Overview
The AD736JRZ-RL, produced by Analog Devices Inc., is a low power, precision, monolithic true rms-to-dc converter. This device is designed to compute the true rms, average rectified, or absolute value of various input signals, making it highly versatile for a range of applications. The AD736JRZ-RL is part of the AD736 series, which is known for its high accuracy and low power consumption, making it suitable for battery-powered devices such as portable multimeters.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Impedance (High-Z FET Input) | 10^12 | Ω |
| Input Impedance (Low-Z Input) | 8 kΩ | Ω |
| Input Bias Current | 25 pA (max) | pA |
| Maximum Error | ±0.3 mV ± 0.3% of reading | mV, % |
| Power Supply Range | +2.8 V, -3.2 V to ±16.5 V | V |
| Power Consumption | 1 mW | mW |
| Supply Current | 200 μA (max) | μA |
| Operating Temperature Range | -40°C to +85°C (AD736A, AD736B grades) | °C |
| Package Type | 8-Lead SOIC |
Key Features
- Computes the true rms, average rectified, or absolute value of input signals.
- High input impedance (10^12 Ω) and low input bias current (25 pA max) for high-Z input attenuators.
- Low impedance input (8 kΩ) for measuring up to 300 mV rms input levels.
- High accuracy with a maximum error of ±0.3 mV ± 0.3% of reading.
- Supports input waveforms with crest factors up to 5.
- Low power consumption of 1 mW and supply current of 200 μA max.
- Buffered voltage output for design flexibility.
- No external trims needed for specified accuracy.
- Single external averaging capacitor required for true rms measurement.
Applications
- Portable multimeters and other battery-powered measurement devices.
- Upgrading non-rms precision rectifiers in various applications.
- Measuring ac and dc input voltages with high accuracy.
- Applications requiring ac-coupled operation with external capacitors.
- Devices needing to measure input signal levels as low as 100 μV rms.
Q & A
- What is the primary function of the AD736JRZ-RL?
The AD736JRZ-RL computes the true rms, average rectified, or absolute value of various input signals.
- What are the input impedance options for the AD736JRZ-RL?
The device offers both high impedance (10^12 Ω) and low impedance (8 kΩ) input options.
- What is the maximum error of the AD736JRZ-RL?
The maximum error is ±0.3 mV ± 0.3% of reading.
- What is the power supply range for the AD736JRZ-RL?
The power supply range is +2.8 V, -3.2 V to ±16.5 V.
- How much power does the AD736JRZ-RL consume?
The device consumes 1 mW of power.
- What is the typical supply current for the AD736JRZ-RL?
The typical supply current is 200 μA.
- What types of input waveforms can the AD736JRZ-RL handle?
The device can handle input waveforms with crest factors up to 5 and various duty-cycle pulses.
- Does the AD736JRZ-RL require external trims for accuracy?
No, the AD736JRZ-RL does not require external trims for specified accuracy.
- What is the package type for the AD736JRZ-RL?
The package type is 8-Lead SOIC.
- What are some common applications for the AD736JRZ-RL?
Common applications include portable multimeters, battery-powered measurement devices, and upgrading non-rms precision rectifiers.
