MAX198

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


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说明

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).
MAX196、MAX198:功能框图 MAX196、MAX198:功能框图 放大+

关键特性

  • 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

  • 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
MAX196 126100SARµP/12S.E. Only4.0962.44.181010-851
PDIP/28
SOIC (W)/28
SSOP/28
$16.15 @1k
MAX198 4.0964.096
PDIP/28
SOIC (W)/28
SSOP/28
$17.44 @500
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。


MAX196EVKIT: MAX196和MAX198评估板
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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相关资料

类型 编号 标题
评估板1099MAX196EVKIT MAX196MAX198评估板