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PDF ( 数据手册 , 数据表 ) HA-2556

零件编号 HA-2556
描述 57MHz/ Wideband/ Four Quadrant/ Voltage Output Analog Multiplier
制造商 Intersil Corporation
LOGO Intersil Corporation LOGO 


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HA-2556 数据手册, 描述, 功能
Data Sheet
HA-2556
September 1998 File Number 2477.5
57MHz, Wideband, Four Quadrant,
Voltage Output Analog Multiplier
The HA-2556 is a monolithic, high speed, four quadrant,
analog multiplier constructed in the Intersil Dielectrically
Isolated High Frequency Process. The voltage output
simplifies many designs by eliminating the current-to-voltage
conversion stage required for current output multipliers. The
HA-2556 provides a 450V/µs slew rate and maintains
52MHz and 57MHz bandwidths for the X and Y channels
respectively, making it an ideal part for use in video systems.
The suitability for precision video applications is
demonstrated further by the Y Channel 0.1dB gain flatness
to 5.0MHz, 1.5% multiplication error, -50dB feedthrough and
differential inputs with 8µA bias current. The HA-2556 also
has low differential gain (0.1%) and phase (0.1o) errors.
The HA-2556 is well suited for AGC circuits as well as mixer
applications for sonar, radar, and medical imaging
equipment. The HA-2556 is not limited to multiplication
applications only; frequency doubling, power detection, as
well as many other configurations are possible.
For MIL-STD-883 compliant product consult the
HA-2556/883 datasheet.
Ordering Information
PART NUMBER
HA3-2556-9
HA9P2556-9
HA1-2556-9
TEMP.
RANGE (oC)
PACKAGE
-40 to 85 16 Ld PDIP
-40 to 85 16 Ld SOIC
-40 to 85 16 Ld CERDIP
PKG.
NO.
E16.3
M16.3
F16.3
Pinout
HA-2556
(PDIP, CERDIP, SOIC)
TOP VIEW
GND 1
VREF 2
VYIOB 3
VYIOA 4
VY+ 5
VY- 6
V- 7
VOUT 8
REF
X
Y
+
Σ
-
Z
16 VXIOA
15 VXIOB
14 NC
13 VX+
12 VX-
11 V+
10 VZ-
9 VZ+
Features
• High Speed Voltage Output . . . . . . . . . . . . . . . . . 450V/µs
• Low Multiplication Error . . . . . . . . . . . . . . . . . . . . . . .1.5%
• Input Bias Currents. . . . . . . . . . . . . . . . . . . . . . . . . . . 8µA
• 5MHz Feedthrough. . . . . . . . . . . . . . . . . . . . . . . . . . -50dB
• Wide Y Channel Bandwidth . . . . . . . . . . . . . . . . . . 57MHz
• Wide X Channel Bandwidth . . . . . . . . . . . . . . . . . . 52MHz
• VY 0.1dB Gain Flatness . . . . . . . . . . . . . . . . . . . . 5.0MHz
Applications
• Military Avionics
• Missile Guidance Systems
• Medical Imaging Displays
• Video Mixers
• Sonar AGC Processors
• Radar Signal Conditioning
• Voltage Controlled Amplifier
• Vector Generators
Functional Block Diagram
VX+
+
-
VX-
1/SF
VY+
+
-
VY-
HA-2556
X
VOUT
A
+
-
Y
Z
VZ+
+
-
VZ-
NOTE: The transfer equation for the HA-2556 is:
(VX+ -VX-) (VY+ -VY-) = SF (VZ+ -VZ-),
where SF = Scale Factor = 5V; VX, VY,
VZ = Differential Inputs.
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Copyright © Intersil Corporation 1999







HA-2556 pdf, 数据表
HA-2556
This multiplier has the advantage over other AGC circuits, in
that the signal bandwidth is not affected by the control signal
gain adjustment.
HA-2556
1
NC 2
NC 3
NC 4
VY+ 5
6
V- 7
8
REF
X
Y
+
Σ
-
Z
16 NC
15 NC
14 NC
13
12
11 V+
10
9
1N914
5k
10k
+15V
20k
50
10k
0.1µF
0.01µF
-
+
HA-5127
0.1µF
VOUT
5.6V
FIGURE 15. AUTOMATIC GAIN CONTROL
HA-2556
1
REF
NC 2
16 NC
15 NC
NC 3
14 NC
NC 4
5
6
Y
13 VX + (VGAIN)
X
12
11 V+
V- 7
8
+
Σ
-
Z
10
9
Wave Shaping Circuits
Wave shaping or curve fitting is another class of application
for the analog multiplier. For example, where a nonlinear
sensor requires corrective curve fitting to improve linearity
the HA-2556 can provide nonintegral powers in the range 1
to 2 or nonintegral roots in the range 0.5 to 1.0 (refer to
References). This effect is displayed in Figure 17.
1
0.8
0.6 X0.7
X0.5
0.4
X1.5
0.2 X2
0
0 0.2 0.4 0.6 0.8 1
INPUT (V)
FIGURE 17. EFFECT OF NONINTEGRAL POWERS / ROOTS
A multiplier can’t do nonintegral roots “exactly”, but it can
yield a close approximation. We can approximate
nonintegral roots with equations of the form:
Vo = (1 α)VI2N + αVIN
Vo = (1 α)VI1N2 + αVIN
Figure 18 compares the function VOUT = VIN0.7 to the
approximation VOUT = 0.5VIN0.5 + 0.5VIN.
1
0.8 X0.7
0.6
0.5X0.5+ 0.5X
0.4
VOUT
5k
HFA0002
-
+
500
VIN
FIGURE 16. VOLTAGE CONTROLLED AMPLIFIER
Voltage Controlled Amplifier
A wide range of gain adjustment is available with the Voltage
Controlled Amplifier configuration shown in Figure 16. Here
the gain of the HFA0002 can be swept from 20V/V to a gain
of almost 1000V/V with a DC voltage from 0V to 5V.
0.2
X
0
0 0.2 0.4 0.6 0.8 1
INPUT (V)
FIGURE 18. COMPARE APPROXIMATION TO NONINTEGRAL
ROOT
This function can be easily built using an HA-2556 and a
potentiometer for easy adjustment as shown in Figures 19 and
20. If a fixed nonintegral power is desired, the circuit shown in
Figure 21 eliminates the need for the output buffer amp. These
circuits approximate the function VIMN where M is the desired
nonintegral power or root.
8














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