MPY634 BURR-BROWN | Alldatasheet

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Technical content

FEATURES

l WIDE BANDWIDTH: 10MHz typ l ±0.5% MAX FOUR-QUADRANT ACCURACY l INTERNAL WIDE-BANDWIDTH OP AMP l EASY TO USE l LOW COST

APPLICATIONS

l MODULATION AND DEMODULATION l VOLTAGE-CONTROLLED AMPLIFIERS l VIDEO SIGNAL PROCESSING l VOLTAGE-CONTROLLED FILTERS AND OSCILLATORS

DESCRIPTION

The MPY634 is a wide bandwidth, high accuracy, four-quadrant analog multiplier. Its accurately laser- trimmed multiplier characteristics make it easy to use in a wide variety of applications with a minimum of external parts, often eliminating all external trimming. Its differential X, Y, and Z inputs allow configuration as a multiplier, squarer, divider, square-rooter, and other functions while maintaining high accuracy. The wide bandwidth of this new design allows signal processing at IF, RF, and video frequencies. The internal output amplifier of the MPY634 reduces design complexity compared to other high frequency multipliers and balanced modulator circuits. It is capable of performing frequency mixing, balanced modulation, and demodulation with excellent carrier rejection. An accurate internal voltage reference provides precise setting of the scale factor. The differential Z input allows user-selected scale factors from 0.1 to 10 using external feedback resistors. V-I V-I V-I SF Multiplier Core Voltage Reference and Bias

0.75 Atten

–VS +V S (X1 – X2)(Y1 – Y2) SF VOUT = A – (Z1 – Z2) Transfer Function Precision Output Op Amp MPY634 International Airport Industrial Park • Mailing Address: PO Box 11400 • Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd. • Tucson, AZ 85706 Tel: (520) 746-1111 • Twx: 910-952-1111 • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132 © 1985 Burr-Brown Corporation PDS-636D Printed in U.S.A. December, 1995 Wide Bandwidth PRECISION ANALOG MULTIPLIER

At TA = +25°C and VS = ±15VDC, unless otherwise noted. MPY634KP/KU MPY634AM MPY634BM MPY634SM (Z2 – Z1) (X1 – X2)10V + Y1 10V + Z2 (X1 – X2)2 + Z210V MODEL MIN TYP MAX MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS MULTIPLIER PERFORMANCE Transfer Function * * * Total Error(1) TA = min to max ±2.5 ±1.5 ±1.0 ±2.0 % Total Error vs Temperature ±0.03 ±0.022 ±0.015 ±0.02 %/ °C Scale Factor Error Temperature Coefficient of Scaling Voltage ±0.02 ±0.01 ±0.01 * %/ °C Supply Rejection (±15V ±1V) * ±0.01 * * % Nonlinearity Feedthrough(3) X (Y Nulled, X = 20Vp-p, 50Hz) * ±0.3 ±0.15 ±0.3 * % Y (X Nulled, Y = 20Vp-p, 50Hz) * ±0.01 * ±0.1 * % Both Inputs (500kHz, 1Vrms) Unnulled 40 (4) 50 45 55 * 60 * * dB Nulled 55 (4) 60 55 65 60 70 * * dB Output Offset Voltage ±50 ±100 ±5 ±30 * ±15 * * mV Output Offset Voltage Drift * ±200 ±100 * ±500 µV/°C DYNAMICS Small Signal BW, (VOUT = 0.1Vrms) 6 (4) * 8 10 * * 6 * MHz 1% Amplitude Error (CLOAD = 1000pF) * 100 * * kHz Slew Rate (VOUT = 20Vp-p) * 20 * * V/ µs Settling Time (to 1%, ΔVOUT = 20V) * 2 * * µs NOISE Noise Spectral Density: SF = 10V * 0.8 * * µV/√Hz Wideband Noise: f = 10Hz to 5MHz * 1 * * mVrms f = 10Hz to 10kHz * 90 * * µVrms OUTPUT Output Voltage Swing * ±11 * * V Output Impedance (f ≤ 1kHz) * 0.1 * * Ω Output Short Circuit Current (RL = 0, TA = min to max) * 30 * * mA Amplifier Open Loop Gain INPUT AMPLIFIERS (X, Y and Z) Input Voltage Range Differential VIN (VCM = 0) * ±12 * * V Common-Mode V IN (VDIFF = 0) * ±10 * * V (see Typical Performance Curves) Offset Voltage X, Y ±25 ±100 ±5 ±20 ±2 ±10 * * mV Offset Voltage Drift X, Y 200 100 50 * µV/°C Offset Voltage Z ±25 ±100 ±5 ±30 ±2 ±15 * * mV Offset Voltage Drift Z * 200 100 500 µV/°C CMRR * * 60 80 70 90 * * dB Bias Current * * 0.8 2.0 * * * * µA Offset Current * 0.1 * * 2.0 µA Differential Resistance * 10 * * M Ω DIVIDER PERFORMANCE Transfer Function (X1 > X2)* * * Total Error(1) untrimmed SQUARE PERFORMANCE Transfer Function * * * Total Error (–10V ≤ X ≤ 10V) ±1.2 ±0.6 ±0.3 * %

Transfer Function (Z1 ≤ Z2)* * * Total Error(1) (1V ≤ Z ≤ 10V) ±2.0 ±1.0 ±0.5 * % POWER SUPPLY Supply Voltage: Rated Performance * ±15 * * VDC Supply Current, Quiescent * * 4 6 * * * * mA TEMPERATURE RANGE Specification * (5) *(5) –25 +85 * * –55 +125 °C –VS SF SOIC: MPY634KUDIP: MPY634KPTO-100: MPY634AM/BM/SM 6 Z2 Out +VS X

