QuickView - MAX951, MAX952, MAX953, MAX954 Ultra-Low-Power, Single-Supply Op Amp + Comparator + Reference

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The MAX951–MAX954 feature combinations of a micropower operational amplifier, comparator, and reference in an 8-pin package. In the MAX951 and MAX952, the comparator's inverting input is connected to an internal 1.2V ±2% bandgap reference. The MAX953 and MAX954 are offered without an internal reference. The MAX951/MAX952 operate from a single 2.7V to 7V supply with a typical supply current of 7µA, while the MAX953/MAX954 operate from 2.4V to 7V with a 5µA typical supply current. Both the op amp and comparator feature a common-mode input voltage range that extends from the negative supply rail to within 1.6V of the positive rail, as well as output stages that swing rail-to-rail.

The op amps in the MAX951/MAX953 are internally compensated to be unity-gain stable, while the op amps in the MAX952/MAX954 feature 125kHz typical bandwidth, 66V/ms slew rate, and stability for gains of 10V/V or greater. These op amps have a unique output stage that enables them to operate with an ultra-low supply current while maintaining linearity under loaded conditions. In addition, they have been designed to exhibit good DC characteristics over their entire operating temperature range, minimizing input-referred errors.

The comparator output stage of these devices continuously sources as much as 40mA. The comparators eliminate power-supply glitches that commonly occur when changing logic states, minimizing parasitic feedback and making the devices easier to use. In addition, they contain ±3mV internal hysteresis to ensure clean output switching, even with slow-moving input signals.

Key Features

Applications/Uses

Op Amp + Comparator + Reference in an 8-Pin µMAX® Package (MAX951/MAX952)
7µA Typical Supply Current (Op Amp + Comparator + Reference)
Comparator and Op Amp Input Range Includes Ground
Outputs Swing Rail-to-Rail
2.4V to 7V Supply Voltage Range
Unity-Gain Stable and 125kHz Decompensated A_V > 10V/V Op Amp Options
Internal 1.2V ±2% Bandgap Reference
Internal Comparator Hysteresis
Op Amp Capable of Driving up to 1000pF Load

	Automotive Keyless Entry
	Battery-Powered Applications
	Infrared Receivers for Remote Controls
	Instruments, Terminals, and Bar-Code Readers
	Low-Frequency, Local-Area Alarms/Detectors
	Photodiode Preamps
	Smart Cards
	Smoke Detectors and Safety Sensors

Key Specifications: Integrated Amplifiers + Comparator + Reference

Part Number

Internal Ref. (1.2V ±2%)

Max. Supply Current per Comp. (µA)

Input CMVR (V)

Typ Op Amp Unity Gain BW (kHz)

Min. Stable Closed Loop Gain (V/V)

Max. Op Amp V_OS (mV)

Max. Op Amp I_BIAS (pA)

Op Amp Input Noise-Voltage Density (nV/√Hz)

Comp. Prop. Delay (µs)

Typ Comparator Output Swing @ Load (V)

Supply Voltage (min) (V)

Supply Voltage (max) (V)

Package

Operating Temp. Range (°C)

Price^**

MAX951

Yes

0 to V_CC-1.6

80 @ 1kHz

0.4 to V_CC-0.4 @ 100k

2.7

µMAX/8
CDIP(N)/8
PDIP(N)/8
SOIC(N)/8

-55 to +125
-40 to +85
0 to +70

$1.60 @ 1k

MAX952

Yes

125

2.7

$1.60 @ 1k

MAX953

2.4

$1.30 @ 1k

MAX954

125

2.4

$1.30 @ 1k

See All Integrated Amplifiers + Comparator + Reference (10)

Notes:
^**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.