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MAX4930
Technical data
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MAXIM MAX4908, MAX4909, MAX4930, MAX4932 Technical data

MAX4908/MAX4909/MAX4930/MAX4932
Dual 3:1 Clickless Audio Multiplexers
with Negative-Signal Handling
________________________________________________________________
Maxim Integrated Products
1
19-3958; Rev 2; 6/08
MAX4908 MAX4909 MAX4930 MAX4932
TDFN
(3mm x 3mm)
245
13 11 10
Y1
1
14312
Y2Y CB2 N.C. GND
6
9
Y0
X2N.C.V
CC
XX1X0CB1
7
8
TOP VIEW (BUMPS ON BOTTOM)
TOP VIEW
+
EP
WLP
(1.5mm x 2mm)
MAX4908 MAX4909 MAX4930 MAX4932
1234
B
A
C
Y0 Y1 Y2 Y
GND CB1 CB2 V
CC
X0 X1 X2 X
+
EP = EXPOSED PAD. CONNECT EP TO GND OR LEAVE UNCONNECTED.
Pin Configurations
General Description
The MAX4908/MAX4909/MAX4930/MAX4932 dual 3:1 clickless audio multiplexers feature negative-signal capability that allows signals as low as V
CC
- 5.5V to pass through without distortion. These analog multiplex­ers have a low on-resistance (0.38Ω), low supply current, and operate from a single +1.8V to +5.5V supply.
The MAX4908 has shunt resistors on all input terminals, and the MAX4909 has shunt resistors on all input termi­nals except X0 and Y0. The MAX4930 has shunt resistors only on the X2 and Y2 terminals, and the MAX4932 has no shunt resistors. The shunt resistor feature reduces click-and-pop sounds by automatically discharging the capacitance at the input terminal when they are not con­nected. A break-before-make feature further reduces popping.
The MAX4908/MAX4909/MAX4930/MAX4932 use two digital control inputs CB1 and CB2 to switch between sig­nals. The digital control inputs can accept up to +5.5V independent of the supply voltage.
The MAX4908/MAX4909/MAX4930/MAX4932 are avail­able in 12-bump WLP and 14-pin TDFN-EP packages and operate over the -40°C to +85°C extended temper­ature range.
Applications
Cell Phones
PDAs and Handheld Devices
Notebook Computers
MP3 Players
Features
♦ Distortion-Free Negative Signal Throughput Down
to V
CC
- 5.5V
♦ Internal Shunt Resistors Reduce Click-and-Pop
Sounds
♦ High PSRR Reduces Supply Noise ♦ Low On-Resistance: 0.38Ω (typ) ♦ Channel-to-Channel Matching: 0.1Ω (max) ♦ On-Resistance Flatness: 0.35Ω (max) ♦ Single +1.8V to +5.5V Supply Voltage ♦ -70dB (typ) Crosstalk (20kHz) ♦ -80dB (typ) Off-Isolation (20kHz) ♦ 0.02% (typ) Total Harmonic Distortion ♦ 50nA Leakage Current ♦ 50nA Supply Current
Ordering Information
PART
PIN­PACKAGE
TOP MARK
MAX4908ETD+T
ABI
M AX 4908E WC + T*
12 WLP AAF
MAX4909ETD+T
ABJ
M AX 4909E WC + T*
12 WLP AAG
MAX4930ETD+T
ADM
M AX 4930E WC + T*
12 WLP ADY
MAX4932ETD+T
ADN
M AX 4932E WC + T*
12 WLP AAN
+
Denotes a lead-free/RoHS-compliant package.
T = Tape and reel.
*
Future product—contact factory for availability.
**
EP = Exposed pad.
