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MPY634

SBFS017A – DECEMBER 1995 – REVISED DECEMBER 2004

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PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

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FEATURES

● WIDE BANDWIDTH: 10MHz typ

● ±0.5% MAX FOUR-QUADRANT

ACCURACY

● INTERNAL WIDE-BANDWIDTH OP AMP

● EASY TO USE

● LOW COST

APPLICATIONS

● PRECISION ANALOG SIGNAL

PROCESSING

● MODULATION AND DEMODULATION

● VOLTAGE-CONTROLLED AMPLIFIERS

● VIDEO SIGNAL PROCESSING

● 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 maintain-

ing 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 mul-

tipliers and balanced modulator circuits. It is

capable of performing frequency mixing, balanced modula-

tion, 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

Multiplier

Core

Voltage

Reference

and Bias

0.75 Atten

OUT

–V

– X

)(Y

– Y

)

OUT

= A – (Z

– Z

)

Transfer Function

Precision

Output

Op Amp

Wide Bandwidth

PRECISION ANALOG MULTIPLIER

OBSOLETE

Summary of content (15 pages)

PAGE 1
OBSOLETE MPY634 SBFS017A – DECEMBER 1995 – REVISED DECEMBER 2004 Wide Bandwidth PRECISION ANALOG MULTIPLIER FEATURES DESCRIPTION ● WIDE BANDWIDTH: 10MHz typ ● ±0.5% MAX FOUR-QUADRANT ACCURACY ● INTERNAL WIDE-BANDWIDTH OP AMP ● EASY TO USE ● LOW COST The MPY634 is a wide bandwidth, high accuracy, fourquadrant analog multiplier.
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SPECIFICATIONS ELECTRICAL At TA = +25°C and VS = ±15VDC, unless otherwise noted. MPY634KP/KU MODEL MULTIPLIER PERFORMANCE Transfer Function Total Error(1) (–10V ≤ X, Y ≤ +10V) TA = min to max Total Error vs Temperature Scale Factor Error (SF = 10.
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SPECIFICATIONS (CONT) ELECTRICAL At TA = +25°C and VS = ±15VDC, unless otherwise noted. MPY634KP/KU MODEL MIN SQUARE-ROOTER PERFORMANCE Transfer Function (Z1 ≤ Z2) Total Error(1) (1V ≤ Z ≤ 10V) TYP MPY634AM MAX √10V (Z2 – Z1) +X2 ±8 4 TEMPERATURE RANGE Specification Storage * ±0.5 ±1.0 ±15 –40 –40 MPY634SM UNITS √10V (Z2 – Z1) +X2 ±2.
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TYPICAL PERFORMANCE CURVES At TA = +25°C, VS = ±15VDC, unless otherwise noted.
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TYPICAL PERFORMANCE CURVES (CONT) TA = +25°C, VS = ±15VDC, unless otherwise noted.
PAGE 6
RSF = 5.4kΩ SF 10 – SF Internal device tolerances make this relationship accurate to within approximately 25%. Some applications can benefit from reduction of the SF by this technique. The reduced input bias current, noise, and drift achieved by this technique can be likened to operating the input circuitry in a higher gain, thus reducing output contributions to these effects. Adjustment of the scale factor does not affect bandwidth.
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respectively. Feedback is applied to the Y2 input, and Y1 is normally referenced to output ground. Alternatively, as the transfer function implies, an input applied to Y1 can be summed directly into VOUT. Since the feedback connection is made to a multiplying input, the effective gain of the output op amp varies as a function of the denominator input voltage. Therefore, the bandwidth of the divider function is proportional to the denominator voltage (see Typical Performance Curves).
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Modulation Input, ±EM X1 +VS X2 Out 18kΩ MPY634 SF Z1 Y1 Z2 10kΩ 4.7kΩ –VS X2 Out +15V VOUT = 1 ± (EM/10V) EC sin ωt SF Z1 Y1 Z2 Y2 –VS Carrier Input EC sin ωt 3kΩ Y2 +VS MPY634 VOUT = (10V) sinθ Where θ = (π/2) (Eθ /10V) 4.3kΩ Input, Eθ 0 to +10V X1 +15V –15V –15V By injecting the input carrier signal into the output through connection to the Z2 input, conventional amplitude modulation is achieved.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device MPY634KU/1K Package Package Pins Type Drawing SOIC DW 16 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 1000 330.0 16.4 Pack Materials-Page 1 10.75 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 10.7 2.7 12.0 16.
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PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) MPY634KU/1K SOIC DW 16 1000 367.0 367.0 38.
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MECHANICAL DATA MMBC006 – MARCH 2001 LME (O–MBCY–W10) METAL CYLINDRICAL PACKAGE ø 0.370 (9,40) 0.335 (8,51) ø 0.335 (8,51) 0.305 (7,75) 0.040 (1,02) 0.010 (0,25) 0.185 (4,70) 0.165 (4,19) 0.040 (1,02) 0.010 (0,25) 0.500 (12,70) MIN Seating Plane ø ø 0.021 (0,53) 0.016 (0,41) 0.160 (4,06) 0.120 (3,05) 0.120 (3,05) 0.110 (2,79) 4 3 0.034 (0,86) 0.028 (0,71) 36° 5 2 6 1 10 7 9 8 0.230 (5,84) 0.045 (1,14) 0.029 (0,74) 4202488/A 03/01 NOTES: A. B. C. D. E.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46C and to discontinue any product or service per JESD48B. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.