# WM2604 Quad 10-Bit DAC

## Features
· Four 10-bit voltage output DACs
· Dual 2.7V to 5.5V supply (separate digital & analog)
· DNL: ±0.1 LSB, INL: ±0.4 LSB
· Low power consumption: 5.5mW (slow, 5V), 3.3mW (slow, 3V)
· Compatible with TMS320, (Q)SPI, and Microwire interfaces
· Programmable settling time: 4µs or 12µs

## Applications
· Battery powered test instruments
· Digital offset/gain adjustment
· Industrial controls
· Machine/motion control
· Wireless communication systems
· Speech synthesis
· Arbitrary waveform generation

## Ordering Information
· WM2604CDT: 0° to 70°C, 16-pin TSSOP
· WM2604IDT: -40° to 85°C, 16-pin TSSOP

## Description
· Quad 10-bit voltage output, resistor string DAC
· Individual DAC power down via software
· Hardware control for full DAC power down (10nA current)
· Supports industry-standard microprocessors/DSPs (TMS320 family)
· 16-bit serial programming (address, control, 10-bit data)
· Two supplies: digital (DVDD) & analog (AVDD) – can be tied together

## Pin Descriptions (Key Pins)
· DVDD: Digital supply
· AVDD: Analog supply
· NPD: Power Down (active low) - disables all DACs
· NLDAC: Load DAC (active low) - updates DAC latches
· DIN: Serial Data Input
· SCLK: Serial Clock Input
· NCS: Chip Select (active low)
· FS: Frame Synchronization
· REFINAB/REFINCD: Reference Voltage Inputs (for DAC pairs)
· OUTA/OUTB/OUTC/OUTD: DAC Outputs

## Electrical Characteristics (Typical)
· Resolution: 10 bits
· Static Current (AVDD = 5V): 1.4-5.5mA
· Static Current (AVDD = 3V): 1.0-4.5mA

## Serial Interface
· Data Transfer: 16-bit word (address, control, 10-bit data)
· Max SCLK: 20 MHz
· Programmable Settling Time & Power Down via serial control bits.