參數(shù)資料
型號(hào): HA9P2556-9
廠(chǎng)商: Intersil
文件頁(yè)數(shù): 2/18頁(yè)
文件大?。?/td> 0K
描述: IC MUX ANALOG 57MHZ MONO 16-SOIC
標(biāo)準(zhǔn)包裝: 48
功能: 模擬乘法器
位元/級(jí)數(shù): 四象限
封裝/外殼: 16-SOIC(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 16-SOIC
包裝: 管件
10
FN2477.7
April 25, 2013
.
A multiplier can’t do nonintegral roots “exactly”, but it can
yield a close approximation. We can approximate
nonintegral roots with Equations 19 and 20 of the form:
Figure 18 compares the function VOUT = VIN
0.7 to the
approximation VOUT = 0.5VIN
0.5 + 0.5V
IN.
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 VIN
M where M is the desired
nonintegral power or root.
NC
VX + (VGAIN)
V-
VIN
V+
NC
HFA0002
5k
Ω
VOUT
500
Ω
NC
HA-2556
+
-
14
15
16
9
13
12
11
10
1
2
3
4
5
7
6
8
Σ
+ -
REF
Y
X
Z
FIGURE 16. VOLTAGE CONTROLLED AMPLIFIER
0
0.2
0.4
0.6
0.8
1.0
0
0.2
0.4
0.6
0.8
1.0
INPUT (V)
OU
TPU
T
(
V
)
FIGURE 17. EFFECT OF NONINTEGRAL POWERS/ROOTS
X0.7
X0.5
X1.5
X2
V
O
1
α
()V
IN
2
αV
IN
+
=
(EQ. 19)
V
O
1
α
()V
IN
1/2
αV
IN
+
=
(EQ. 20)
FIGURE 19. NONINTEGRAL ROOTS - ADJUSTABLE
0
0.2
0.4
0.6
0.8
1.0
0
0.2
0.4
0.6
0.8
1.0
INPUT (V)
OUT
P
UT
(
V
)
FIGURE 18. COMPARE APPROXIMATION TO NONINTEGRAL
ROOT
X0.7
0.5X0.5+ 0.5X
X
NC
V-
VIN
V+
NC
HA-2556
HA-5127
NC
VOUT
0V
≤ VIN ≤ 1V
0.5
≤ M ≤ 1.0
α
1-
α
+
-
14
15
16
9
13
12
11
10
1
2
3
4
5
7
6
8
Σ
+ -
REF
Y
X
Z
+
-
+
-
+
-
HA-2556
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