LTC2439-1IGN#PBF

LTC®2439-1 is a 16-channel (8-differential) micropower 16bit ∆Σ analogue-to-digital converter. It uses delta-sigma technology and provides single cycle settling time for multiplexed applications. Through a single pin, the LTC2439-1 can be configured for better than 87dB differential mode rejection at 50Hz and 60Hz ±2%, or it can be driven by an external oscillator for a user-defined rejection frequency. The internal oscillator requires no external frequency setting components. The LTC2439-1 accepts any external differential reference voltage from 0.1V to VCC for flexible ratiometric and remote sensing measurement applications. The full-scale bipolar input range is from –0.5VREF to 0.5VREF. Application includes direct sensor digitizer, weight scales, direct temperature measurement, gas analysers, strain gauge transducers, instrumentation, data acquisition, industrial process control.

• Low supply current (200µA, 4µA in auto sleep)
• Rail-to-rail differential input/reference
• 16bit no missing codes, 1µV RMS noise, 16-ENOBS independent of VREF
• Very low transition noise: less than 0.02LSB
• Operates with a reference as low as 100mV with 1.5µV LSB step size
• Guaranteed modulator stability and lock-up immunity for any input and reference conditions
• Single supply 2.7V to 5.5V operation range
• Internal oscillator no external components required
• 87dB min, 50Hz and 60Hz simultaneous notch filter
• 28 lead plastic SSOP package, operating temperature range from -40°C to 85°C

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party