The AD7766 is a high-performance, low-power, 24-bit ADC from Analog Devices that operates at up to 128 kSPS. The device uses an oversampled successive approximation (SAR) architecture and features a 115.5 dB dynamic range, a 109.5 dB dynamic range, and a -112 dB THD. Additionally, the AD7766 has a low power consumption of 8.5 mW, 10.5 mW, and 15 mW, a 24-bit no missing code (NMC) accuracy, a 15 nV/°C zero error drift, and a 0.4 ppm/°C gain error drift.
The AD7766 family (AD7766, AD7766‑1, AD7766‑2) are high‑performance 24‑bit oversampled SAR analog‑to‑digital converters. They provide low power consumption (8.5 mW‑15 mW) and operate from a 2.5 V supply with a temperature range of –40 °C to +105 °C.
Key features include an on‑chip FIR filter with linear phase response, synchronization (SYNC/PD) and daisy‑chain capability, and flexible logic‑level options (1.8 V‑3.6 V). The devices are supplied in a 16‑lead TSSOP package and are suited for ultra‑low‑power data‑acquisition systems, medical instrumentation, and vibration analysis.
| Resolution | 24 bits, no missing codes |
|---|---|
| Dynamic Range (AD7766) | 109.5 dB |
| Signal‑to‑Noise Ratio (AD7766‑2) | 115.5 dB |
| Power Consumption (128 kSPS) | 15 mW |
| Supply Voltage | 2.5 V (logic 1.8 V‑3.6 V options) |
| Operating Temperature Range | –40 °C to +105 °C |
The AD7766 can output data at 128 kSPS, the AD7766‑1 at 64 kSPS, and the AD7766‑2 at 32 kSPS.
At 128 kSPS the AD7766 consumes about 15 mW of power.
The device can operate with logic levels of 1.8 V, 2.5 V, 3 V, or 3.6 V.
The AD7766 family is rated for –40 °C to +105 °C.