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MPY634KP-MPY634KPG4-MPY634KU
Wide Bandwidth Precision Analog Multiplier 14-PDIP
MPY634SBFS017A – DECEMBER 1995 – REVISED DECEMBER 2004
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
FEA TURES 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
DESCRIPTIONThe 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. VOUT
–VS
+VS VOUT = A – (Z1 – Z2)
Transfer Function
Precision
Output
Op Amp
Wide Bandwidth
PRECISION ANALOG MULTIPLIER
