AD7091R 1 MSPS, Ultralow Power, 12-Bit ADC in 10-Lead LFCSP and MSOP

Lowest Power 12-Bit SAR ADC Available. On-Chip, Accurate 2.5 V Reference. High Throughput Rate with Ultralow Power Consumption. Flexible Power/Throughput Rate Management. Average power scales with the throughput rate. Power-down mode allows the average power consumption to be reduced when the device is not performing a conversion. Single Supply Operation with VDRIVE Function. The AD7091R operates from a single 2.7 V to 5.25 V supply. The VDRIVE function allows the serial interface to connect directly to 1.8 V to 3.3 V processors.

The AD7091R is a 12-bit successive approximation analog-to-digital converter (ADC) that offers ultralow power consumption (typically 349 µA at 3 V and 1 MSPS) while achieving fast throughput rates (1 MSPS with a 50 MHz SCLK). Operating from a single 2.7 V to 5.25 V power supply, the part contains a wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 7 MHz. The AD7091R also features an on-chip conversion clock, accurate reference, and high speed serial interface.

The conversion process and data acquisition are controlled using a CONVST signal and an internal oscillator. The AD7091R has a serial interface that allows data to be read after the conversion while achieving a 1 MSPS throughput rate.

The AD7091R uses advanced design and process techniques to achieve very low power dissipation at high throughput rates. An on-chip, accurate 2.5 V reference is available

