Transistor And Integrated Circuit Chip AD5689 RBCPZ Dual SPI Interface

FEATURES

High relative accuracy (INL): ±2 LSB maximum at 16 bits

Low drift 2.5 V reference: 2 ppm/°C typical

Tiny package: 3 mm × 3 mm, 16-lead

LFCSP TUE: ±0.1% of FSR maximum

Offset error: ±1.5 mV maximum

Gain error: ±0.1% of FSR maximum

High drive capability: 20 mA, 0.5 V from supply rails User-selectable gain of 1 or 2 (GAIN pin) Reset to zero scale or midscale (RSTSEL pin) 1.8 V logic compatibility 50 MHz SPI with readback or daisy chain Low glitch: 0.5 nV-sec Robust 4 kV HBM and 1.5 kV FICDM ESD ratings Low power: 3.3 mW at 3 V 2.7 V to 5.5 V power supply −40°C to +105°C temperature range APPLICATIONS Optical transceivers Base station power amplifiers Process control (PLC I/O cards) Industrial automation Data acquisition systems

GENERAL DESCRIPTION

The AD5689R/AD5687R members of the nanoDAC+™ family are low power, dual, 16-/12-bit buffered voltage output digital-to-analog converters (DACs). The devices include a 2.5 V, 2 ppm/°C internal reference (enabled by default) and a gain select pin giving a full-scale output of 2.5 V (gain = 1) or 5 V (gain = 2). The devices operate from a single 2.7 V to 5.5 V supply, are guaranteed monotonic by design, and exhibit less than 0.1% FSR gain error and 1.5 mV offset error performance. Both devices are available in a 3 mm × 3 mm LFCSP and a TSSOP package. The AD5689R/AD5687R also incorporate a power-on reset circuit and a RSTSEL pin that ensure that the DAC outputs power up to zero scale or midscale and remain there until a valid write takes place. Each part contains a per channel power-down feature that reduces the current consumption of the device to 4 µA at 3 V while in power-down mode. The AD5689R/AD5687R use a versatile serial peripheral interface (SPI) that operates at clock rates up to 50 MHz. and both devices contain a VLOGIC pin that is intended for 1.8 V/3 V/5 V logic.

PRODUCT HIGHLIGHTS

1. High Relative Accuracy (INL). AD5689R (16-bit): ±2 LSB maximum AD5687R (12-bit): ±1 LSB maximum

2. Low Drift 2.5 V On-Chip Reference. 2 ppm/°C typical temperature coefficient 5 ppm/°C maximum temperature coefficient

3. Two Package Options. 3 mm × 3 mm, 16-lead LFCSP 16-lead TSSOP

Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

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