AD5313ARUZ

Digital To Analog Converters Overview

The AD5313ARUZ is a dual 10-bit buffered voltage-output digital-to-analog converter (DAC) in a 16-lead TSSOP package. It operates from a single 2.5 V to 5.5 V supply, consuming 230 μA at 3 V and reducing to 200 nA in power-down mode. The device features on-chip rail-to-rail output amplifiers with a slew rate of 0.7 V/μs. It utilizes a versatile 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards, supporting clock rates up to 30 MHz. Key specifications include ±4 LSB INL for the A version, 9 μs typical settling time, and simultaneous update capability via the LDAC pin.

Digital To Analog Converters Feature Summary

• Dual 10-bit resolution with resistor-string architecture ensuring guaranteed monotonicity by design.
• On-chip rail-to-rail output buffer amplifiers allowing full-scale swing from 0 V to VDD.
• Micropower operation: 230 μA at 3 V; power-down current reduces to 50 nA at 3 V.
• Versatile 3-wire serial interface compatible with standard SPI, QSPI, MICROWIRE, and DSP modes.

Digital To Analog Converters Applications

• Portable battery-powered instruments
• Digital gain and offset adjustment circuits
• Programmable voltage and current sources
• Programmable attenuators

Digital To Analog Converters Procurement Notes

Verify the specific suffix against the manufacturer's ordering guide to confirm the temperature range and packaging type. The 'A' designation indicates an INL specification of ±4 LSB, whereas 'B' denotes ±2 LSB. Ensure the selected variant matches the required accuracy for the application. Confirm RoHS compliance status as per the latest datasheet revision.

Digital To Analog Converters Selection Notes

Select the AD5313ARUZ when dual-channel 10-bit resolution is required with low power consumption. The A-version offers ±4 LSB INL, suitable for general-purpose applications. Consider the external reference configuration options; the BUF pins allow selection between buffered and unbuffered reference inputs. Verify that the 30 MHz serial clock speed meets the system timing requirements.

Digital To Analog Converters Part Context

The AD5313ARUZ belongs to the AD5303/AD5313/AD5323 family of nanoDACs. This series provides dual buffered voltage outputs in a compact 16-lead TSSOP package. The AD5313 specifically targets 10-bit resolution needs, positioned between the 8-bit AD5303 and the 12-bit AD5323. All variants share similar power characteristics and interface protocols.

Digital To Analog Converters Replacement Considerations

The AD5313BRUZ is a direct functional substitute within the same package, offering improved linearity with ±2 LSB INL (B version). For higher resolution, the AD5323ARUZ provides 12-bit performance. For lower channel counts or resolutions, the AD5303ARUZ (8-bit) may be considered if cost or pin count is a constraint, though it shares the same footprint.

Digital To Analog Converters FAQ

What is the maximum serial clock frequency for the AD5313ARUZ?

The serial clock input (SCLK) supports data transfer rates up to 30 MHz.

How does the AD5313ARUZ handle power-on reset conditions?

The device incorporates a power-on reset circuit that ensures both DAC outputs power up to 0 V and remain there until a valid write operation occurs.

Can the reference inputs be configured differently for each DAC channel?

Yes, each DAC has a separate reference input pin (VREFA and VREFB). The state of the BUF A and BUF B control pins determines whether each reference input is buffered or unbuffered independently.