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6通道、多量程、5V、12位DAS,带有12位总线接口和故障保护

±17V故障保护ADC,可通过软件选择输入量程

产品详情

主要特征

应用/用途

Parametric specs for Precision ADCs (< 5Msps)
Resolution (bits) (ADC) 12
# Input Channels 6
Conv. Rate (ksps) (max) 100
Data Bus µP/12
ADC Architecture SAR
Diff/S.E. Input S.E. Only
Internal VREF (V) (nominal) 4.096
External VREF (V) (min) 2.4
External VREF (V) (max) 4.18
Unipolar VIN (V) (max) 4.096
Bipolar VIN (±V) (max) 4.096
INL (±LSB) 1
Package/Pins SOIC (W)/28
SSOP/28
Budgetary
Price (See Notes)
19.25
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参量

Parametric specs for Precision ADCs (<u><</u> 5Msps)
Resolution (bits) (ADC) 12
# Input Channels 6
Conv. Rate (ksps) (max) 100
Data Bus µP/12
ADC Architecture SAR
Diff/S.E. Input S.E. Only
Internal VREF (V) (nominal) 4.096
External VREF (V) (min) 2.4
External VREF (V) (max) 4.18
Unipolar VIN (V) (max) 4.096
Bipolar VIN (±V) (max) 4.096
INL (±LSB) 1
Package/Pins SOIC (W)/28
SSOP/28
Budgetary
Price (See Notes)
19.25

主要特征

  • 12-Bit Resolution, 1/2 LSB Linearity
  • Single +5V Supply Operation
  • Software-Selectable Input Ranges:
    • ±10V, ±5V, 0V to +10V, 0V to +5V (MAX196)
    • ±VREF, ±VREF/2, 0V to +VREF, 0V to +VREF/2 (MAX198)
  • Internal 4.096V or External Reference
  • Fault-Protected Input Multiplexer
  • 6 Analog Input Channels
  • 6µs Conversion Time, 100ksps Sampling Rate
  • Internal or External Acquisition Control
  • Two Power-Down Modes
  • Internal or External Clock

应用/用途

  • 自动测试设备(ATE)
  • 数据采集
  • 工业控制系统
  • 医疗仪器
  • 机器人技术
  • 电信

描述

The MAX196/MAX198 multirange, 12-bit data-acquisition systems (DAS) require only a single +5V supply for operation, yet convert analog signals at their inputs up to ±10V (MAX196) and ±4V (MAX198). These systems provide six analog input channels that are independently software programmable for a variety of ranges: ±10V, ±5V, 0V to +10V, and 0V to +5V for the MAX196; ±VREF, ±VREF/2, 0V to +VREF, and 0V to +VREF/2 for the MAX198. This range switching increases the effective dynamic range to 14 bits and provides the flexibility to interface ±12V, ±15V, and 4mA to 20mA powered sensors to a single +5V system. In addition, these converters are fault protected to ±16.5V; a fault condition on any channel will not affect the conversion result of the selected channel. Other features include a 5MHz bandwidth track/hold, 100ksps throughput rate, software-selectable internal/external clock, internal/external acquisition control, 12-bit parallel interface, and internal 4.096V or external reference.

Two programmable power-down modes (STBYPD, FULLPD) provide low-current shutdown between conversions. In STBYPD mode, the reference buffer remains active, eliminating start-up delays.

The MAX196/MAX198 employ a standard microprocessor (µP) interface. A three-state data I/O port is configured to operate with 16-bit data buses, and data-access and bus-release timing specifications are compatible with most popular µPs. All logic inputs and outputs are TTL/CMOS compatible.

These devices are available in 28-pin DIP, wide SO, SSOP (55% smaller in area than wide SO), and ceramic SB packages. For 8+4 bus interface, see the MAX197 and the MAX199 data sheets. An evaluation kit is available (MAX196EVKIT-DIP).

简化框图

MAX196、MAX198:功能框图 MAX196、MAX198:功能框图 Zoom icon

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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