Product Summary

The AD737JRZ is a low power, precision, monolithic true rms-to-dc converter. It is laser trimmed to provide a maximum error of ±0.2 mV ±0.3% of reading with sine-wave inputs. Furthermore, it maintains high accuracy while measuring a wide range of input waveforms, including variable duty cycle pulses and triac (phase) controlled sine waves. The low cost and small physical size of this converter make it suitable for upgrading the performance of non-rms “precision rectifiers” in many applications. Compared to these circuits, the AD737JRZ offers higher accuracy at equal or lower cost.

Parametrics

AD737JRZ absolute maximum ratings: (1)Supply Voltage: ±16.5 V; (2)Internal Power Dissipation: 200 mW; (3)Output Short-Circuit Duration: Indefinite; (4)Differential Input Voltage: +VS and –VS; (5)Storage Temperature Range (Q): –65℃ to +150℃; (6)Storage Temperature Range (N, R): –65℃ to +125℃; (7)Lead Temperature Range (Soldering 60 sec): +300℃; (8)ESD Rating: 500 V.

Features

AD737JRZ features: (1)True RMS Value; (2)Average Rectified Value; (3)Absolute Value; (4)200 mV Full-Scale Input Range (Larger Inputs with Input Attenuator); (5)Direct Interfacing with 3 1/2 Digit CMOS A/D Converters; (6)High Input Impedance of 1012 V; (7)Low Input Bias Current: 25 pA max; (8)High Accuracy: 60.2 mV 60.3% of Reading; (9)RMS Conversion with Signal Crest Factors Up to 5; (10)Wide Power Supply Range: +2.8 V, -3.2 V to 616.5 V; (11)Low Power: 160 mA max Supply Current; (12)No External Trims Needed for Specified Accuracy; (13)AD736—A General Purpose, Buffered Voltage Output Version Also Available.

Diagrams

AD737JRZ block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
AD737JRZ
AD737JRZ

IC TRUE RMS/DC CONV LP 8-SOIC
Data Sheet
0-1: $4.43
1-10: $3.99
10-100: $3.28
100-250: $3.01
250-500: $2.75
500-1000: $2.39
1000-2500: $2.36
AD737JRZ-5
AD737JRZ-5

IC TRUE RMS/DC CONV LP 8-SOIC
Data Sheet
0-98: $3.63
AD737JRZ-5-R7
AD737JRZ-5-R7

IC TRUE RMS/DC CONV LP 8-SOIC
Data Sheet
0-1000: $2.39
AD737JRZ-5-RL
AD737JRZ-5-RL

IC TRUE RMS/DC CONV LP 8-SOIC
Data Sheet
0-2500: $2.36
AD737JRZ-R7
AD737JRZ-R7

IC TRUE RMS/DC CONV LP 8-SOIC
Data Sheet
0-1000: $2.39
AD737JRZ-RL
AD737JRZ-RL

IC CONV TRUE RMS-DC LP 8SOIC
Data Sheet
0-2500: $2.36