Overview
The AD536ASD, produced by Analog Devices Inc., is a complete monolithic integrated circuit designed for true rms-to-dc conversion. This device offers performance comparable or superior to that of hybrid or modular units, making it a cost-effective solution for various applications. The AD536ASD directly computes the true rms value of any complex input waveform containing ac and dc components, with a crest factor compensation scheme allowing measurements with 1% error at crest factors up to 7. It operates within a wide bandwidth, extending measurement capability to 300 kHz with less than 3 dB errors for signal levels greater than 100 mV.
Key Specifications
| Specification | Value |
|---|---|
| Accuracy Grades | AD536AJ (±5 mV ± 0.5% of reading), AD536AK (±2 mV ± 0.2% of reading), AD536AS (±5 mV ± 0.5% of reading) |
| Temperature Range | 0°C to 70°C (AD536AJ, AD536AK), -55°C to +125°C (AD536AS) |
| Bandwidth | Up to 300 kHz for signal levels > 100 mV, 2 MHz for signal levels > 1 V |
| Crest Factor | Up to 7 for 1% error |
| Supply Voltage | 5 V to 36 V (single or dual supply) |
| Quiescent Supply Current | 1 mA |
| Package Options | 14-lead DIP, 10-pin TO-100, 20-terminal leadless hermetically sealed ceramic chip carrier |
| dB Output Range | 60 dB dynamic range |
Key Features
- True rms-to-dc conversion for complex ac and dc input waveforms.
- Laser trimmed for high accuracy and minimal input and output offset voltage.
- Auxiliary dB output pin with a 60 dB dynamic range.
- Wide bandwidth and low power consumption (1 mA quiescent supply current).
- Single- or dual-supply operation with supply levels from 5 V to 36 V.
- Input and output pins fully protected against overloads and short circuits.
- No external trims required to achieve rated unit accuracy.
Applications
- Remote controllers and battery-powered instruments due to low power consumption.
- Measurement and monitoring systems requiring accurate rms measurements.
- Audio and signal processing applications where true rms values are necessary.
- Industrial control and automation systems.
- Test and measurement equipment.
Q & A
- What is the primary function of the AD536ASD?
The AD536ASD is a true rms-to-dc converter, computing the true rms value of complex ac and dc input waveforms.
- What are the accuracy grades available for the AD536ASD?
The device is available in three accuracy grades: AD536AJ (±5 mV ± 0.5% of reading), AD536AK (±2 mV ± 0.2% of reading), and AD536AS (±5 mV ± 0.5% of reading).
- What is the temperature range for the AD536ASD?
The temperature range is 0°C to 70°C for AD536AJ and AD536AK, and -55°C to +125°C for AD536AS.
- What is the bandwidth of the AD536ASD?
The device has a bandwidth of up to 300 kHz for signal levels greater than 100 mV and up to 2 MHz for signal levels greater than 1 V.
- What is the crest factor compensation of the AD536ASD?
The device allows measurements with 1% error at crest factors up to 7.
- What are the supply voltage options for the AD536ASD?
The device can operate from single or dual supplies with total supply levels from 5 V to 36 V.
- What is the quiescent supply current of the AD536ASD?
The quiescent supply current is 1 mA.
- What package options are available for the AD536ASD?
The device is available in 14-lead DIP, 10-pin TO-100, and 20-terminal leadless hermetically sealed ceramic chip carrier packages.
- Does the AD536ASD have an auxiliary output?
Yes, it has an auxiliary dB output pin with a 60 dB dynamic range.
- Is the AD536ASD protected against overloads and short circuits?
Yes, the input and output pins are fully protected against overloads and short circuits.
