Overview
The AD736JR-REEL7, produced by Analog Devices Inc., is a low power, precision, monolithic true rms-to-dc converter. This device is designed to compute the rms value of both ac and dc input voltages with high accuracy and low power consumption. It is particularly suited for battery-powered applications such as portable multimeters due to its low supply current requirement of 200 μA. The AD736JR-REEL7 offers flexibility in input configurations, supporting both high impedance and low impedance inputs, and can operate in either ac-coupled or dc-coupled modes.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Voltage Range | +2.8, -3.2 | ±5 | ±16.5 | V |
| Quiescent Current | 160 | 200 | 200 | μA |
| Input Resistance (High-Z) | 1012 | 1012 | 1012 | Ω |
| Input Resistance (Low-Z) | 6.4 | 8 | 9.6 | kΩ |
| Input Bias Current | 1 | 25 | 25 | pA |
| Accuracy | ±0.3 mV ± 0.3% | % of reading | ||
| Operating Temperature Range | 0°C | 70°C | °C | |
| Package Type | SOIC-8 |
Key Features
- Computes the true rms, average rectified, or absolute value of ac and dc input voltages.
- High input impedance of 1012 Ω and low input bias current of 25 pA.
- Low power consumption: 200 μA maximum supply current.
- Wide power supply range: +2.8 V, -3.2 V to ±16.5 V.
- High accuracy: ±0.3 mV ± 0.3% of reading.
- Buffered voltage output with optional low-pass filtering.
- No external trims needed for specified accuracy.
- Capable of measuring ac signals with crest factors up to 5.
Applications
- Portable multimeters and other battery-powered measurement devices.
- Industrial power metering and monitoring systems.
- Motor control and automation systems requiring precise voltage measurements.
- General-purpose analog input applications where high accuracy and low power are essential.
Q & A
- What is the primary function of the AD736JR-REEL7?
The AD736JR-REEL7 is a true rms-to-dc converter that computes the rms value of both ac and dc input voltages.
- What is the power consumption of the AD736JR-REEL7?
The device consumes a maximum of 200 μA of supply current.
- What are the input impedance options for the AD736JR-REEL7?
The device offers both high impedance (1012 Ω) and low impedance (6.4 kΩ to 9.6 kΩ) input options.
- What is the accuracy of the AD736JR-REEL7?
The device has an accuracy of ±0.3 mV ± 0.3% of reading.
- Can the AD736JR-REEL7 measure ac signals with high crest factors?
Yes, it can measure ac signals with crest factors up to 5.
- What is the operating temperature range for the AD736JR-REEL7?
The operating temperature range is 0°C to 70°C.
- Does the AD736JR-REEL7 require external trims for specified accuracy?
No, it does not require external trims for specified accuracy.
- What types of input coupling does the AD736JR-REEL7 support?
The device supports both dc-coupled and ac-coupled input configurations.
- What is the package type of the AD736JR-REEL7?
The device is available in an SOIC-8 package.
- Can the AD736JR-REEL7 be used in battery-powered applications?
Yes, it is optimized for use in battery-powered applications due to its low power consumption.
