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低功耗、8通道、串行10位ADC

对于3V应用,请参考MAX1248MAX148

产品详情

主要特征

Parametric specs for Precision ADCs (< 5Msps)
Resolution (bits) (ADC) 10
# Input Channels 8
Conv. Rate (ksps) (max) 133
Data Bus SPI
ADC Architecture SAR
Diff/S.E. Input Both
Internal VREF (V) (nominal) 4.096
External VREF (V) (min) 2.5
External VREF (V) (max) 5
Unipolar VIN (V) (max) 4.096
Bipolar VIN (±V) (max) 2.048
INL (±LSB) 0.5
Package/Pins PDIP/20
SOIC (W)/20
SSOP/20
Budgetary
Price (See Notes)
4.81
缩小

简化框图

Technical Docs

数据资料 低功耗、8通道、串行10位ADC Apr 01, 1997

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参量

Parametric specs for Precision ADCs (<u><</u> 5Msps)
Resolution (bits) (ADC) 10
# Input Channels 8
Conv. Rate (ksps) (max) 133
Data Bus SPI
ADC Architecture SAR
Diff/S.E. Input Both
Internal VREF (V) (nominal) 4.096
External VREF (V) (min) 2.5
External VREF (V) (max) 5
Unipolar VIN (V) (max) 4.096
Bipolar VIN (±V) (max) 2.048
INL (±LSB) 0.5
Package/Pins PDIP/20
SOIC (W)/20
SSOP/20
Budgetary
Price (See Notes)
4.81

主要特征

  • 8-Channel Single-Ended or 4-Channel Differential Inputs
  • Single +5V Operation
  • Low Power:
    • 1.5mA (operating)
    • 2µA (power-down)
  • Internal Track/Hold, 133kHz Sampling Rate
  • Internal 4.096V Reference
  • 4-Wire Serial Interface is Compatible with SPI, QSPI, MICROWIRE, and TMS320
  • 20-Pin DIP, SO, SSOP Packages
  • Pin-Compatible 12-Bit Upgrade (MAX186/MAX188)

应用/用途

  • 汽车电子
  • 电池管理
  • 电池供电应用
  • 消费类电子
  • 医疗仪器
  • 笔输入系统
  • 便携式数据记录
  • 机器人技术

描述

The MAX192 is a low-cost, 10-bit data-acquisition system that combines an 8-channel multiplexer, high-bandwidth track/hold, and serial interface with high conversion speed and ultra-low power consumption. The device operates with a single +5V supply. The analog inputs are software configurable for single-ended and differential (unipolar/bipolar) operation.

The 4-wire serial interface connects directly to SPI™, QSPI™, and MICROWIRE™ devices, without using external logic. A serial strobe output allows direct connection to TMS320 family digital signal processors. The MAX192 uses either the internal clock or an external serial-interface clock to perform successive approximation A/D conversions. The serial interface can operate beyond 4MHz when the internal clock is used. The MAX192 has an internal 4.096V reference with a drift of ±30ppm typical. A reference-buffer amplifier simplifies gain trim and two sub-LSBs reduce quantization errors.

The MAX192 provides a hardwired active-low SHDN pin and two software-selectable power-down modes. Accessing the serial interface automatically powers up the device, and the quick turn-on time allows the MAX192 to be shut down between conversions. By powering down between conversions, supply current can be cut to under 10µA at reduced sampling rates.

The MAX192 is available in 20-pin DIP and SO packages, and in a shrink-small-outline package (SSOP) that occupies 30% less area than an 8-pin DIP. The data format provides hardware and software compatibility with the MAX186/MAX188. For anti-aliasing filters, consult the data sheets for the MAX291-MAX297.

简化框图

MAX192:典型工作电路 MAX192:典型工作电路 Zoom icon

Technical Docs

数据资料 低功耗、8通道、串行10位ADC Apr 01, 1997

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心