Overview
The AD8436JCPZ-R7, produced by Analog Devices Inc., is a cutting-edge, translinear precision, low power, true rms-to-dc converter. This device is designed to compute the precise dc equivalent of the rms value of ac waveforms, including complex patterns generated by switch mode power supplies and triacs. It offers high accuracy across a wide range of input levels and temperatures, with an ensured accuracy of ≤±0.5% and ≤10 μV output offset. The AD8436 is notable for its low power consumption, ease of integration, and the absence of programming or processor overhead, making it an ideal choice for various applications, including portable multi-meters and battery-powered devices.
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 |
| Input Range | 100 μV rms to 3 V rms (8.5 V p-p) | V |
| Bandwidth | 1 MHz for -3 dB (300 mV); 65 kHz for additional 1% error | Hz |
| Accuracy | ±10 μV ± 0.25% of reading (B grade) | - |
| Crest Factor Error | < 0.5% for CF values between 1 and 10 | - |
| Package Type | 20-Lead LFCSP (4mm x 4mm) and 20-Lead QSOP | - |
Key Features
- Translinear precision, low power, true rms-to-dc conversion
- High accuracy: ≤±0.5% and ≤10 μV output offset
- Wide dynamic input range: 100 μV rms to 3 V rms (8.5 V p-p)
- Fast settling at all input levels
- Wide bandwidth: 1 MHz for -3 dB (300 mV); 65 kHz for additional 1% error
- Zero converter dc output offset and no residual switching products
- Accurate conversion with crest factors up to 10
- Low power consumption: 300 μA typical at ±2.4 V
- High-Z FET separately powered input buffer
- Precision dc output buffer with low offset voltages
- Wide power supply voltage range: Dual ±2.4 V to ±18 V; Single 4.8 V to 36 V
- Compact packages: 4 mm × 4 mm LFCSP and 8 mm × 6 mm QSOP
- ESD protected
Applications
- Portable multi-meters and battery-powered applications
- Switch mode power supplies and triac-based systems
- Industrial automation and control systems
- Aerospace and defense systems requiring precise signal processing
- Medical devices needing accurate signal conversion
- Any application requiring true rms measurement of complex ac waveforms
Q & A
- What is the primary function of the AD8436JCPZ-R7?
The AD8436JCPZ-R7 is a true rms-to-dc converter that computes the precise dc equivalent of the rms value of ac waveforms.
- What is the accuracy of the AD8436JCPZ-R7?
The device offers an accuracy of ≤±0.5% and ≤10 μV output offset.
- What is the input voltage range of the AD8436JCPZ-R7?
The input voltage range is from 100 μV rms to 3 V rms (8.5 V p-p).
- What are the available package types for the AD8436JCPZ-R7?
The device is available in 20-Lead LFCSP (4mm x 4mm) and 20-Lead QSOP packages.
- What is the operating temperature range for the AD8436JCPZ-R7?
The operating temperature range is 0°C to 70°C for J grade and -40°C to 125°C for A and B grades.
- Does the AD8436JCPZ-R7 require external programming or processor overhead?
No, the AD8436JCPZ-R7 does not require any programming or processor overhead.
- What is the power consumption of the AD8436JCPZ-R7?
The typical power consumption is 300 μA at ±2.4 V supply voltage.
- Is the AD8436JCPZ-R7 ESD protected?
- What are some common applications of the AD8436JCPZ-R7?
- Can the AD8436JCPZ-R7 handle complex ac waveforms?
