AD5666ARUZ-2

The AD5666 is a low-power, four-channel, 16-bit buffered voltage output DAC that operates from a single 2.7 V to 5.5 V supply and is designed to be monotonious.

The AD5666 has a built-in on-chip voltage reference with an internal gain of 2. The AD5666-1 has a built-in 1.25 V, 5 ppm/°C reference with a full-scale output of 2.5 V; The AD5666-2 has a built-in 2.5 V, 5 ppm/°C reference with a full-scale output of 5 V. When powered on, the on-chip reference is turned off, so an external reference can be used. Performing a write operation on the DAC will turn on the internal reference source.

The device has a built-in power-on reset circuit that ensures that the DAC output is powered up to 0 V (POR pin low) or intermediate level (POR pin high) and maintains that level until a valid write operation is performed. It also features independent shutdown for each channel, reducing the device's power consumption to 400 nA at 5 V in shutdown mode and providing a software-selectable output load.

The LDAC function allows all DAC outputs to be updated at the same time, and users can also select the DAC channels to be updated at the same time. There is also an asynchronous CLR function that can clear all DACs to a software selection: 0 V, intermediate level, or full scale.

The AD5666 features a versatile three-wire serial interface that is capable of operating at clock rates up to 50 MHz and is compatible with standard SPI®, QSPI™, MICROWIRE™, and DSP interface standards. It has a built-in on-chip precision output amplifier that enables rail-to-rail output swing.

AD5666-EP supports defense and aerospace applications (AQEC standard)

1. 四通道16位DAC。
2. 1.25 V/2.5 V、最大10 ppm/ºC片内基准电压源。
3. 提供14引脚TSSOP封装。
4. 可选择上电复位至0 V或中间电平。
5. 关断功能。关断模式下，3 V时DAC的典型功耗为200 nA，5 V时为400 nA。