AD7691-EP - Analog Devices

AD7691-EP 250 kSPS PulSAR Differential ADC

The AD7691-EP is an 18-bit, charge redistribution, successive approximation, analog-to-digital converter (ADC) that operates from a single power supply, VDD, between 2.3 V and 5 V. It contains a low power, high speed, 18-bit sampling ADC with no missing codes, an internal conversion clock, and a versatile serial interface port. On the CNV rising edge, it sam.

Features

18-bit resolution with no missing codes Throughput: 250 kSPS INL ±0.75 LSB typical ±1.5 LSB minimum/maximum at −40°C to +85°C −2.7 LSB/+2 LSB minimum/maximum at −55°C to +105°C Dynamic range: 102 dB typical Oversampled dynamic range: 125 dB at 1 kSPS Noise-free code resolution: 20 bits at 1 kSPS Effective resolution: 22.7 bits at 1 kSPS SINAD: 101 dB typical at fIN = 1 kHz, VREF = 5 V THD: −125 dB typical at fIN = 1 kHz, VREF = 5 V True differential analog input range: ±VREF 0 V to VREF with VREF up to VDD on both inputs No pipeline delay Single-supply 2.3 V to 5 V operation with 1.8 V/2.5 V/3.