ICL7106/7107
Description
The ICL7106 and ICL7107 are high performance,low power 3
1
/
2
digit A/D converters. Included are seven
segment decoders, display drivers, a reference, and a clock. The ICL7106 is designed to interface with a
liquid crystal display (LCD) and includes a multiplexed backplane drive, the ICL7107 will directly drive an
instrument size light emitting diode (LED) display. The ICL7106 and ICL7107 bring together a combination of
high accuracy, versatility, and true economy. True differential inputs and reference are useful in all systems, but
give the designer an uncommon advantage when measuring load cells, strain gauges and other bridge type
transducers. Finally he true economy of single power Supply operation ( ICL7106 ),
enables a high performance panel meter to be built with the addition of only 10 passive
display.
Components and
a
ICL7106, ICL7107
TOP VIEW
Features
•
Guaranteed Zero Reading for 0V input on All Scales
•
True Polarity at Zero for Precise Null Detection
(1’
s)
V+
D1
C1
B1
A1
F1
G1
E1
D2
C2
(10’
s)
B2
A2
F2
E2
D3
(100’
s)
B3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40 OSC 1
39 OSC 2
38 OSC 3
37 TEST
36 REF HI
35 REF LO
34 C
REF
+
C
REF
-
33 COMMON
32 IN HI
31 IN LO
30 A-Z
29 BUFF
28 INT
27 V-
s)
26 G2 (10’
25 C3
24 A3
23
22 G3
21 BP/GND
•
True Differential input and Reference, Direct Display
•
Drive
- LCD ICL7106
- LED ICL7107
•
Low Noise-Less Than 15 uVp-p
•
On Chip Clock and Reference
•
Low Power DissipationTypically Less Than 10mW
•
No Additional Active Circuits Required
•
New Small Outline Surface Mount Package Available
-
F3
E3
(1000) AB4
(MINUS)
POL
Absolute Maximum Ratings
Supply Voltage
ICL7106, V+ to V-.......................................................15V
ICL7107, V+ to GND...................................................6V
ICL7107, V- to GND....................................................-9V
Analog input Voltage (Either input) (Note 1)..................V+ to V-
Reference input Voltage (Either input)...........................V+ to V-
Clock input
ICL7106......................................................TEST to V+
ICL7107.......................................................GND to V+
BEIJING ESTEK ELECTRONICS CO.,LTD
1
ESTEK [ Estek Electronics Co. Ltd ]
