Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsInterface ICsInterface IC - analogue switches uMAX 10

General Description

The MAX4762–MAX4764/MAX4764A/MAX4765 dual

SPDT (single-pole/double-throw) switches feature nega-

tive signal capability that allows signals below ground to

pass through without distortion. 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 MAX4763/MAX4765 include a comparator that can

be used for headphone detection or a mute/send key

function. The MAX4764/MAX4764A/MAX4765 have an

internal shunt switch 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 precharged points.

These SPDT switches are available in space-saving

µMAX

, TDFN, thin QFN, and UCSP

™

packages and

operate over the -40°C to +85°C extended tempera-

ture range.

Applications

Cell Phones

PDAs and Handheld Devices

Notebook Computers

MP3 Players

Features

♦ Distortion-Free Negative Signal Throughput Down

to V

- 5.5V

♦ Comparator for Headphone or Mute Detection

(MAX4763/MAX4765)

♦ Internal Shunt Resistor Reduces Click/Pop

(MAX4764/MAX4764A/MAX4765)

♦ Low On-Resistance (R

)

0.6Ω at +2.7V Supply

♦ 0.25Ω On-Resistance Flatness

♦ 0.05Ω On-Resistance Matching

♦ +1.8V to +5.5V Supply Voltage

♦ -70dB Crosstalk (100kHz)

♦ -65dB Off-Isolation (100kHz)

♦ 0.01% Total Harmonic Distortion

♦ Available in µMAX, TDFN, Thin QFN, and UCSP

Packages

MAX4762–MAX4764/MAX4764A/MAX4765

Low-Voltage, Dual SPDT, Audio Clickless

Switches with Negative Rail Capability

________________________________________________________________ Maxim Integrated Products 1

NC1NC2

IN1IN2

NO1

COM1COM2

NO2 V

GND

TOP VIEW

IN_

NO_

MAX4762–MAX4764/

MAX4764A/MAX4765

OFF

NC_

SWITCHES SHOWN FOR LOGIC "0" INPUT

OFF

UCSP

MAX4762/MAX4764

C4 B4 A4

A1B1

UCSP

MAX4763/MAX4765

C4 B4 A4

A1B1

(BUMP SIDE DOWN)

NO2 V

NO1

COM2 COM1

NC1CMP-NC2

IN2 GND IN1

CMPO

Pin Configurations/Functional Diagrams/Truth Table

Ordering Information

19-3152; Rev 2; 1/06

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.

Pin Configurations/Functional Diagrams/Truth Table continued at end of data sheet.

PART

TEMP RANGE

PIN-

PACKAGE

TOP

MARK

MAX4762ETB

-40°C to +85°C

10 TDFN

ACG

MAX4762EUB

-40°C to +85°C

10 µMAX —

MAX4762EBC-T

-40°C to +85°C

12 UCSP-12

ABU

Ordering Information continued at end of data sheet.

Selector Guide appears at end of data sheet.

µMAX is a registered trademark and UCSP is a trademark of

Maxim Integrated Products, Inc.

Summary of content (15 pages)

