MAX197

多量程(±10V, ±5V, +10V, +5V)、单+5V、12位数DAS,8+4总线接口

±17V故障保护ADC,可通过软件选择输入量程


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说明

The MAX197 multi-range, 12-bit data-acquisition system (DAS) requires only a single +5V supply for operation, yet accepts signals at its analog inputs that may span both above the power-supply rail and below ground. This system provides 8 analog input channels that are independently software programmable for a variety of ranges: ±10V, ±5V, 0V to +10V, or 0V to +5V. This increases effective dynamic range to 14 bits, and provides the user flexibility to interface 4mA-to-20mA, ±12V, and ±15V powered sensors to a single +5V system. In addition, the converter is overvoltage tolerant to ±16.5V; a fault condition on any channel does not affect the conversion result of the selected channel. Other features include a 5MHz bandwidth track/hold, a 100ksps throughput rate, software-selectable internal or external clock and acquisition, 8+4 parallel interface, and an internal 4.096V or an external reference.

A hardware active-low SHDN pin and two programmable power-down modes (STBYPD, FULLPD) are provided for low-current shutdown between conversions. In STBYPD mode, the reference buffer remains active, eliminating start-up delays.

The MAX197 employs a standard microprocessor (µP) interface. A three-state data I/O port is configured to operate with 8-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.

The MAX197 is available in 28-pin DIP, wide SO, SSOP, and ceramic SB packages.

For a different combination of ranges (±4V, ±2V, 0V to 4V, 0V to 2V), refer to the MAX199 data sheet. For 12-bit bus interface, refer to the MAX196 and MAX198 data sheets.
MAX197:功能框图 MAX197:功能框图 放大+

关键特性

  • 12-Bit Resolution, 1/2LSB Linearity
  • Single +5V Operation
  • Software-Selectable Input Ranges: ±10V, ±5V, 0V to 10V, 0V to 5V
  • Fault-Protected Input Multiplexer (±16.5V)
  • 8 Analog Input Channels
  • 6µs Conversion Time, 100ksps Sampling Rate
  • Internal or External Acquisition Control
  • Internal 4.096V or External Reference
  • Two Power-Down Modes
  • Internal or External Clock

应用

  • 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
Part NumberResolution
(bits)
Input Chan.Conv. Rate
(ksps)
ADC ArchitectureData BusDiff/S.E. InputInternal VREF
(V)
External VREF
(V)
External VREF
(V)
Unipolar VIN
(V)
Bipolar VIN
(±V)
THD
(dB)
INL
(±LSB)
Package/PinsBudgetary
Price
ADCmaxnominalminmaxmaxmaxSee Notes
MAX197 128100SARµP/8S.E. Only4.0962.44.181010-851
PDIP/28
SOIC (W)/28
SSOP/28
$17.19 @1k
查看所有Precision ADCs (< 5Msps) (464)
Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。


