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MAX11644, MAX11645 2.7V至3.6V和4
2010-05-14 00:00:00
MAX11644, MAX11645 2.7V至3.6V和4.5V至5.5V、低功耗、1/2通道、2线串口、12位ADC The MAX11644/MAX11645 low-power, 12-bit, 1-/2-channel analog-to-digital converters (ADCs) feature internal track/hold (T/H), voltage reference, clock, and an I²C-compatible 2-wire serial interface. These devices operate from a single supply of 2.7V to 3.6V (MAX11645) or 4.5V to 5.5V (MAX11644) and require only 670µA at the maximum sampling rate of 94.4ksps. Supply current falls below 230µA for sampling rates under 40ksps. AutoShutdown™ powers down the devices between conversions, reducing supply current to less than 1µA at low throughput rates. The MAX11644/MAX11645 each measure two single-ended or one differential input. The fully differential analog inputs are software configurable for unipolar or bipolar, and single-ended or differential operation.
The full-scale analog input range is determined by the internal reference or by an externally applied reference voltage ranging from 1V to VDD. The MAX11645 features a 2.048V internal reference and the MAX11644 features a 4.096V internal reference.
The MAX11644/MAX11645 are available in an 8-pin μMAX® package. The MAX11644/MAX11645 are guaranteed over the extended temperature range (-40°C to +85°C). For pin-compatible 10-bit parts, refer to the MAX11646/MAX11647 data sheet.High-Speed I²C-Compatible Serial Interface Single-Supply Internal Reference External Reference: 1V to VDD Internal Clock Internal FIFO with Channel-Scan Mode Low Power Software-Configurable Unipolar/Bipolar Small, 8-Pin µMAX Package
The full-scale analog input range is determined by the internal reference or by an externally applied reference voltage ranging from 1V to VDD. The MAX11645 features a 2.048V internal reference and the MAX11644 features a 4.096V internal reference.
The MAX11644/MAX11645 are available in an 8-pin μMAX® package. The MAX11644/MAX11645 are guaranteed over the extended temperature range (-40°C to +85°C). For pin-compatible 10-bit parts, refer to the MAX11646/MAX11647 data sheet.
- 400kHz Fast Mode
- 1.7MHz High-Speed Mode
- 2.7V to 3.6V (MAX11645)
- 4.5V to 5.5V (MAX11644)
- 2.048V (MAX11645)
- 4.096V (MAX11644)
- 2-Channel Single-Ended or 1-Channel Fully Differential
- 670µA at 94.4ksps
- 230µA at 40ksps
- 60µA at 10ksps
- 6µA at 1ksps
- 0.5µA in Power-Down Mode
MAX11644, MAX11645,pdf :http://www.elecfans.com/soft/39/2010/2010051474792.html
应用/使用
电池供电测试设备
手持式便携应用
医疗仪器
电源监视
接收信号强度指示
太阳能供电远端系统
系统监控
Typical Operating Circuit
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