Overview
The AD650SD, produced by Analog Devices Inc., is a versatile voltage-to-frequency (V/F) and frequency-to-voltage (F/V) converter. This device is renowned for its high frequency operation and low nonlinearity, making it suitable for a wide range of applications. The AD650SD can operate at full-scale output frequencies up to 1 MHz and features a high linearity of ±0.1%, which is equivalent to approximately 14-bit resolution in analog-to-digital converter circuits. It is available in a 14-lead ceramic DIP package and is specified for the extended temperature range of −55°C to +125°C, ensuring reliability and durability in critical environments.
Key Specifications
| Parameter | Value |
|---|---|
| Maximum Frequency | Up to 1 MHz |
| Linearity Error | Typically 20 ppm (0.002% of full scale), Maximum 50 ppm (0.005%) at 10 kHz full scale |
| Temperature Range | −55°C to +125°C |
| Input Configuration | Bipolar, Unipolar, or Differential Input Voltages, or Unipolar Input Currents |
| Output Type | Open-Collector Frequency Output |
| Package Type | 14-Lead Ceramic DIP |
| Mounting Type | Through Hole |
| Standards Compliance | MIL-STD-883 |
Key Features
- High frequency operation up to 1 MHz with excellent linearity (±0.1%).
- Flexible input configuration supporting bipolar, unipolar, or differential input voltages, or unipolar input currents.
- Open-collector frequency output compatible with TTL or CMOS logic families.
- Separate analog and digital grounds to prevent ground loops.
- User-programmable input signal range and full-scale output frequency using external capacitors and one resistor.
- Input offset voltage can be trimmed to zero with an external potentiometer.
- MIL-STD-883 compliant, ensuring high reliability and durability.
Applications
- Analog-to-digital conversion with high resolution.
- Isolated analog signal transmission.
- Phased-locked loop circuits.
- Precision stepper motor speed controllers.
- Precision tachometer and FM demodulator circuits in F/V mode.
- PMIC applications requiring fast and precise data conversion.
Q & A
- What is the maximum frequency output of the AD650SD?
The AD650SD can operate at full-scale output frequencies up to 1 MHz.
- What is the linearity error of the AD650SD?
The linearity error is typically 20 ppm (0.002% of full scale) and a maximum of 50 ppm (0.005%) at 10 kHz full scale.
- What temperature range is the AD650SD specified for?
The AD650SD is specified for the extended temperature range of −55°C to +125°C.
- What types of input configurations are supported by the AD650SD?
The AD650SD supports bipolar, unipolar, or differential input voltages, or unipolar input currents.
- Is the AD650SD compatible with TTL or CMOS logic families?
- How can the input offset voltage be adjusted on the AD650SD?
The input offset voltage can be trimmed to zero with an external potentiometer.
- What standards does the AD650SD comply with?
The AD650SD complies with MIL-STD-883 standards.
- What is the package type of the AD650SD?
The AD650SD is available in a 14-lead ceramic DIP package.
- What are some common applications of the AD650SD?
- Can the AD650SD be used for both V/F and F/V conversions?
