250 MHz, Voltage Output 4-Quadrant Multiplier

250 MHz, Voltage Output,

4-Quadrant Multiplier

AD835 Data Sheet

FEATURES FUNCTIONAL BLOCK DIAGRAM Simple: basic function is W = XY + Z

Complete: minimal external components required

Very fast: Settles to 0.1% of full scale (FS) in 20 ns

DC-coupled voltage output simplifies use

High differential input impedance X, Y, and Z inputs

Low multiplier noise: 50 nV/√Hz X1 AD835 X = X1 – X2 X2

XY

+ XY + Z X1 W OUTPUT + Y2 Y = Y1 – Y2

Z INPUT APPLICATIONS 00883-001 Y1 Figure 1. Very fast multiplication, division, squaring

Wideband modulation and demodulation

Phase detection and measurement

Sinusoidal frequency doubling

Video gain control and keying

Voltage-controlled amplifiers and filters GENERAL DESCRIPTION PRODUCT HIGHLIGHTS The AD835 is a complete four-quadrant, voltage output analog

multiplier, fabricated on an advanced dielectrically isolated

complementary bipolar process. It generates the linear product

of its X and Y voltage inputs with a −3 dB output bandwidth of

250 MHz (a small signal rise time of 1 ns). Full-scale (−1 V to

+1 V) rise to fall times are 2.5 ns (with a standard RL of 150 Ω),

and the settling time to 0.1% under the same conditions is …