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PDF MAX4932 Data sheet ( Hoja de datos )
| Número de pieza | MAX4932 | |
| Descripción | Dual 3:1 Clickless Audio Multiplexers | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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MAX4908/MAX4909/
MAX4930/MAX4932
Dual 3:1 Clickless Audio Multiplexers
with Negative-Signal Handling
General Description
The MAX4908/MAX4909/MAX4930/MAX4932 dual
3:1 clickless audio multiplexers feature negative-signal
capability that allows signals as low as VCC - 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 wafer-level package (WLP) and 14-pin TDFN-EP
package and operate over the -40°C to +85°C extended
temperature range.
Applications
●● Cell Phones
●● PDAs and Handheld Devices
●● Notebook Computers
●● MP3 Players
Benefits and Features
●● Distortion-Free Negative Signal Throughput Down to
VCC - 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
19-3958; Rev 4; 3/16
1 page  
MAX4908/MAX4909/
MAX4930/MAX4932
Dual 3:1 Clickless Audio Multiplexers
with Negative-Signal Handling
Typical Operating Characteristics (continued)
(VCC = 3.0V, TA = +25°C, unless otherwise noted.)
CHARGE INJECTION
vs. X/Y COMMON VOLTAGE
600
400
200
VCC = 2V
0
VCC = 5V
-200
-400
-3 -2 -1 0 1 2 3 4 5
X/Y VOLTAGE (V)
OFF-ISOLATION vs. FREQUENCY
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
0.001
0.01 0.1 1 10
FREQUENCY (MHz)
100
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
1
RL = 50Ω
0.1
0.01
0.001
0.01
0.1 1 10
FREQUENCY (kHz)
100
FREQUENCY RESPONSE
0
-3
-6
-9
-12
-15
-18
0.001
0.01 0.1 1 10
FREQUENCY (MHz)
100
CROSSTALK vs. FREQUENCY
0
-10
-20
-30
-40
-50
-60
-70
-80
0.001
0.01 0.1 1 10
FREQUENCY (MHz)
100
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
100
90 RL = 50Ω
80
70
60
50
40
30
20
10
0
0.1
1 10 100
FREQUENCY (kHz)
1000
www.maximintegrated.com
Maxim Integrated │ 5
5 Page 
MAX4908/MAX4909/
MAX4930/MAX4932
Dual 3:1 Clickless Audio Multiplexers
with Negative-Signal Handling
Test Circuits/Timing Diagrams
VCC
VCB1, VCB2
VCC
CB1 X2, Y2 VCC
CB2 MAX4908 X1, X2,
MAX4909 Y1, Y2
MAX4930
MAX4932
GND X, Y
RL
VOUT
CL
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
Figure 2. Switching Time
LOGIC VCC
INPUT 0V
50%
tr < 5ns
tf < 5ns
SWITCH 0V
OUTPUT
tOFF
VOUT 0.8 x V0UT
0.8 x VOUT
tON
CB_ DEPENDS ON SWITCH CONFIGURATION;
INPUT POLARITY DETERMINED BY SENSE OF SWITCH.
VCC
VCB1
CB1
VCB2
VCC
CB2
VCC
MAX4908
MAX4909
MAX4930
MAX4932
X0–X2,
Y0–Y2
VCC
GND X, Y
RL
VOUT
CL
LOGIC VCC
INPUT
0V
50%
VOUT
0.8 x VOUT
tBBM
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
Figure 3. Break-Before-Make Interval
VGEN
VCC
VCC
MAX4908
MAX4909
MAX4930
MAX4932
RGEN
X_
OR Y_
X OR Y
GND CB_
VIL TO VIH
Figure 4. Charge Injection
VOUT
CL
VOUT
CB_
OFF
∆VOUT
OFF
ON
OFF
CB_
ON
Q = (∆VOUT)(CL)
OFF
LOGIC-INPUT WAVEFORMS INVERTED FOR SWITCHES
THAT HAVE THE OPPOSITE LOGIC SENSE.
www.maximintegrated.com
Maxim Integrated │ 11
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet MAX4932.PDF ] | |
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