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超低功耗、单电源运算放大器 + 比较器 + 电压基准

产品详情

主要特征

Parametric specs for Integrated Amplifiers + Comparator + Reference
Internal Reference (1.2V ±2%) No
ICC per Comp. (µA) (max) 8
VCMVR (V) 0 to VCC-1.6
Op. Amp. GBW (kHz) (typ) 20
AVCL (min) 1
Op. Amp. VOS (mV) (max) 3
Op. Amp. IBIAS (pA) (max) 50
Op. Amp. VNOISE (nV/√Hz) 80 @ 1kHz
Comparator tPD (µs) 4
Comparator VOUT @Load (V) (typ) 0.4 to VCC-0.4 @ 100k
VSUPPLY (V) (min) 2.4
VSUPPLY (V) (max) 7
Oper. Temp. (°C) -55 to +125
-40 to +85
0 to +70
Package/Pins SOIC (N)/8
UMAX/8
Budgetary
Price (See Notes)
3.2
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参量

Parametric specs for Integrated Amplifiers + Comparator + Reference
Internal Reference (1.2V ±2%) No
ICC per Comp. (µA) (max) 8
VCMVR (V) 0 to VCC-1.6
Op. Amp. GBW (kHz) (typ) 20
AVCL (min) 1
Op. Amp. VOS (mV) (max) 3
Op. Amp. IBIAS (pA) (max) 50
Op. Amp. VNOISE (nV/√Hz) 80 @ 1kHz
Comparator tPD (µs) 4
Comparator VOUT @Load (V) (typ) 0.4 to VCC-0.4 @ 100k
VSUPPLY (V) (min) 2.4
VSUPPLY (V) (max) 7
Oper. Temp. (°C) -55 to +125
-40 to +85
0 to +70
Package/Pins SOIC (N)/8
UMAX/8
Budgetary
Price (See Notes)
3.2

主要特征

  • 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 AV > 10V/V Op Amp Options
  • Internal 1.2V ±2% Bandgap Reference
  • Internal Comparator Hysteresis
  • Op Amp Capable of Driving up to 1000pF Load

应用/用途

  • 电池供电应用
  • 红外接收器,用于远端控制
  • 仪表、终端与条码读卡器
  • 低频、本地报警/检测器
  • 光电二极管前置放大器
  • 智能卡
  • 烟雾检测和安全传感器

描述

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.

简化框图

MAX951、MAX952、MAX953、MAX954:典型工作电路 MAX951、MAX952、MAX953、MAX954:典型工作电路 Zoom icon

Technical Docs

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