Tiny 14-bit ADC guaranteed up to 125°C

13 June 2007 Analogue, Mixed Signal, LSI

Linear Technology's LTC1403AH is a 14-bit, 2,8 Msps SAR ADC guaranteed over the -40°C to +125°C temperature range. It operates from a single 2,7 V to 3,6 V supply, draws only 14 mW at 2,8 Msps and is available in a tiny 10-lead MSOP package. This ADC includes an internal reference, measures a single differential 0 V to 2,5 V input signal, and communicates via a simple 3-wire serial interface. The LTC1403AH features 5 MHz full linear bandwidth and achieves 76,3 dB SINAD and -90 dB SFDR at 100 kHz. While measuring 0 V to 2,5 V unipolar inputs differentially, the device's 80 dB common mode rejection ratio allows users to reduce the effects of ground loops and common mode noise. When the ADC is not converting, power dissipation can be reduced to 3 mW in Nap mode, with the internal 2,5 V reference remaining active, and only 6 μW with all internal circuitry powered down in Sleep mode.

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