AD7612BSTZ

The AD7612 is a 16-bit charge redistribution successive approximation register (SAR), architecture analog-to-digital converter (ADC) fabricated on iCMOS high voltage process. The device is configured through hardware or via a dedicated write only serial configuration port for input range and operating mode. The AD7612 contains a high speed 16-bit sampling ADC, an internal conversion clock, an internal reference (and buffer), error correction circuits, and both serial and parallel system interface ports. A falling edge on CNVST samples the analog input on IN+ with respect to a ground sense, IN−. The AD7612 features four different analog input ranges and three different sampling modes: warp mode for the fastest throughput, normal mode for the fastest asynchronous throughput, and impulse mode where power consumption is scaled linearly with throughput. Operation is specified from -40°C to +85°C.

Applications

• Process control
• Medical instruments
• High speed data acquisition
• Digital signal processing
• Instrumentation
• Spectrum analysis
• ATE

Key features

• Multiple pins/software programmable input ranges: 5 V, 10 V, ±5 V, ±10 V
• Pins or serial -compatible input ranges/mode selection
• Throughput 750 kSPS (warp mode) 600 kSPS (normal mode) 500 kSPS (impulse mode)
• INL: ±0.75 LSB typical, ±1.5 LSB maximum (±23 ppm of FSR)
• 16-bit resolution with no missing codes
• SNR: 92 dB minimum (5 V) @ 2 kHz, 94 dB typical (±10 V) @ 2 kHz
• THD: −107 dB typical
• iCMOS process technology
• 5 V internal reference: typical drift 3 ppm/°C; TEMP output
• No pipeline delay (SAR architecture)
• Parallel (16- or 8-bit bus) and serial 5 V/3.3 V interface
• SPI-/QSPI-/MICROWIRE-/DSP-compatible
• Power dissipation: 190 mW @ 750 kSPS
• Pb-free, 48-lead LQFP and LFCSP (7 mm×7 mm packages)