MLT04 Datasheet, PDF (1/12 Pages) Analog Devices – Four-Channel, Four-Quadrant Analog Multiplier

a
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
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.
Four-Channel, Four-Quadrant
Analog Multiplier
MLT04
FUNCTIONAL BLOCK DIAGRAM
18-Lead Epoxy DIP (P Suffix)
18-Lead Wide Body SOIC (S Suffix)
W1 1
GND1 2
X1 3
Y1 4
V_CC 5
Y2 ₆
X2 7
GND2 8
W2 9
MMLL_123456789TT_876543210-0044
W = (X • Y)/2.5V
18 W4
17 _GND4
16 X4
15 _Y4
14 V_EE
13 _Y3
12 X3
11 GND3
10 W3
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).
40
V_CC = +5V
V_EE = –5V
20
T_A = +25°C
0
90
8.9MHz
Av (X OR Y)
–3dB
0
–20
X & Y MEASUREMENTS
SUPERIMPOSED:
X = 100mV RMS, Y = 2.5V DC
–40 _{Y = 100mV RMS, X = 2.5V DC}
Ø (X OR Y)
1k
10k
100k
1M
10M
FREQUENCY – Hz
–90
100M
Figure 1. Gain & Phase vs. Frequency Response
100
V_CC = +5V
10
V_EE = –5V
T_A = +25°C
1
LPF = 500kHz
THDX: X = 2.5VP, Y = +2.5V DC
0.1
THDY: Y = 2.5VP, X = +2.5V DC
0.01
10
100
1k
10k
100k
1M
FREQUENCY – Hz
Figure 2. THD + Noise vs. Frequency
REV. B
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