Analog Devices Inc. AD5691/2/3 nanoDAC+ 数模转换器

ADI AD5691R， AD5692R， & AD5693R nanoDAC+®数模转换器具备低功耗、单通道、16/14/12位缓冲电压输出等特征。上述器件均内置 2.5V 内部基准电压（默认启用），具有 2ppm/°C 漂移。输出跨度经编程可设置为 0V 至VREF ，或 0V 到 2×VREF。所有装置操作采用 2.7V 至 5.5V 单电源供电，设计时保证了单调性。该器件采用 2.00mm×2.00mm、8 引脚 LFCSP 或 10 引脚 MSOP封装。内部上电复位电路确保数模转换器寄存器上电时写入零电平，而内部输出缓冲器配置为正常模式。AD5693R/AD5692R/AD5691R 具有关断模式，可在 5V 时将器件电流消耗降至 2μA（最大值），并且提供软件可选的输出负载。AD5693R/AD5692R/AD5691R 采用 I2C 接口实现。某些器件选项还提供异步 RESET 引脚和 V逻辑电路 引脚，可兼容 1.8 V。

The devices are available in a 2.00mm × 2.00mm, 8-lead LFCSP or a 10-lead MSOP. The internal power-on reset circuit ensures that the DAC register is written to zero scale at power-up while the internal output buffer is configured in normal mode. The AD5693R/AD5692R/AD5691R contain a power-down mode that reduces the current consumption of the device to 2μA (maximum) at 5V and provides software selectable output loads. The AD5693R/AD5692R/AD5691R use an I2C interface. Some device options also include an asynchronous RESET pin and a VLOGIC pin, allowing 1.8 V compatibility.

特性

  • Ultra-small package: 2mm × 2mm, 8-lead LFCSP
  • High relative accuracy (INL): ±2 LSB maximum at 16 bits
  • Low drift, 2.5V reference: 2ppm/°C typical
  • Selectable span output: 2.5V or 5V
  • Total unadjusted error (TUE): ±0.06% of FSR maximum
  • Offset error: ±1.5mV maximum
  • Gain error: ±0.05 % of FSR maximum
  • Low glitch: 0.1nV-sec
  • High drive capability: 20mA
  • Low power: 1.2mW at 3.3V
  • Independent logic supply: 1.8V to 5.5V
  • Wide operating temperature range: −40°C to +105°C
  • Robust 4 kV HBM ESD protection

应用

  • Process controls
  • Data acquisition systems
  • Digital gain and offset adjustment
  • Programmable voltage sources
  • Optical modules

Block Diagram

Analog Devices Inc. AD5691/2/3 nanoDAC+ 数模转换器
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