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12位A/D转换器,带有三态二进制输出

产品详情

主要特征

应用/用途

Parametric specs for Display-Oriented ADCs
Resolution (±Counts) 4096
# Input Channels 1
Conv. Rate (ksps) (max) 0.03
Data Bus µP/12
UART
Diff/S.E. Input Diff. Only
Internal VREF (V) (nominal) -2.8
External VREF (V) (min) -5
External VREF (V) (max) 5
Bipolar VIN (±V) (max) 3.5
Package/Pins PDIP/40
PLCC/44
Budgetary
Price (See Notes)
5.72
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技术文档

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参量

Parametric specs for Display-Oriented ADCs
Resolution (±Counts) 4096
# Input Channels 1
Conv. Rate (ksps) (max) 0.03
Data Bus µP/12
UART
Diff/S.E. Input Diff. Only
Internal VREF (V) (nominal) -2.8
External VREF (V) (min) -5
External VREF (V) (max) 5
Bipolar VIN (±V) (max) 3.5
Package/Pins PDIP/40
PLCC/44
Budgetary
Price (See Notes)
5.72

主要特征

  • Improved 2nd Source!
  • Zero Integrator Phase for Fast Overload Recovery
  • Hysteresis and "Crosstalk" Eliminated
  • Enhanced Bus Driving Capability
  • Byte Organized Three-state Outputs
  • UART Handshake Mode for Serial Interfacing
  • True Differential Input and Reference
  • Up to 30 Conversions per Second
  • Significantly Improved ESD Protection
  • Monolithic, Low Power CMOS Design

应用/用途

  • Current
  • Flow
  • Power
  • Pressure
  • Resistance
  • Speed
  • Temperature
  • Voltage
  • Weight

描述

The ICL7109 is a monolithic 12 bit A/D converter designed for easy interface with microprocessors and UARTs. The 12 bit binary plus polarity and over-range outputs can be directly interfaced to a microprocessor bus. In this mode the ICL7109 is controlled by the microprocessor through the chip select and tow byte enable inputs. For remote data logging applications the ICL7109 outputs are easily converted to a UART handshake mode, working with industry standard UARTs to provide serial data transmission.

This device offers high accuracy by lowering rollover error to less than 1 count and zero reading drift to less than 1μV/ °C. In many data acquisition systems the ICL7109 is an attractive, low cost, one-per-channel alternative to analog multiplexing due to its low power consumption and input bias current.

Maxim has added a zero-integrator phase to the ICL7109, eliminating overrange hangover, "crosstalk" and hysteresis effects. Maxim has also increased the current sourcing capabilities of the ICL7109, enabling it to rapidly drive the large capacitances often found on microprocessor busses.

简化框图

ICL7109:典型工作电路 ICL7109:典型工作电路 Zoom icon

技术文档

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