MAX4758, MAX4759
(N_1–N_4), RL = 32Ω
+25°C
0.03
THD
f = 20Hz to
20kHz, 1VP-P
MAX4759 (N_5–N_8),
RL = 600Ω
+25°C
0.03
MAX4758, MAX4759
(N_1–N_4)
+25°C
102
MAX4759
(N_5–N_8)
+25°C
25
MAX4758, MAX4759
(COM1–COM4)
+25°C
284
MAX4759
(COM5–COM8)
+25°C
54
Total Harmonic Distortion
NO_, NC_ Off-Capacitance
COM_ On-Capacitance
VNO, VNC_ =
CNO_(OFF) , GND,
CNC_(OFF) f = 1MHz,
Figure 7
C(ON)
VNO_, VNC_ =
GND,
f = 1MHz,
Figure 7
%
pF
pF
DIGITAL I/O (IN_,)
Input Logic High
VIH
Input Logic Low
VIL
Input Leakage Current
IIN
V+ = 2.7V to 3.6V
TMIN to TMAX
1.4
V+ = 3.6V to 5.5V
TMIN to TMAX
2.0
V+ = 2.7V to 3.6V
TMIN to TMAX
0.5
V+ = 3.6V to 5.5V
TMIN to TMAX
0.6
VIN = 0 or V+
TMIN to TMAX
1
V
V
µA
_______________________________________________________________________________________
3
MAX4758/MAX4759
ELECTRICAL CHARACTERISTICS (continued)
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
TA
MIN
TMIN to TMAX
1.8
TYP
MAX
UNITS
5.5
V
POWER SUPPLY
Power-Supply Range
V+
Positive Supply Current
I+
+25°C
V+ = 5.5V, VIN_ = 0V or V+
0.01
TMIN to TMAX
1.0
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 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: RON and ∆RON matching specifications are guaranteed by design.
Note 5: ∆RON = 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.
Typical Operating Characteristics
(V+ = 3V, TA = +25°C, unless otherwise noted.)
V+ = 1.8V
V+ = 2V
V+ = 2.3V
V+ = 2.7V
1.0
0.5
V+ = 3V
V+ = 5V
0
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
VCOM (V)
4
1.6
RON (Ω)
1.5
MAX4758, MAX4759 (N_1–N_4)
V+ = 3V
1.8
2.0
1.6
1.4
1.4
1.2
1.2
1.0
1.0
0.8
0.8
0.6
0.6
0.4
0.4
0.2
0.2
0
0
0
0.5
1.0
1.5
VCOM (V)
2.0
2.5
3.0
V+ = 5V
MAX4758, MAX4759 (N_1–N_4)
1.8
RON (Ω)
2.0
2.0
MAX4758 toc02
MAX4758, MAX4759 (N_1–N_4)
MAX4758 toc01
2.5
ON-RESISTANCE
vs. VCOM AND TEMPERATURE
MAX4758 toc03
ON-RESISTANCE
vs. VCOM AND TEMPERATURE
ON-RESISTANCE vs. VCOM
RON (Ω)
MAX4758/MAX4759
Quad DPDT Audio/Data Switches in UCSP/QFN
TA+ = +85°C
TA+ = +25°C
TA+ = -40°C
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
VCOM (V)
_______________________________________________________________________________________
Quad DPDT Audio/Data Switches in UCSP/QFN
V+ = 1.8V
8
5
MAX4759 (N_5–N_8)
V+ = 3V
4
MAX4759 (N_5–N_8)
V+ = 5V
4
TA = +85°C
6
V+ = 2V
5
V+ = 2.3V
TA = +25°C
3
RON (Ω)
RON (Ω)
7
RON (Ω)
5
MAX4758 toc05
MAX4759 (N_5–N_8)
9
MAX4758 toc04
10
ON-RESISTANCE
vs. VCOM AND TEMPERATURE
MAX4758 toc06
ON-RESISTANCE
vs. VCOM AND TEMPERATURE
ON-RESISTANCE vs. VCOM
2
TA = +85°C
3
TA = +25°C
2
4
V+ = 2.7V
V+ = 5V
1
V+ = 3V
1
0
0
0.5
1.0
1.5
2.0
VCOM (V)
NO/NC OFF-LEAKAGE CURRENT
vs. TEMPERATURE
COM ON-LEAKAGE CURRENT
