MX536A Maxim Integrated Products, MX536A Datasheet
MX536A
Available stocks
Related parts for MX536A
MX536A Summary of contents
Page 1
... Rev 2; 3/96 General Description The MX536A and MX636 are true RMS-to-DC convert- ers. They feature low power and are designed to accept low-level input signals from and 0 to 200mV for the MX636. Both devices accept RMS complex input waveforms containing AC and DC com- ponents ...
Page 2
... True RMS-to-DC Converters 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/° ...
Page 3
... ELECTRICAL CHARACTERISTICS—MX536A (continued +25° +15V -15V, unless otherwise noted PARAMETER INPUT CHARACTERISTICS ±15V Supplies Continuous RMS Peak Transient Input Signal Range ±5V Supplies Continuous RMS Peak Transient Safe Input All Supplies Input Resistance MX536AJ, AS Input Offset Voltage MX536AK ...
Page 4
... True RMS-to-DC Converters ELECTRICAL CHARACTERISTICS—MX536A (continued +25° +15V -15V, unless otherwise noted PARAMETER BUFFER AMPLIFIER Input and Output Voltage Range Input Offset Voltage R S Input Bias Current Input Resistance Source Output Current Sink Short-Circuit Current Small-Signal Bandwidth Slew Rate (Note 4) ELECTRICAL CHARACTERISTICS— ...
Page 5
ELECTRICAL CHARACTERISTICS—MX636 (continued +25° +3V -5V, unless otherwise noted PARAMETER INPUT CHARACTERISTICS Continuous RMS, All Supplies Input Signal Range Peak Transient Safe Input All Supplies Input Resistance MX636J Input Offset Voltage ...
Page 6
... MX536A/MX636 is · R2 · I OUT RMS 6 _______________________________________________________________________________________ CONDITIONS , DC or 1kHz sine-wave input with the MX536A connected as in Figure 2. RMS rectangular pulse stream, pulse width = 200µs. RMS ), with pin 9 tied to COMMON. OUT rectangular pulse input, pulse width = 200µs. RMS ...
Page 7
... R3 25k 12k Figure 1. MX536A Simplified Schematic ABSOLUTE VALUE 2 -V SQUARER 3 S DIVIDER 4 CURRENT 5 MIRROR V 6 OUT BUF 7 Figure 2. MX536A/MX636 Standard RMS Connection _______________________________________________________________________________________ True RMS-to-DC Converters 0.2mA 12k A2 ONE-QUADRANT SQUARER/DIVIDER + MX536A 12 MX636 ...
Page 8
... DC input should give 200mV DC output; a ±200mV peak-to-peak sine-wave should give 141mV DC output. Single-Supply Operation Both the MX536A and the MX636 can be used with a single supply down to +5V (Figure 5). The major limita- tion of this connection is that only AC signals can be measured, since the differential input stage must be biased off ground for proper operation ...
Page 9
... Settling Time to Within Stated % of New RMS Level Note Settling Times for Linear RC Filter The dB output of the MX536A/MX636 originates in the squarer/divider section and works well over a 60dB , and reduces AV range. The connection for dB measurements is shown in Figure 10. The dB output has a temperature drift of 0.03dB/°C, and in some applications may need to be compensated ...
Page 10
... RMS converters is proportional to sig- nal level. Figures 11 and 12 represent the frequency response of the converters from 10mV to 7V MX536A and 1mV to 1V for the MX636, respectively. The dashed lines indicate the upper frequency limits for 1%, 10%, and ±3dB of reading additional error. ...
Page 11
... BUF 7 Figure 10. dB Connection 10 7V INPUT RMS INPUT RMS 0.1 100mV RMS INPUT 0.01 10mV RMS INPUT 1k 10k 100k FREQUENCY (Hz) Figure 11. MX536A High-Frequency Response ______________________________________________________________________________________ True RMS-to-DC Converters OUT 12 2.5V MX580J 11 R1 ZERO dB 10 GROUND 9 8 LINEAR RMS R5 OUTPUT 10% ± ...
Page 12
... COM LIN dB SCALE SCALE DIGIT R15 C6 LCD 1M 0.01 F DISPLAY N. N.C. S MX536A N.C. AV MX636 COMMON BUF IN I OUT N. N.C. SO TEMP. RANGE PIN-PACKAGE 0°C to +70°C 14 CERDIP 0°C to +70°C 16 Wide SO 0° ...