AD7091R-5BCPZ-RL7

IC ADC 12Bit 4CH 1MSPS 20LFCSP

Product Details

The AD7091R-5 is a 12-bit, multichannel, ultralow 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. 

The AD7091R-5 provides a 2-wire serial interface compatible with I2C interfaces. The conversion process can be controlled by a sample mode via the CONVST pin, an autocycle mode selected through software control, or a command mode in which conversions occur across I2C write operations.

The device contains a wide bandwidth track-and-hold amplifier that can handle input frequencies up to 1.5 MHz. The AD7091R-5 also features an on-chip conversion clock, an on-chip accurate 2.5 V reference, and a programmable out-of-bounds user alert function.

The AD7091R-5 offers four single-ended analog input channels with a channel sequencer that allows a preprogrammed selection of channels to be converted sequentially.

The AD7091R-5 uses advanced design techniques to achieve ultralow power dissipation without compromising performance. It also features flexible power management options. An on-chip configuration register allows the user to set up different operating conditions. These include power management, alert functionality, busy indication, channel sequencing, and general-purpose output pins. The MUXOUT and ADCIN pins allow signal conditioning of the multiplexer output before acquisition by the ADC.

Applications

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Battery powered systems

Personal digital assistants

Medical instruments

Mobile communications

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Instrumentation and control systems

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Data acquisition systems

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Optical sensors

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Diagnostic/monitoring functions

### Features and Benefits

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I2C-compatible serial interface supports standard and fast modes

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Ultralow power: 90 μW typical at 3 V in fast mode

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Specified for VDD of 2.7 V to 5.25 V

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

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4 single-ended analog input channels

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ALERT function

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BUSY function

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Autocycle mode

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Wide input bandwidth

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68 dB signal-to-noise ratio SNR typical at input frequency of 1 kHz

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Flexible power/throughput rate management

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No pipeline delays

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Power-down mode

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550 nA typical at VDD = 5.25 V

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435 nA typical at VDD = 3 V

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20-lead LFCSP and TSSOP packages

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Temperature range: −40°C to +125°C