DAC53508数据手册集成电路（IC）的数模转换器（DAC）规格书PDF

描述 Description

The 10-bit DAC53508 and 8-bit DAC43508 ( DACx3508) are low-power, eight-channel, voltage-output, digital-to-analog converters (DACs). The DACx3508 are specified monotonic by design across a wide power supply range from 1.8 V to 5.5 V. Using an external reference, the DACx3508 provides a full-scale output voltage range of 1.8 V to 5.5 V while consuming 0.1‑mA quiescent current per channel. The DACx3508 also includes per channel, user programmable, power down registers. These registers facilitate the DAC output buffers to start in a 10 kΩ-AGND power-down state, and remain in this state until a power-up command is issued to these output buffers.

Low quiescent current, wide power-supply range, octal channel, and a per-channel power-down option make the DACx3508 an excellent choice for high-density, low-power, battery-operated systems.

The devices communicate through the 3-wire (write-only) SPI interface. These devices also have a load DAC (LDAC) and clear CLR inputs.

特性 Features

• ±1-LSB INL and DNL
• Wide operating range
• Power supply: 1.8 V to 5.5 V
• Temperature range: –40°C to +125°C

• 3-wire SPI interface
• VIH = 2.4 V for 2.7 V ≤ VDD ≤ 5.5 V
• VIH = (VDD – 0.3 V) for 1.8 V ≤ VDD ≤ 2.7 V

• LDAC pin for simultaneous output update
• Very low power: 0.1 mA/channel at 1.8 V
• Low-power start-up mode: Outputs powered down with 10 kΩ to AGND.
• Tiny package
• 16-pin WQFN (3 mm × 3 mm)