# WM5621L Low-Power Quadruple 8-Bit DAC

## Description
The WM5621L is a low-power, quadruple 8-bit digital-to-analog converter (DAC) with buffered reference inputs. It provides output voltages ranging from GND to one or two times the reference voltage. It operates from a 2.7V to 5.5V single supply and includes power-on reset, individual/global power-down capabilities, and a serial interface.

## Features
️· Four 8-bit DACs (one low-power, three standard)
️· Programmable output range (1x or 2x)
️· High impedance reference inputs
️· Fast serial interface (up to 1 MHz)
️· 2 or 3-wire interface options
️· Simultaneous update capability
️· Extended temperature range (-25°C to 85°C)
️· Low power consumption (down to 0.18mW)
️· Guaranteed monotonic output

## Applications
️· Mobile Communications
️· Programmable DC voltage sources
️· Digitally controlled attenuators/amplifiers
️· Signal synthesis
️· Automatic test equipment

## Electrical Characteristics
️· Supply Voltage: 2.7V - 5.5V
️· Reference Input Range: GND to VDD - 1.5V
️· Output Load Resistance: 10 kΩ
️· Clock Frequency: Up to 1 MHz
️· Operating Temperature: -25°C to 85°C
️· Typical Supply Current (All DACs on): 3.6mW @ 3.6V, 6mW @ 5V
️· Typical Supply Current (Low Power DAC): 0.54mW @ 3.6V
️· Typical Supply Current (All DACs Shutdown): 0.18mW @ 3.6V

## Serial Interface
️· 12-bit data words
️· Double buffered for simultaneous updates
️· Optional single buffered mode
️· 3-wire interface (DATA, CLK, EN) or 2-wire (DATA, CLK, with EN tied high)
️· Start bit required for each word

## Pin Configuration
️· VDD: Positive supply voltage
️· GND: Ground
️· REF A-D: Reference voltage inputs for each DAC
️· DACA-D: Analog outputs for each DAC
️· DATA: Serial data input
️· CLK: Serial clock input
️· EN: Enable input
️· HWACT: Hardware activate input (for power-down control)

## Ordering Information
️· WM5621LED: -25°C to 85°C, 14-pin plastic SO
️· WM5621LEN: -25°C to 85°C, 14-pin DIP