Overview
The AD736BR-REEL, produced by Analog Devices Inc., is a low power, precision, monolithic true rms-to-dc converter. This component is designed to convert an ac voltage waveform to a dc voltage, providing true rms, average rectified, or absolute value measurements. It is laser trimmed to ensure high accuracy, with a maximum error of ±0.3 mV ± 0.3% of reading for sine wave inputs. The AD736 is suitable for a wide range of applications, particularly in battery-powered devices due to its low power consumption of 1 mW and maximum supply current of 200 µA.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | +2.8 V, −3.2 V to ±16.5 V | V |
| Input Impedance | 10 - 12 Ω (High Z), 8 kΩ (Low Z) | Ω |
| Input Bias Current | 25 pA maximum | pA |
| Accuracy | ±0.3 mV ± 0.3% of reading | mV, % |
| RMS Conversion | Crest factors up to 5 | - |
| Power Supply Current | 200 µA maximum | µA |
| Operating Temperature Range | −40°C to +85°C (Industrial) | °C |
| Package Type | 8-Lead SOIC | - |
Key Features
- Computes the true rms, average rectified, or absolute value of various input signals.
- High accuracy with a maximum error of ±0.3 mV ± 0.3% of reading.
- Low power consumption of 1 mW, making it suitable for battery-powered applications.
- High input impedance (10 - 12 Ω) and low input bias current (25 pA maximum).
- Wide power supply range: +2.8 V, −3.2 V to ±16.5 V.
- Buffered voltage output with no external trims needed for specified accuracy.
- Can be operated as an ac-coupled device with an external capacitor.
- Available in various temperature grades, including commercial and industrial ranges.
Applications
- Portable multimeters and other battery-powered measurement devices.
- Upgrading the performance of non-rms precision rectifiers in various applications.
- Measurement of ac and dc input voltages in industrial and commercial settings.
- Applications requiring high accuracy and low power consumption, such as in medical devices and automotive systems.
Q & A
- What is the primary function of the AD736BR-REEL?
The AD736BR-REEL is a true rms-to-dc converter that converts an ac voltage waveform to a dc voltage, providing true rms, average rectified, or absolute value measurements.
- What is the input impedance of the AD736BR-REEL?
The input impedance is 10 - 12 Ω for the high impedance input and 8 kΩ for the low impedance input.
- What is the maximum error of the AD736BR-REEL for sine wave inputs?
The maximum error is ±0.3 mV ± 0.3% of reading.
- What is the power supply range for the AD736BR-REEL?
The power supply range is +2.8 V, −3.2 V to ±16.5 V.
- How much power does the AD736BR-REEL consume?
The AD736BR-REEL consumes a maximum of 200 µA of power supply current, resulting in a power consumption of 1 mW.
- What are the operating temperature ranges for the AD736BR-REEL?
The operating temperature range is −40°C to +85°C for the industrial grade.
- Can the AD736BR-REEL be used in ac-coupled mode?
Yes, it can be operated as an ac-coupled device by adding one external capacitor.
- What types of packages are available for the AD736BR-REEL?
The AD736BR-REEL is available in an 8-Lead SOIC package.
- Does the AD736BR-REEL require external trims for accuracy?
No, the AD736BR-REEL does not require external trims for specified accuracy.
- What are some typical applications for the AD736BR-REEL?
Typical applications include portable multimeters, upgrading non-rms precision rectifiers, and measurement in industrial and commercial settings.
