Analog Devices AD7621
The AD7621 is a 16-bit, 3 MSPS, charge redistribution SAR, fully differential analog-to-digital converter (ADC) that operates from a single 2.5 V power supply. It 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. It features two very high sampling rate modes (wideband warp and warp), a fast mode (normal) for asynchronous rate applications, and a reduced power mode (impulse) for low power applications where the power is scaled with the throughput.| Part No. | AD7621 |
|---|---|
| Datasheet | AD7621 Download |
| Manufacturer |  Analog Devices |
| Description | 3 MSPS PulSAR ADC |
| Buy | Stock & Price |
FEATURES
Throughput 3 MSPS (wideband warp and warp mode) 2 MSPS (normal mode) 1.25 MSPS (impulse mode) 2.048 V internal reference Differential input range: ±VREF (VREF up to 2.5 V) INL: ±2 LSB maximum, ±1 LSB typical 16-bit resolution with no missing codes SINAD: 89 dB typical @ 100 kHz THD: −101 dB typical @ 100 kHz No pipeline delay (SAR architecture) Parallel (16- or 8-bit bus) and serial 5 V/3.3 V/2.5 V interface SPI®-/QSPI™-/MICROWIRE™-/DSP-compatible 2.5 V single-supply operation Power dissipation: 65 mW typical @ 3 MSPS 48-lead LQFP and 48-lead LFCSP packages Speed upgrade of the AD7677APPLICATIONS
Medical instruments High speed data acquisition Digital signal processing Communications Instrumentation Spectrum analysis ATE FUNCTIONAL BLOCK DIAGRAM TEMP REFBUFIN REF REFGND DVDD DGND AGND AVDD IN+ IN– PDREF PDBUF PD RESET REF REF AMP SWITCHED CAP DAC AD7621 SERIAL PORT 16 PARALLEL INTERFACE CLOCK CONTROL LOGIC AND CALIBRATION CIRCUITRY OVDD OGND D[15:0] SER/PAR BUSY RD CS OB/2C BYTESWAP 04565-001 WARP IMPULSE CNVST Figure 1.
