Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsInterface ICsInterface IC - analogue switches uMAX 8

_______________General Description

The MAX4526/MAX4527 are CMOS analog ICs config-

ured as phase-reversal switches. The MAX4526 is

optimized for high-speed applications, such as chop-

per amplifiers, while the MAX4527 is optimized for

low-power applications.

The MAX4526/MAX4527 operate from a +4.5V to +36V

single supply or ±4.5V to ±18V dual supplies. On-resis-

tance (175Ω max) is matched between switches to 8Ω

maximum. Each switch can handle rail-to-rail analog

signals. Maximum leakage current is only 0.5nA at

+25°C and 10nA at +85°C.

All digital inputs have 0.8V to 2.4V logic thresholds,

ensuring TTL/CMOS-logic compatibility.

________________________Applications

Chopper-Stabilized Amplifiers

Balanced Modulators/Demodulators

Data Acquisition

Test Equipment

Audio-Signal Routing

____________________________Features

♦ 10pC (max) Charge Injection

♦ 2pC (max) Charge-Injection Match

♦ 175Ω Signal Paths with ±15V Supplies

♦ Guaranteed Break-Before-Make

♦ Rail-to-Rail Signal Handling

♦ Transition Time < 100ns with ±15V Supplies

♦ 1µA Current Consumption (MAX4527)

♦ >2kV ESD Protection per Method 3015.7

♦ TTL/CMOS-Compatible Inputs

♦ Available in Small, 8-Pin µMAX Package

MAX4526/MAX4527

Phase-Reversal Analog Switches

________________________________________________________________

Maxim Integrated Products

_________________________Pin Configuration/Functional Diagram/Truth Table

SWITCH POSITIONS SHOWN WITH IN = LOW

V-

V+

GND

MAX4526

MAX4527

DIP/SO/µMAX

TOP VIEW

TRUTH TABLE

IN

O

1



A

Y

X



B

X

Y



19-1165; Rev 0; 12/96

PART

MAX4526CPA

MAX4526CSA

MAX4526CUA 0°C to +70°C

0°C to +70°C

TEMP. RANGE PIN-PACKAGE

8 Plastic DIP

8 SO

8 µMAX

______________Ordering Information

Ordering Information continued at end of data sheet.

*Contact factory for availability.

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800

MAX4526C/D 0°C to +70°C Dice*

MAX4526EPA -40°C to +85°C 8 Plastic DIP

MAX4526ESA -40°C to +85°C 8 SO

MAX4526EUA -40°C to +85°C 8 µMAX

Summary of content (12 pages)

