Overview
The AD736BRZ-R7, produced by Analog Devices Inc., is a precision, low-power, monolithic true rms-to-dc converter. This component is part of the AD736 series, which is designed to convert AC voltage waveforms into DC voltages, providing true rms, average rectified, or absolute values of the input signals.
The AD736BRZ-R7 is optimized for high accuracy and low power consumption, making it suitable for a variety of applications, particularly in battery-powered devices.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Voltage Range | +2.8, -3.2 | ±5 | ±16.5 | V |
| Quiescent Current (Zero Signal) | 160 | 200 | 200 | µA |
| Quiescent Current (200 mV rms, No Load, Sine Wave Input) | 230 | 270 | 270 | µA |
| Input Impedance | 10^12 | Ω | ||
| Input Bias Current | 25 pA | |||
| Accuracy | ±0.3 mV ± 0.3% of reading | |||
| Operating Temperature Range (Commercial) | 0 | 70 | °C | |
| Operating Temperature Range (Industrial) | -40 | 85 | °C |
Key Features
- High accuracy: ±0.3 mV ± 0.3% of reading for true rms, average rectified, or absolute value measurements.
- Low power consumption: Maximum of 200 µA supply current, making it suitable for battery-powered applications.
- High input impedance: 10^12 Ω, eliminating the need for an external buffer when interfacing with input attenuators.
- Wide power supply range: +2.8 V to ±16.5 V.
- Buffered voltage output: No external trims needed for specified accuracy.
- Low impedance input available for input signals up to 300 mV rms.
- Capable of measuring AC signals with crest factors up to 5.
Applications
- Battery-powered multimeters and other portable measurement devices.
- AC and DC signal measurement in various industrial and consumer electronics.
- Power monitoring and control systems.
- Auditory and audio equipment where accurate RMS measurements are necessary.
- Medical devices requiring precise signal measurement.
Q & A
- What is the AD736BRZ-R7 used for?
The AD736BRZ-R7 is used to convert AC voltage waveforms into DC voltages, providing true rms, average rectified, or absolute values of the input signals.
- What is the operating voltage range of the AD736BRZ-R7?
The operating voltage range is from +2.8 V to ±16.5 V.
- How much power does the AD736BRZ-R7 consume?
The maximum quiescent current is 200 µA.
- What is the input impedance of the AD736BRZ-R7?
The input impedance is 10^12 Ω.
- What is the accuracy of the AD736BRZ-R7?
The accuracy is ±0.3 mV ± 0.3% of reading.
- Can the AD736BRZ-R7 measure signals with high crest factors?
Yes, it can measure signals with crest factors up to 5.
- What are the typical applications of the AD736BRZ-R7?
Typical applications include battery-powered multimeters, industrial and consumer electronics, power monitoring systems, and medical devices.
- Does the AD736BRZ-R7 require external trims for accuracy?
No, it does not require external trims for specified accuracy.
- What is the operating temperature range of the AD736BRZ-R7?
The operating temperature range is from -40°C to +85°C for industrial grades and 0°C to 70°C for commercial grades.
- How many external components are required for true RMS measurement?
Only one external component, an averaging capacitor, is required for true RMS measurement.