vs. TEMPERATURE
V+ = 5V
0.1
V+ = 3V
0.01
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
VCOM (V)
CHARGE INJECTION vs. VCOM
10
160
V+ = 3V / 5V
1
0.1
0.01
MAX4758, MAX4759 (N_1–N_4)
CL = 1nF
V+ = 5V
140
CHARGE INJECTION (pC)
1
0
MAX4758 toc08
MAX4758 toc07
V+ = 3V / 5V
3.0
2.5
VCOM (V)
10
120
100
V+ = 3V
80
60
40
20
0.001
0
0.001
35
85
60
-40
-15
TEMPERATURE (°C)
10
35
85
60
0
1
CHARGE INJECTION vs. VCOM
MAX4759 (N_5–N_8)
CL = 1nF
40
V+ = 5V
V+ = 3V
30
3
4
5
SUPPLY CURRENT vs. SUPPLY VOLTAGE
60
50
2
VCOM (V)
TEMPERATURE (°C)
4.0
20
MAX4758 toc11
10
3.5
SUPPLY CURRENT (nA)
-15
MAX4758 toc10
-40
CHARGE INJECTION (pC)
NO/NC OFF-LEAKAGE CURRENT (nA)
TA = -40°C
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
COM ON-LEAKAGE CURRENT (nA)
0
1
TA = -40°C
2
MAX4758 toc09
3
3.0
2.5
2.0
1.5
1.0
10
0.5
0
0
0
1
2
3
VCOM (V)
4
5
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
SUPPLY VOLTAGE (V)
_______________________________________________________________________________________
5
MAX4758/MAX4759
Typical Operating Characteristics (continued)
(V+ = 3V, TA = +25°C, unless otherwise noted.)
Typical Operating Characteristics (continued)
(V+ = 3V, TA = +25°C, unless otherwise noted.)
LOGIC THRESHOLD
vs. SUPPLY VOLTAGE
1.6
LOGIC THRESHOLD (V)
V+ = 5V
10
V+ = 3V
0.1
80
MAX4758 toc13
MAX4758 toc12
2.0
MAX4758, MAX4759 (N_1–N_4)
70
60
tON/tOFF (ns)
SUPPLY CURRENT (nA)
1000
TURN-ON/OFF TIMES
vs. SUPPLY VOLTAGE
1.2
VIH
VIL
0.8
MAX4758 toc14
SUPPLY CURRENT vs. TEMPERATURE
tON
50
40
tOFF
30
20
0.4
10
0
-15
10
35
85
60
0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
1.5
4.0
4.5
TURN-ON/OFF TIMES
vs. TEMPERATURE
TURN-ON/OFF TIMES
vs. TEMPERATURE
60
MAX4759 (N_5–N_8)
tON, V+ = 3V
50
70
MAX4758 toc16
tON
MAX4758, MAX4759 (N_1–N_4)
60
tON, V+ = 3V
50
40
30
40
tON, V+ = 5V
30
20
tOFF
10
tOFF, V+ = 5V
3.0
3.5
4.0
4.5
5.0
5.5
tON, V+ = 5V
30
10
tOFF, V+ = 5V
0
SUPPLY VOLTAGE (V)
40
tOFF, V+ = 3V
10
2.5
5.5
20
tOFF, V+ = 3V
0
5.0
50
tON/tOFF (ns)
tON/tOFF (ns)
60
6
3.5
TURN-ON/OFF TIMES
vs. SUPPLY VOLTAGE
70
2.0
3.0
SUPPLY VOLTAGE (V)
MAX4759 (N_5–N_8)
1.5
2.5
SUPPLY VOLTAGE (V)
80
20
2.0
TEMPERATURE (°C)
MAX4758 toc15
-40
MAX4758 toc17
0.001
tON/tOFF (ns)
MAX4758/MAX4759
Quad DPDT Audio/Data Switches in UCSP/QFN
0
-40
-15
10
35
TEMPERATURE (°C)
60
85
-40
-15
10
35
TEMPERATURE (°C)
_______________________________________________________________________________________
60
85
Quad DPDT Audio/Data Switches in UCSP/QFN
SKEW vs. TEMPERATURE
200
ON-LOSS (dB)
300
0
-20
400
SKEW (ps)
400
SKEW (ps)
MAX4759 (N_5–N_8)
INPUT RISE/FALL TIME = 15ns
CL = 50pF, FIGURE 3
V+ = 4.2V
500
FREQUENCY RESPONSE
20
MAX4758 toc19
