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ADC122S021

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2 通道、50ksps 至 200ksps、12 位模数转换器

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数据表

ADC122S021

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产品详情

Resolution (Bits) 12 Sample rate (max) (ksps) 200 Number of input channels 2 Interface type Microwire (Serial I/O), SPI Architecture SAR Input type Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode Supply Input voltage range (max) (V) 5.25 Input voltage range (min) (V) 0 Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 2.2 Analog supply voltage (min) (V) 2.7 Analog supply voltage (max) (V) 5.25 SNR (dB) 72 Digital supply (min) (V) 2.7 Digital supply (max) (V) 5.25
Resolution (Bits) 12 Sample rate (max) (ksps) 200 Number of input channels 2 Interface type Microwire (Serial I/O), SPI Architecture SAR Input type Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode Supply Input voltage range (max) (V) 5.25 Input voltage range (min) (V) 0 Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 2.2 Analog supply voltage (min) (V) 2.7 Analog supply voltage (max) (V) 5.25 SNR (dB) 72 Digital supply (min) (V) 2.7 Digital supply (max) (V) 5.25
VSSOP (DGK) 8 14.7 mm² (3 mm × 4.9 mm)
  • Specified over a Range of Sample Rates.
  • Two Input Channels
  • Variable Power Management
  • Single Power Supply with 2.7V - 5.25V Range

Key Specifications

  • DNL +0.4 / −0.2 LSB (typ)
  • INL ± 0.35 LSB (typ)
  • SNR 72.0 dB (typ)
  • Power Consumption 2.2 mW (typ)
    • 5V Supply 7.9 mW (typ)

All trademarks are the property of their respective owners.

  • Specified over a Range of Sample Rates.
  • Two Input Channels
  • Variable Power Management
  • Single Power Supply with 2.7V - 5.25V Range

Key Specifications

  • DNL +0.4 / −0.2 LSB (typ)
  • INL ± 0.35 LSB (typ)
  • SNR 72.0 dB (typ)
  • Power Consumption 2.2 mW (typ)
    • 5V Supply 7.9 mW (typ)

All trademarks are the property of their respective owners.

The ADC122S021 is a low-power, two-channel CMOS 12-bit analog-to-digital converter with a high-speed serial interface. Unlike the conventional practice of specifying performance at a single sample rate only, the ADC122S021 is fully specified over a sample rate range of 50 ksps to 200 ksps. The converter is based on a successive-approximation register architecture with an internal track-and-hold circuit. It can be configured to accept one or two input signals at inputs IN1 and IN2.

The output serial data is straight binary, and is compatible with several standards, such as SPI™, QSPI™, MICROWIRE, and many common DSP serial interfaces.

The ADC122S021 operates with a single supply that can range from +2.7V to +5.25V. Normal power consumption using a +3V or +5V supply is 2.2 mW and 7.9 mW, respectively. The power-down feature reduces the power consumption to just 0.14 µW using a +3V supply, or 0.32 µW using a +5V supply.

The ADC122S021 is packaged in an 8-lead VSSSOP package. Operation over the industrial temperature range of −40°C to +85°C is ensured.

The ADC122S021 is a low-power, two-channel CMOS 12-bit analog-to-digital converter with a high-speed serial interface. Unlike the conventional practice of specifying performance at a single sample rate only, the ADC122S021 is fully specified over a sample rate range of 50 ksps to 200 ksps. The converter is based on a successive-approximation register architecture with an internal track-and-hold circuit. It can be configured to accept one or two input signals at inputs IN1 and IN2.

The output serial data is straight binary, and is compatible with several standards, such as SPI™, QSPI™, MICROWIRE, and many common DSP serial interfaces.

The ADC122S021 operates with a single supply that can range from +2.7V to +5.25V. Normal power consumption using a +3V or +5V supply is 2.2 mW and 7.9 mW, respectively. The power-down feature reduces the power consumption to just 0.14 µW using a +3V supply, or 0.32 µW using a +5V supply.

The ADC122S021 is packaged in an 8-lead VSSSOP package. Operation over the industrial temperature range of −40°C to +85°C is ensured.
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顶层文档 类型 标题 格式选项 下载最新的英语版本 日期
* 数据表 ADC122S021 2 Channel, 50 ksps to 200 ksps 12-Bit A/D Converter 数据表 (Rev. D) 2013-3-19
电路设计 低输入偏置电流前端 SAR ADC 电路 (Rev. B) PDF | HTML 英语版 (Rev.B) PDF | HTML 2024-10-7
电子书 Best of Baker's Best: Precision Data Converters -- SAR ADCs 2015-5-21

设计与开发

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驱动程序或库

ADC128S052SW-LINUX — 用于 ADC128S052 的 Linux 驱动程序

The Linux driver supports the ADC128S052 series of ADCs. The Linux driver supports communication through the SPI bus and interfaces with the IIO sub-system.

 

Linux Mainline Status

Available in Linux Main line: Yes
Available through git.ti.com: N/A

Supported Devices:

  • adc128s052
  • adc122s021

 

Linux Source (...)

支持的产品和硬件
设计工具

ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.

The ADC-TO-VREF-SELECT tool enables the pairing of TI analog-to-digital converters (ADCs) and series voltage references. Users can select an ADC device and the desired reference voltage, and the tool will list up to two voltage reference recommendations.
支持的产品和硬件
封装 引脚 CAD 符号、封装和 3D 模型
VSSOP (DGK) 8 Ultra Librarian
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