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精密 DAC (≤10MSPS)

DAC121C085

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具有 I2C 兼容接口和外部参考的 12 位微功耗 DAC

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DAC121C085

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产品详情

Resolution (Bits) 12 Number of DAC channels 1 Interface type I2C Output type Buffered Voltage Settling time (µs) 8.5 Features Cost Optimized, Low Power Reference type Ext Architecture String Rating Catalog Output range (max) (mA/V) 5.5 Output range (min) (mA/V) 0 Sample/update rate (Msps) 0.18 Power consumption (typ) (mW) 0.38 Operating temperature range (°C) -40 to 125
Resolution (Bits) 12 Number of DAC channels 1 Interface type I2C Output type Buffered Voltage Settling time (µs) 8.5 Features Cost Optimized, Low Power Reference type Ext Architecture String Rating Catalog Output range (max) (mA/V) 5.5 Output range (min) (mA/V) 0 Sample/update rate (Msps) 0.18 Power consumption (typ) (mW) 0.38 Operating temperature range (°C) -40 to 125
VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • Ensured Monotonicity to 12-Bits
  • Low Power Operation: 156-µA Maximum at 3.3 V
  • Extended Power Supply Range (2.7 V to 5.5 V)
  • I2C-Compatible 2-Wire Interface Which Supports Standard (100-kHz), Fast (400-kHz), and High-Speed (3.4-MHz) Modes
  • Rail-to-Rail Voltage Output
  • Very Small Package
  • Resolution: 12 bits
  • INL: ±8 LSB (Maximum)
  • DNL: 0.6 / –0.5 LSB (Maximum)
  • Settling Time: 8.5 µs (Maximum)
  • Zero Code Error: 10 mV (Maximum)
  • Full-Scale Error: −0.7%FS (Maximum)
  • Supply Power
    • Normal: 380 µW (3 V) / 730 µW (5 V) (Typical)
    • Power Down: 0.5 µW (3 V) / 0.9 µW (5 V) (Typical)
  • Ensured Monotonicity to 12-Bits
  • Low Power Operation: 156-µA Maximum at 3.3 V
  • Extended Power Supply Range (2.7 V to 5.5 V)
  • I2C-Compatible 2-Wire Interface Which Supports Standard (100-kHz), Fast (400-kHz), and High-Speed (3.4-MHz) Modes
  • Rail-to-Rail Voltage Output
  • Very Small Package
  • Resolution: 12 bits
  • INL: ±8 LSB (Maximum)
  • DNL: 0.6 / –0.5 LSB (Maximum)
  • Settling Time: 8.5 µs (Maximum)
  • Zero Code Error: 10 mV (Maximum)
  • Full-Scale Error: −0.7%FS (Maximum)
  • Supply Power
    • Normal: 380 µW (3 V) / 730 µW (5 V) (Typical)
    • Power Down: 0.5 µW (3 V) / 0.9 µW (5 V) (Typical)

The DAC121C081 is a 12-bit, single-channel, voltage-output digital-to-analog converter (DAC) that operates from a 2.7-V to 5.5-V supply. The output amplifier allows rail-to-rail output swing and has an 8.5-µs settling time. The DAC121C081 uses the supply voltage as the reference to provide the widest dynamic output range, and typically consumes 132 µA while operating at 5 V. It is available in 6-pin SOT and WSON packages, and provides three address options (pin selectable).

As an alternative, the DAC121C085 provides nine I2C addressing options and uses an external reference. It has the same performance and settling time as the DAC121C081, and is available in an 8-lead VSSOP.

The DAC121C081 and DAC121C085 use a 2-wire, I2C-compatible serial interface that operates in all three speed modes, including high-speed mode (3.4 MHz). An external address selection pin allows up to three DAC121C081 or nine DAC121C085 devices per 2-wire bus. Pin compatible alternatives to the DAC121C081 are available that provide additional address options.

The DAC121C081 and DAC121C085 each have a 16-bit register that controls the mode of operation, the power-down condition, and the output voltage. A power-on reset circuit ensures that the DAC output powers up to 0 V. A power-down feature reduces power consumption to less than a microWatt. Their low power consumption and small packages make these DACs an excellent choice for use in battery-operated equipment. Each DAC operates over the extended industrial temperature range of −40°C to +125°C.

The DAC121C081 and DAC121C085 are each part of a family of pin compatible DACs that also provide 8 and 10 bit resolution. For 8-bit DACs see the DAC081C081 and DAC081C085. For 10-bit DACs see the DAC101C081 and DAC101C085.

The DAC121C081 is a 12-bit, single-channel, voltage-output digital-to-analog converter (DAC) that operates from a 2.7-V to 5.5-V supply. The output amplifier allows rail-to-rail output swing and has an 8.5-µs settling time. The DAC121C081 uses the supply voltage as the reference to provide the widest dynamic output range, and typically consumes 132 µA while operating at 5 V. It is available in 6-pin SOT and WSON packages, and provides three address options (pin selectable).

As an alternative, the DAC121C085 provides nine I2C addressing options and uses an external reference. It has the same performance and settling time as the DAC121C081, and is available in an 8-lead VSSOP.

The DAC121C081 and DAC121C085 use a 2-wire, I2C-compatible serial interface that operates in all three speed modes, including high-speed mode (3.4 MHz). An external address selection pin allows up to three DAC121C081 or nine DAC121C085 devices per 2-wire bus. Pin compatible alternatives to the DAC121C081 are available that provide additional address options.

The DAC121C081 and DAC121C085 each have a 16-bit register that controls the mode of operation, the power-down condition, and the output voltage. A power-on reset circuit ensures that the DAC output powers up to 0 V. A power-down feature reduces power consumption to less than a microWatt. Their low power consumption and small packages make these DACs an excellent choice for use in battery-operated equipment. Each DAC operates over the extended industrial temperature range of −40°C to +125°C.

The DAC121C081 and DAC121C085 are each part of a family of pin compatible DACs that also provide 8 and 10 bit resolution. For 8-bit DACs see the DAC081C081 and DAC081C085. For 10-bit DACs see the DAC101C081 and DAC101C085.
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类型 标题 下载最新的英语版本 日期
* 数据表 DAC121C081 and DAC121C085 12-Bit Micro Power Digital-to-Analog Converter With an I2C-Compatible Interface 数据表 (Rev. F) PDF | HTML 2016年 10月 3日
应用手册 A Basic Guide to I2C PDF | HTML 2022年 11月 8日
EVM 用户指南 DAC121C085EVM Booster Pack User’s Guide 2014年 11月 5日
应用手册 AN-2001 Daisy Chaining Precision DACs (Rev. A) 2013年 5月 1日
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DAC121C085EVM — DAC121C085 评估模块

DAC121C085EVM 是一款演示套件，适用于 12 位 1 通道 8.5us 趋稳时间两线制接口数模转换器 DAC121C085。此 EVM 可供用户评估 DAC121C085 数据转换器的功能和性能。此 EVM 采用可直接连接到 MSP430F5529 LaunchPad 板的小尺寸布局。 

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