LTC2435 Datasheet | Linear Technology

LTC2435/LTC2435-1 Features 20-Bit No Latency ∆∑™ ADCs with Differential Input and Differential Reference Description n 2× Speed Up Version of the LTC2430: 15Hz Output Rate, 60Hz Notch- LTC2435; 13.75Hz Output Rate, Simultaneous 50Hz/60Hz Notch- LTC2435-1 n Differential Input and Differential Reference with GND to VCC mon Mode Range n 3ppm INL, No Missing Codes n 10ppm Gain Error n 0.8ppm Noise n Single Conversion Settling Time for Multiplexed Applications n Internal Oscillator- No External ponents Required n Single Supply 2.7V to 5.5V Operation n Low Supply Current (200µA,4µA in Auto Sleep) n20-Bit ADC in Narrow SSOP-16 Package (SO-8 Footprint) Applications n Direct Sensor Digitizer n Weight Scales n Direct Temperature Measurement n Gas Analyzers n Strain Gage Transducers n Instrumentation n Data Acquisition n Industrial Process Control n6-Digit DVMs The LTC®2435/LTC2435-1 are 2.7V to 5.5V micropower 20‑bit differential ∆∑ analog to digital converters with integrated oscillator, 3ppm INL and 0.8ppm RMS noise. They use delta-sigma technology and provide single cycle settling time for multiplexed applications. Through a single pin, the LTC2435 can be configured for better than 110d B input differential mode rejection at 50Hz or 60Hz ± 2%, or it can be driven by an external oscillator for a user defined rejection frequency. The LTC2435-1 can be configured for better than 87d B input differential mode rejection over the range of 49Hz to 61.2Hz (50Hz and 60Hz ±2% simultaneously). The internal oscillator requires no external frequency setting ponents. The converters accept any external differential reference voltage from 0.1V to VCC for flexible ratiometric and remote sensing measurement configurations. The full-scale differential input range is from - 0.5VREF to 0.5VREF . The reference mon mode voltage, VREFCM, and the input mon mode voltage, VINCM, may be independently set anywhere within the GND to VCC range of the LTC2435/ LTC2435-1....