MAX4758 toc18
MAX4759 (N_5–N_8)
INPUT RISE/FALL TIME = 15ns
CL = 50pF, FIGURE 3
500
600
MAX4758 toc20
SKEW vs. SUPPLY VOLTAGE
600
300
200
ON-LOSS
-40
CROSSTALK
-60
-80
OFF-ISOLATION
-100
100
100
0
0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
-40
10
35
60
MAX4758, MAX4759 (N_1–N_4)
V+ = 3V / 5V
-140
0.0001
85
0.01
1
100
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
FREQUENCY (MHz)
FREQUENCY RESPONSE
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
0
ON-LOSS
MAX4758, MAX4759 (N_1–N_4)
V+ = 3V, RL = 32Ω
1
MAX4758 toc23
1
MAX4758 toc21
20
-20
-15
MAX4759 (N_5–N_8)
RL = 600Ω
0.1
THD (%)
-40
CROSSTALK
-60
-80
OFF-ISOLATION
THD (%)
2.0
MAX4758 toc22
1.5
ON-LOSS (dB)
-120
0.1
0.01
-100
-120
MAX4759 (N_5–N_8)
V+ = 3V / 5V
-140
0.0001
0.001
0.01
1
FREQUENCY (MHz)
100
0.01
10
100
1k
FREQUENCY (Hz)
10k
100k
10
100
1k
10k
100k
FREQUENCY (Hz)
_______________________________________________________________________________________
7
MAX4758/MAX4759
Typical Operating Characteristics (continued)
(V+ = 3V, TA = +25°C, unless otherwise noted.)
Quad DPDT Audio/Data Switches in UCSP/QFN
MAX4758/MAX4759
Pin Description
PIN
MAX4758
THIN
QFN
MAX4759
FUNCTION
UCSP
UCSP
1
A1
1
A1
NC1
2
B2
2
B2
COM2
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
C3, D4
5
C3, D4
V+
Positive Supply Voltage
Analog Switch 1, Normally Closed Terminal 1
Analog Switch 2, Common Terminal 2
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
10
B6
10
B6
COM4
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
19
F6
19
F6
NC8
20
E5
20
E5
COM7
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
C4, D3
23
C4, D3
GND
Ground
Analog Switch 4, Normally Closed Terminal 4
Analog Switch 4, Common Terminal 4
Analog Switch 8, Common Terminal 8
Analog Switch 8, Normally Closed Terminal 8
Analog Switch 7, Common Terminal 7
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
27
F1
27
F1
NC5
28
E1
28
E1
COM5
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
—
EP
8
NAME
THIN
QFN
—
—
EP
—
Analog Switch 6, Common Terminal 6
Analog Switch 5, Normally Closed Terminal 5
Analog Switch 5, Common Terminal 5
Analog Switch 1, Common Terminal 1
EN
Output Enable, Active Low
EP
Exposed Pad. Connect to GND
_______________________________________________________________________________________
Quad DPDT Audio/Data Switches in UCSP/QFN
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.
MAX4758/MAX4759
Detailed Description
POSITIVE SUPPLY
V+
D1
MAX4758
MAX4759
NO
COM
GND
Figure 1. Overvoltage Protection Using an External Blocking
Diode
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, PC 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”.
