The AD5628/AD5648/AD5668 series are 8‑channel 12/14/16‑bit SPI voltage‑output DACs with internal reference, low power consumption and multiple package options.
The AD5628, AD5648 and AD5668 are low‑power, 8‑channel DACs offering 12‑, 14‑ and 16‑bit resolution respectively. They operate from a single 2.7 V to 5.5 V supply, provide an internal 1.25 V or 2.5 V reference with 5 ppm/°C temperature coefficient, and support up to 50 MHz serial clock rates. Features include power‑down mode, LDAC update, and asynchronous CLR functions.
Typical applications include process control, data‑acquisition systems, portable battery‑powered instruments, programmable voltage/current sources, and programmable attenuators. The devices are offered in 14‑pin/16‑pin TSSOP, 16‑pin LFCSP and 16‑pin WLCSP packages.
| Supply Voltage (VDD) | 2.7 V to 5.5 V |
|---|---|
| Power‑down Current | 400 nA at 5 V, 200 nA at 3 V |
| Output Voltage Range | 0 V to VDD (rail‑to‑rail) |
| Operating Temperature Range | -40 °C to +105 °C (industrial) |
| Maximum Serial Clock Frequency | 50 MHz |
The devices operate from 2.7 V up to 5.5 V supply voltage.
The AD5668 provides eight independent output channels.
They can run at up to 50 MHz serial clock frequency.
In shutdown mode the current draw is about 400 nA at 5 V.