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Smallest current output digital-to-analog converter delivers 14-bit accuracy

Norwood, MA (February 18, 2004) — Analog Devices is optimizing high-performance applications by delivering the smallest current output D/A (digital-to-analog) converters with up to 14-bit resolution. Featuring compact SOT-23 (small outline transistor) packaging and multiplying bandwidths in excess of 10 MHz, the new D/A converter family enables smaller and higher density industrial, instrumentation, medical, automotive and communications applications.

The AD545x devices are manufactured on ADI's high-performance, submicron CMOS process for high accuracy, with 0.25 LSB INL at 8 bits and 0.5 LSB at 12 bits. Each part operates from a single 2.5-V to 5.5-V power supply and can handle +/”10-V signals on the reference input. High accuracy is maintained over an extremely wide operating temperature range of “40 to 125 degrees C.

The AD545x family's three-wire serial port operates at clock rates up to 50 MHz and is compatible with most standard SPI, QSPI, MICROWIRE and DSP interfaces. On power-up the device's internal shift register and latches are filled with zeros, and its output is set to zero scale.

The AD545x family is ideal for use in high-frequency systems, such as automotive radar, and general-purpose ac applications, such as chemical or substance analysis, which demand low-cost and accurate solutions. High-performance DC applications, such as set-point control, bias adjust, ATE level setting, programmable reference, and gain/attenuation control, are also possible with the very high accuracy the AD545x family provides. The higher resolution parts are best suited for waveform generators, programmable filters, and digitally controlled calibration, while the lower resolution parts are designed for applications such as composite video, ultrasound, generators and radar.

The AD545x family includes the AD5450 (8-bit), AD5451 (10-bit), AD5452 (12-bit), and the AD5453 (14-bit). Each converter is available in an 8-lead thin SOT-23 package. They are priced at $1.97, $2.61, $3.90, and $4.99, respectively, per unit in 1,000-piece quantities. Samples are available now with full production in July 2004.

Data sheet for AD5450, 51, 52, 53

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