REF02CP Analog Devices Inc, REF02CP Datasheet - Page 17

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REF02CP

Manufacturer Part Number
REF02CP
Description
IC VOLT REFERENCE PREC 5V 8DIP
Manufacturer
Analog Devices Inc
Datasheets

Specifications of REF02CP

Rohs Status
RoHS non-compliant
Reference Type
Series
Voltage - Output
5V
Tolerance
±14%
Temperature Coefficient
65ppm/°C
Voltage - Input
7 ~ 40 V
Number Of Channels
1
Current - Quiescent
1.4mA
Current - Output
10mA
Operating Temperature
-40°C ~ 85°C
Mounting Type
Through Hole
Package / Case
8-DIP (0.300", 7.62mm)
Reference Volt Tolerance ±%
0.45%
Operating Temperature Max
85°C
Peak Reflow Compatible (260 C)
No
Output Voltage
5V
Current Rating
1.4mA
Output Voltage Max
5V
Leaded Process Compatible
No
Features
1.4mA
Fixed / Adjust / Prog
Precision
Output Voltage (max)
5V
Reference Voltage Accuracy (max)
1
Line Regulation
150ppm/V
Load Regulation
150ppm/mA
Input Voltage (max)
40V
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Through Hole
Pin Count
8
Package Type
PDIP
Current - Cathode
-
Lead Free Status / Rohs Status
Not Compliant

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BIPOLAR VOLTAGE REFERENCE
Many applications require both a positive and reference voltage
of the same magnitude. A simple method of generating such a
bipolar reference is shown in Figure 42.
In this configuration, the negative rail is generated simply
with an inverting amplifier with a gain of −1. A low offset
op amp should be used to minimize the voltage error at the
negative output.
U1
REF03
GND
V
V+
IN
2
V
4
OUT
Figure 42. Bipolar Voltage Reference
6
100kΩ
100kΩ
2
3
U2
OP97
V–
4
7
6
+2.5V
–2.5V
Rev. K | Page 17 of 20
ADJUSTABLE REFERENCE WITH POSITIVE AND
NEGATIVE SWING
The output voltage of the REF0x references can be readily
adjusted via a simple trim circuit (explained in the Output
Adjustment section). The circuit shown in Figure 43 extends
the negative range of adjustment beyond that obtainable with
the simple trim circuit by employing a precision op amp with
a potentiometer feeding the op amp’s noninverting input.
The voltage output from the op amp can be adjusted by
changing the value of the potentiometer: as shown, the op
amp outputs +2.5 V when the pot is pulled completely high,
and −2.5V when pulled completely low. In this configuration,
the load current is sourced by the op amp; therefore, a low
offset op amp with a current rating that meets or exceeds the
current requirements of the load should be used.
U1
REF03
GND
V
V+
IN
2
V
4
OUT
Figure 43. Negatively Adjustable Reference
6
50kΩ
50kΩ
50kΩ
2
3
REF01/REF02/REF03
OP97
V+
4
7
+15V
U2
6
V
–2.5V TO +2.5V
OUT

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