返回Analog Devices Inc.

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

  • 2mm × 2mm, 8-lead LFCSP Ultra-small package
  • ±2LSB maximum at 16 bits High relative accuracy (INL)
  • 2ppm/°C typical Low drift, 2.5V reference
  • 2.5V or 5V Selectable span output
  • ±0.06% of FSR maximum Total unadjusted error (TUE)
  • ±1.5mV Maximum offset error
  • ±0.05% of FSR maximum Gain error
  • 0.1nV-sec Low glitch
  • 20mA High drive capability
  • 1.2mW at 3.3V Low power
  • 1.8V to 5.5V Independent logic supply
  • −40°C to +105°C Wide operating temperature range
  • Robust 4kV 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
发布日期: 2014-04-21 | 更新日期: 2025-02-07