Overview
The AD654JN, produced by Analog Devices Inc., is a high-performance, low-cost monolithic voltage-to-frequency (V/F) and frequency-to-voltage (F/V) converter. This component is designed to offer excellent linearity, low drift, and stable operation over a wide range of operating conditions. It is packaged in both an 8-lead mini-DIP and an 8-lead SOIC package, making it versatile for various circuit designs. The AD654JN is suitable for applications requiring precise voltage-to-frequency conversion, such as industrial process control, instrumentation, and data acquisition systems.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Frequency Range | 0 | - | 500 | kHz |
| Nonlinearity (fMAX = 250 kHz) | 0.06 | 0.1 | - | % |
| Input Voltage Range | -30 | - | 30 | V |
| Supply Voltage | 4.5 | - | 36 | V |
| Quiescent Current | - | 2.0 | 2.5 | mA |
| Input Resistance | - | 250 | - | MΩ |
| Temperature Coefficient | - | ±50 | - | ppm/°C |
| Output Current (Open-Collector) | - | - | 10 | mA |
Key Features
- High linearity and low drift, making it suitable for high-precision applications.
- Operates on a single power supply from +5 V to +36 V, with low quiescent current of 2.0 mA to 2.5 mA.
- Compact packaging in 8-lead mini-DIP and 8-lead SOIC, facilitating easy integration into various circuit designs.
- A single RC network is required to set the desired full-scale frequency and input voltage range, up to 500 kHz and ±30 V respectively.
- Versatile open-collector output stage capable of sinking more than 10 mA with a saturation voltage less than 0.4 V.
- High input resistance of 250 MΩ, allowing direct connection to small signal sources like thermocouples or strain gauges.
Applications
- Industrial process control: The AD654JN is used in various industrial control systems due to its high precision and reliability.
- Instrumentation and measurement systems: It is ideal for applications requiring accurate voltage-to-frequency conversion.
- Data acquisition systems: The component is used in data acquisition systems to convert analog signals into digital formats.
- Analog-to-digital conversion: The AD654JN can serve as an analog-to-digital converter when used with a microcomputer.
- Isolated signal transmission, phase-locked loops, and tuning switched-capacitor filters: Due to its versatility, it is also used in these applications.
Q & A
- What is the AD654JN?
The AD654JN is a monolithic voltage-to-frequency (V/F) and frequency-to-voltage (F/V) converter produced by Analog Devices Inc..
- What are the packaging options for the AD654JN?
The AD654JN is available in both an 8-lead mini-DIP and an 8-lead SOIC package.
- What is the maximum frequency range of the AD654JN?
The AD654JN can operate up to a maximum frequency of 500 kHz.
- What is the input voltage range for the AD654JN?
The input voltage range can be set up to ±30 V using a single RC network).
- What is the quiescent current of the AD654JN?
The quiescent current of the AD654JN is typically 2.0 mA to 2.5 mA).
- What are the key applications of the AD654JN?
The AD654JN is used in industrial process control, instrumentation and measurement systems, data acquisition systems, and analog-to-digital conversion).
- How does the AD654JN handle temperature variations?
The AD654JN has a temperature coefficient of ±50 ppm/°C, ensuring stable operation over a wide temperature range).
- Can the AD654JN drive multiple loads?
Yes, the AD654JN can drive up to 12 TTL loads, optocouplers, long cables, or similar loads due to its high current output stage).
- Is the AD654JN still in active production?
No, the AD654JN is an obsolete product and is no longer in active production. However, equivalent or alternative models may be available).
- What are the safety features of the AD654JN?
The AD654JN has a robust design for reliable operation and complies with relevant safety standards).
