LTC2412 Datasheet | Linear Technology

LTC2412 2-Channel Differential Input 24-Bit No Latency ∆Σ ADC Features nn 2-Channel Differential Input with Automatic Channel Selection (Ping-Pong) nn Low Supply Current: 200µA, 4µA in Autosleep nn Differential Input and Differential Reference with GND to VCC mon Mode Range nn 2ppm INL, No Missing Codes nn 2.5ppm Full-Scale Error and 0.1ppm Offset nn 0.16ppm Noise, 22.5 Effective Number of Bits nn No Latency: Digital Filter Settles in a Single Cycle and Each Channel Conversion is Accurate nn Internal Oscillator- No External ponents Re- quired nn 110d B Min, 50Hz or 60Hz Notch Filter nn Narrow SSOP-16 Package nn Single Supply 2.7V to 5.5V Operation APPLICATIONS nn Direct Sensor Digitizer nn Weight Scales nn Direct Temperature Measurement nn Gas Analyzers nn Strain-Gage Transducers nn Instrumentation nn Data Acquisition nn Industrial Process Control nn 6-Digit DVMs DESCRIPTION The LTC®2412 is a 2-channel differential input micropower 24-bit No Latency ∆Σ™ analog-to-digital converter with an integrated oscillator. It provides 2ppm INL and 0.16ppm RMS noise over the entire supply range. The two differential channels are converted alternately with channel ID included in the conversion results. It uses delta-sigma technology and provides single conversion settling of the digital filter. Through a single pin, the LTC2412 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 internal oscillator requires no external frequency setting ponents. The converter accepts 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. The DC mon mode input rejection...