HA1-2556/883 INTERSIL [Intersil Corporation], HA1-2556/883 Datasheet - Page 18

• Manufacturer Part Number: HA1-2556/883
• Description: Wideband Four Quadrant Analog Multiplier (Voltage Output)
• Manufacturer: INTERSIL [Intersil Corporation]

DESIGN INFORMATION
The information contained in this section has been developed through characterization by Intersil Semiconductor and is for use as
application and design information only. No guarantee is implied.
Values for
Sine Function Generators
Similar functions can be formulated to approximate a SINE
function converter as shown in Figure 22. With a linearly
changing (0 to 5V) input the output will follow 0
sine function (0 to 5V) output. This configuration is theoreti-
cally capable of 2.1% maximum error to full scale.
By adding a second HA-2556 to the circuit an improved fit
may be achieved with a theoretical maximum error of 0.5%
as shown in Figure 23. Figure 23 has the added benefit that
it will work for positive and negative input signals. This
makes a convenient triangle ( 5V input) to sine wave ( 5V
output) converter.
V
V
OUT
for; 0V
where:
IN
V
0.6082
ROOTS - FIGURE 19
OUT
0.5
0.6
0.7
0.8
0.9
1.0
M
FIGURE 22. SINE-FUNCTION GENERATOR
=
=
to give a desired M root or power are as follows:
VIN
V
IN
---------------- -
R3
NC
NC
NC
-V
--------------------------------------- -
R4
5V
+
5 0.05
0.6082
1
R4
0.25
0.50
0.70
0.85
1
2
3
4
5
6
7
8
0
1
–
+
-
0.1284V
REF
Y
;
–
HA-2556
644
R3
0.05V
max theoretical error = 2.1%FS
=
+
5 0.1284
-
---------------- -
R5
IN
X
Z
IN
POWERS - FIGURE 20
R6
+
-
+
-
+
1.0
1.2
1.4
1.6
1.8
2.0
M
16
15
14
13
12
11
10
9
R6
+V
NC
NC
NC
5sin
=
R4
1K
(Continued)
- -
2
---------------- -
R1
o
262
470
R2
R1
to 90
R2
V
------ -
+
0.75
0.15
5
IN
0.5
0.3
1
0
R2
1410
o
470
R6
R5
HA2556
of a
8-24
Further Reading
1. Pacifico Cofrancesco, “RF Mixers and ModulatorsMade
2. Richard Goller, “IC Generates Nonintegral Roots” Elec-
V
V
IN
OUT
with a Monolithic Four-Quadrant Multiplier” Microwave
Journal, December 1991 pg. 58 - 70.
tronic Design, December 3, 1992.
FIGURE 23. BIPOLAR SINE-FUNCTION GENERATOR
-5V
=
V
IN
X
Y
X
Y
--------------------------------------------------- -
3.18167
HA-2556
+
+
-
-
5V
23.1K
5V
V
IN
OUT
Z
10K
Z
–
+
+
-
max theoretical error = 0.5%FS
0.05494V
0.0177919V
Spec Number
X
Y
X
Y
IN
3
HA-2556
+
+
-
-
IN
2
71.5K
V
OUT
Z
Z
5
+
-
sin
511063-883
- -
2
5.71K
10K
V
------- -
5
IN
V
OUT