Overview
The AD8436BRQZ, produced by Analog Devices Inc., is a low-cost, low-power, true RMS-to-DC converter. This component is part of a new generation of translinear precision converters designed to compute the precise DC equivalent of the RMS value of AC waveforms. It is capable of handling complex patterns such as those generated by switch-mode power supplies and triacs. The AD8436BRQZ offers high accuracy across a wide range of input levels and temperatures, making it a versatile solution for various applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | Dual: ±2.4 V to ±18 V, Single: 4.8 V to 36 V | V |
| Input Voltage Range | VEE - 0.3 V to VCC + 0.3 V | V |
| Differential Input Voltage | ±10 mA | mA |
| Operating Temperature Range | A and B grades: -40°C to 125°C, J grade: 0°C to 70°C | °C |
| Power Dissipation | CP-20-8 LFCSP without thermal pad: 1.2 W, With thermal pad: 2.1 W, RQ package: 1.1 W | W |
| Accuracy | ±0.5% and ±10 μV output offset | % and μV |
| Crest Factor Error | < 0.5% for CF values between 1 and 10 | % |
| Input Range | 100 μV rms to 3 V rms (8.5 V p-p) full-scale | V rms and V p-p |
| Bandwidth | 1 MHz for -3 dB (300 mV), 65 kHz for additional 1% error | Hz |
| Power Consumption | 300 μA typical at ±2.4 V | μA |
Key Features
- True RMS-to-DC conversion with high accuracy (±0.5% and ±10 μV output offset)
- Wide dynamic input range (100 μV rms to 3 V rms or 8.5 V p-p full-scale)
- Low power consumption (300 μA typical at ±2.4 V)
- High impedance FET input buffer and precision DC output buffer
- Wide bandwidth (1 MHz for -3 dB at 300 mV, 65 kHz for additional 1% error)
- No programming expense or processor overhead required
- Compact packages: 4 mm × 4 mm LFCSP and 8 mm × 6 mm QSOP
- ESD protected
- Accurate conversion with crest factors up to 10
Applications
- Portable multi-meters and other battery-powered applications
- Switch-mode power supplies and triac-based systems
- Low-level signal measurement and conditioning
- Industrial control and monitoring systems
- Aerospace and defense applications requiring high precision and reliability
Q & A
- What is the primary function of the AD8436BRQZ?
The AD8436BRQZ is a true RMS-to-DC converter that computes the precise DC equivalent of the RMS value of AC waveforms.
- What are the available package types for the AD8436BRQZ?
The AD8436BRQZ is available in 4 mm × 4 mm LFCSP and 8 mm × 6 mm QSOP packages.
- What is the operating temperature range for the AD8436BRQZ?
The operating temperature range is -40°C to 125°C for A and B grades, and 0°C to 70°C for J grade.
- How accurate is the AD8436BRQZ in terms of output offset?
The AD8436BRQZ has an accuracy of ≤±0.5% and ≤10 μV output offset.
- What is the typical power consumption of the AD8436BRQZ?
The typical power consumption is 300 μA at ±2.4 V supply voltage.
- Does the AD8436BRQZ require any programming or processor overhead?
No, the AD8436BRQZ does not require any programming or processor overhead.
- What is the bandwidth of the AD8436BRQZ?
The bandwidth is 1 MHz for -3 dB at 300 mV and 65 kHz for an additional 1% error.
- Can the AD8436BRQZ handle complex AC waveforms?
Yes, the AD8436BRQZ can handle complex AC waveforms, including those generated by switch-mode power supplies and triacs.
- What is the input range of the AD8436BRQZ?
The input range is 100 μV rms to 3 V rms (8.5 V p-p) full-scale.
- Is the AD8436BRQZ ESD protected?
Yes, the AD8436BRQZ is ESD protected.
