The AD7765 is a high performance, 24-bit sigma-delta (Σ-Δ) analog-to-digital converter (ADC) with 115 dB dynamic range and 156 kHz maximum output data rate. It features a fully differential modulator input, on-chip differential amplifier, on-chip reference buffer, and full band low-pass filter. The AD7765 also provides a low power mode, flexible SPI interface, overrange alert pin, digital gain correction registers, and power-down mode. It is suitable for applications such as data acquisition systems, vibration analysis, and instrumentation.
The AD7765 is a high‑performance 24‑bit sigma‑delta analog‑to‑digital converter. It provides a dynamic range of 112 dB at a 156 kSPS output rate, on‑chip differential amplifiers, selectable oversampling (128× or 256×), and a low‑power mode that reduces dissipation while maintaining performance.
Typical applications include data‑acquisition systems, vibration analysis and instrumentation. The device is supplied in a 28‑lead TSSOP package and operates over an industrial temperature range of –40 °C to +85 °C.
| Dynamic Range (156 kSPS) | 112 dB |
|---|---|
| Supply Voltage (AVDD) | 5 V |
| Package | 28‑lead TSSOP |
| Operating Temperature Range | –40 °C to +85 °C |
The device can output data at up to 156.25 kSPS when using a 128× decimation rate.
Multiple devices can be synchronized using the SYNC pin and by daisy‑chaining them.
With a 4 V reference the differential input range is ±3.2768 V (≈+3.2768 V differential) centered at a common‑mode of 2.048 V.