Overview
The AD654JNZ, produced by Analog Devices Inc., is a monolithic voltage-to-frequency (V/F) converter. This integrated circuit combines an input amplifier, a precision oscillator system, and a high current output stage. It is designed to convert analog voltage inputs into corresponding frequency outputs, making it versatile for various applications such as analog-to-digital conversion, isolated signal transmission, and phase-locked loops. The AD654JNZ operates from a single supply voltage ranging from 5 V to 36 V and consumes a low quiescent current of 2.0 mA, making it energy-efficient and suitable for a wide range of environments.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Frequency Range | 0 to 500 kHz | kHz |
| Nonlinearity (fMAX = 250 kHz) | 0.06 to 0.1% | % |
| Input Voltage Range | ±30 V (full scale) | V |
| Supply Voltage | 5 V to 36 V | V |
| Quiescent Current | 2.0 mA | mA |
| Input Resistance | 250 MΩ | MΩ |
| Temperature Coefficient | ±50 ppm/°C | ppm/°C |
| Package Type | 8-lead mini-DIP, 8-lead SOIC |
Key Features
- High accuracy with a nonlinearity error of 0.06% to 0.1% for a 250 kHz full-scale frequency.
- Wide input voltage range, accommodating up to ±30 V full-scale input voltage.
- Low drift input amplifier with 4 µV/°C typical drift, suitable for small signal sources like thermocouples or strain gauges.
- High current output stage capable of driving up to 12 TTL loads, optocouplers, or long cables.
- Versatile open-collector output stage that can sink more than 10 mA with a saturation voltage less than 0.4 V.
- Simple setup requiring only an RC network to set the desired full-scale frequency and input voltage range.
Applications
- Analog-to-digital conversion when used with a microcomputer having an interval timer/event counter.
- Isolated signal transmission.
- Phase-locked loops.
- Tuning switched-capacitor filters.
- General voltage-to-frequency and frequency-to-voltage conversions).
Q & A
- What is the AD654JNZ used for?
The AD654JNZ is used as a voltage-to-frequency converter, converting analog voltage inputs into corresponding frequency outputs.
- What is the frequency range of the AD654JNZ?
The frequency range of the AD654JNZ is from 0 to 500 kHz.
- What is the input voltage range of the AD654JNZ?
The AD654JNZ can accommodate input voltages up to ±30 V full scale.
- What is the supply voltage range for the AD654JNZ?
The AD654JNZ operates from a single supply voltage ranging from 5 V to 36 V.
- How much quiescent current does the AD654JNZ consume?
The AD654JNZ consumes a quiescent current of 2.0 mA.
- What type of output does the AD654JNZ provide?
The AD654JNZ provides a square-wave output.
- How many TTL loads can the AD654JNZ drive?
The AD654JNZ can drive up to 12 TTL loads.
- What is the temperature coefficient of the AD654JNZ?
The temperature coefficient of the AD654JNZ is typically ±50 ppm/°C.
- In what packages is the AD654JNZ available?
The AD654JNZ is available in 8-lead mini-DIP and 8-lead SOIC packages.
- What are some common applications of the AD654JNZ?
Common applications include analog-to-digital conversion, isolated signal transmission, phase-locked loops, and tuning switched-capacitor filters.
