产品详细信息

Resolution (Bits) 12 Number of input channels 1 Sample rate (Max) (kSPS) 189 Interface type I2C Architecture SAR Input type Single-Ended Multi-channel configuration Rating Catalog Reference mode Supply Input range (Max) (V) 5.5 Input range (Min) (V) 0 Features Oscillator, Small Size Operating temperature range (C) -40 to 105 Power consumption (Typ) (mW) 0.26 Analog voltage AVDD (Min) (V) 2.7 SNR (dB) 72.5 Analog voltage AVDD (Max) (V) 5.5 INL (Max) (+/-LSB) 1 Digital supply (Min) (V) 2.7 Digital supply (Max) (V) 5.25
Resolution (Bits) 12 Number of input channels 1 Sample rate (Max) (kSPS) 189 Interface type I2C Architecture SAR Input type Single-Ended Multi-channel configuration Rating Catalog Reference mode Supply Input range (Max) (V) 5.5 Input range (Min) (V) 0 Features Oscillator, Small Size Operating temperature range (C) -40 to 105 Power consumption (Typ) (mW) 0.26 Analog voltage AVDD (Min) (V) 2.7 SNR (dB) 72.5 Analog voltage AVDD (Max) (V) 5.5 INL (Max) (+/-LSB) 1 Digital supply (Min) (V) 2.7 Digital supply (Max) (V) 5.25
SOT-23-THN (DDC) 6 5 mm² 2.9 x 1.6 VSSOP (DGK) 8 15 mm² 3 x 4.9
  • I2C-Compatible 2-Wire Interface Which Supports Standard (100kHz), Fast (400kHz), and High Speed (3.4MHz) Modes
  • Extended Power Supply Range (+2.7V to +5.5V)
  • Up to Nine Pin-Selectable Chip Addresses (VSSOP Only)
  • Out-of-Range Alert Function
  • Automatic Power-Down Mode while Not Converting
  • Very Small 6-Pin SOT and 8-Pin VSSOP Packages
  • ADC121C021Q is an Automotive Grade Product that is AEC-Q100 Grade 2 Qualified

Key Specifications

  • Resolution: 12 Bits (No Missing Codes)
  • Conversion Time: 1µs (Typ)
  • INL & DNL: ±1 LSB (Max) (Up to 22ksps)
  • Throughput Rate: 188.9 ksps (Max)
  • Power Consumption (at 22 ksps)
    • 3V Supply: 0.26 mW (Typ)
    • 5v Supply: 0.78 mW (Typ)

All trademarks are the property of their respective owners. I2C is a trademark of Texas Instruments.

  • I2C-Compatible 2-Wire Interface Which Supports Standard (100kHz), Fast (400kHz), and High Speed (3.4MHz) Modes
  • Extended Power Supply Range (+2.7V to +5.5V)
  • Up to Nine Pin-Selectable Chip Addresses (VSSOP Only)
  • Out-of-Range Alert Function
  • Automatic Power-Down Mode while Not Converting
  • Very Small 6-Pin SOT and 8-Pin VSSOP Packages
  • ADC121C021Q is an Automotive Grade Product that is AEC-Q100 Grade 2 Qualified

Key Specifications

  • Resolution: 12 Bits (No Missing Codes)
  • Conversion Time: 1µs (Typ)
  • INL & DNL: ±1 LSB (Max) (Up to 22ksps)
  • Throughput Rate: 188.9 ksps (Max)
  • Power Consumption (at 22 ksps)
    • 3V Supply: 0.26 mW (Typ)
    • 5v Supply: 0.78 mW (Typ)

All trademarks are the property of their respective owners. I2C is a trademark of Texas Instruments.

These converters are low-power, monolithic, 12-bit, analog-to-digital converters (ADCs) that operates from a +2.7 to 5.5V supply. The converter is based upon a successive approximation register architecture with an internal track-and-hold circuit that can handle input frequencies up to 11MHz. These converters operate from a single supply which also serves as the reference. The device features an I2C-compatible serial interface that operates in all three speed modes, including high speed mode (3.4MHz).

The ADC121C021's Alert feature provides an interrupt that is activated when the analog input violates a programmable upper or lower limit value. The device features an automatic conversion mode, which frees up the controller and I2C interface. In this mode, the ADC continuously monitors the analog input for an "out-of-range" condition and provides an interrupt if the measured voltage goes out-of-range.

