ICL7106, ICL7107, ICL7107S
Typical Applications (Continued)
TO PIN 1
TO PIN 1
100kΩ
V+
OSC 1 40
OSC 2 39
OSC 3 38
TEST 37
OSC 1 40
OSC 2 39
OSC 3 38
TEST 37
100kΩ
SCALE
100pF
100pF
FACTOR
ADJUST
REF HI 36
REF LO 35
REF HI 36
REF LO 35
22kΩ
100kΩ 1MΩ
100kΩ 220kΩ
C
C
34
33
C
C
34
33
REF
REF
REF
REF
0.1µF
0.1µF
COMMON 32
IN HI 31
IN LO 30
A-Z 29
COMMON 32
IN HI 31
IN LO 30
A-Z 29
BUFF 28
INT 27
V - 26
ZERO
ADJUST
SILICON NPN
MPS 3704 OR
SIMILAR
0.01µF
0.47µF
47kΩ
0.47µF
47kΩ
BUFF 28
INT 27
9V
0.22µF
0.22µF
V - 26
G2 25
G2 25
C3 24
C3 24
TO DISPLAY
TO DISPLAY
A3 23
A3 23
G3 22
G3 22
GND 21
BP 21
TO BACKPLANE
A silicon diode-connected transistor has a temperature coefficient of
about -2mV/°C. Calibration is achieved by placing the sensing
transistor in ice water and adjusting the zeroing potentiometer for a
000.0 reading. The sensor should then be placed in boiling water and
the scale-factor potentiometer adjusted for a 100.0 reading.
The resistor values within the bridge are determined by the desired
sensitivity.
FIGURE 17. ICL7107 MEASURING RATIOMETRIC VALUES OF QUAD
LOAD CELL
FIGURE 18. ICL7106 USED AS A DIGITAL CENTIGRADE
THERMOMETER
FN3082 Rev 9.00
October 24, 2014
Page 13 of 17
RENESAS [ RENESAS TECHNOLOGY CORP ]
