MAX191

低功耗、12位采样ADC,内置电压基准及关断模式

对于新设计,请参考MAX129X系列产品


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说明

The MAX191 is a monolithic, CMOS, 12-bit analog-to-digital converter (ADC) featuring differential inputs, track/hold (T/H), internal voltage reference, internal or external clock, and parallel or serial µP interface. The MAX191 has a 7.5µs conversion time, a 2µs acquisition time, and a guaranteed 100ksps sample rate.

The MAX191 operates from a single +5V supply or from dual ±5V supplies, allowing ground-referenced bipolar input signals. The device features a logic power-down input, which reduces the 3mA VDD supply current to 50µA max, including the internal-reference current.

Decoupling capacitors are the only external components needed for the power supply and reference. This ADC operates with either an external reference, or an internal reference that features an adjustment input for trimming system gain errors.

The MAX191 provides three interface modes: two 8-bit parallel modes, and a serial interface mode that is compatible with SPI™, QSPI™, and MICROWIRE™ serial-interface standards.
MAX191:功能框图 MAX191:功能框图 放大+

关键特性

  • 12-Bit Resolution, 1/2 LSB Linearity
  • +5V or ±5V Operation
  • Built-In Track/Hold
  • Internal Reference with Adjustment Capability
  • Low Power:
    • 3mA Operating Mode
    • 20µA Power-Down Mode
  • 100ksps Tested Sampling Rate
  • Serial and 8-Bit Parallel µP Interface
  • 24-Pin Narrow DIP and Wide SO Packages

应用

  • 自动测试设备(ATE)
  • 电池供电数据记录
  • 数据采集
  • 数字信号处理(DSP)
  • 机电系统
  • 高精度过程控制
  • PC笔输入量化器
  • 电信

请查看具体的参数规格 Precision ADCs (< 5Msps) (437)


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)
THD
(dB)
INL
(±LSB)
Package/PinsBudgetary
Price
ADCmaxnominalminmaxmaxSee Notes
MAX191 121100SAR
µP/8
SPI
Diff. Only4.0962.554.096-801
CDIP/24
DICE SALES/N
PDIP/24
SOIC (W)/24
$13.16 @1k

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。

MAX191EVKIT: MAX191评估系统/评估板
产品可靠性报告: MAX191.pdf 
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C   Material Composition  

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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评估板1036MAX191EVKIT MAX191评估系统/评估板