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PDF MAX4903 Data sheet ( Hoja de datos )
| Número de pieza | MAX4903 | |
| Descripción | Low-RON & Dual-SPST/Single-SPDT Clickless Switches with Negative Rail Capability | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MAX4903 (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
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19-3775; Rev 2; 5/06
www.DataSheet4U.com
Low-RON, Dual-SPST/Single-SPDT Clickless
Switches with Negative Rail Capability
General Description
The MAX4901–MAX4905 switches feature negative
signal capability that allows signals below ground to pass
through without distortion. The MAX4901/MAX4902 are a
dual SPST (single-pole/single-throw) and the MAX4903/
MAX4904/MAX4905 are a single SPDT (single-
pole/double-throw) configuration. These analog switches
operate from a single +1.8V to +5.5V supply and have
low 0.6Ω on-resistance, making them ideal for switching
audio signals.
The MAX4905 includes a comparator that can be used
for headphone detection or mute/send key function. The
MAX4902/MAX4904/MAX4905 have internal shunt resis-
tors to automatically discharge any capacitance at the
NO_ and NC connection points. This reduces click-and-
pop sounds that occur when switching audio signals
between pre-charged points. A break-before-make fea-
ture and auto-discharge also help to reduce popping.
These SPST and SPDT switches are available in
space-saving 8-pin TDFN and 9-bump UCSP™ pack-
ages and operate over the -40°C to +85°C extended
temperature range.
Applications
Cell Phones
Notebook Computers
PDAs and Handheld Devices MP3 Players
UCSP is a trademark of Maxim Integrated Products, Inc.
Features
♦ Distortion-Free Signal Throughput Down
to VCC - 5.5V
♦ Comparator for Headphone or
Mute Detection (MAX4905)
♦ Clickless Switches with Internal Shunt Resistors
(MAX4902/MAX4904/MAX4905)
♦ 0.6Ω (typ) Low On-Resistance (RON)
♦ 0.25Ω On-Resistance Flatness
♦ +1.8V to +5.5V Supply Voltage
♦ 0.04% THD
Pin Configurations
TOP VIEW
BUMPS ON BOTTOM
MAX4901/MAX4902
1 23
MAX4903/MAX4904/MAX4905
1 23
A
COM1
B
VCC
C
COM2
NO1
N.C.
NO2
IN1
GND
IN2
A
VCC
B
NO
IN
COM N.C. (CMPO) GND
C
N.C. NC N.C. (CMP-)
3 x 3 UCSP
3 x 3 UCSP
( ) MAX4905 ONLY
Pin Configurations continued at end of data sheet.
Ordering Information/Selector Guide
PART
PIN-PACKAGE
TOP MARK CONFIGURATION
MAX4901EBL-T 1.5mm x 1.5mm 9 UCSP-9
MAX4901ETA-T
8 TDFN-8
AEU
AOW
2 x SPST
2 x SPST
MAX4902EBL-T 1.5mm x 1.5mm 9 UCSP-9
MAX4902ETA-T
8 TDFN-8
AEV
AOX
2 x SPST
2 x SPST
MAX4903EBL-T 1.5mm x 1.5mm 9 UCSP-9
AEY
1 x SPDT
MAX4903ETA-T
8 TDFN-8
AOY
1 x SPDT
MAX4904EBL-T 1.5mm x 1.5mm 9 UCSP-9
AEW
1 x SPDT
MAX4904ETA-T
8 TDFN-8
AOZ
1 x SPDT
MAX4905EBL-T 1.5mm x 1.5mm 9 UCSP-9
AEX
1 x SPDT
MAX4905ETA-T
8 TDFN-8
APA 1 x SPDT
Note: All devices operate over the -40°C to +85°C operating temperature range.
