3
1
/
2
Digit LCD/LED Display A/D
Converters
WS7106 / WS7107
Features
•
Guaranteed Zero Reading for 0V Input on All Scales
•
True Polarity at Zero for Precise Null Detection
• True Differential Input and Reference, Direct Display
Drive
- LCD WS7106, LED WS7107
Description
The WS7106 and WS7107
are high performance, low
power, 3
1
/
2
digit A/D converters. Included are seven seg-
ment decoders, display drivers, a reference, and a clock.
The WS7106
is designed to interface with a liquid crystal dis-
• On Chip Clock and Reference
play (LCD) and includes a multiplexed backplane drive; the
WS
7107 will directly drive an instrument size light emitting
diode (LED) display.
The WS7106 and WS
7107 bring together a combination of
high accuracy, versatility, and true economy.
True differential
inputs and reference are useful in all systems, but give the
desiger an uncommon advantage when measuring load
cells, strain gauges and other bridge type transducers.
Finally, the true economy of single power supply operation
(WS7106), enables a high performance panel meter to built
with the addition of only 10 passive compoents and a disply.
• Low Noise - Less Than 15µV
P-P
• No Additional Active Circuits Required
•
Low Power Dissipation -
Typically Less Than 10mW
Ordering Information
PART NO.
WS7106CPL
WS7107CPL
TEMP.
RANGE (
o
C)
0 to 70
0 to70
PACKAGE
40Ld PDIP
40Ld PDIP
PKG. NO.
E40.6
E40.6
Pinouts
WS7106CPL (PDIP)
WS7107CPL (PDIP)
V+
D1
C1
B1
(1’ s)
A1
F1
G1
E1
D2
C2
(10’ s)
B2
A2
F2
E2
D3
(100’ s)
B3
F3
E3
(1000) AB4
(MINUS)
POL
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
+
33 C
REF
-
32 COMMON
31 IN HI
30 IN LO
29 A-Z
28 BUFF
27 INT
26 V-
25 G2 (10’ s)
24 C3
23 A3
22 G3
21 BP/GND
(100’ s)
Wing Shing Computer Components Co., (H.K.)Ltd.
Homepage:
http://www.wingshing.com
Tel:(852)2341 9276 Fax:(852)2797 8153
E-mail: wsccltd@hkstar.com
WINGS [ WING SHING COMPUTER COMPONENTS ]
