DAC 1-CH Resistor-String 16-bit 32-Pin TQFP T/R

The DAC8541 is a low-power, single 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 DAC8541 utilizes a 16-bit parallel interface and features additional powerdown function pins as well as hardware-enabled, asynchronous DAC updating and reset capability. The DAC8541 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 output powers up at min-scale and remains there until a valid write takes place to the device. In addition, the DAC8541 contains a power-down feature, accessed via two hardware pins, that when enabled reduces the current consumption of the device to 200 nA at 5 V. The low power consumption of this device in normal operation makes it ideally suited for use in portable battery operated equipment applications. The power consumption is 1.2 mW at AVDD = 5 V reducing to 1 uW in power-down mode. The DAC8541 is available in a 32-lead TQFP package with an operating temperature range of –40°C to 85°C.

Micropower Operation: 250 uA at 5 V AV_DD

Power-On Reset to Min-Scale

16-Bit Monotonic

Settling Time: 10 us to ±0.003% FSR

16-Bit Parallel Interface

On-Chip Output Buffer Amplifier With Rail-to-Rail Operation

Hardware Reset to Min-Scale or Mid-Scale

Double-Buffered Architecture

Asynchronous LDAC Control

Data Readback Support

1.8 V Compatible Digital Interface:

• DV_DD = 1.8 V–5.5 V

Wide Analog Supply Range:

• AV_DD = 2.7 V–5.5 V

32-Lead 5 mm × 5 mm TQFP Package

APPLICATIONS

• Process Control
• Data Acquisition Systems
• Closed-Loop Servo Control
• PC Peripherals
• Portable Instrumentation