HA4P2425-5 Intersil Corporation, HA4P2425-5 Datasheet - Page 4

• Manufacturer Part Number: HA4P2425-5
• Description: 3.2s Sample and Hold Amplifiers
• Manufacturer: Intersil Corporation

Test Circuits and Waveforms
Schematic Diagram
S/H
CONTROL
GND
R
P
CONTROL
NOTE: Measure the slope of the output during hold, V/ t,
D
OUTPUT
Q
1
3
Q
Q
S/H
Q
Q
12
10
7
8
and compute drift current from: I
Q
FIGURE 3. DRIFT CURRENT TEST
105
Q
5
Q
Q
106
Q
Q
82
Q
Q
R
16
13
Q
14
Q
Q
Q
18
11
103
17
9
11
Q
83
Q
19
Q
Q
Q
89
90
Q
91
2
Q
Q
15
Q
22
t
21
D
Q
Q
Q
Q
4
= C
23
20
6
Q
(Continued)
Q
25
24
Q
H
26
V
+IN
SAMPLE
V/ t.
HA-2420, HA-2425
Q
HOLD
87
Q
27
Q
Q
Q
31
R
39
42
13
Q
Q
Q
R
29
33
35
5-4
1
OFFSET ADJ.
Q
Q
38
Q
Q
NOTE: Compute hold mode feedthrough attenuation from the formula:
SINE WAVE
INPUT
34
40
43
FIGURE 4. HOLD MODE FEEDTHROUGH ATTENUATION
S/H CONTROL INPUT
Q
Q
R
32
30
2
Q
Q
-IN
Where V
sinewave during the hold mode.
41
44
Feedthrough Attenuation
Q
IN2
IN1
IN3
IN4
IN5
IN6
IN7
IN8
A2
A1
47
Q
Q
Q
Q
83
49
100
Q
56
HI-508A
Q
OUT
+5V
Q
EN
A0
55
MUX
101
45
HOLD = Peak-to-Peak value of output
Q
Q
OUT
48
50
Q
J
51
57
R
Q
GND
121
Q
53
R
C
J
46
7
4
86
V
Q
Q
J
Q
Q
INP-P
60
-IN
+IN
52
54
58
59
=
CONTROL
Q
20
Q
J
62
S/H
63
102
log
HA-2420/2425
Q
Q
Q
J
Q
67
Q
V
--------------------------------- -
61
78
68
V
70
71
O UT
Q
IN
64
HOLD
CAP GND
Q
Q
HOLD
69
HOLD
79
Q
Q
C
65
66
H
Q
C
15pF
Q
Q
OUT
Q
73
3
76
80
R
75
Q
Q
8
81
72
R
Q
14
Q
V+
C
OUT
74
R
R
77
H
V
9
10
V-
O