TEMP RANGE
-40°C to +85°C 14 TDFN-EP**
-40°C to +85°C
-40°C to +85°C 14 TDFN-EP**
-40°C to +85°C
-40°C to +85°C 14 TDFN-EP**
-40°C to +85°C
-40°C to +85°C 14 TDFN-EP**
-40°C to +85°C
MAX4908/MAX4909/MAX4930/MAX4932
Dual 3:1 Clickless Audio Multiplexers with Negative-Signal Handling
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VCC= +2.7V to +5.5V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at VCC= +3.0V, TA= +25°C.) (Note 1)
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
CC
, CB_ ...............................................................-0.3V to +6.0V
X, X_, Y, Y_ .........................................(V
CC
- 6V) to (V
CC
+ 0.3V)
Continuous Current X, X_, Y, Y_ .....................................±300mA
Peak Current X, X_, Y, Y_ (pulsed at 1ms,
50% Duty Cycle)..........................................................±400mA
Peak Current X, X_, Y, Y_ (pulsed at 1ms,
10% Duty Cycle) ..........................................................±500mA
Continuous Power Dissipation (T
A
= +70°C)
12-Bump WLP (derate 8.5mW/°C above +70°C).............678mW
14-Pin TDFN, Single-Layer Board
(derate 18.5mW/°C above +70°C).............................1482mW
14-Pin TDFN, Multilayer Board
(derate 24.4mW/°C above +70°C).............................1951mW
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
PARAMETER
CONDITIONS
UNITS
POWER SUPPLY
Supply Voltage V
CC
1.8 5.5 V
VCC = +5.5V, V
CB_
= 0V or V
CC
2
VCC = +2.7V, V
CB_
= +0.5V or +1.4V 4
Supply Current I
CC
VCC = +5.5V, V
CB_
= +0.5V or +1.4V 8
µA
ANALOG SWITCH
Analog Signal Range (Note 2)
VX_, VY_,
V
X
, V
Y
VCC -
V
TA = +25°C
On-Resistance (Note 3)
R
ON
V
C C
= + 2.7V ; V X _ = V Y _ =
V
C C
– 5.5V ; - 1V , 0V , + 1V ,
0.8
Ω
On-Resistance Match Between Channels (Notes 3 and 4)
ΔR
ON
Between X0 and Y0, X1 and Y1, X2 and Y2;
0.1 Ω
On-Resistance Flatness (Notes 3 and 5)
R
FLAT
VCC = +2.7V; VX_ = VY_ = V
CC
– 5.5V,
-1V, 0, +1V, +2V, V
CC; IX_
= I
Y_
= 100mA
Ω
Shunt Switch Resistance R
SH
2 3.8 6 kΩ
TA = +25°C -50 +50
X0, Y0 Off-Leakage Current
( M AX 4909/M AX4930/M AX 4932)
VCC = +2.7V, switch open, V
X0
or VY0 = -2.5V or +2.5V,
V
X
or VY = +2.5V or -2.5V
TA = +25°C -50 +50
X1, Y1 Off-Leakage Current (MAX4930/MAX4932)
V
CC
= +2.7V, switch open,
V
X1
or VY1 = -2.5V or +2.5V,
V
X
or VY = +2.5V or -2.5V
TA = +25°C -50 +50
X2, Y2 Off-Leakage Current (MAX4932)
)
VCC = +2.7V, switch open, V
X2
or VY2 = -2.5V or +2.5V,
V
X
or VY = +2.5V or -2.5V
nA
TA = +25°C
X, Y On-Leakage Current I
L(ON)
VCC = +2.7V, switch closed, V
X0
or VY0 = -2.5V or +2.5V
-2.5V or +2.5V or floating
nA
SYMBOL
MIN TYP MAX
0.05
+ 2V , V
C C ; IX _
= I
Y _
VCC = +2.7V; VX_ or VY_ = 0V; I
I
L(OFF
or unconnected, VX = VY =
= 100m A
T
= T
A
X_
TA = T
TA = T
TA = T
TA = T
to T
MIN
MAX
= IY_= 100mA
to T
MIN
MAX
to T
MIN
MAX
to T
MIN
MAX
to T
MIN
MAX
V
5.5V
0.38 0.75
CC
0.35
-200 +200
-200 +200
-200 +200
-100 +100
-300 +300
MAX4908/MAX4909/MAX4930/MAX4932
Dual 3:1 Clickless Audio Multiplexers
with Negative-Signal Handling
_______________________________________________________________________________________ 3
Note 1: All parameters are production tested at TA= +25°C and guaranteed by design over the specified temperature range. Note 2: Signals on X, Y, X_, or Y_ exceeding V
CC
are clamped by internal diodes. Limit forward-diode current to maximum current rating.
Note 3: Guaranteed by design; not production tested. Note 4: ΔR
ON
= R
ON(MAX)
– R
ON(MIN)
.
Note 5: Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the specified
analog signal ranges.
Note 6: X Off-Isolation = 20log
10[VX
/ VX_], VX = output, VX_ = input to off switch. Y Off-Isolation = 20log10[VY/ VY_], VY = output,
V
Y
_ = input to off switch.
