MAX301CSE digital integrated circuits Integrated Circuit Chip Precision, Dual, High-Speed Analog Switches

Precision, Dual, High-Speed Analog Switches

General Description

The MAX301/MAX303/MAX305 are precision, dual, highspeed analog switches. The single-pole single-throw (SPST) MAX301 and double-pole single-throw (DPST) MAX305 dualswitches are normally open (NO). The single-pole double-throw (SPDT) MAX303 has two NO and two normally closed (NC) poles. All three parts offer low on resistance (less than 35Ω), guaranteed to match to within 2Ω between channels and to remain flat over the full analog signal range (Δ3max). They also offer low leakage (less than 250pA at +25°C and less than 6nA at +85°C) and fast switching (turn-on time less than 150ns and turn-off time less than 100ns).

The MAX301/MAX303/MAX305 are fabricated with Maxim’s new improved silicon-gate process for high system accuracy. Design improvements guarantee extremely low charge injection (15pC) and low power consumption (35µW). A 44V maximum breakdown voltage allows rail-to-rail analog signal capability.

These monolithic switches operate with a single positive supply (+10V to +30V) or with split supplies (±4.5V to ±20V) while retaining CMOS-logic input compatibility and fast switching. CMOS inputs provide reduced input loading.

Applications

Sample-and-Hold Circuits Military Radios

Test Equipment Communication Systems

Heads-Up Displays Battery-Operated Systems

Guidance and Control PBX, PABX

Systems

Features

♦ Low On-Resistance < 22Ω Typical (35Ω Max)

♦ Guaranteed Matched On-Resistance Between Channels < 2Ω

♦ Guaranteed Flat On-Resistance over Full Analog Signal Range Δ3Ω Max

♦ Guaranteed Charge Injection < 15pC

♦ Guaranteed Off-Channel Leakage < 6nA at +85°C

♦ Single-Supply Operation (+10V to +30V) Bipolar-Supply Operation (±4.5V to ±20V)

♦ TTL-/CMOS-Logic Compatible

♦ Rail-to-Rail Analog Signal Handling Capability

ABSOLUTE MAXIMUM RATINGS

Voltage Referenced to V-

V+.......................................................................................44V

GND ...................................................................................25V

V_L .................................................................(GND-0.3V) to (V+) +0.3V

NO_, NC_, IN_, COM_ ................(V- - 2V) to (V+ + 2V) or 30mA, ..................................................................whichever occurs first

Continuous Current, COM_, NO_, NC_...............................30mA

Peak Current, COM_, NO_, NC_

(pulsed at 1ms, 10% duty cycle max) ..........................100mA

Continuous Power Dissipation (TA = +70°C) (Note 2)

16-Pin Plastic DIP (derate 10.53mW/°C above +70°C) .....842mW

16-Pin Narrow SO (derate 8.70mW/°C above +70°C) .......696mW

16-Pin CERDIP (derate 10.00mW/°C above +70°C)..........800mW

20-Pin LCC (derate 9.09mW/°C above +70°C)..................727mW

Operating Temperature Ranges:

MAX30_C_ _ .......................................................0°C to +70°C

MAX30_E_ _.....................................................-40°C to +85°C

MAX30_M_ _..................................................-55°C to +125°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

Note 1: Signals on NO_, NC_, or COM_ beyond V+ or V- are clamped by internal diodes. Limit forward current to maximum current rating.

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. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

Pin Configurations/Block Diagrams/Truth Tables

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