Datasheet

ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
______________________________________________________________________________________ 23
Figure 3. Level Detector—By using the ICL7612 in these appli-
cations, the circuits will follow rail-to-rail inputs.
+
-
V
IN
V
OUT
TO CMOS OR
LPTTL LOGIC
100kΩ
1MΩ
+5 +5
Figure 4. Photocurrent Integrator—Low-leakage currents allow
integration times up to several hours.
ICL7611
+
+-
-
1µF
IH5040
V
OUT
Figure 5. Precise Triangle/Square Wave Generator—The fre-
quency and duty cycle are virtually independent of power sup-
ply.
+
-
+
-
1MΩ
1MΩ
880kΩ
DUTY CYCLE
1
⁄2
ICL7621
1
⁄2
ICL7621
V- V+
Figure 6. Averaging AC to DC Converter—Recommended for
Maxim’s ICL7106/ICL7107/ICL7109 A/D Converters.
1
⁄
2
ICL7621
+
-
1
⁄
2
ICL7621
-
+
10µF
2.2MΩ 20kΩ
1MΩ
20kΩ
1.8kΩ = 5%
SCALE
ADJUST
10kΩ
0.05µF
V
IN
COMMON
V
ON
TO
SUCCEEDING
INPUT
STAGE
V
OL
Figure 7. Burn-In and Life Test Circuit
Figure 8. Input Guard for TO-99
V+
I
O
COMP
OUT
V-
+15V
+15V
10kΩ
10kΩ
100Ω
NOTE 1
NOTE 2
NOTES:
1. ICL7611, 7612, 7616, 7631, 7632
2. ICL7611, 7612, 7616, 7621, 7622, 7631, 7641, 7642
BOTTOM VIEW
I
O
SET
V
8
1
3
5
7
4
2
6
V+
OUTPUT
GUARD
INPUTS