LTC2500-32 Datasheet | Linear Technology

LTC2500-32 32-Bit Oversampling ADC with Configurable Digital Filter Features nn ±0.5ppm INL (Typ) nn 104d B SNR (Typ) at 1Msps nn 148d B Dynamic Range (Typ) at 61sps nn Guaranteed 32-Bit No Missing Codes nn Configurable Digital Filter with Synchronization nn Relaxed Anti-Aliasing Filter Requirements nn Dual Output 32-Bit SAR ADC nn 32-Bit Digitally Filtered Low Noise Output nn 24-Bit Differential + 7-Bit mon Mode 1Msps Output with Overrange Detection nn Wide Input mon Mode Range nn Guaranteed Operation to 85°C nn 1.8V to 5V SPI-patible Serial I/O nn Low Power: 24m W at 1Msps nn 24-Lead 7mm × 4mm DFN Packages APPLICATIONS nn Seismology nn Energy Exploration nn Automatic Test Equipment nn High Accuracy Instrumentation DESCRIPTION The LTC®2500-32 is a low noise, low power, high performance 32-bit ADC with an integrated configurable digital filter. Operating from a single 2.5V supply, the LTC2500-32 Features a fully differential input range up to ±VREF, with VREF ranging from 2.5V to 5.1V. The LTC2500-32 supports a wide mon mode range from 0V to VREF simplifying analog signal conditioning requirements. The LTC2500-32 simultaneously provides two output codes: (1) a 32-bit digitally filtered high precision low noise code, and (2) a 32-bit no latency posite code. The configurable digital filter reduces measurement noise by lowpass filtering and downsampling the stream of data from the SAR ADC core, giving the 32-bit filtered output code. The 32-bit posite code consists of an overrange detection bit, a 24-bit code representing the differential input voltage and a 7-bit code representing the mon mode input voltage. The 32-bit posite code is available each conversion cycle, with no cycle of latency. The digital filter is highly configurable through the SPIpatible interface and Features many distinct filter types that suit a variety of applications. The digital lowpass filter relaxes the requirements for analog anti-aliasing. Multiple LTC2500-32...