AD7091R-2 SAR ADC: Pinout, Features and Datasheet

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The AD7091R-2 is a multichannel 12-bit, ultralow power, successive approximation analog-to-digital converter (ADC) that is available in two analog input channel options. The AD7091R-2 operates from a single 2.7 V to 5.25 V power supply and are capable of achieving a sampling rate of 1 MSPS. The AD7091R-2 offers up to eight single-ended analog input channels with a channel sequencer that allows a preprogrammed selection of channels to be converted sequentially. The AD7091R-2 also features an on-chip conversion clock, an on-chip accurate 2.5 V reference, and a high speed serial interface. The AD7091R-2 has a serial port interface (SPI) that allows data to be read after the conversion while achieving a 1 MSPS throughput rate. The AD7091R-2 uses advanced design techniques to achieve ultralow power dissipation at high throughput rates. 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 MUX_OUT and ADC_IN pins allow signal conditioning of the multiplexer output prior to acquisition by the ADC.

This article provides you with a basic overview of the AD7091R-2 SAR ADC, including its pin descriptions, features and specifications, etc., to help you quickly understand what AD7091R-2 is.

● Ultralow system power

   ◆ Flexible power/throughput rate management

   ◆ Normal mode

       ▼ 1.4 mW at 1 MSPS

   ◆ Power-down mode

       ▼ 550 nA typical at V_DD = 5.25 V

       ▼ 435 nA typical at V_DD = 3 V

● High performance

   ◆ 1 MSPS throughput with no latency/pipeline delay

   ◆ SNR: 70 dB typical at 10 kHz input frequency

   ◆ THD: −80 dB typical at 10 kHz input frequency

   ◆ INL: ±0.7 LSB typical, ±1.0 LSB maximum

● Small system footprint

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

   ◆ MUX_OUT/ADC_IN to allow single buffer amplifier

   ◆ Daisy-chain mode

   ◆ 16-lead TSSOP package

● Easy to use

   ◆ SPI/QSPI™/MICROWIRE™/DSP compatible digital interface

   ◆ Integrated programmable channel sequencer

● Built in features for control and monitoring applications

● Wide operating range

   ◆ Temperature range: −40°C to +125°C

   ◆ Specified for V_DD of 2.7 V to 5.25 V

Analog Devices Inc. AD7091R-2BRUZ technical specifications, attributes, parameters and parts with similar specifications to Analog Devices Inc. AD7091R-2BRUZ.

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Analog Devices (NASDAQ: ADI) is a world leader in the design, manufacture, and marketing of a broad portfolio of high performance analog, mixed-signal, and digital signal processing (DSP) integrated circuits (ICs) used in virtually all types of electronic equipment. Since our inception in 1965, we have focused on solving the engineering challenges associated with signal processing in electronic equipment. Used by over 100,000 customers worldwide, our signal processing products play a fundamental role in converting, conditioning, and processing real-world phenomena such as temperature, pressure, sound, light, speed, and motion into electrical signals to be used in a wide array of electronic devices.