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LTC2704 - Quad 12-, 14- and 16-Bit Voltage Output SoftSpan DACs with Readback

The LTC2704-16/LTC2704-14/LTC2704-12 are serial input, 12-, 14- or 16-bit, voltage output SoftSpan™ DACs that operate from 3V to 5V logic and ±5V to ±15V analog supplies. SoftSpan offers six output spans—two unipolar and four bipolar—fully programmable through the 3-wire SPI serial interface. INL is accurate to 1LSB (2LSB for the LTC2704-16). DNL is accurate to 1LSB for all versions.

Readback commands allow verification of any on-chip register in just one 24- or 32- bit instruction cycle. All other commands produce a “rolling readback” response from the LTC2704, dramatically reducing the needed number of instruction cycles.

A Sleep command allows any combination of DACs to be powered down. There is also a reset flag and an offset adjustment pin for each channel.

Features Six Programmable Output Ranges: Unipolar: 0V to 5V, 0V to 10V Bipolar: ±5V, ±10V, ±2.5V, –2.5V to 7.5V Serial Readback of All On-Chip Registers 1LSB INL and DNL Over the Industrial Temperature Range (LTC2704-14/LTC2704-12) Force/Sense Outputs Enable Remote Sensing Glitch Impulse: < 2nV-sec Outputs Drive ±5mA Pin Compatible 12-, 14- and 16-Bit Parts Power-On and Clear to Zero Volts 44-Lead SSOP Package Typical Application

Applications Process Control and Industrial Automation Direct Digital Waveform Generation Software Controlled Gain Adjustment Automated Test Equipment Packaging

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