LTC2632CTS8-LZ12 Dual 12-Bit SPI DAC Precision Control 8-Lead TSOT-23 Integrated Circuit Chip

The LTC2632CTS8-LZ12 belongs to the LTC2632 series of dual 12-bit voltage output DACs and comes in an 8-lead TSOT-23 package. With a 2.5 V on-chip reference and an SPI port, the two channels cover precision control without extra gain or buffer stages.

On the LTC2632CTS8-LZ12 the internal reference holds 10 ppm per degree C, and the converter meets its 12-bit linearity limit. Noise for the LTC2632 is 0.75 mV peak to peak from 0.1 Hz to 200 kHz, and monotonic operation is guaranteed from 0 C to +70 C. At 2.5 V full scale one 12-bit code step is 0.61 mV, and the LTC2632CTS8-LZ12 holds that resolution over its rated range.

Data is written through the SPI port into latches, so a channel can be loaded and then released with a single update. The power-on reset state of the LTC2632CTS8-LZ12 can be selected as zero scale, midscale or high impedance, which defines the output before the first command. On the LTC2632CTS8-LZ12 the SPI port and latch structure keep precision control deterministic after every write.

Supply range for the LTC2632CTS8-LZ12 is 2.7 V to 5.5 V with 0.4 mA typical current at 3 V. The LTC2632 reference can also be driven externally when the DAC must track a shared system rail instead of its own 2.5 V source. With its 2.5 V span the LTC2632CTS8-LZ12 covers precision control without an external amplifier stage.

Every order of the LTC2632CTS8-LZ12, part of the LTC2632 dual DAC line, ships in 8-lead TSOT-23 packaging with full traceability, RoHS compliant and lead free, and samples plus volume pricing are available on request.

• Two 12-bit LTC2632 voltage output DAC channels
• 2.5 V full-scale output from the internal reference
• 10 ppm per degree C reference temperature coefficient
• Commercial grade linearity specification
• Low noise: 0.75 mV peak to peak from 0.1 Hz to 200 kHz
• Guaranteed monotonic from 0 C to +70 C
• Selectable internal or external reference
• 2.7 V to 5.5 V supply range
• Low power: 0.4 mA at 3 V
• Power-on reset to zero scale, midscale or high impedance
• Double-buffered data latches
• SPI compatible serial interface
• 8-lead TSOT-23 package

• Portable instrumentation
• Digital gain and offset adjustment
• Programmable reference levels
• Sensor calibration
• Battery powered control systems

The LTC2632CTS8-LZ12 addresses precision control where two 12-bit channels and a 2.5 V reference must fit a TSOT-23 outline.

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The parts listed below are stocked in parallel with this series and drawn from the same supply lines.