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________________General Description

The MAX4528 low-voltage, CMOS analog IC is config-

ured as a phase-reversal switch and optimized for high-

speed applications such as chopper amplifiers. It

operates from a +2.7V to +12V single supply or from

±2.7V to ±6V dual supplies.

On-resistance (110Ω max) is matched between switch-

es to 7Ω (max). Each switch can handle Rail-to-Rail

analog signals. The leakage current is only 0.5nA at

+25°C and 20nA at +85°C. All digital inputs have 0.8V

to 2.4V logic thresholds, ensuring both TTL- and

CMOS-logic compatibility.

For higher voltage operation, see the MAX4526/

MAX4527 data sheet.

________________________Applications

Chopper-Stabilized Amplifiers

Balanced Modulators/Demodulators

Data Acquisition

Test Equipment

Audio-Signal Routing

____________________________Features

♦ 5pC (max) Charge Injection

♦ 110Ω Signal Paths with ±5V Supplies

♦ Rail-to-Rail Signal Handling

♦ Transition Time <100ns with ±5V Supplies

♦ 1.0µA (max) Current Consumption

♦ >2kV ESD Protection per Method 3015.7

♦ TTL/CMOS-Compatible Input

♦ Small Packages: 8-Pin SO, DIP, and µMAX

MAX4528

Low-Voltage, Phase-Reversal

Analog Switch

________________________________________________________________

Maxim Integrated Products

_________________________Pin Configuration/Functional Diagram/Truth Table

SWITCH POSITIONS SHOWN WITH IN = LOW

V-

V+

GND

MAX4528

DIP/SO/µMAX

TOP VIEW

TRUTH TABLE

19-1325; Rev 0; 1/98

PART

MAX4528CPA

MAX4528CSA

MAX4528CUA 0°C to +70°C

0°C to +70°C

TEMP. RANGE PIN-PACKAGE

8 Plastic DIP

8 SO

8 µMAX

_______________Ordering Information

Contact factory for availability.

MAX4528C/D

MAX4528EPA

MAX4528ESA -40°C to +85°C

-40°C to +85°C

0°C to +70°C Dice*

8 Plastic DIP

8 SO

MAX4528EUA -40°C to +85°C 8 µMAX

Rail-to-Rail is a registered trademark of Nippon Motorola Ltd.

Summary of content (12 pages)

