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PDF ICL8212 Data sheet ( Hoja de datos )
| Número de pieza | ICL8212 | |
| Descripción | (ICL8211 / ICL8212) Programmable Voltage Detectors | |
| Fabricantes | Harris Corporation | |
| Logotipo |  |
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ICL8211, ICL8212
SEMICONDUCTOR
April 1994
Programmable Voltage Detectors
Features
Description
• High Accuracy Voltage Sensing and Generation
• Internal Reference 1.15V Typical
• Low Sensitivity to Supply Voltage and Temperature
Variations
• Wide Supply Voltage Range Typ. 1.8V to 30V
• Essentially Constant Supply Current Over Full Supply
Voltage Range
• Easy to Set Hysteresis Voltage Range
• Defined Output Current Limit ICL8211
• High Output Current Capability ICL8212
Applications
• Low Voltage Sensor/Indicator
• High Voltage Sensor/Indicator
• Nonvolatile Out-of-Voltage Range Sensor/Indicator
• Programmable Voltage Reference or Zener Diode
• Series or Shunt Power Supply Regulator
• Fixed Value Constant Current Source
The Harris ICL8211/8212 are micropower bipolar monolithic
integrated circuits intended primarily for precise voltage
detection and generation. These circuits consist of an
accurate voltage reference, a comparator and a pair of
output buffer/drivers.
Specifically, the ICL8211 provides a 7mA current limited out-
put sink when the voltage applied to the ‘THRESHOLD’
terminal is less than 1.15V (the internal reference). The
ICL8212 requires a voltage in excess of 1.15V to switch its
output on (no current limit). Both devices have a low current
output (HYSTERESIS) which is switched on for input
voltages in excess of 1.15V. The HYSTERESIS output may
be used to provide positive and noise free output switching
using a simple feedback network.
Ordering Information
PART NUMBER
ICL8211CPA
ICL8211CBA
ICL8211CTY
ICL8211MTY
(Note 1)
ICL8212CPA
ICL8212CBA
ICL8212CTY
ICL8212MTY
(Note 1)
TEMPERATURE
RANGE
0oC to +70oC
0oC to +70oC
0oC to +70oC
-55oC to +125oC
0oC to +70oC
0oC to +70oC
0oC to +70oC
-55oC to +125oC
PACKAGE
8 Lead Plastic DIP
8 Lead SOlC (N)
8 Pin Metal Can
8 Pin Metal Can
8 Lead Plastic DIP
8 Lead SOlC (N)
8 Pin Metal Can
8 Pin Metal Can
NOTE:
1. Add /883B to part number if 883B processing is required
Pinouts
ICL8211 (PDIP, SOIC)
TOP VIEW
ICL8211 (CAN)
TOP VIEW
NC 1
omHYSTERESIS 2
.cTHRESHOLD 3
heet4UOUTPUT 4
8 V+
7 NC
6 NC
5 GROUND
HYSTERESIS
THRESHOLD 1
8
7 V+
OUTPUT 2
6 NC
NC 3
5 NC
4
GROUND
.DataSCAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper I.C. Handling Procedures.
wwwCopyright © Harris Corporation 1992
7-161
File Number
3184.1
1 page  
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ICL8211, ICL8212
Typical Performance Curves (ICL8211 and ICL8212)
10,000
TA = +25oC
V+ = +10V
1,000
100
ICL8211 OR ICL8212
10
0.0
1.1 1.15 1.2 2.0 3.0 6.0 8.0 10.0
THRESHOLD VOLTAGE (VTH)
(IRREGULAR SCALE)
FIGURE 1. THRESHOLD INPUT CURRENT AS A FUNCTION OF
THRESHOLD VOLTAGE
Typical Performance Curves (ICL8211 ONLY)
0
V+ = +5V
VTH = 1.2V
-5 VHYS = 4.5V
(OR -0.5V WITH RESPECT
TO V+ SUPPLY)
-10
-20
-25
ICL8211 OR ICL8212
-30
-40 -20 0 +20 +40 +60 +80
TEMPERATURE (oC)
FIGURE 2. HYSTERESIS OUTPUT SATURATION CURRENT AS
A FUNCTION OF TEMPERATURE
150
125 VTH = 0.9V
100
TA = +25oC
OUTPUTS OPEN CIRCUIT
75
150
TA = +25oC
125
V+ = +5V
OUTPUTS OPEN
CIRCUIT
100
75
50
25
VTH = 1.3V
0 10 20 30
SUPPLY VOLTAGE
FIGURE 3. SUPPLY CURRENT AS A FUNCTION OF SUPPLY
VOLTAGE
50
25
0
0.0
1.0 1.1 1.15 1.2 2.0
THRESHOLD VOLTAGE (VTH)
(IRREGULAR SCALE)
4.0
FIGURE 4. SUPPLY CURRENT AS A FUNCTION OF THRESH-
OLD VOLTAGE
150
125 VTH = 0.9V
100
12 0
TA = +25oC
V+ = +5V
10
VO = 0.5V
-5
VHYS = V+ - 0.25V
8 -10
75
om50
.cVTH = 1.3V
U25
et40
e-55 -25 +5 +35 +65 +95 +125
h TEMPERATURE oC
SFIGURE 5. SUPPLY CURRENT AS A FUNCTION OF TEMPERA-
ta TURE
6
4 OUTPUT
HYSTERESIS
OUTPUT
-15
-20
2 -25
0
1.12 1.13
1.14
1.15
8mV
1.16 1.17
-30
1.18
THRESHOLD VOLTAGE
FIGURE 6. OUTPUT SATURATION CURRENTS AS A FUNC-
TION OF THRESHOLD VOLTAGE
www.Da 7-165
5 Page 
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ICL8211, ICL8212
R3
1
R2 2
3
4
R1
8
7
6
5
V+
VO
Low trip voltage
VTR1 = (R1 + R2) x 1.15 + 0.1V
R1
High trip voltage
volts
VTR2 =
(R1 + R2 + R3)
R1
x 1.15V
FIGURE 27A.
V+
RQ
RS
RP
1
2
3
4 FIG 7
8
7
6
5
VO
R2
150kΩ
R3
(NOTE 1)
18
2 ICL8211 7
36
45
LED
LAMP
NOTE 1. R3 OPTIONAL
FIGURE 28. LOW VOLTAGE BATTERY INDICATOR
R3 S1
R2
R1
1
2
3
4
8
7 RL
6
5
V+
OUTPUT
Low trip voltage
VTR1 =
RQRS
(RQ + RS)
+ RP
1
x
x 1.15V
RP
High trip voltage
VTR2 =
(RP + RQ)
RP
x 1.15V
FIGURE 27B.
FIGURE 29A.
OFF
OFF
ON
B
ON
ON OFF
.comVTR1
VTR2
t4USUPPLY VOLTAGE
e FIGURE 27C.
heFIGURE 27. TWO ATERNATIVE VOLTAGE DETECTION
CIRCUITS EMPLOYING HYSTERESIS TO
S PROVIDE PAIRS OF WELL DEFINED TRIP
www.Data VOLTAGES
ON
A
OFF
VTR1
VNOM
VTR2
SUPPLY VOLTAGE
FIGURE 29B.
FIGURE 29. NON-VOLATILE LOW VOLTAGE INDICATOR
7-171
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet ICL8212.PDF ] | |
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