1 Input

+VS NC Output Z S X +V S NC Output Z S NC SPECIFICATIONS (CONT ) ELECTRICAL At TA = +25°C and VS = ±15VDC, unless otherwise noted. MPY634KP/KU MPY634AM MPY634BM MPY634SM MODEL MIN TYP MAX MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS √10V (Z2 – Z1) +X2 * Specification same as for MPY634AM. component due to nonlinearity; excludes effect of offsets. (4) KP grade only. (5) KP grade only. 0°C to +70°C for KU grade. PIN CONFIGURATIONS ABSOLUTE MAXIMUM RATINGS PARAMETER MPY634AM/BM MPY634KP/KU MPY634SM Power Supply Voltage ±18 * ±20 Power Dissipation 500mW * * Output Short-Circuit to Ground Indefinite * * Input Voltage ( all X, Y and Z) ±VS ** Temperature Range: Operating –25 °C/+85°C * –55 °C/+125°C Storage –65 °C/+150°C –40 °C/+85°C* Lead Temperature (soldering, 10s) +300 °C* * SOIC ‘KU’ Package +260 °C * Specification same as for MPY634AM/BM. Basic Model Number Performance Grade(1) K: –25°C to +85°C (‘U’ package 0°C to +70°C) A: –25°C to +85°C B: –25°C to +85°C S: –55°C to +125°C Package Code M: TO-100 Metal P: Plastic 14-pin DIP U: 16-pin SOIC NOTE: (1) Performance grade identifier may not be marked on the SOIC package; a blank denotes “K” grade.

ORDERING INFORMATION

MPY634 ( ) ( ) Top View PACKAGE DRAWING MODEL PACKAGE NUMBER (1) MPY634KP 14-Pin PDIP 010 MPY634KU 16-Pin SOIC 211 MPY634AM TO-100 007 MPY634BM TO-100 007 MPY634SM TO-100 007 NOTE: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix D of Burr-Brown IC Data Book.

PACKAGE INFORMATION

TYPICAL PERFORMANCE CURVES TA = +25°C, VS = ±15VDC, unless otherwise noted. –20 –40 –60 –80 –100 100 1k 10k 1M 10M 100M Frequency (Hz) FEEDTHROUGH vs FREQUENCY Feedthrough Attenuation (dB) 100k X Feedthrough Y Feedthrough –10 –20 –30 1k 10k 100k 1M 10M 100M Frequency (Hz) FREQUENCY RESPONSE AS A MULTIPLIER Output Response (dB) C L = 0pF C L = 1000pF Normal Connection With X10 Feedback Attenuator 10k 1M 10M Frequency (Hz) COMMON-MODE REJECTION RATIO vs FREQUENCY CMRR (dB) 100 100M Typical for all inputs –50 –60 –70 –80 Temperature (°C) FEEDTHROUGH vs TEMPERATURE Feedthrough Attenuation (dB) –20 20 60 100 140–40 0 40 80 120 fY = 500kHz VX = nulled nulled at 25°C –60 1.5 1.25 0.75 0.5 10 100 10k 100k Frequency (Hz) NOISE SPECTRAL DENSITY vs FREQUENCY Noise Spectral Density (µV/√Hz) –20 1k 10k 100k 1M 10M 100M Frequency (Hz) FREQUENCY RESPONSE AS A DIVIDER Output, V0/V2 (dB) VX = 100mVDC VZ = 10mVrms VX = 1VDC VZ = 100mVrms VX = 10VDC VZ = 100mVrms The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant any BURR-BROWN product for use in life support devices and/or systems.

inspection of the transfer function reveals that any VOUT can be created with an infinitesimally small quantity within the brackets. Then, an application circuit can be analyzed by assigning circuit voltages for all X, Y and Z inputs and setting the bracketed quantity equal to zero. For example, the basic multiplier connection in Figure 1, Z 1 = VOUT and Z 2 = 0. The quantity within the brackets then reduces to: – (VOUT – 0) = 0 This approach leads to a simple relationship which can be solved for VOUT to provide the closed-loop transfer function. The scale factor is accurately factory adjusted to 10V and is typically accurate to within 0.1% or less. The scale factor may be adjusted by connecting a resistor or potentiometer between pin SF and the –VS power supply. The value of the external resistor can be approximated by: TYPICAL PERFORMANCE CURVES (CONT) TA = +25°C, VS = ±15VDC, unless otherwise noted. THEORY OF OPERATION The transfer function for the MPY634 is: VOUT = A – (Z1 – Z2) where: A = open-loop gain of the output amplifier (typically 85dB at DC). SF = Scale Factor. Laser-trimmed to 10V but adjustable over a 3V to 10V range using external resistors. X, Y, Z are input voltages. Full-scale input voltage is equal to the selected SF. (Max input voltage = ±1.25 SF). An intuitive understanding of transfer function can be gained by analogy to the op amp. By assuming that the open-loop gain, A, of the output operational amplifier is infinite, SF SF –10 INPUT DIFFERENTIAL-MODE/ COMMON-MODE VOLTAGE –12 12 –5 5 10–10 Specified Accuracy VS = ±15V Functional Derated Accuracy VCM VDIFF 81 0 1 2 1 6 1 8 2 0 Positive or Negative Supply (V) INPUT/OUTPUT SIGNAL RANGE vs SUPPLY VOLTAGES Peak Positive or Negative Signal (V) Output, RL ≥ 2kΩ All inputs, SF = 10V 800 700 600 500 400 300 200 100 –20 0 60 100 140 Temperature (°C) BIAS CURRENTS vs TEMPERATURE (X,Y or Z Inputs) Bias Current (nA) 20–40 40 80 120 Scaling Voltage = 10V Scaling Voltage = 3V –60