The AD8436 is a low cost, low power, true RMS-to-DC converter that can compute true RMS value instantly. It offers high accuracy, wide dynamic input range, wide bandwidth, low power consumption, and other features.
The AD8436 is a low‑cost, low‑power true RMS‑to‑DC converter that provides instant RMS calculations for AC waveforms, including complex patterns from switch‑mode power supplies. It offers a wide dynamic input range, high bandwidth, and a compact 4 mm × 4 mm package suitable for portable and battery‑powered applications.
The document includes functional block diagrams, pin descriptions, absolute maximum ratings, thermal resistance data, and extensive performance graphs. Detailed specifications such as conversion error, supply voltage ranges, input resistance, and bandwidth are provided for designers.
| Conversion Error | +10% to -0.5% of reading |
|---|---|
| Supply Voltage (Dual) | +2.4 V to +18 V |
| Supply Voltage (Single) | +4.8 V to 36 V |
| Input Resistance | 7.92 kΩ to 8.08 kΩ |
| Supply Current (no input) | 325 pA typical |
| 3 dB Bandwidth | 1 MHz |
| Operating Temperature Range | ‑40 °C to +125 °C |
The AD8436 can operate from dual supplies of +2.4 V to +18 V or from a single supply of +4.8 V to 36 V.
Typical supply current with no input is 325 pA.
The input resistance is approximately 8 kΩ (7.92 kΩ to 8.08 kΩ).
The conversion error is specified as +10 % to –0.5 % of the reading.