Power-Supply Sequencing
CMOS devices require proper power-supply sequencing. Always apply V+ before the analog signals, espe-
_______________________________________________________________________________________
9
Quad DPDT Audio/Data Switches in UCSP/QFN
MAX4758/MAX4759
Timing Circuits/Timing Diagrams
MAX4758
MAX4759
V+
VN_
LOGIC
INPUT
V+
COM_
NO_
OR NC_
50%
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_
t r < 5ns
t f < 5ns
50%
V+
IN DEPENDS ON SWITCH CONFIGURATION;
INPUT POLARITY DETERMINED BY SENSE OF SWITCH.
)
Figure 2. Switching Time
V+
MAX4758
MAX4759
LOGIC
INPUT
V+
VN_
50%
0V
NC_
VOUT
COM_
NO_
RL
IN_
LOGIC
INPUT
V+
CL
GND
0.9 x VOUT
VOUT
tBBM
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
Figure 3. Break-Before-Make Interval
10
______________________________________________________________________________________
Quad DPDT Audio/Data Switches in UCSP/QFN
tri
90%
50%
A
TxD+
B
10%
INPUT A
tskew_i
CL
Rs
INPUT A-
90%
50%
10%
tfi
tro
A-
TxD-
B-
10%
OUTPUT B
90%
50%
tskew_o
CL
Rs
OUTPUT B-
Rs = 39Ω
CL = 50pF
90%
50%
10%
tfo
|tro - tri| DELAY DUE TO SWITCH FOR RISING INPUT AND RISING OUTPUT SIGNALS.
|tfo - tfi|
DELAY DUE TO SWITCH FOR FALLING INPUT AND FALLING OUTPUT SIGNALS.
|tskew_o| CHANGE IN SKEW THROUGH THE SWITCH FOR OUTPUT SIGNALS.
|tskew_i| CHANGE IN SKEW THROUGH THE SWITCH FOR INPUT SIGNALS.
Figure 4. Input/Output Skew Timing Diagram
V+
MAX4758
MAX4759
∆VOUT
V+
RGEN
VOUT
COM_
NC_
OR NO_
VOUT
IN
OFF
CL
V GEN
GND
ON
OFF
IN_
VIL TO VIH
IN
OFF
ON
OFF
Q = ∆V OUT ✕ C L
LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES
THAT HAVE THE OPPOSITE LOGIC SENSE.
Figure 5. Charge Injection
______________________________________________________________________________________
11
MAX4758/MAX4759
Timing Circuits/Timing Diagrams (continued)
Quad DPDT Audio/Data Switches in UCSP/QFN
MAX4758/MAX4759
Timing Circuits/Timing Diagrams (continued)
+5V 10nF
OFF-ISOLATION = 20log ✕
VOUT
VIN
ON-LOSS = 20log ✕
VOUT
VIN
NETWORK
ANALYZER
0V OR V+
IN_
NC1
V+
MAX4758
MAX4759
50Ω
MEAS
VOUT
NO1*
50Ω
50Ω
VIN
COM1
GND
V
CROSSTALK = 20log ✕ OUT
VIN
REF
50Ω
50Ω
*FOR CROSSTALK THIS PIN IS NO2.
NC2 AND COM2 ARE OPEN.
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.
Figure 6. On-Loss, Off-Isolation, and Crosstalk
Typical Operating Circuit
10nF
COM_
V+
INA
NO1
V+
NC1
NO2
MAX4758
MAX4759
NC2
IN
CAPACITANCE
METER
f = 1MHz
NC_ or
NO_
GND
COM1
INTERNAL
SPEAKER
COM2
EXTERNAL
SPEAKER
VIL OR VIH
IND
NO7
COM7
SWITCHING DATA SIGNALS
NC7
NO8
COM8
Figure 7. Channel On-/Off-Capacitance
NC8
MAX4759
12
______________________________________________________________________________________
Quad DPDT Audio/Data Switches in UCSP/QFN
TOP VIEW
MAX4758/MAX4759
COM5
28
COM4
N.C.
