AD7091R-2

PRODUCTION

2-Channel, 1 MSPS, Ultralow Power, 12-Bit ADC in 16-Lead TSSOP

Data Sheet (Rev. D) Product Selection Table
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Overview

  • Ultralow system power
    • Flexible power/throughput rate management
  • 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
    • MUXOUT/ADCIN to allow single buffer amplifier
    • Daisy-chain mode
    • 16-lead, 20-lead, and
      24-lead 4 mm × 4 mm LFCSP packages
  • See data sheet for additional features.

The AD7091R-2 / AD7091R-4 / AD7091R-8 family is a multichannel 12-bit, ultralow power, successive approximation analog-to-digital converter (ADC) that is available in two, four, or eight analog input channel options. The AD7091R-2 / AD7091R-4 / AD7091R-8 operate 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 / AD7091R-4 / AD7091R-8 family 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 / AD7091R-4 / AD7091R-8 also feature an on-chip conversion clock, an on-chip accurate 2.5 V reference, and a high speed serial interface.

The AD7091R-2 / AD7091R-4 / AD7091R-8 have a serial port interface (SPI) that allows data to be read after the conversion while achieving a 1 MSPS throughput rate. The conversion process and data acquisition are controlled using the CONVST pin.

The AD7091R-2 / AD7091R-4 / AD7091R-8 use advanced design techniques to achieve ultralow power dissipation at high throughput rates. They also feature 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 prior to acquisition by the ADC.

Applications

  • Battery powered systems
  • Personal digital assistants
  • Medical instruments
  • Mobile communications
  • Instrumentation and control systems
  • Data acquisition systems
  • Optical sensors
  • Diagnostic/monitoring functions
AD7091R-2
2-Channel, 1 MSPS, Ultralow Power, 12-Bit ADC in 16-Lead TSSOP
AD7091R-8 Functional Block Diagram AD7091R-2 Pin Configuration AD7091R-2 PC AD7091R-2 PC1
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Documentation

Data Sheet 1

User Guide 1

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Operational Amplifiers (Op Amps) 9
ADA4899-1
PRODUCTION Unity-Gain Stable, Ultralow Distortion, 1 nV/√Hz Voltage Noise, High Speed Op Amp
ADA4897-1
RECOMMENDED FOR NEW DESIGNS 1 nV/√Hz, Low Power, Rail-to-Rail Output Amplifiers
AD8021
PRODUCTION Low Noise, High Speed Amplifier for 16-Bit Systems
ADA4627-1
PRODUCTION 36 V, 19 MHz, Low Noise, Low Bias Current, JFET Op Amp
ADA4637-1
PRODUCTION 30 V, 80 MHz, Low Noise, Low Bias Current, JFET Op Amp
AD8610
PRODUCTION Precision, Low Input Bias Current, Wide BW JFET Single Op Amp
ADA4841-1
PRODUCTION Low Power, Low Noise and Distortion, Rail-to-Rail Output Amplifier
ADA4896-2
RECOMMENDED FOR NEW DESIGNS 1 nV/√Hz, Low Power, Rail-to-Rail Output Amplifiers
AD8031
PRODUCTION 2.7 V, 800 µA, 80 MHz Rail-to-Rail I/O Single Amplifier
Voltage References 4
ADR4550
PRODUCTION Ultra-Low-Noise, High-Accuracy 5.0V Voltage Reference
REF195
PRODUCTION 5.0V Precision Micropower, Low Dropout, Low Voltage Reference
ADR4530
PRODUCTION Ultra-Low-Noise, High-Accuracy 3.0V Voltage Reference
REF193
PRODUCTION 3.0V Precision Micropower, Low Dropout, Low Voltage Reference
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Tools & Simulations

IBIS Model 1

Evaluation Kits

eval board
schematic 1
EVAL-AD7091R-2

AD7091R-2/AD7091R-4/AD7091R-8 Evaluation Board

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Features and Benefits

  • Full featured evaluation board for the AD7091R-2/AD7091R-4/AD7091R-8 family
  • On-board power supplies
  • Standalone capability
  • System demonstration platform (SDP) compatible ( EVAL-SDP-CB1Z)
  • PC software for control and data analysis (download from product page)

Product Details

The EVAL-AD7091R-2SDZ, EVAL-AD7091R-4SDZ, and EVAL-AD7091R-8SDZ are full featured evaluation boards designed to allow the user to easily evaluate all features of the AD7091R-2/ AD7091R-4/ AD7091R-8 family of analog-to-digital converters (ADCs). The evaluation board can be controlled via the SDP connector (J13). The SDP board ( EVAL-SDP-CB1Z) allows the evaluation board to be controlled through the USB port of a PC using the evaluation board software available for download from the product page.

On-board components include: the AD8031 high speed precision rail-to-rail op amp, the AD8032 high speed precision rail-to-rail dual op amp, the ADP3303 high accuracy 200 mA low dropout linear regulator, and the REF193 3.0 volt precision micropower, low dropout, low voltage reference.

Additional Equipment

  • EVAL-SDP-CB1Z (must be ordered separately) includes a USB cable
  • Signal source
  • PC running Windows XP SP2, Windows Vista, or Windows 7 with USB 2.0 port

EVAL-AD7091R-2
AD7091R-2/AD7091R-4/AD7091R-8 Evaluation Board

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