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Description

The AD5302 / AD5312 / AD5322 are dual 8-, 10-, and 12-bit buffered voltage output DACs in a 10-lead MSOP that operate from a single 2.5 V to 5.5 V supply, consuming 230 μA at 3 V. Their on-chip output amplifiers allow the outputs to swing rail-to-rail with a slew rate of 0.7 V/μs. The devices utilize a versatile 3-wire serial interface that operates at clock rates up to 30 MHz and is compatible with standard SPI®,QSPI™, MICROWIRE™, and DSP interface standards.

Features 

1. AD5302: Two 8-bit buffered DACs in 1 package
A version: ±1 LSB INL, B version: ±0.5 LSB INL

2. AD5312: Two 10-bit buffered DACs in 1 package
A version: ±4 LSB INL, B version: ±2 LSB INL

3. AD5322: Two 12-bit buffered DACs in 1 package
A version: ±16 LSB INL, B version: ±8 LSB INL

4. Micropower operation: 300 μA @ 5 V (including reference current)
5. Power-down to 200 nA @ 5 V, 50 nA @ 3 V 2.5 V to 5.5 V power supply
6. Double-buffered input logic
7. Guaranteed monotonic by design over all codes
8. Buffered/Unbuffered reference input options
9. Simultaneous update of DAC outputs via LDAC
10. Low power serial interface with Schmitt-triggered inputs
11. On-chip rail-to-rail output buffer amplifiers
12. Qualified for automotive applications

Applications :

1. Portable battery-powered instruments
2. Digital gain and offset adjustment
3. Programmable voltage and current sources
4. Programmable attenuators