hi7131 Intersil Corporation, hi7131 Datasheet - Page 3

• Manufacturer Part Number: hi7131
• Description: 3 1/2 Digit, Low Power, High Cmrr, Lcd/led Display-type A/d Converters
• Manufacturer: Intersil Corporation

Critical Components General Specifications:
1. C
2. C
REFERENCE
polypropylene or similar
EXTERNAL
EXTERNAL
INT
AZ
EXTERNAL
, C
: Low dielectric absorption capacitor,
INPUT
CLOCK
REF
, C
IN
: Low leakage capacitors
ANALOG
INPUT
R
IN
C
1M
VREF
FIGURE 89. TYPICAL APPLICATION CIRCUIT
C
C
R
C
INT
IN
AZ
INT
C
1 F
REF
0.01 F
FIGURE 90. TEST CIRCUIT
0.047 F
0.47 F
0.1 F
180K
HI7131, HI7133
A-Z
BUFF
INT
IN HI
IN LO
COMMON
40
39
38
37
36
35
34
33
32
31
30
29
28
27
3-1828
DUT
OSC 1
OSC 2
OSC 3
TEST
REF HI
REF LO
C
C
COMMON
IN HI
IN LO
A-Z
BUFF
INT
REF
REF
HI7131, HI7133
+
-
REF LO
C
REF HI
C
OSC1
OSC2
OSC3
REF
REF
V+
BP/GND
V-
+
-
AB4
POL
G1
G3
G2
V+
D1
C1
B1
A1
E1
D2
C2
B2
A2
E2
D3
B3
E3
A3
C3
F1
F2
F3
V-
LCD/LED
DISPLAY
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
1
1
2
3
4
5
6
7
8
9
+5V
-5V
0.47 F
0.47 F
9V
C
C
C
LCD/LED
DISPLAY
IN
REF
INT
LOGIC
TEST
AND
= 0.01 F
= 0.047 F
= 0.1 F
C
C
R
R
AZ
VRH
INT
IN
= 0.47 F
= 1M
= 180k
=1 F