LTC2378IDE-20#PBF

LTC®2378-20 is a low noise, low power, high speed 20bit successive approximation register (SAR) ADC. Operating from a 2.5V supply, this has a ±VREF fully differential input range with VREF ranging from 2.5 to 5.1V. This consumes only 21mW and achieves ±2ppm INL maximum, no missing codes at 20bits with 104dB SNR. The fast 1Msps throughput with no cycle latency makes this ideally suited for a wide variety of high speed applications. An internal oscillator sets the conversion time, easing external timing considerations. This automatically powers down between conversions, leading to reduced power dissipation that scales with the sampling rate. This features a unique digital gain compression (DGC) function, which eliminates the driver amplifier’s negative supply while preserving full resolution of the ADC. Typical applications are medical imaging, high speed data acquisition, portable or compact instrumentation, industrial process control, low power battery-operated instrumentation, ATE.

• 1Msps throughput rate, ±0.5ppm INL (typical)
• Guaranteed 20bit no missing codes
• Digital gain compression (DGC), fully differential input range ±VREF
• No pipeline delay, no cycle latency, internal conversion clock
• SPI-compatible serial I/O with daisy-chain mode
• Absolute input range (IN+) from –0.1 to VREF + 0.1V
• Analog input leakage current is 0.01µA typical
• Input common mode rejection ratio is 86dB (fIN=500KHz)
• 16-lead plastic DFN package
• Temperature rating range from -40°C to 85°C

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