LTC2412

Supply Voltage (VCC) to GND ...........................0.3V to 7V
Analog Input Voltage
to GND .................................... .......0.3V to (VCC + 0.3V)
Reference Input Voltage
to GND ........................................... 0.3V to (VCC + 0.3V)
Digital Input Voltage to GND ........... 0.3V to (VCC + 0.3V)
Digital Output Voltage to GND ..... ...0.3V to (VCC + 0.3V)
Operating Temperature Range
LTC2412C ..................................................... 0°C to 70°C
LTC2412I.................................................. 40°C to 85°C
Storage Temperature Range ................. 65°C to 150°C
Lead Temperature (Soldering, 10 sec)..................... 300°C


Description

The LTC®2412 is a 2-channel differential input micropower 24-bit No Latency DSTM 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 110dB 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 components. 

The converter of LTC2412 accepts any external differential reference voltage from 0.1V to VCC for flexible ratiometric and remote sensing measurement configurations. The fullscale differential input range is from 0.5VREF to 0.5VREF. The reference common mode voltage, VREFCM, and the input common mode voltage, VINCM, may be independently set anywhere within the GND to VCC.

The DC common mode input rejection is better than 140dB. The LTC2412 communicates through a flexible 3-wire digital interface which is compatible with SPI and MICROWIRETM protocols. , LTC and LT are registered trademarks of Linear Technology Corporation. No Latency DS is a trademark of Linear Technology Corporation. MICROWIRE is a trademark of National Semiconductor Corporation. Total Unadjusted Error vs Input