MAX931, MAX932, MAX933, MAX934 超低功耗、低成本比较器、内置2%电压基准

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概述

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The MAX931–MAX934 single, dual, and quad micropower, low-voltage comparators plus an on-board 2% accurate reference feature the lowest power consumption available. These comparators draw less than 4µA supply current over temperature (MAX931), and include an internal 1.182V ±2% voltage reference, programmable hysteresis, and TTL/CMOS outputs that sink and source current.

Ideal for 3V or 5V single-supply applications, the MAX931–MAX934 operate from a single +2.5V to +11V supply (or a ±1.25V to ±5V dual supply), and each comparator's input voltage range extends from the negative supply rail to within 1.3V of the positive supply.

The MAX931–MAX934's unique output stage continuously sources as much as 40mA. And by eliminating power-supply glitches that commonly occur when comparators change logic states, the MAX931–MAX934 minimize parasitic feedback, making them easier to use.

The single MAX931 and dual MAX932/MAX933 provide a unique and simple method for adding hysteresis without feedback and complicated equations, using the HYST pin and two resistors.

For applications that require increased precision with similar power requirements, see the MAX921–MAX924 data sheet. These devices include a 1% precision reference.

关键特性

应用/使用

Ultra-Low 4µA Max Quiescent Current over Extended Temp. Range (MAX931)
Power Supplies:
- Single +2.5V to +11V
- Dual ±1.25V to ±5.5V
Input Voltage Range Includes Negative Supply
Internal 1.182V ±2% Bandgap Reference
Adjustable Hysteresis
TTL-/CMOS-Compatible Outputs
12µs Propagation Delay (10mV Overdrive)
No Switching Crowbar Current
40mA Continuous Source Current
Available in Space-Saving µMAX® Package

	报警电路
	电池供电应用
	振荡器电路
	门限检测器
	窗比较器

Key Specifications: Comparators + Reference

Part Number

Comps. per Pkg.

Threshold (V)

Number of Inputs / Thresholds (V)

Threshold Accuracy (%)

Internal Reference Accuracy (%)

Typ Prop. Delay (µs)

Supply Voltage (min) (V)

Supply Voltage (max) (V)

Max. Total Supply Current (µA)

Comp. Inputs Available

Prog. Hyst.

V_OS (max) (mV)

Logic Output

Package

Smallest Available Package (max w/pins) (mm²)

Operating Temp. Range (°C)

Price^**

MAX931

1.182

1 / 1.182

2.85

2.5

3.2

Both

Yes

TTL/CMOS

PDIP/8
SOIC/8
uMAX/8

-40 to +85
0 to +70

$0.98 @ 1k

MAX932

2 / 1.182

4.5

Noninv.

Yes

PDIP/8
SOIC/8
uMAX/8

$1.26 @ 1k

MAX933

2 / 1.182

4.5

1 Inv. + 1 Noninv.

Yes

PDIP/8
SOIC/8
uMAX/8

$1.26 @ 1k

MAX934

4 / 1.182

6.6

Both

PDIP/16
SOIC/16

$1.31 @ 1k

See All Comparators + Reference (38)

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.