AD7763 Rev.A is a 24-Bit, 625 kSPS, 109 dB Sigma-Delta ADC with On-Chip Buffers, Serial Interface.
The AD7763 high‑performance 24‑bit sigma‑delta analog‑to‑digital converter delivers up to 625 kSPS fully filtered output with a dynamic range of 119 dB (typ 120.5 dB) and low noise (112 dB SNR). It integrates a differential input buffer, programmable FIR filter, over‑range flag, and digital offset/gain correction, simplifying board design.
Designed for data‑acquisition systems, vibration analysis and instrumentation, the device operates from –40 °C to +85 °C, supports both normal (955.5 mW) and low‑power (651 mW) modes, and is available in an exposed‑paddle 64‑lead TQFP package.
| Dynamic Range | 119 dB min (120.5 dB typ) |
|---|---|
| Signal‑to‑Noise Ratio (SNR) | 112 dB typ |
| Spurious‑Free Dynamic Range (SFDR) | 126 dBc typ |
| Total Harmonic Distortion (THD) | -105 dB typ |
| Resolution | 24 Bits |
| Normal‑mode Power Dissipation | 955.5 mW max |
| Low‑power Mode Dissipation | 651 mW max |
| Operating Temperature Range | -40 °C to +85 °C |
| Input Voltage Range (4 V reference) | +3.2 V differential‑biased around 2 V common mode |
| Package | Exposed paddle, 64‑lead TQFP_EP |
The AD7763 can output up to 625 kHz fully filtered data words.
In normal mode the device dissipates up to 955.5 mW, while in low‑power mode it consumes up to 651 mW.
With a 4 V reference the differential input range is +3.2 V biased around a 2 V common‑mode voltage.
The AD7763 is supplied in an exposed‑paddle 64‑lead TQFP_EP package.