Key facts
- Brand
- Analog Devices
- Model
- AD654
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-05-09
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Analog Devices AD654 Voltage-to-Frequency Converter Datasheet
The AD654 combines an input amplifier, a precision oscillator, and a high‑current output stage in a single monolithic IC. It requires only a single RC network to set full‑scale frequency and input voltage, and can operate from a single 5 V to 36 V supply or dual supplies.
The device provides a square‑wave output capable of sinking over 10 mA, features a 250 MΩ input resistance, low offset (≤1 mV), and low quiescent current (~2 mA). Detailed specifications, circuit diagrams, and application examples such as temperature‑to‑frequency conversion and optoisolator coupling are included.
Analog Devices AD654 specifications
| Full‑Scale Frequency Range | 0 – 500 kHz |
|---|---|
| Input Resistance (Non‑inverting) | 250 MΩ |
| Input Bias Current (typ) | 30 nA |
| Quiescent Current (typ) | 2.0 mA |
| Supply Voltage (single supply) | 4.5 V to 36 V |
| Supply Voltage (dual supply) | +18 V to –18 V |
| Operating Temperature Range | -40 °C to +85 °C |
| Maximum Output Sink Current | 10 mA (typ) |
Source: Analog Devices AD654 Voltage-to-Frequency Converter Datasheet
All Analog Devices AD654 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the full‑scale frequency range of the AD654?
The AD654 can generate frequencies from 0 up to 500 kHz at full scale.
From: Analog Devices AD654 Voltage-to-Frequency Converter Datasheet
What supply voltage ranges does the AD654 support?
It operates from a single supply of 4.5 V to 36 V or from dual supplies of ±18 V.
From: Analog Devices AD654 Voltage-to-Frequency Converter Datasheet
How much quiescent current does the AD654 draw?
The device draws about 2.0 mA quiescent current, ranging from 1.5 mA at 5 V to 2.5 mA at 30 V.
From: Analog Devices AD654 Voltage-to-Frequency Converter Datasheet
What is the full‑scale frequency capability of the AD654?
It can generate frequencies up to 500 kHz at full scale.
From: Analog Devices AD654 Voltage-to-Frequency Converter Datasheet