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MX636 Dataheets PDF



Part Number MX636
Manufacturers Maxim Integrated Products
Logo Maxim Integrated Products
Description True RMS-to-DC Converters
Datasheet MX636 DatasheetMX636 Datasheet (PDF)

19-0824; Rev 2; 3/96 True RMS-to-DC Converters General Description The MX536A and MX636 are true RMS-to-DC converters. They feature low power and are designed to accept low-level input signals from 0 to 7VRMS for the MX536A and 0 to 200mVRMS for the MX636. Both devices accept complex input waveforms containing AC and DC components. They can be operated from either a single supply or dual supplies. Both devices draw less than 1mA of quiescent supply current, making them ideal for battery-powered.

  MX636   MX636


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19-0824; Rev 2; 3/96 True RMS-to-DC Converters General Description The MX536A and MX636 are true RMS-to-DC converters. They feature low power and are designed to accept low-level input signals from 0 to 7VRMS for the MX536A and 0 to 200mVRMS for the MX636. Both devices accept complex input waveforms containing AC and DC components. They can be operated from either a single supply or dual supplies. Both devices draw less than 1mA of quiescent supply current, making them ideal for battery-powered applications. Input and output offset, positive and negative waveform symmetry (DC reversal), and full-scale accuracy are laser trimmed, so that no external trims are required to achieve full rated accuracy. ____________________________Features o True RMS-to-DC Conversion o Computes RMS of AC and DC Signals o Wide Response: 2MHz Bandwidth for VRMS > 1V (MX536A) 1MHz Bandwidth for VRMS > 100mV (MX636) o Auxiliary dB Output: 60dB Range (MX536A) 50dB Range (MX636) o Single- or Dual-Supply Operation o Low Power: 1.2mA typ (MX536A) 800µA typ (MX636) MX536A/MX636 Ordering Information PART MX536AJC/D MX536AJCWE MX536AJD MX536AJH MX536AJN MX536AJQ* MX536AKCWE MX536AKD MX536AKH MX536AKN MX536AKQ* MX536ASD TEMP. RANGE 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C -55°C to +125°C PIN-PACKAGE Dice** 16 Wide SO 14 Ceramic 10 TO-100 14 Plastic DIP 14 CERDIP 16 Wide SO 14 Ceramic 10 TO-100 14 Plastic DIP 14 CERDIP 14 Ceramic ________________________Applications Digital Multimeters Battery-Powered Instruments Panel Meters Process Control Pin Configurations TOP VIEW IOUT 10 RL 1 COMMON 2 +VS 3 VIN 4 9 BUF IN 8 BUF OUT MX536A MX636B 5 -VS 7 dB 6 CAV Ordering Information continued at end of data sheet. * Maxim reserves the right to ship ceramic packages in lieu of CERDIP packages. ** Dice are specified at TA = +25°C. _________Typical Operating Circuits CAV TO-100 VIN 1 N.C. 2 -VS 3 CAV 4 dB 5 BUF OUT 6 BUF IN 7 14 +VS 13 N.C. 12 N.C. VIN 1 2 ABSOLUTE VALUE SQUARER DIVIDER 14 13 12 11 +VS -VS MX536A MX636 3 4 5 11 N.C. 10 COMMON 9 8 RL IOUT VOUT CURRENT MIRROR 10 9 6 7 BUF 8 DIP Pin Configurations continued at end of data sheet. Typical Operating Circuits continued at end of data sheet. 1 ________________________________________________________________ Maxim Integrated Products For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 408-737-7600 ext. 3468. True RMS-to-DC Converters MX536A/MX636 ABSOLUTE MAXIMUM RATINGS Supply Voltage: Dual Supplies (MX536A) ............................±18V (MX636) .............................±12V Single Supply (MX536A) ...........................+36V (MX636) .............................+24V Input Voltage (MX536A).......................................................±25V (MX636) .........................................................±12V Power Dissipation (Package) Plastic DIP (derate 12mW/°C above +75°C) ...............450mW Small Outline (derate 10mW/°C above +75°C)............400mW Ceramic (derate 10mW/°C above +75°C) ...................500mW TO-100 metal can (derate 7mW/°C above +75°C) ......450mW Output Short-Circuit Duration ........................................Indefinite Operating Temperature Ranges Commercial (J, K) ...............................................0°C to +70°C Military (S) ......................................................-55°C to +125°C Storage Temperature Range .............................-55°C to +150°C Lead Temperature (soldering, 10sec)................................300°C Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS—MX536A (TA = +25°C, +VS = +15V, -VS = -15V, unless otherwise noted.) PARAMETER Transfer Equation Averaging Time Constant CONVERSION ACCURACY Total Error, Internal Trim (Note 1) MX536AJ, AS MX536AK MX536AJ Total Error vs. Temperature TMIN to +70°C +70°C to +125°C Total Error vs. Supply Total Error vs. DC Reversal Total Error, External Trim (Note 1) MX536AJ, AS MX536AK MX536AJ, AS MX536AK Crest Factor 1 to 2 Additional Error FREQUENCY RESPONSE (Note 3) Bandwidth for 1% Additional Error (0.09dB) VIN = 10mV VIN = 100mV VIN = 1V VIN = 10mV ±3dB Bandwidth VIN = 100mV VIN = 1V 5 45 120 90 450 2.3 kHz MHz kHz Crest Factor = 3 Crest Factor = 7 MX536AK MX536AS MX536AS ±5 ±0.5 ±2 ±0.2 ±0.1 ±0.01 ±0.05 ±0.005 ±0.1 ±0.005 ±0.03 ±0.005 ±0.1 ±0.01 ±0.2 ±0.1 ±3 ±0.3 ±2 ±0.1 Specified Accuracy -0.1 -1.0 % of Reading mV ±% of Reading/V % of Reading mV ±% of Reading mV ±% of Reading/°C mV ±% of Reading Figure 3.


IC200-xxx MX636 MX633


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