PAGE 1
9-1165; Rev 0; 12/96 Phase-Reversal Analog Switches The MAX4526/MAX4527 are CMOS analog ICs configured as phase-reversal switches. The MAX4526 is optimized for high-speed applications, such as chopper amplifiers, while the MAX4527 is optimized for low-power applications. The MAX4526/MAX4527 operate from a +4.5V to +36V single supply or ±4.5V to ±18V dual supplies. On-resistance (175Ω max) is matched between switches to 8Ω maximum. Each switch can handle rail-to-rail analog signals.
PAGE 2
MAX4526/MAX4527 Phase-Reversal Analog Switches ABSOLUTE MAXIMUM RATINGS (Voltages Referenced to GND) V+ ...........................................................................-0.3V to +44V V- ............................................................................-25V to +0.3V V+ to V-...................................................................-0.3V to +44V All Other Pins (Note 1) ..........................(V- - 0.3V) to (V+ + 0.3V) Continuous Current into Any Terminal.......................
PAGE 3
Phase-Reversal Analog Switches MAX4526/MAX4527 ELECTRICAL CHARACTERISTICS—±15V Supplies (continued) (V+ = +15V, V- = -15V, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.
PAGE 4
__________________________________________Typical Operating Characteristics (V+ = +15V, V- = -15V, GND = 0V, TA = +25°C, unless otherwise noted.) ON-RESISTANCE vs. VA, VB, AND TEMPERATURE (DUAL SUPPLIES) V± = ±10V 150 TA = +70°C 100 80 60 100 V± = ±15V -8 -4 0 4 VA, VB (V) 8 12 -15 16 TA = +70°C 250 150 100 15 0 TA = +25°C V+ = 15V V- = 0V TA = -55°C V+ = 15V V- = -15V 10 30 20 QYO QXO 0 0.
PAGE 5
Phase-Reversal Analog Switches (V+ = +15V, V- = -15V, GND = 0V, TA = +25°C, unless otherwise noted.) MAX4526 POSITIVE SUPPLY CURRENT vs. VIN 1.75 900 800 I+ (MAX4526) I- (MAX4526) 0.75 600 500 400 V+ = 5V V- = -5V 300 0.50 I+ (MAX4527) 0.25 1 V+ = 5V V- = -5V 0.1 200 I- (MAX4527) V+ = 15V V- = -15V 10 I+ (µA) 0.01 100 0 0 -55 -35 -15 5 25 45 65 0.001 0 85 105 125 2 4 6 8 10 12 14 0 2 4 6 VIN (V) TEMPERATURE (°C) -10 ON - LOSS 12 14 16 TOTAL HARMONIC DISTORTION vs.
PAGE 6
MAX4526/MAX4527 Phase-Reversal Analog Switches __________________Pin Configuration PIN NAME 1 A Analog-Switch Input Terminal A. Connected to Y when IN is low; connected to X when IN is high. 2 B Analog-Switch Input Terminal B. Connected to X when IN is low; connected to Y when IN is high. 3 GND Ground. Connect GND to digital ground. (Analog signals have no ground reference; they are limited to V+ and V-.) 4 IN Logic-Level Control Inputs (see Truth Table).
PAGE 7
Phase-Reversal Analog Switches Overview The MAX4526/MAX4527 construction is typical of most CMOS analog switches. It has three supply pins: V+, V-, and GND. V+ and V- drive the internal CMOS switches and set the analog-voltage limits on any switch. Reverse ESD-protection diodes are internally connected between each analog signal pin, and both V+ and V-. One of these diodes conducts if any analog signal exceeds V+ or V-. Virtually all of the analog leakage current is through the ESD diodes to V+ or V-.
PAGE 8
MAX4526/MAX4527 Phase-Reversal Analog Switches Single Supply The MAX4526/MAX4527 operate from a single supply between +4.5V and +36V when V- is connected to GND. Observe all of the bipolar precautions when operating from a single supply. __________Applications Information The MAX4526/MAX4527 are designed for DC and low-frequency-signal phase-reversal applications. Both DC and AC symmetry are optimized for use with ±15V supplies.
PAGE 9
Phase-Reversal Analog Switches V+ VIN VIN V+ IN 50Ω t F < 5ns t R < 5ns V+ A 50% 0V +10V B MAX4526 MAX4527 VOUT X OR Y GND V- 90% VOUT 300Ω 35pF V- 0V tBBM V- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION. Figure 4. Break-Before-Make Interval V+ V+ V+ VIN IN 50Ω B OR A N.C. A OR B VA OR VB VIN 0V MAX4526 MAX4527 X OR Y GND V- VOUT CL 1000pF VOUT ∆VOUT V∆VOUT IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER ERROR Q WHEN THE CHANNEL TURNS OFF.
PAGE 10
MAX4526/MAX4527 Phase-Reversal Analog Switches _________________________________Test Circuits/Timing Diagrams (continued) V+ V+ A B MAX4526 MAX4527 V+ X SWITCH SELECT 1MHz CAPACITANCE ANALYZER Y IN GND VV- Figure 6. A, B, X, Y Capacitance V+ 10nF V+ A,B NETWORK ANALYZER VIN 50Ω MAX4526 MAX4527 V+ SWITCH SELECT IN VOUT OFF ISOLATION = 20 log VOUT VIN ON LOSS = 20 log VOUT VIN 50Ω MEAS.
PAGE 11
Phase-Reversal Analog Switches PART MAX4527CPA MAX4527CSA MAX4527CUA MAX4527C/D MAX4527EPA MAX4527ESA MAX4527EUA TEMP. RANGE 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C -40°C to +85°C -40°C to +85°C -40°C to +85°C ___________________Chip Topography PIN-PACKAGE 8 Plastic DIP 8 SO 8 µMAX Dice* 8 Plastic DIP 8 SO 8 µMAX V+ A X B Y 0.077" (1.96mm) *Contact factory for availability. GND IN V- 0.058" (1.
PAGE 12
MAX4526/MAX4527 Phase-Reversal Analog Switches _________________________________________________Package Information (continued) DIM A A1 B C E e H L D 0°-8° A 0.101mm 0.004in. e B A1 C E L Narrow SO SMALL-OUTLINE PACKAGE (0.150 in.) H D DIM PINS D D D E DIM E1 A A1 A2 A3 B B1 C D1 E E1 e eA eB L A3 0° - 15° C e B1 B eA eB D1 Plastic DIP PLASTIC DUAL-IN-LINE PACKAGE (0.300 in.) 8 14 16 MILLIMETERS MIN MAX 1.35 1.75 0.10 0.25 0.35 0.49 0.19 0.25 3.80 4.00 1.27 5.80 6.20 0.40 1.