PAGE 1
9-3152; Rev 2; 1/06 Low-Voltage, Dual SPDT, Audio Clickless Switches with Negative Rail Capability Features The MAX4762–MAX4764/MAX4764A/MAX4765 dual SPDT (single-pole/double-throw) switches feature negative signal capability that allows signals below ground to pass through without distortion. 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. ♦ Distortion-Free Negative Signal Throughput Down to VCC - 5.
PAGE 2
MAX4762–MAX4764/MAX4764A/MAX4765 Low-Voltage, Dual SPDT, Audio Clickless Switches with Negative Rail Capability ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND.) VCC, IN_, CMP-......................................................-0.3V to +6.0V COM_, NO_, NC_ ...............................(VCC - 6V) to (VCC + 0.3V) CMPO .........................................................-0.3V to (VCC + 0.3V) Closed-Switch Continuous Current COM_, NO_, NC_......
PAGE 3
Low-Voltage, Dual SPDT, Audio Clickless Switches with Negative Rail Capability (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, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX 25 80 UNITS DYNAMIC CHARACTERISTICS Turn-On Time tON Turn-Off Time tOFF VCC = 2.7V, VNO = 1.5V; for NO_, VIN_ = 0V to VCC; for NC_, VIN_ = VCC to 0V; RL = 300Ω, CL = 35pF, Figure 2 VCC = 2.7V, VNC = 1.
PAGE 4
MAX4762–MAX4764/MAX4764A/MAX4765 Low-Voltage, Dual SPDT, Audio Clickless Switches with Negative Rail Capability 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, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS Comparator Output High Voltage ISOURCE = 1mA Comparator Output Low Voltage ISINK = 1mA Comparator Input Leakage Current VCMP- = 0 to 2.7V Comparator Switching Time VCC = 2.
PAGE 5
Low-Voltage, Dual SPDT, Audio Clickless Switches with Negative Rail Capability ON-RESISTANCE vs. COM VOLTAGE VCC = 2.0V 3 VCC = 2.3V 2 V+ = 2.5V V+ = 3.0V V+ = 5.0V 1 1.0 TA = +25°C 0.4 0.2 -3 -2 -1 0 1 2 3 5 4 TA = +85°C 0.8 TA = +25°C 0.6 TA = -40°C 0.4 0.2 0 -4 0 -1 0 1 2 3 5 4 -3 -2 -1 0 1 COM VOLTAGE (V) COM VOLTAGE (V) MAX4762/MAX4764/MAX4764A SUPPLY CURRENT vs. SUPPLY VOLTAGE MAX4763/MAX4765 SUPPLY CURRENT vs.
PAGE 6
Typical Operating Characteristics (continued) (VCC = 3.0V, TA = +25°C, unless otherwise noted.) ICOM(OFF) 10 1 VCC = 3.0V -20 -6 -9 -15 10 35 -15 -100 CROSSTALK -120 0.001 TEMPERATURE (°C) 0.01 0.1 1 10 0.001 100 0.01 100 0.1 VCC = 1VRMS DC BIAS = 3V CL = 5pF RL = 50Ω 80 PSRR (dB) VCC = 3.0V RL = 32Ω 1 10 POWER-SUPPLY REJECTION RATIO vs. FREQUENCY MAX4762 toc13 1 0.1 FREQUENCY (MHz) FREQUENCY (MHz) TOTAL HARMONIC DISTORTION vs.
PAGE 7
Low-Voltage, Dual SPDT, Audio Clickless Switches with Negative Rail Capability PIN NAME FUNCTION 10-µMAX 10-TDFN 12-UCSP 1 B1 2 A1 NO1 3 A2 COM1 4 A3 NC1 Analog Switch 1—Normally Closed Terminal 5 A4 IN1 Digital Control Input for Analog Switch 1. A logic LOW on IN1 connects COM1 to NC1 and a logic HIGH connects COM1 to NO1. 6 B4 GND 7 C4 IN2 Digital Control Input for Analog Switch 2. A logic LOW on IN2 connects COM2 to NC2 and a logic HIGH connects COM2 to NO2.
