250 kSPS, 12-Bit Impedance Converter, Network Analyzer Data Sheet
The AD5934 is a high‑precision 12‑bit impedance converter that combines an on‑board frequency generator with a 250 kSPS ADC. It offers programmable peak‑to‑peak excitation voltages, a 27‑bit frequency resolution, and a built‑in DSP for DFT processing, enabling accurate magnitude and phase measurements across a wide frequency range.
The device operates from 2.7 V to 5.5 V, supports an impedance range of 1 kΩ to 10 MΩ (with optional circuitry for 100 Ω‑1 kΩ), and provides up to 0.5 % total system accuracy. It is supplied in a 16‑lead SSOP package and includes detailed pin configurations, timing characteristics, and layout guidelines for optimal performance.
| Impedance Range | 1 kΩ – 10 MΩ |
|---|---|
| Total System Accuracy | 0.5 % |
| Output Frequency Range | 1 Hz – 100 kHz |
| Output Frequency Resolution | <0.1 Hz |
| Supply Voltage | 2.7 V – 5.5 V |
| Power Consumption (Normal Mode) | 10 mA – 15 mA at 3.3 V |
| Signal‑to‑Noise Ratio | 60 dB |
| Total Harmonic Distortion | –52 dB |
| Operating Temperature Range | –40 °C to +125 °C |
| Package | 16‑Lead Shrink Small Outline Package (SSOP) |
The AD5934 operates from 2.7 V to 5.5 V.
It can measure impedances from 1 kΩ up to 10 MΩ, with optional circuitry for 100 Ω to 1 kΩ.
The device can generate output frequencies up to 100 kHz.
The total system accuracy is specified as 0.5 %.