GENERAL DESCRIPTION

The AD7091R-5 is a 12-bit, multichannel, ultra low power, successive approximation analog-to-digital converter (ADC). The AD7091R-5 operates from a single 2.7 V to 5.25 V power supply and typically consumes only 24 μA at a 3 V supply in fast mode.

FEATURES

I2C-compatible serial interface supports standard and

fast modes

Ultra low power: 90 μW typical at 3 V in fast mode

Specified for VDD of 2.7 V to 5.25 V

On-chip accurate 2.5 V reference, 5 ppm/°C typical drift

4 single-ended analog input channels

ALERT function

BUSY function

Autocycle mode

Wide input bandwidth

68 dB signal-to-noise ratio (SNR) typical at input

frequency of 1 kHz

Flexible power/throughput rate management

No pipeline delays

Power-down mode

550 nA typical at VDD = 5.25 V

435 nA typical at VDD = 3 V

20-lead LFCSP and TSSOP packages

Temperature range: ?40°C to +125°C

APPLICATIONS

Battery-powered systems

Personal digital assistants

Medical instruments

Mobile communications

Instrumentation and control systems

Data acquisition systems

Optical sensors

Diagnostic/monitoring functions

AD7091R-5屬于集成電路（IC） > 模數(shù)轉(zhuǎn)換器（ADC）。亞德諾半導(dǎo)體技術(shù)有限公司制造生產(chǎn)的AD7091R-5模數(shù)轉(zhuǎn)換器（ADC）模數(shù)轉(zhuǎn)換器（ADC、A/D 或 A 轉(zhuǎn) D）對(duì)模擬信號(hào)進(jìn)行采樣，例如由麥克風(fēng)采集的聲音或傳感器的輸出，然后將其轉(zhuǎn)換為數(shù)字信號(hào)。一般來(lái)說(shuō)，數(shù)字輸出是二進(jìn)制補(bǔ)碼二進(jìn)制數(shù)，與輸入成比例。輸入類型可能是差分、偽差分或單端輸入。模數(shù)轉(zhuǎn)換器可按照位數(shù)、采樣率、輸入數(shù)、接口、轉(zhuǎn)換器數(shù)和架構(gòu)（例如自適應(yīng)增量、雙斜率、折疊、流水線、SAR、三角積分、兩步式）進(jìn)行選擇。