COM3
29
COM2
NO6
COM1
30
NC4
NO5
NC3
31
INB
N.C.
INA
32
NC2
NO1
NC1
33
6
NO2
5
34
4
N.C.
3
35
2
COM1
1
36
(BUMP SIDE DOWN)
A
B
NO1
NO2
V+
NO3
GND
N06
GND
NO7
V+
NO8
D
COM5
COM6
NC5
NC6
COM7
COM8
NC7
NC8
E
INC
IND
1
27
NC5
COM2
2
26
COM6
NC2
3
25
NC6
INA
4
24
INC
23
GND
NO4
C
NO5
NC1
MAX4758
MAX4759
V+
5
INB
6
22
IND
NC3
7
21
NC7
COM3
8
20
COM7
NC4
9
19
NC8
INA NO1/NO2
OFF
LOW
ON
HIGH
INB NO3/NO4
OFF
LOW
ON
HIGH
INC NO5/NO6
LOW
OFF
HIGH
ON
IND NO7/NO8
OFF
LOW
ON
HIGH
NC1/NC2
ON
OFF
NC3/NC4
ON
OFF
NC5/NC6
ON
OFF
NC7/NC8
ON
OFF
10
11
12
13
14
15
16
17
18
N.C.
NO3
NO4
N.C.
NO8
NO7
N.C.
COM8
UCSP
MAX4758/MAX4759
COM4
F
THIN QFN
NOTE: EXPOSED PADDLE CONNECTED TO GND OR FLOATING.
Chip Information
TRANSISTOR COUNT: 1432
PROCESS: CMOS
______________________________________________________________________________________
13
MAX4758/MAX4759
Pin Configurations/Truth Tables
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 6x6x0.8.EPS
MAX4758/MAX4759
Quad DPDT Audio/Data Switches in UCSP/QFN
D2
D
CL
D/2
b
D2/2
k
E/2
E2/2
(NE-1) X e
E
CL
E2
k
e
L
(ND-1) X e
e
L
CL
CL
L1
L
L
e
A1
A2
e
A
PACKAGE OUTLINE
36, 40, 48L THIN QFN, 6x6x0.8mm
21-0141
E
1
2
NOTES:
1. DIMENSIONING & TOLERANCING CONFORM TO ASME Y14.5M-1994.
2. ALL DIMENSIONS ARE IN MILLIMETERS. ANGLES ARE IN DEGREES.
3. N IS THE TOTAL NUMBER OF TERMINALS.
4. THE TERMINAL #1 IDENTIFIER AND TERMINAL NUMBERING CONVENTION SHALL CONFORM TO JESD 95-1
SPP-012. DETAILS OF TERMINAL #1 IDENTIFIER ARE OPTIONAL, BUT MUST BE LOCATED WITHIN THE
ZONE INDICATED. THE TERMINAL #1 IDENTIFIER MAY BE EITHER A MOLD OR MARKED FEATURE.
5. DIMENSION b APPLIES TO METALLIZED TERMINAL AND IS MEASURED BETWEEN 0.25 mm AND 0.30 mm
FROM TERMINAL TIP.
6. ND AND NE REFER TO THE NUMBER OF TERMINALS ON EACH D AND E SIDE RESPECTIVELY.
7. DEPOPULATION IS POSSIBLE IN A SYMMETRICAL FASHION.
8. COPLANARITY APPLIES TO THE EXPOSED HEAT SINK SLUG AS WELL AS THE TERMINALS.
9. DRAWING CONFORMS TO JEDEC MO220, EXCEPT FOR 0.4mm LEAD PITCH PACKAGE T4866-1.
10. WARPAGE SHALL NOT EXCEED 0.10 mm.
PACKAGE OUTLINE
36, 40, 48L THIN QFN, 6x6x0.8mm
21-0141
14
E
2
2
______________________________________________________________________________________
Quad DPDT Audio/Data Switches in UCSP/QFN
36L,UCSP.EPS
PACKAGE OUTLINE, 6x6 UCSP
21-0082
J
1
1
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
© 2003 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
MAX4758/MAX4759
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.)