AD737 True RMS-to-DC Converter
A precision, low power converter for accurate measurements of input waveforms
- Supply Voltage: ±16.5 V
- Internal Power Dissipation: 200 mW
- Input Voltage: ±VS
- Output Short-Circuit Duration: Indefinite
- Differential Input Voltage: +VS and –VS
- Lead Temperature: 300°C
- Storage Temperature Range: -65°C to +125°C
- ESD Rating: 500V
Top Features:
- True RMS value computation
- 200 mV full-scale input range
- High input impedance: 1012 ?
- Low power consumption: 25 ?A standby current
The AD737 is a precision, monolithic, true rms-to-dc converter. It offers high accuracy for a wide range of input waveforms including variable duty cycle pulses and triac controlled sine waves.
The device computes the rms value of both ac and dc input voltages with a maximum error of ±0.2 mV ± 0.3% reading with sine wave inputs. It operates within a wide power supply range from ±2.5 V to ±16.5 V, making it versatile for various applications.
With high accuracy maintained for input waveforms and a low power supply current requirement of 160 ?A, the AD737 is optimized for portable multimeters and battery-powered devices. The absence of an output buffer amplifier minimizes dc offset errors and enhances compatibility with high input impedance ADCs.
The AD737 is available in two performance grades: AD737J and AD737K for commercial temperature range and AD737A for the industrial temperature range.
Specifications are included to provide detailed insight into the device's capabilities, ensuring accurate and reliable performance in a variety of operating conditions.
*Images are for illustration only; actual product may vary.*