Product Details
●The AD7612 is a 16-bit charge redistribution successive approximation register (SAR), architecture analog-to-digital converter (ADC) fabricated on Analog Devices, Inc."s _i_CMOS 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.
●Product Highlights
● 1. Programmable input range and mode selection. Pins or serial port for selecting input range/mode select.
● 2. Fast throughput. In warp mode, the AD7612 is 750 kSPS.
● 3. Superior Linearity. No missing 16-bit code. ±1.5 LSB max INL.
● 4. Internal Reference. 5 V internal reference with a typical drift of ±3 ppm/°C and an on-chip temperature sensor.
● 5. Serial or Parallel Interface. Versatile parallel (16- or 8-bit bus) or 2-wire serial interface arrangement compatible with 3.3 V or 5 V logic.
●Applications
● Process control
● Medical instruments
● High speed data acquisition
● Digital signal processing
● Instrumentation
● Spectrum analysis
● ATE
●### Features and Benefits
● Multiple pins/software programmable input ranges: 5 V, 10 V, ±5 V, ±10 V
● Pins or serial SPI®-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 minimum (5 V) @ 2 kHz, 94 dB typical (±10 V) @ 2 kHz
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● THD: −107 dB typical
● _i_CMOS™ 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
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