MLT04

FUNCTIONAL BLOCK DIAGRAM

18-Lead Epoxy DIP (P Suffix)

18-Lead Wide Body SOIC (S Suffix)

REV. B

GENERAL DESCRIPTION

The MLT04 is a complete, four-channel, voltage output analog

multiplier packaged in an 18-pin DIP or SOIC-18. These complete

multipliers are ideal for general purpose applications such as voltage

controlled amplifiers, variable active filters, “zipper” noise free

audio level adjustment, and automatic gain control. Other applica-

tions include cost-effective multiple-channel power calculations

(I

× V), polynomial correction generation, and low frequency

modulation. The MLT04 multiplier is ideally suited for generating

complex, high-order waveforms especially suitable for geometry

correction in high-resolution CRT display systems.

FEATURES

Four Independent Channels

Voltage IN, Voltage OUT

No External Parts Required

8 MHz Bandwidth

Four-Quadrant Multiplication

Voltage Output; W = (X

× Y)/2.5 V

0.2% Typical Linearity Error on X or Y Inputs

Excellent Temperature Stability: 0.005%

±2.5 V Analog Input Range

Operates from

±5 V Supplies

Low Power Dissipation: 150 mW typ

Spice Model Available

APPLICATIONS

Geometry Correction in High-Resolution CRT Displays

Waveform Modulation & Generation

Voltage Controlled Amplifiers

Automatic Gain Control

Modulation and Demodulation

Fabricated in a complementary bipolar process, the MLT04

includes four 4-quadrant multiplying cells which have been laser-

trimmed for accuracy. A precision internal bandgap reference

normalizes signal computation to a 0.4 scale factor. Drift over

temperature is under 0.005%/

°C. Spot noise voltage of 0.3 µV/√Hz

results in a THD + Noise performance of 0.02% (LPF = 22 kHz)

for the lower distortion Y channel. The four 8 MHz channels

consume a total of 150 mW of quiescent power.

The MLT04 is available in 18-pin plastic DIP, and SOIC-18

surface mount packages. All parts are offered in the extended

industrial temperature range (–40

°C to +85°C).

Figure 2. THD + Noise vs. Frequency

Figure 1. Gain & Phase vs. Frequency Response

100

1

0.01

10

100

1M

100k

10k

1k

0.1

10

FREQUENCY – Hz

V

CC

= +5V

V

EE

= –5V

T

A

= +25°C

THDX: X = 2.5VP, Y = +2.5V DC

THDY: Y = 2.5VP, X = +2.5V DC

LPF = 500kHz

1

2

3

4

5

6

7

8

9

18

17

16

15

14

13

12

11

10

MLT-04

18

17

16

15

14

13

12

11

10

4

1

2

3

5

6

7

8

9

MLT04

W4

GND4

X4

V

EE

Y4

Y3

X3

GND3

W3

W1

GND1

X1

Y1

V

CC

Y2

X2

GND2

W2

W = (X

0

1k

10k

100M

10M

1M

100k

20

40

–40

–20

FREQUENCY – Hz

0

90

–90

V

V

T

X & Y MEASUREMENTS

SUPERIMPOSED:

X = 100mV RMS, Y = 2.5V DC

Y = 100mV RMS, X = 2.5V DC

Av (X OR Y)

Ø (X OR Y)

8.9MHz

–3dB

One Technology Way, P.O. Box 9106, Norwood. MA 02062-9106, U.S.A.

Tel: 617/329-4700

Fax: 617/326-8703

a

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, nor for any infringements of patents or other rights of third parties

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

Four-Channel, Four-Quadrant

Analog Multiplier