Product Highlights
  • Lowest Power 12-Bit SAR ADC Available.
  • On-Chip, Accurate 2.5 V Reference.
  • High Throughput Rate with Ultralow Power Consumption.
  • Flexible Power/Throughput Rate Management. Average power scales with the throughput rate. Power-down mode allows the average power consumption to be reduced when the device is not performing a conversion.
  • Single Supply Operation with VDRIVE Function. The AD7091R operates from a single 2.7 V to 5.25 V supply. The VDRIVE function allows the serial interface to connect directly to 1.8 V to 3.3 V processors.
Applications
  • Battery-powered systems – Handheld meters – Medical instruments – Mobile communications
  • Instrumentation and control systems
  • Data acquisition systems
  • Optical sensors
  • Diagnostic/monitoring functions
  • Energy harvesting
Features and Benefits
  • Fast throughput rate of 1 MSPS
  • Specified for VDD of 2.7 V to 5.25 V
  • Logic voltage VDRIVE of 1.65 V to 5.25 V
  • INL of ±1 LSB maximum
  • Analog input range of 0 V to VREF
  • Ultralow power
    • 349 µA typical at 3 V and 1 MSPS
    • 264 nA typical at 3 V in power-down mode
  • 349 µA typical at 3 V and 1 MSPS
  • 264 nA typical at 3 V in power-down mode
  • Internal 2.5 V reference, ±4.5 ppm/°C typical drift
  • Wide input bandwidth
  • Flexible power/throughput rate management
  • High speed serial interface
  • SPI®/QSPI™/MICROWIRE™/DSP compatible
  • BUSY indicator
  • Power-down mode
  • 10-lead, 3 mm × 2 mm LFCSP and 10-lead MSOP packages
  • Temperature range of −40°C to +125°C
    • Analog to Digital Converters
    IBIS Models
    Reference Designs
    Data Sheets
    Documentnote
    AD7091R: 1 MSPS, Ultralow Power, 12-Bit ADC in 10-Lead LFCSP and MSOP Data Sheet (Rev. B)PDF 516.92 K
    Application Notes
    Documentnote
    AN-935: Designing an ADC Transformer-Coupled Front End (Rev. 0)PDF 363 kB
    AN-742: Frequency Domain Response of Switched-Capacitor ADCs (Rev. B)PDF 401 kB
    AN-931: Understanding PulSAR ADC Support Circuitry (Rev. 0)PDF 299 kB
    AN-1141: Powering a Dual Supply Precision ADC with Switching Regulators (Rev. 0)PDF 640 kB
    AN-932: Power Supply Sequencing (Rev. 0)PDF 95 kB
    AN-877: Interfacing to High Speed ADCs via SPI (Rev. A)PDF 1594 kB
    User Guides
    Documentnote
    UG-409: Evaluation Board for the AD7091R Analog-to-Digital ConverterPDF 1662 kB
    Technical Books
    Documentnote
    Order Information
    Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
    AD7091RBCPZ-RL Production10 ld LFCSP (2x3mm w/0.9x2.44mmEP)REEL 10000-40 to 125C02.15Y
    AD7091RBCPZ-RL7 Production10 ld LFCSP (2x3mm w/0.9x2.44mmEP)REEL 3000-40 to 125C02.15Y
    AD7091RBRMZ Production10 ld MSOPOTH 50-40 to 125C2.552.17Y
    AD7091RBRMZ-RL7 Production10 ld MSOPREEL 1000-40 to 125C02.17Y
    Evaluation Boards
    Part NumberDescriptionPriceRoHS
    EVAL-AD7091RSDZEvaluation Board59Y
    EVAL-SDP-CB1ZEvaluation Controller Board99Y
    Reference Materials
    AD7091R: 1 MSPS, Ultralow Power, 12-Bit ADC in 10-Lead LFCSP and MSOP Data Sheet (Rev. B) ad7091r
    AD7091R:1 MSPS、超低功耗、12-Bit ADC，采用10引脚LFCSP和MSOP封装 (Rev. 0) ad7091r
    AD7091R IBIS Model ad7091r
    CN0247 设计和集成文件 ad7091r
    CN0387 Design & Support Files hmc547
    AD7091R参考代码 ad7091r
    AN-935: Designing an ADC Transformer-Coupled Front End (Rev. 0) ad9220
    AN-742: Frequency Domain Response of Switched-Capacitor ADCs (Rev. B) ad7476
    AN-931: Understanding PulSAR ADC Support Circuitry (Rev. 0) ad7476
    AN-1141: Powering a Dual Supply Precision ADC with Switching Regulators (Rev. 0) ad7610
    AN-932: 电源时序控制 (Rev. 0) ad7628
    AN-1141: 用开关调节器为双电源精密ADC供电 (Rev. 0) adp1610
    AN-931: 了解PulSAR ADC支持电路 (Rev. 0) ad7476
    AN-932: Power Supply Sequencing (Rev. 0) ad7660
    AN-877: 通过SPI与高速ADC接口[中文版] (Rev. A) ad9271
    AN-877: Interfacing to High Speed ADCs via SPI (Rev. A) ad7091r
    AN-935: ADC变压器耦合前端设计[中文版] (Rev. 0) ad6655
    UG-409: Evaluation Board for the AD7091R Analog-to-Digital Converter ad7091r
    MT-031: 实现数据转换器的接地并解开AGND和DGND的谜团 ad6672
    MT-002: 奈奎斯特准则对数据采样系统设计有何意义 ad6672
    MT-001: 揭开公式(SNR = 6.02N + 1.76dB)的神秘面纱 ad6672
    SAR ADC & Driver Quick-Match Guide ad7476
    CN0350：针对压电传感器的 12 位、 1 MSPS 、单电源、双芯片数据采集系统 ad7091r
    CN-0336：12位、300 kSPS、单电源、完全隔离式数据采集系统，用于4-20 mA输入 adum5401
    CN-0335：12位、300 kSPS、单电源、完全隔离式数据采集系统，用于±10 V输入 adum5401
    CN0247：12位、1 MSPS、单电源、低功耗数据采集系统 ad7091r
    CN0337：带三线式补偿的12位、300 kSPS、单电源、完全隔离式RTD温度测量系统 adum5401
    Exploring Different SAR ADC Analog Input Architectures ad7982
    Calibration-Free Return Loss Measurement ad7091r
    MS-2124: Understanding AC Behaviors of High Speed ADCs ad7091r
    MS-1779：九项常被忽略的ADC技术规格 ad6672
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