The ADC121C021 comes in two packages: a small 6-pin SOT package with an alert output, and an 8-pin VSSOP package with an alert output and two address selection inputs. The   ADC121C021Q is available in a 6-pin SOT package. The ADC121C027 comes in a small 6-pin SOT package with an address selection input. The ADC121C027 provides three pin-selectable addresses while the 8-pin VSSOP version of the ADC121C021 provides nine pin-selectable addresses. Pin-compatible alternatives to the 6-pin SOT options are available with additional address options.

Normal power consumption using a +3V or +5V supply is 0.26mW or 0.78mW, respectively. The automatic power-down feature reduces the power consumption to less than 1µW while not converting. Operation over the industrial temperature range of −40°C to +105°C is ensured. Their low power consumption and small packages make this family of ADCs an excellent choice for use in battery operated equipment.

The ADC121C021 and ADC121C027 are part of a family of pin-compatible ADCs that also provide 8 and 10 bit resolution. For 8-bit ADCs see the ADC081C021 and ADC081C027. For 10-bit ADCs see the ADC101C021 and ADC101C027.

These converters are low-power, monolithic, 12-bit, analog-to-digital converters (ADCs) that operates from a +2.7 to 5.5V supply. The converter is based upon a successive approximation register architecture with an internal track-and-hold circuit that can handle input frequencies up to 11MHz. These converters operate from a single supply which also serves as the reference. The device features an I2C-compatible serial interface that operates in all three speed modes, including high speed mode (3.4MHz).

The ADC121C021's Alert feature provides an interrupt that is activated when the analog input violates a programmable upper or lower limit value. The device features an automatic conversion mode, which frees up the controller and I2C interface. In this mode, the ADC continuously monitors the analog input for an "out-of-range" condition and provides an interrupt if the measured voltage goes out-of-range.

The ADC121C021 comes in two packages: a small 6-pin SOT package with an alert output, and an 8-pin VSSOP package with an alert output and two address selection inputs. The   ADC121C021Q is available in a 6-pin SOT package. The ADC121C027 comes in a small 6-pin SOT package with an address selection input. The ADC121C027 provides three pin-selectable addresses while the 8-pin VSSOP version of the ADC121C021 provides nine pin-selectable addresses. Pin-compatible alternatives to the 6-pin SOT options are available with additional address options.

Normal power consumption using a +3V or +5V supply is 0.26mW or 0.78mW, respectively. The automatic power-down feature reduces the power consumption to less than 1µW while not converting. Operation over the industrial temperature range of −40°C to +105°C is ensured. Their low power consumption and small packages make this family of ADCs an excellent choice for use in battery operated equipment.

The ADC121C021 and ADC121C027 are part of a family of pin-compatible ADCs that also provide 8 and 10 bit resolution. For 8-bit ADCs see the ADC081C021 and ADC081C027. For 10-bit ADCs see the ADC101C021 and ADC101C027.

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类型 项目标题 下载最新的英语版本 日期
* 数据表 ADC121C021/C021Q/C027 I2C-Compatible, 12-Bit ADC with Alert Function 数据表 (Rev. F) 19 Mar 2013
电子书 Best of Baker's Best: Precision Data Converters -- SAR ADCs 21 May 2015
EVM 用户指南 ADC121C021EVM Booster Pack User’s Guide 30 Sep 2014
EVM 用户指南 ADC1X1C02X Evaluation Board User Guide 25 Jan 2012

设计和开发

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评估板

ADC121C021EVM — ADC121C021 评估模块

ADC121C021EVM 是一款演示套件,适用于 12 位 1 通道 188.9ksps 2 线接口 SAR 模数转换器 ADC121C021。此 EVM 可供用户评估 ADC121C021 数据转换器的功能和性能。此板包含外部模拟温度传感器 LMT84,让用户可以快速评估 ADC。此 EVM 采用可直接连接到 MSP430F5529 LaunchPad 板的小尺寸布局

注意:ADC121C021EVM 也可用来评估 ADC121C027

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ADC-INPUT-CALC — Analog-to-digital converter (ADC) input driver design tool supporting multiple input types

ADC-INPUT-CALC 是一种在线工具,可为设计模数转换器 (ADC) 的输入缓冲器提供支持。它提供 24 种不同的基于运算放大器的缓冲器电路,这些电路可用于驱动 ADC 输入。可用拓扑涵盖差分单端和变压器耦合输入设计。支持交流耦合和直流耦合设计以及单电源和双电源拓扑。提供两种模式:初学者模式和专家模式。在初学者模式中,设计人员先回答一系列问题,然后会看到解决方案原理图,在某些情况下,还会看到解决方案的可选版本。在专家模式下,设计人员会看到用方框图形式显示的所有 24 (...)
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封装 引脚数 下载
SOT-23-THIN (DDC) 6 了解详情
VSSOP (DGK) 8 了解详情

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