DAC 4-CH Resistor-String 16-bit 48-Pin TQFP T/R

The DAC8544 is a low-power, quad-channel, 16-bit, voltage output DAC. Its on-chip precision output amplifier allows rail-to-rail voltage swing to be achieved at the output. The DAC8544 is 16-bit monotonic and offers exceptional absolute accuracy with ultralow crosstalk. The DAC8544 uses a 16-bit parallel interface and features additional power-down function pins as well as hardware-enabled, synchronous DAC updating and reset capability. The DAC8544 requires an external reference voltage to set the output range of the DAC. The device incorporates a power-on-reset circuit that ensures that the DAC outputs power up at zero volt and remains there until a valid write takes place. In addition, the DAC8544 contains a power-down feature, accessed via PD\ pin, that reduces the current consumption of the device to 400 nA at 5 V. The power consumption is typically under 5 mW at VDD = 5 V. The DAC8544 is available in a 48-lead TQFP package with an operating temperature range of –40°C to +105°C.

Single Supply: +2.7 V to +5.5 V

Micropower Operation: 950 µA @ 5 V

Rail-To-Rail Voltage Output

Ultralow Crosstalk: –110 dB

Settling Time: 10 µs To ±0.003% FSR

16-Bit Monotonic

Offset Error: ±0.3 mV

Gain Error: ±1 mV

Total Error: ±3 mV

Per-Channel V_REF+, V_REF–, V_FB Pins

Logic Compatible: +1.8 V to +5.5 V

Readback Capability

Double Buffered Inputs

Simultaneous or Sequential Update

Schmitt-Triggered Digital Inputs

Hardware Reset

48-Lead TQFP Package

APPLICATIONS

• Process Control
• Data Acquisition Systems
• Closed-Loop Servo Control
• PC Peripherals
• Optical Networking