ELECTRICAL CHARACTERISTICS (continued)
(VCC= +2.7V to +5.5V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at VCC= +3.0V, TA= +25°C.) (Note 1)
PARAMETER
CONDITIONS
UNITS
DYNAMIC CHARACTERISTICS
Turn-On Time t
ON
VCC = +2.7V, CB_ = low to high, RL = 50Ω, C
L
= 5pF, Figure 2
1.0 µs
Turn-Off Time t
OFF
VCC = +2.7V, CB_ = high to low, RL = 50Ω, C
L
= 5pF, Figure 2
1.0 µs
Break-Before-Make Delay Time
t
D
VCC = +2.7V, CB_ = low to high or high to low, R
L
= 50Ω, CL = 5pF, Figure 3
1.0 15 ns
Charge Injection Q VX = VY = 0V, R
GEN
= 0Ω, CL = 1nF, Figure 4 300 pC
Power-Supply Rejection Ratio
PSRR
f = 20kHz, V
X
or VY = 1V
RMS
, RL = 50Ω,
C
L
= 5pF
60 dB
Off-Isolation V
ISO
f = 20kHz, VX = VY = 1V
RMS, RL
= 50Ω,
Figure 5 (Note 6)
-80 dB
Crosstalk V
CT
f = 20kHz, VX or VY = 1V
RMS,
RL = 50Ω,
Figure 5
-70 dB
Total Harmonic Distortion THD
f = 20H z to 20kH z, V
X
or V Y = 0.5V
P - P
, RL = 50Ω ,
D C b i as = 0
%
X_, Y_ Off-Capacitance
(
)
)
f = 1MHz, VX or VY = 0.5V
P-P,
DC bias = 0,
Figure 6
200 pF
X, Y On-Capacitance
C
X(ON)
)
f = 1MHz, VX or VY = 0.5V
P-P,
DC bias = 0,
Figure 6
450 pF
DIGITAL INPUTS (CB_)
Input Logic High V
IH
1.4 V
Input Logic Low V
IL
0.5 V
Input Leakage Current I
CB
VCB_ = 0V or V
CC
-1 +1 µA
SYMBOL
CX_
OFF
C
Y_(OFF
C
Y(ON
MIN TYP MAX
0.02
MAX4908/MAX4909/MAX4930/MAX4932
Dual 3:1 Clickless Audio Multiplexers with Negative-Signal Handling
4 _______________________________________________________________________________________
Typical Operating Characteristics
(VCC= 3.0V, TA = +25°C, unless otherwise noted.)
CHANNEL ON-RESISTANCE
vs. COM VOLTAGE
MAX4908/09 toc01
COM VOLTAGE (V)
ON-RESISTANCE (Ω)
543210-1-2-3
0.5
1.0
1.5
2.0
0
-4
VCC = 1.8V
VCC = 2.0V
VCC = 2.3V
VCC = 2.7V
VCC = 3V
VCC = 5V
CHANNEL ON-RESISTANCE
vs. COM VOLTAGE
MAX4908/09 toc02
COM VOLTAGE (V)
ON-RESISTANCE (Ω)
210-1-2
0.2
0.4
0.6
0.8
1.0
0
-3 3
TA = +85°C
TA = +25°C
TA = -40°C
VCC = 3V
CHANNEL ON-RESISTANCE
vs. X/Y VOLTAGE
MAX4908/09 toc03
X/Y VOLTAGE (V)
ON-RESISTANCE (Ω)
43210
0.2
0.4
0.6
0
-1 5
TA = +85°C
TA = +25°C
TA = -40°C
VCC = 5V
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX4908/09 toc04
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (nA)
5.34.84.33.83.32.82.3
10
20
30
40
50
60
0
1.8
V
CB1
= V
CB2
= 0V
TURN-OFF/TURN-ON TIME
vs. SUPPLY VOLTAGE
MAX4908/09 toc05
SUPPLY VOLTAGE (V)
t
ON
/t
OFF
(ns)
5.34.83.8 4.32.8 3.32.3
50
90
130
170
210
250
290
330
370
410
10
1.8
X0 tON (CB1 = HIGH TO LOW) CB2 = HIGH
X2 t
OFF
(CB1 = HIGH TO LOW)
X2 tON (CB1 = LOW TO HIGH)
X0 t
OFF
(CB1 = LOW TO HIGH)
LOGIC THRESHOLD
vs. SUPPLY VOLTAGE
MAX4908/09 toc06
SUPPLY VOLTAGE (V)
LOGIC THRESHOLD (V)
5.34.84.33.83.32.82.3
0.4
0.8
1.2
1.6
2.0
0
1.8
V
CB_
RISING
V
CB_
FALLING
SUPPLY CURRENT
vs. LOGIC INPUT VOLTAGE
MAX4908/09 toc07
LOGIC INPUT VOLTAGE (V)
SUPPLY CURRENT (μA)
4.03.01.40.5
0.5
1.0
1.5
2.0
0
0 5.0
VCC = +4.3V
1.0
2.0
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