COMPARATOR
No
No
No
No
No
No
No
No
Yes
Yes
SHUNT
No
No
Yes
Yes
No
No
Yes
Yes
Yes
Yes
PKG CODE
B9-1
T833-2
B9-1
T833-2
B9-1
T833-2
B9-1
T833-2
B9-1
T833-2
________________________________________________________________ Maxim Integrated Products 1
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 page  
www.DataSheet4U.com
Low-RON, Dual-SPST/Single-SPDT Clickless
Switches with Negative Rail Capability
(TA = +25°C, VCC = 3.0V, unless otherwise noted.)
Typical Operating Characteristics
ON-RESISTANCE vs. COM VOLTAGE
6
5
VCC = 1.8V
4
VCC = 2.0V
3
2
VCC = 2.3V
V+ = 2.5V
V+ = 3.0V
1 V+ = 5.0V
0
-4 -3 -2 -1 0 1 2 3 4 5
COM VOLTAGE (V)
ON-RESISTANCE vs. COM VOLTAGE
1.2
VCC = 5.0V
1.0
0.8
TA = +85°C
0.6 TA = +25°C
0.4
TA = -40°C
0.2
0
-1 0 1 2 3 4 5
COM VOLTAGE (V)
ON-RESISTANCE vs. COM VOLTAGE
1.2
VCC = 3.0V
1.0
0.8 TA = +85°C
TA = +25°C
0.6
TA = -40°C
0.4
0.2
0
-3 -2 -1 0 1 2 3
COM VOLTAGE (V)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
(MAX4901–MAX4904)
0.6
SUPPLY CURRENT vs. SUPPLY VOLTAGE
(MAX4905)
6
TURN-ON/TURN-OFF TIME
vs. SUPPLY VOLTAGE
70
0.5
0.4
0.3
0.2
0.1
0
1.8 2.3 2.8 3.3 3.8 4.3 4.8 5.3
SUPPLY VOLTAGE (V)
5
4
3
2
1
0
1.8 2.3 2.8 3.3 3.8 4.3 4.8 5.3
SUPPLY VOLTAGE (V)
60
50
40
tON
30
tOFF
20
10
0
1.8 2.3 2.8 3.3 3.8 4.3 4.8 5.3
SUPPLY VOLTAGE (V)
TURN-ON/TURN-OFF TIME
vs. TEMPERATURE
40
VCC = 3.0V
30
tON
20
10 tOFF
LOGIC THRESHOLD vs. SUPPLY VOLTAGE
2.0
VIN RISING
1.6
1.2
0.8 VIN FALLING
0.4
0
-40
-15 10 35 60
TEMPERATURE (°C)
85
0
1.8 2.3 2.8 3.3 3.8 4.3 4.8 5.3
SUPPLY VOLTAGE (V)
_______________________________________________________________________________________ 5
5 Page 
www.DataSheet4U.com
Low-RON, Dual-SPST/Single-SPDT Clickless
Switches with Negative Rail Capability
Test Circuits/Timing Diagrams (continued)
+5V 10nF
0V OR VCC IN_
VCC
COM1
MAX4901–MAX4905
NC1 NO1*
50Ω GND
VIN
VOUT
NETWORK
ANALYZER
50Ω 50Ω
MEAS
50Ω
REF
50Ω
MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT IC TERMINALS.
OFF-ISOLATION IS MEASURED BETWEEN COM_ AND "OFF" NO_ OR NC TERMINAL ON EACH SWITCH.
-3dB BANDWIDTH 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 4. -3dB Bandwidth, Off-Isolation, and Crosstalk
CAPACITANCE
METER
f = 1MHz
10nF VCC
VCC
COM_
MAX4901–
MAX4905
NC_ or
NO_
GND
IN
VIL OR VIH
PROCESS: BiCMOS
Figure 5. Channel Off-/On-Capacitance
OFF-ISOLATION = 20log
VOUT
VIN
LOSS = 20log VOUT
VIN
CROSSTALK = 20log VOUT
VIN
*FOR CROSSTALK THIS PIN IS NO2.
NC2 AND COM2 ARE OPEN.
Chip Information
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet MAX4903.PDF ] | |
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