MAX4902 Maxim, MAX4902 Datasheet

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MAX4902

Manufacturer Part Number
MAX4902
Description
The MAX4901–MAX4905 switches feature negative signal capability that allows signals below ground to pass through without distortion
Manufacturer
Maxim
Datasheet
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.
19-3775; Rev 2; 5/06
UCSP is a trademark of Maxim Integrated Products, Inc.
Note: All devices operate over the -40°C to +85°C operating temperature range.
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.
Cell Phones
PDAs and Handheld Devices
MAX4902EBL-T
MAX4903EBL-T
MAX4904EBL-T
MAX4905EBL-T
MAX4901ETA-T
MAX4902ETA-T
MAX4903ETA-T
MAX4904ETA-T
MAX4905ETA-T
MAX4901EBL-T
PART
Low-R
________________________________________________________________ Maxim Integrated Products
1.5m m x 1.5m m 9 U C S P - 9
1.5m m x 1.5m m 9 U C S P - 9
1.5m m x 1.5m m 9 U C S P - 9
1.5m m x 1.5m m 9 U C S P - 9
1.5m m x 1.5m m 9 U C S P - 9
Switches with Negative Rail Capability
PIN-PACKAGE
General Description
8 TD FN - 8
8 TD FN - 8
8 TD FN - 8
8 TD FN - 8
8 TD FN - 8
ON
, Dual-SPST/Single-SPDT Clickless
Notebook Computers
MP3 Players
Applications
TOP MARK
AOW
AEW
AOX
AOY
AOZ
AEU
AEV
AEY
AEX
APA
CONFIGURATION
Ordering Information/Selector Guide
1 x SPDT
1 x SPDT
1 x SPDT
1 x SPDT
1 x SPDT
1 x SPDT
2 x SPST
2 x SPST
2 x SPST
2 x SPST
♦ Distortion-Free Signal Throughput Down
♦ Comparator for Headphone or
♦ Clickless Switches with Internal Shunt Resistors
♦ 0.6Ω (typ) Low On-Resistance (R
♦ 0.25Ω On-Resistance Flatness
♦ +1.8V to +5.5V Supply Voltage
♦ 0.04% THD
A
B
C
to V
Mute Detection (MAX4905)
(MAX4902/MAX4904/MAX4905)
BUMPS ON BOTTOM
Pin Configurations continued at end of data sheet.
COM1
COM2
V
TOP VIEW
CC
1
CC
MAX4901/MAX4902
3 x 3 UCSP
- 5.5V
NO1
N.C.
NO2
2
COMPARATOR
GND
IN1
IN2
3
Yes
Yes
No
No
No
No
No
No
No
No
Pin Configurations
C
A
B
SHUNT
MAX4903/MAX4904/MAX4905
COM
N.C.
V
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
1
CC
ON
( ) MAX4905 ONLY
3 x 3 UCSP
N.C. (CMPO)
)
Features
NO
NC
2
PKG CODE
N.C. (CMP-)
T833-2
T833-2
T833-2
T833-2
T833-2
B9-1
B9-1
B9-1
B9-1
B9-1
GND
IN
3
1

Related parts for MAX4902

MAX4902 Summary of contents

Page 1

... 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 ...

Page 2

... IN_, CMP-......................................................-0.3V to +6.0V CC COM_, NO_, NC ................................(V CC CMPO .........................................................-0. Open-Switch Continuous Current NO_, NC (MAX4902/MAX4904/MAX4905)...................................±30mA Closed-Switch Continuous Current COM_, NO_, NC.....±100mA Peak Current COM_, NO_, NC (Pulsed at 1ms, 50% duty cycle)................................±200mA Peak Current COM_, NO_, NC (Pulsed at 1ms, 10% duty cycle)................................±300mA 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 ...

Page 3

... Break-Before-Make Time Delay (MAX4903/MAX4904/MAX4905) Charge Injection Off-Isolation (Note 8) Crosstalk Power-Supply Rejection Ratio On-Channel -3dB Bandwidth Total Harmonic Distortion _______________________________________________________________________________________ CONDITIONS 10mA, NO_ 2. (MAX4902/MAX4904/ MAX4905 2.7V, switch open -2.5V, +2.5V; V NO_ COM_ = +2.5V, -2.5V (MAX4901/ MAX4903) (Notes 2.7V, switch open -2.5V, +2.5V; NC NO_ ...

Page 4

... 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: The MAX4902/MAX4904/MAX4905 have an internal shunt resistor when, in off-state, will determine off-current. Note 8: Off-Isolation = 20log 10 (V COM / COM = output input to off switch. ...

Page 5

Low-R , Dual-SPST/Single-SPDT Clickless ON Switches with Negative Rail Capability (T = +25° 3.0V, unless otherwise noted ON-RESISTANCE vs. COM VOLTAGE 1. 2. 2.3V ...

Page 6

Low-R , Dual-SPST/Single-SPDT Clickless ON Switches with Negative Rail Capability (T = +25° 3.0V, unless otherwise noted CHARGE INJECTION vs. V COM 300 C = 1nF L 200 V = 5.0V CC 100 V = 2.0V ...

Page 7

... CC Analog Switch 1, Common Terminal No Connection. Leave N.C. unconnected. Analog Switch 1, Normally Open Terminal. NO1 (MAX4902) has a shunt resistor to GND when the switch is in open position. Digital Control Input for Analog Switch 1. A logic high on IN1 connects COM1 to NO1 and a logic low opens the switch. ...

Page 8

... The comparator threshold headphones because headphone audio signals are typically biased to V The 50Ω shunt resistors on the MAX4902/MAX4904/ MAX4905 automatically discharge any capacitance at the NC or NO_ terminals when they are unconnected to COM_. This reduces audio click-and-pop sounds that occur when switching between audio sources ...

Page 9

... DC voltage is removed, thereby reducing the clicks and pops. Power-Supply Sequencing and Overvoltage Caution: Do not exceed the absolute maximum rat- ings because stresses beyond the listed ratings may cause permanent damage to the device. Proper power-supply sequencing is recommended for all CMOS devices ...

Page 10

Low-R , Dual-SPST/Single-SPDT Clickless ON Switches with Negative Rail Capability MAX4901–MAX4905 COM_ NC OR NO_ IN_ GND LOGIC INPUT C INCLUDES FIXTURE AND STRAY CAPACITANCE OUT NC NO_ ...

Page 11

Low-R , Dual-SPST/Single-SPDT Clickless ON Switches with Negative Rail Capability 10nF + IN_ CC MAX4901–MAX4905 NC1 GND 50Ω MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT IC TERMINALS. OFF-ISOLATION IS MEASURED BETWEEN COM_ AND "OFF" NO_ OR ...

Page 12

... Low-R , Dual-SPST/Single-SPDT Clickless ON Switches with Negative Rail Capability (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) 12 ______________________________________________________________________________________ Package Information PACKAGE OUTLINE, 3x3 UCSP 1 K 21-0093 1 ...

Page 13

... REF. -DRAWING NOT TO SCALE- 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 ____________________ 13 © ...

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