PAGE 1
9-1325; Rev 0; 1/98 Low-Voltage, Phase-Reversal Analog Switch ____________________________Features ♦ 5pC (max) Charge Injection ________________________Applications _______________Ordering Information Chopper-Stabilized Amplifiers ♦ 110Ω Signal Paths with ±5V Supplies ♦ Rail-to-Rail Signal Handling ♦ Transition Time <100ns with ±5V Supplies ♦ 1.0µA (max) Current Consumption ♦ >2kV ESD Protection per Method 3015.7 ♦ TTL/CMOS-Compatible Input ♦ Small Packages: 8-Pin SO, DIP, and µMAX PART TEMP.
PAGE 2
MAX4528 Low-Voltage, Phase-Reversal Analog Switch ABSOLUTE MAXIMUM RATINGS (Voltages Referenced to GND) V+ .............................................................................-0.3V to 13V V-...............................................................................-13V to 0.3V V+ to V- .....................................................................-0.3V to 13V All Other Pins (Note 1) ..........................(V- - 0.3V) to (V+ + 0.3V) Continuous Current into Any Terminal................
PAGE 3
Low-Voltage, Phase-Reversal Analog Switch MAX4528 ELECTRICAL CHARACTERISTICS: ±5V Dual Supplies (continued) (V+ = 5V, V- = -5V, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER SYMBOL CONDITIONS TA MIN TYP (Note 3) MAX UNITS POWER SUPPLY Power-Supply Range V+, V- C, E V+ Supply Current I+ VIN = 0V or V+ V- Supply Current I- VIN = 0V or V+ ±2.
PAGE 4
MAX4528 Low-Voltage, Phase-Reversal Analog Switch ELECTRICAL CHARACTERISTICS: +3V Single Supply (V+ = 2.7V to 3.6V, V- = 0V, V INH = 2.4V, V INL = 0.6V, T A = T MIN to T MAX, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER SYMBOL CONDITIONS TA MIN TYP (Note 3) MAX UNITS ANALOG SWITCH Analog-Signal Range VA, VB, VX, VY (Note 4) C, E RON V+ = 3V, VA = VB = 1.5V, IA = IB = 0.
PAGE 5
Low-Voltage, Phase-Reversal Analog Switch ON-RESISTANCE vs. VA, VB, AND TEMPERATURE (DUAL SUPPLIES) TA = +125°C TA = +85°C V+ = 5V V- = -5V TA = +70°C V+ = 2.7V 80 60 V+ = 3.3V V+ = 5V 100 V+ = 7.5V TA = -55°C TA = -40°C 40 V- = 0V V+ = 2V RON (Ω) RON (Ω) RON (Ω) 100 V+ = 3.3V V- = -3.3V 120 100 V+ = 2V V- = -2V 1000 MAX4528-02 V+ = 1.2V V- = -1.2V V+ = 2.7V V- = -2.7V 140 MAX4528-01 1000 ON-RESISTANCE vs. VA, VB (SINGLE SUPPLY) MAX4528-03 ON-RESISTANCE vs.
PAGE 6
_________________________________Typical Operating Characteristics (continued) (V+ = 5V, V- = -5V, GND = 0V, TA = +25°C, unless otherwise noted.) SUPPLY CURRENT AND GROUND CURRENT vs. INPUT VOLTAGE +2.7V SINGLE SUPPLY 200 V- = 0V 10-1 FREQUENCY RESPONSE -10 -20 10-2 +5V SINGLE SUPPLY 100 10-4 LOSS (dB) I+, IGND (A) 150 10-5 10-6 50 ±5V DUAL SUPPLIES -55 -25 5 35 65 TEMPERATURE (°C) 95 -120 0 1 2 3 4 5 6 7 VIN (V) ON PHASE V+ = 5V V- = -5V 50Ω IN AND OUT 0.
PAGE 7
Low-Voltage, Phase-Reversal Analog Switch PIN NAME FUNCTION 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) 5 V- Negative Analog Supply-Voltage Input.
PAGE 8
MAX4528 Low-Voltage, Phase-Reversal Analog Switch Bipolar Supplies The MAX4528 operates with bipolar supplies between ±2.7V and ±6.0V. The V+ and V- supplies need not be symmetrical, but their sum cannot exceed the 13V absolute maximum rating (see Absolute Maximum Ratings). Single Supply The MAX4528 operates from a single +2.7V to +12V supply when V- is connected to GND. Observe all of the bipolar precautions when operating from a single supply.
PAGE 9
Low-Voltage, Phase-Reversal Analog Switch MAX4528 TIME WAVEFORMS LOGIC (CARRIER) OUTPUT SPECTRUM A LOWER SIDEBAND MODULATOR/DEMODULATOR CIRCUIT UPPER SIDEBAND SUPPRESSED CARRIER V+ B V+ NPUT A X B Y IN OUTPUT X AMPLITUDE GND V- LOGIC (CARRIER) MAX4528 V- Y FREQUENCY X-Y (OUTPUT) Figure 2.
PAGE 10
MAX4528 Low-Voltage, Phase-Reversal Analog Switch _________________________________Test Circuits/Timing Diagrams (continued) V+ VIN VIN V+ IN 50Ω t F < 5ns t R < 5ns V+ A B MAX4528 VOUT X OR Y GND 50% 0V +3V 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+ B OR A V+ N.C.
PAGE 11
Low-Voltage, Phase-Reversal Analog Switch V+ V+ A B MAX4528 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 V+ VOUT SWITCH SELECT X, Y V- GND MEAS. 50Ω VOUT VIN ON LOSS = 20log VOUT VIN 50Ω MAX4528 IN OFF ISOLATION = 20log REF 50Ω 10nF V- MEASUREMENTS ARE STANDARDIZED AGAINST SHORT AT SOCKET TERMINALS. OFF ISOLATION IS MEASURED BETWEEN A, B AND "OFF" X, Y TERMINAL.
PAGE 12
____________________________________________________________Chip Topography TRANSISTOR COUNT: 141 SUBSTRATE IS INTERNALLY CONNECTED TO V+ A V+ X 0.054" (1.37mm) B Y GND N V- 0.038 (0.97mm) ________________________________________________________Package Information 8LUMAXD.EPS MAX4528 Low-Voltage, Phase-Reversal Analog Switch Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied.