Overview
The AD536AJQ, 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 robust solution for various measurement applications. The AD536AJQ computes the true root-mean-square level of complex ac (or ac plus dc) input signals, providing an equivalent dc output level. This functionality is particularly useful as the rms value relates directly to the power of the signal and its standard deviation.
Key Specifications
| Specification | Value |
|---|---|
| Package Type | 14-Lead CerDIP |
| Temperature Range | 0°C to 70°C (Commercial), -55°C to +125°C (Extended) |
| Supply Voltage | 5 V to 36 V (Single or Split Supplies) |
| Quiescent Supply Current | 1 mA |
| Bandwidth | Up to 300 kHz with less than 3 dB error for signal levels > 100 mV |
| Crest Factor Compensation | 1% error at crest factors up to 7 |
| Accuracy Grades | J, K, S (±5 mV ± 0.5% of reading for J and AS, ±2 mV ± 0.2% of reading for K) |
| dB Output | Auxiliary dB output pin with a dynamic range of 60 dB |
Key Features
- True RMS-to-DC Conversion: The AD536AJQ directly computes the true rms value of any complex input waveform containing ac and dc components.
- Crest Factor Compensation: Allows measurements with 1% error at crest factors up to 7.
- Wide Bandwidth: Extends the measurement capability to 300 kHz with less than 3 dB errors for signal levels greater than 100 mV.
- Auxiliary dB Output: The logarithm of the rms output signal is brought out to a separate pin, allowing dB conversion with a useful dynamic range of 60 dB.
- Low Quiescent Supply Current: Operates with a quiescent supply current of 1 mA, making it suitable for battery-powered instruments.
- Flexible Supply Voltage: Operates equally well from split supplies or a single supply with total supply levels from 5 V to 36 V.
Applications
- Remote Controllers: Suitable for remote controllers due to its low quiescent supply current and wide supply voltage range.
- Battery-Powered Instruments: Ideal for battery-powered instruments requiring accurate rms measurements.
- Signal Processing: Used in various signal processing applications where true rms values of complex waveforms need to be measured accurately.
- Industrial Measurement Systems: Employed in industrial measurement systems requiring high accuracy and reliability.
Q & A
- What is the primary function of the AD536AJQ?
The AD536AJQ is a monolithic integrated circuit designed for true rms-to-dc conversion, computing the true root-mean-square level of complex ac (or ac plus dc) input signals.
- What are the available accuracy grades for the AD536A series?
The AD536A series is available in three accuracy grades: J, K, and S. The AD536AK offers a maximum total error of ±2 mV ± 0.2% of reading, while the AD536AJ and AD536AS have maximum errors of ±5 mV ± 0.5% of reading.
- What is the bandwidth of the AD536AJQ?
The device has a bandwidth extending up to 300 kHz with less than 3 dB errors for signal levels greater than 100 mV.
- Does the AD536AJQ require external trims for accuracy?
No, the AD536AJQ is laser trimmed to minimize input and output offset voltage and to optimize positive and negative waveform symmetry, eliminating the need for external trims.
- What is the quiescent supply current of the AD536AJQ?
The quiescent supply current is 1 mA, making it suitable for battery-powered instruments.
- What is the supply voltage range for the AD536AJQ?
The device operates equally well from split supplies or a single supply with total supply levels from 5 V to 36 V.
- What is the purpose of the auxiliary dB output pin?
The auxiliary dB output pin allows the logarithm of the rms output signal to be brought out, enabling dB conversion with a useful dynamic range of 60 dB.
- What types of packages are available for the AD536A series?
The AD536A series is available in hermetically sealed 14-lead DIP, 10-pin TO-100 metal header, and 20-terminal leadless hermetically sealed ceramic chip carrier packages.
- Is an external capacitor required for the AD536AJQ?
- What are some typical applications of the AD536AJQ?
