CM7502L DAC Precision, bipolar, voltage output supports XY2-100 protocol, 16 bit

Overview

The CM7502L is a 16-bit unbuffered voltage-output digital-to-analog converter (DAC). It operates from a single 2.7 V to 5.5 V power supply and guarantees output voltage monotonicity over the full temperature range. Its unbuffered design results in extremely low power consumption, with only 120 μA of static current and a low zero-code offset error of 0.5 LSB.

The CM7502L supports a reference voltage input range from 2 V to VDD. The voltage output swing is from 0 V to VREF. The CM7502L integrates a precisely matched internal resistor string which, when used together with an external precision operational amplifier, can generate a bipolar voltage output swing of up to ±VREF at the RFB pin.

The CM7502L adopts an SPI/QSPI/MICROWIRE-compatible three-wire serial interface, capable of operating at clock rates up to 50 MHz, and can be directly connected to optocouplers to meet specific application requirements. Upon power-up, the reset circuit drives the CM7502L output to mid-scale. The CLR pin can also drive the CM7502L output to mid-scale.

The CM7502L supports operation only in bipolar output mode.

Features

• Single-supply operation: 2.7 V to 5.5 V

• Low supply current: 120 μA

• INL error: ±0.4 LSB

• Low glitch impulse: 0.5 nV·s

• Short settling time: 1 μs

• Guaranteed monotonic output voltage over the full temperature range

• Voltage output capable of directly driving a 60 kΩ load

• 50 MHz SPI/QSPI/MICROWIRE-compatible serial interface

• Power-on reset drives the DAC output to mid-scale

• CLR asynchronous reset pin

• Reference source current compensation

• MSOP-10 (3 mm × 3 mm) and DFN-10 (3 mm × 3 mm) packages

Applications

• Laser galvanometer controllers

• High-precision instrumentation calibration circuits

• Process control and industrial automation

• Automatic test equipment (ATE)

• Precision signal sources

MSOP10

Product list

Precision DAC

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