Overview
The AD652SQ/883B from Analog Devices Inc. is a monolithic synchronous voltage-to-frequency converter (SVFC) designed for high-precision analog-to-digital conversion. This device is particularly suited for applications requiring accurate and stable frequency output from a voltage input. The AD652SQ/883B is compliant with MIL-STD-883, ensuring its reliability and performance in demanding environments. It operates over an extended temperature range of −55°C to +125°C, making it versatile for various industrial and military applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Gain Error (fCLOCK = 200 kHz) | ±0.5 | ±1 | ±0.5 | % |
| Gain Error (fCLOCK = 1 MHz) | ±0.5 | ±1 | ±0.5 | % |
| Gain Error (fCLOCK = 4 MHz) | ±0.5 | ±1.5 | ±0.75 | % |
| Gain Temperature Coefficient (fCLOCK = 200 kHz) | ±25 | ±50 | ±15 | µV/°C |
| Maximum Output Frequency | 2 | MHz | ||
| Common-Mode Input Range | −VS + 5 | +VS − 5 | V | |
| Clock Input Maximum Frequency | 4 | MHz | ||
| Reference Output Voltage | 4.950 | 5.0 | 5.050 | V |
| Reference Output Drift | 100 | 50 | ppm/°C | |
| Power Supply Rated Voltage | ±6 | ±18 | V | |
| Quiescent Current | ±11 | ±15 | mA | |
| Operating Temperature Range | −55 | +125 | °C |
Key Features
- Extremely low linearity error (±0.02% max at 2 MHz full scale) ensuring high accuracy in conversions.
- No critical external components required, simplifying the design and reducing component count.
- Accurate 5 V reference voltage with low drift (50 ppm/°C max) for stable operation.
- Dual- or single-supply operation, offering flexibility in system design.
- Voltage or current input capability, accommodating various signal types.
- TTL and CMOS compatible clock input, and flexible open-collector output stage suitable for TTL, CMOS, optical couplers, and pulse transformers.
- Capacitor-programmable one-shot for selecting optimum output pulse width to reduce power consumption.
- MIL-STD-883 compliant versions available, ensuring reliability in military and industrial applications.
Applications
- Industrial control systems: For precise control and monitoring in industrial environments.
- Precision instrumentation: In applications requiring high accuracy and stability, such as in scientific instruments and test equipment.
- Automatic testing equipment: For reliable and accurate signal conversion in automated testing systems.
- Data acquisition systems: To convert analog signals to digital signals with high precision and stability.
- Isolated analog signal transmission: The AD652 can be configured for use as a synchronous F/V converter for isolated analog signal transmission.
Q & A
- What is the maximum output frequency of the AD652SQ/883B?
The maximum output frequency is 2 MHz. - What is the linearity error of the AD652SQ/883B at 2 MHz full scale?
The linearity error is ±0.02% maximum at 2 MHz full scale. - Does the AD652SQ/883B require any critical external components?
No, it does not require any critical external components for operation. - What is the temperature range of the AD652SQ/883B?
The operating temperature range is −55°C to +125°C. - Is the AD652SQ/883B compliant with any military standards?
Yes, it is compliant with MIL-STD-883. - What types of power supply can the AD652SQ/883B operate with?
The AD652SQ/883B can operate with both dual and single power supplies. - What is the common-mode input range of the AD652SQ/883B?
The common-mode input range is from −VS + 5 to +VS − 5 volts. - Can the AD652SQ/883B be used for isolated analog signal transmission?
Yes, it can be configured for use as a synchronous F/V converter for isolated analog signal transmission. - What is the reference output voltage of the AD652SQ/883B?
The reference output voltage is 5 V with a drift of 50 ppm/°C maximum. - What is the quiescent current of the AD652SQ/883B?
The quiescent current is ±11 to ±15 mA.
