MAX188

低功耗、8通道、串行12位ADC

对于3V应用,请参考MAX146和MAX1246


点击查看特定型号的库存状况。

说明

The MAX186/MAX188 are 12-bit data-acquisition systems that combine an 8-channel multiplexer, high-bandwidth track/hold, and serial interface together with high conversion speed and ultra-low power consumption. The devices operate with a single +5V supply or dual ±5V supplies. The analog inputs are software configurable for unipolar/bipolar and single-ended/differential operation.

The 4-wire serial interface directly connects to SPI, QSPI and MICROWIRE® devices without external logic. A serial strobe output allows direct connection to TMS320 family digital signal processors. The MAX186/MAX188 use either the internal clock or an external serial-interface clock to perform successive-approximation A/D conversions. The serial interface can operate beyond 4MHz when the internal clock is used.

The MAX186 has an internal 4.096V reference while the MAX188 requires an external reference. Both parts have a reference-buffer amplifier that simplifies gain trim.

The MAX186/MAX188 provide a hard-wired active-low SHDN pin and two software-selectable power-down modes. Accessing the serial interface automatically powers up the devices, and the quick turn-on time allows the MAX186/MAX188 to be shut down between every conversion. Using this technique of powering down between conversions, supply current can be cut to under 10µA at reduced sampling rates.

The MAX186/MAX188 are available in 20-pin PDIP and SO packages, and in a shrink small-outline package (SSOP), that occupies 30% less area than an 8-pin PDIP. For applications that call for a parallel interface, see the MAX180/MAX181 data sheet. For anti-aliasing filters, consult the MAX274/MAX275 data sheet.

MAX186、MAX188:典型工作电路 MAX186、MAX188:典型工作电路 放大+

关键特性

  • 8-Channel Single-Ended or 4-Channel Differential Inputs
  • Single +5V or ±5V Operation
  • Low Power:
    • 1.5mA (Operating Mode)
    • 2µA (Power-Down Mode)
  • Internal Track/Hold, 133kHz Sampling Rate
  • Internal 4.096V Reference (MAX186)
  • SPI-/QSPI-/MICROWIRE-/TMS320-Compatible 4-Wire Serial Interface
  • Software-Configurable Unipolar or Bipolar Inputs
  • 20-Pin PDIP, SO, SSOP Packages
  • Evaluation Kit Available

应用

  • 自动测试设备(ATE)
  • 电池供电应用
  • 数据采集
  • 高精度过程控制
  • 医疗仪器
  • 便携式数据记录
  • 机器人技术

请查看具体的参数规格 Precision ADCs (< 5Msps) (432)


Part NumberResolution
(bits)
# Input ChannelsConv. Rate
(ksps)
ADC ArchitectureData BusDiff/S.E. InputInternal VREF
(V)
External VREF
(V)
External VREF
(V)
Unipolar VIN
(V)
Bipolar VIN
(±V)
THD
(dB)
Package/PinsBudgetary
Price
(ADC)(max)(nominal)(min)(max)(max)(max)(See Notes)
MAX186 128133SARSPIBoth4.0962.55.254.0962.048-80
CDIP/20
DICE SALES/N
LCC/20
PDIP/20
SOIC (W)/20
SSOP/20
$12.51 @1k
MAX188 -
CDIP/20
PDIP/20
SOIC (W)/20
SSOP/20
$12.42 @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。

MAX186EVKIT: MAX186评估板/评估系统
产品可靠性报告: MAX188.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。

质量管理体系 >
环境管理体系 >

 
Status:
Package:
Temperature:

相关资料

类型 编号 标题
评估板1032MAX186EVKIT MAX186评估板/评估系统