LTC2688HUJ-16#PBF

LTC2688HUJ-16#PBF is a 16-channel, 16bit, ±15V digital-to-analogue converter (DAC) with an integrated precision reference. The LTC2688 is guaranteed monotonic and has built-in rail-to-rail output buffers that can source or sink up to 20mA. This SoftSpan™ DAC offers five output ranges up to ±15V. The range of each channel is independently programmable. Three toggle pins support Input Register A and input register B toggle or sinusoidal dither at multiple frequencies. An analogue multiplexer simplifies measurement of pin voltages, load currents, and junction temperature. Programmable offset and gain registers improve the accuracy of the DAC outputs. The serial peripheral interface (SPI) and MICROWIRE™-compatible, 3-wire serial interface operates on logic levels as low as 1.71V and clock rates up to 50MHz. Applications include optical networking, instrumentation, data acquisition, automatic test equipment, process control and industrial automation.

• A/B toggle or sinusoidal dither using up to 3 toggle pins
• Multiplexer for output voltage and load current sense
• Outputs drive ±20mA guaranteed
• Differential nonlinearity is ±1LSB maximum at (TA = 25°C)
• Integral nonlinearity is ±3LSB maximum at (TA = 25°C)
• Gain temperature coefficient is 2ppm/°C typical at (TA = 25°C)
• Output voltage noise density is 32nV/√Hz typ at (TA = 25°C)
• Power supply rejection is -80dB typ at (VCC = 5V ±5%, TA = 25°C)
• VCC supply current is 21.9µA typ at (VCC = 5V; 0V to 5V range)
• Operating temperature range from -40°C to +125°C, 40-lead LFCSP package

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