PAGE 8
MAX4762–MAX4764/MAX4764A/MAX4765 Low-Voltage, Dual SPDT, Audio Clickless Switches with Negative Rail Capability Analog Signal Levels OUT+ NC1 AUDIO SOURCE 1 MAX4765 OUT- COM1 NO1 IN1 INPUT SELECT 8Ω SPEAKER SHUNT SWITCH COM2 OUT+ AUDIO SOURCE 2 OUT- Comparator (MAX4763/MAX4765) IN2 NC2 V+ NO2 V+ 3 MUTE CMPO CMPMUTE BUTTON Figure 1.
PAGE 9
Low-Voltage, Dual SPDT, Audio Clickless Switches with Negative Rail Capability MAX4762–MAX4764 MAX4764A/MAX4765 VN_ VCC LOGIC INPUT V CC COM_ NO_ 50% 0V VOUT OR NC_ 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 VCC IN DEPENDS ON SWITCH CONFIGURATION; INPUT POLARITY DETERMINED BY SENSE OF SWITCH. ) Figure 2.
PAGE 10
MAX4762–MAX4764/MAX4764A/MAX4765 Low-Voltage, Dual SPDT, Audio Clickless Switches with Negative Rail Capability Test Circuits/Timing Diagrams (continued) +5V 10nF OFF-ISOLATION = 20log NETWORK ANALYZER VCC 0V OR VCC 50Ω VIN COM1 IN_ REF GND 50Ω V CROSSTALK = 20log OUT VIN MEAS VOUT NO1* NC1 V ON-LOSS = 20log OUT VIN 50Ω MAX4762–MAX4764 MAX4764A/MAX4765 VOUT VIN 50Ω 50Ω *FOR CROSSTALK THIS PIN IS NO2. NC2 AND COM2 ARE OPEN. MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT IC TERMINALS.
PAGE 11
Low-Voltage, Dual SPDT, Audio Clickless Switches with Negative Rail Capability TOP VIEW MAX4762/MAX4764/MAX4764A VCC 1 10 NO2 NO1 2 9 COM2 COM1 3 8 NC2 NC1 4 7 IN2 IN1 5 6 GND MAX4763/MAX4765 NO1 VCC CMPO 12 11 10 COM1 1 9 NO2 NC1 2 8 COM2 7 NC2 IN1 3 V+ 3 5 4 CMP- µMAX/TDFN COMPARATOR SHUNT 6 IN2 THIN QFN Selector Guide PART GND Ordering Information (continued) PACKAGE SIZE (mm) PART TEMP RANGE PINPACKAGE TOP MARK MAX4762EBC-T No No 1.5 x 2.
PAGE 12
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.) 12L, UCSP 4x3.
PAGE 13
Low-Voltage, Dual SPDT, Audio Clickless Switches with Negative Rail Capability 6, 8, &10L, DFN THIN.EPS D2 D A2 PIN 1 ID N 0.35x0.35 b PIN 1 INDEX AREA E [(N/2)-1] x e REF. E2 DETAIL A e k A1 CL A CL L L e e PACKAGE OUTLINE, 6,8,10 & 14L, TDFN, EXPOSED PAD, 3x3x0.80 mm -DRAWING NOT TO SCALE- 21-0137 G 1 2 COMMON DIMENSIONS MIN. MAX. D 0.70 2.90 0.80 3.10 E A1 2.90 0.00 3.10 0.05 L k 0.20 0.40 0.25 MIN. A2 0.20 REF. SYMBOL A PACKAGE VARIATIONS PKG.
PAGE 14
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.) 24L QFN THIN.EPS MAX4762–MAX4764/MAX4764A/MAX4765 Low-Voltage, Dual SPDT, Audio Clickless Switches with Negative Rail Capability PACKAGE OUTLINE, 12, 16, 20, 24, 28L THIN QFN, 4x4x0.8mm 21-0139 E 1 2 PACKAGE OUTLINE, 12, 16, 20, 24, 28L THIN QFN, 4x4x0.
PAGE 15
Low-Voltage, Dual SPDT, Audio Clickless Switches with Negative Rail Capability 10LUMAX.EPS e 4X S 10 10 INCHES H Ø0.50±0.1 0.6±0.1 1 1 0.6±0.1 BOTTOM VIEW TOP VIEW D2 MILLIMETERS MAX DIM MIN 0.043 A 0.006 A1 0.002 A2 0.030 0.037 0.120 D1 0.116 0.118 D2 0.114 0.120 E1 0.116 0.118 E2 0.114 0.199 H 0.187 L 0.0157 0.0275 L1 0.037 REF 0.0106 b 0.007 e 0.0197 BSC c 0.0035 0.0078 0.0196 REF S α 0° 6° MAX MIN 1.10 0.15 0.05 0.75 0.95 3.05 2.95 2.89 3.00 3.05 2.95 2.89 3.00 4.75 5.05 0.40 0.70 0.