MAX197EVKIT: MAX197和MAX199评估板

CAD Symbols and Footprints

  • MAX19700ETM+
  • MAX19700ETM+T
  • MAX19705ETM
  • MAX19705ETM+
  • MAX19705ETM+GH7
  • MAX19705ETM+T
  • MAX19705ETM+TGH7
  • MAX19705ETM-T
  • MAX19706ETM
  • MAX19706ETM+
  • MAX19706ETM+T
  • MAX19706ETM-T
  • MAX19707ETM
  • MAX19707ETM+
  • MAX19707ETM+T
  • MAX19707ETM+TGH7
  • MAX19707ETM-T
  • MAX19708ETM
  • MAX19708ETM+
  • MAX19708ETM+T
  • MAX19708ETM-T
  • MAX1970EEE
  • MAX1970EEE+
  • MAX1970EEE+T
  • MAX1970EEE-T
  • MAX19710ETN
  • MAX19710ETN+
  • MAX19710ETN+T
  • MAX19710ETN-T
  • MAX19713ETN
  • MAX19713ETN+
  • MAX19713ETN+GH7
  • MAX19713ETN+T
  • MAX19713ETN+TGH7
  • MAX19713ETN-T
  • MAX1971EEE
  • MAX1971EEE+
  • MAX1971EEE+T
  • MAX1971EEE-T
  • MAX1972EEE
  • MAX1972EEE+
  • MAX1972EEE+T
  • MAX1972EEE-G05
  • MAX1972EEE-T
  • MAX1972EEE-TG05
  • MAX1973EUB
  • MAX1973EUB+
  • MAX1973EUB+T
  • MAX1973EUB-T
  • MAX1974EUB
  • MAX1974EUB+
  • MAX1974EUB+T
  • MAX1974EUB-G05
  • MAX1974EUB-T
  • MAX1974EUB-TG05
  • MAX19757ETX+
  • MAX1976AETA090+T
  • MAX1976AETA090-T
  • MAX1976AETA120+
  • MAX1976AETA120+T
  • MAX1976AETA130+
  • MAX1976AETA130+T
  • MAX1976AETA150+
  • MAX1976AETA150+T
  • MAX1976AETA180+T
  • MAX1976AETA180-T
  • MAX1976AETT+T
  • MAX1976AETT100+T
  • MAX1976AETT120+
  • MAX1976AETT120+T
  • MAX1976AETT120/V+
  • MAX1976AETT120/V+T
  • MAX1976AETT130+
  • MAX1976AETT130+T
  • MAX1976AETT150+
  • MAX1976AETT150+T
  • MAX1976AETT150/V+
  • MAX1976AETT150/V+T
  • MAX1976AETT160+T
  • MAX1976AETT180+T
  • MAX1976AETT180/V+
  • MAX1976AETT180/V+T
  • MAX1976AETT250+
  • MAX1976AETT250+T
  • MAX1976AEZT+T
  • MAX1976AEZT100+
  • MAX1976AEZT100+T
  • MAX1976AEZT110+
  • MAX1976AEZT110+T
  • MAX1976AEZT120
  • MAX1976AEZT120+
  • MAX1976AEZT120+T
  • MAX1976AEZT120-T
  • MAX1976AEZT125+T
  • MAX1976AEZT150+
  • MAX1976AEZT150+T
  • MAX1976AEZT160+
  • MAX1976AEZT160+T
  • MAX1976AEZT160-T
  • MAX1976AEZT180+
  • MAX1976AEZT180+T
  • MAX1976AEZT250+
  • MAX1976AEZT250+T
  • MAX1976AEZT285+
  • MAX1976AEZT285+T
  • MAX1976AEZT300+T
  • MAX19777AZA+
  • MAX19777AZA+T
  • MAX1977EEI
  • MAX1977EEI+
  • MAX1977EEI+T
  • MAX1977EEI-T
  • MAX1978ETM
  • MAX1978ETM+
  • MAX1978ETM+T
  • MAX1978ETM-T
  • MAX19790ETX+
  • MAX19790ETX+T
  • MAX19790ETX/GH9
  • MAX19791ETX+
  • MAX19791ETX+T
  • MAX19792ETX+
  • MAX19792ETX+T
  • MAX19793ETX+
  • MAX19793ETX+T
  • MAX19794ETX+
  • MAX19794ETX+T
  • MAX1979ETM
  • MAX1979ETM+
  • MAX1979ETM+T
  • MAX1979ETM-T
  • MAX197ACAI
  • MAX197ACAI+
  • MAX197ACAI+T
  • MAX197ACAI-T
  • MAX197ACNI
  • MAX197ACNI+
  • MAX197ACWI
  • MAX197ACWI+
  • MAX197ACWI+T
  • MAX197ACWI-T
  • MAX197AEAI
  • MAX197AEAI+
  • MAX197AEAI+T
  • MAX197AEAI-T
  • MAX197AENI
  • MAX197AENI+
  • MAX197AEWI
  • MAX197AEWI+
  • MAX197AEWI+T
  • MAX197AEWI-T
  • MAX197BCAI
  • MAX197BCAI+
  • MAX197BCAI+T
  • MAX197BCAI-T
  • MAX197BCNI
  • MAX197BCWI
  • MAX197BCWI+
  • MAX197BCWI+T
  • MAX197BCWI-T
  • MAX197BEAI
  • MAX197BEAI+
  • MAX197BEAI+T
  • MAX197BEAI-T
  • MAX197BENI
  • MAX197BENI+
  • MAX197BEWI
  • MAX197BEWI+
  • MAX197BEWI+T
  • MAX197BEWI-T
  • MAX197BMWI/PR
  • MAX197BMWI/PR-T
  • 型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C  

    备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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