ICL7634 Maxim, ICL7634 Datasheet - Page 23
ICL7634
Manufacturer Part Number
ICL7634
Description
The ICL761X–ICL764X family of monolithic CMOS op amps combine ultra-low input current with low-power operation over a wide supply voltage range
Manufacturer
Maxim
Datasheet
1.ICL7611.pdf
(26 pages)
- Current page: 23 of 26
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Figure 3. Level Detector—By using the ICL7612 in these appli-
cations, the circuits will follow rail-to-rail inputs.
Figure 5. Precise Triangle/Square Wave Generator—The fre-
quency and duty cycle are virtually independent of power sup-
ply.
Figure 7. Burn-In and Life Test Circuit
NOTES:
1. ICL7611, 7612, 7616, 7631, 7632
2. ICL7611, 7612, 7616, 7621, 7622, 7631, 7641, 7642
V
IN
100kΩ
+
-
ICL7621
+5
1
⁄
2
______________________________________________________________________________________
10kΩ
+15V
V-
+
-
1MΩ
880kΩ
+5
10kΩ
1MΩ
DUTY CYCLE
1MΩ
-
+
+15V
V+
V-
ICL7621
V+
1
100Ω
⁄
2
I
O
NOTE 1
COMP
OUT
V
TO CMOS OR
LPTTL LOGIC
OUT
NOTE 2
Single/Dual/Triple/Quad
Figure 4. Photocurrent Integrator—Low-leakage currents allow
integration times up to several hours.
Figure 6. Averaging AC to DC Converter—Recommended for
Maxim’s ICL7106/ICL7107/ICL7109 A/D Converters.
Figure 8. Input Guard for TO-99
Operational Amplifiers
V
COMMON
IN
0.05µF
BOTTOM VIEW
10kΩ
OUTPUT
+
-
ICL7621
2.2MΩ
1
⁄
2
10µF
V+
V
5
6
-
ICL7611
+
-
1.8kΩ = 5%
1µF
ADJUST
SCALE
IH5040
+
4
7
GUARD
3
8
+
-
20kΩ
20kΩ
ICL7621
1
2
1
⁄
2
I
O
SET
1MΩ
TO
SUCCEEDING
INPUT
STAGE
V
OUT
V
V
ON
OL
23
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