AD736ARZ-R7
| Parameters | |
|---|---|
| Series | - |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Mfr | Analog Devices Inc. |
| Mounting Type | Surface Mount |
| Current - Supply | 160 µA |
| Supplier Device Package | 8-SOIC |
| Voltage - Supply | 2.8V, -3.2V ~ ±16.5V |
| Package | Tape & Reel (TR) |
| Product Status | Not For New Designs |
| Base Product Number | AD736 |
| REACH Status | REACH Unaffected |
| Standard Package | 1,000 |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
AD736ARZ-R7 monolithic true RMS-to-DC converter
The AD736ARZ-R7 from Analog Devices is a low-cost, low-power, precision monolithic true RMS-to-DC converter designed for accurate measurement of complex AC waveforms in portable and industrial instrumentation . Supplied in a compact 8-pin SOIC package on tape and reel, this device is laser-trimmed to provide a maximum error of ±0.3 mV ± 0.3% of reading for sine wave inputs . It features a 200 mV rms full-scale input range (expandable with an external attenuator), an exceptionally high input impedance of 10¹² Ω, and a very low input bias current of 25 pA maximum . Operating from a wide power supply range of +2.8 V, -3.2 V to ±16.5 V, it consumes a maximum supply current of only 200 µA (1 mW), making it ideal for battery-powered systems .
AD736ARZ-R7 converter key features
This converter delivers exceptional accuracy and versatility for true RMS measurements of AC signals . Its core function is to compute the true RMS, average rectified, or absolute value of various input waveforms, including variable duty-cycle pulses and triac-controlled sine waves, with high precision . The requirement of only one external averaging capacitor for true RMS operation simplifies circuit design and minimizes the bill of materials . The ultra-low power consumption is a key benefit for portable, battery-operated equipment like handheld multimeters, significantly extending operational life . Furthermore, it provides a buffered voltage output and achieves its specified accuracy without requiring external trim adjustments .
Alternative RMS converters
● AD737JRZ (Analog Devices): A closely related RMS-to-DC converter from the same family that features a power-down mode for ultra-low standby current (25 µA) and provides a negative DC output voltage .
● LTC1966IMS8#PBF (Analog Devices): A micropower, precision RMS-to-DC converter utilizing a delta-sigma computational technique, offering high accuracy and very low power consumption from a single 2.7V to 5.5V supply .
● MAX4007 (Maxim Integrated): A high-frequency, wide-bandwidth RMS-to-DC converter capable of measuring complex waveforms up to 7.5 GHz, designed for RF and microwave power measurement applications .
● AD736JNZ (Analog Devices): The commercial temperature grade (0°C to +70°C) version in a PDIP-8 package of the same core AD736 converter, suitable for less demanding environmental conditions.
