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参数资料
| 型号： | REF02BICZ |
| 厂商： | ANALOG DEVICES INC |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 5 V, CDIP8 |
| 封装： | CERDIP-8 |
| 文件页数： | 11/12页 |
| 文件大小： | 441K |
| 代理商： | REF02BICZ |
REV. C
REF02
–8–
OUTPUT ADJUSTMENT
The REF02 trim terminal can be used to adjust the output
voltage over a 5 V
±300 mV range. This feature allows the sys-
tem designer to trim system errors by setting the reference to a
voltage other than 5 V. Of course, the output can also be set to
exactly 5.000 V, or to 5.12 V for binary applications.
15V
VIN
GND
TRIM
VO
REF02
2
6
5
4
OUTPUT
10k
3
TEMP
Figure 2. Output Adjustment Circuit
Adjustment of the output does not significantly affect the tem-
perature performance of the device. The temperature coefficient
change is approximately 0.7 ppm/
∞C for 100 mV of output
adjustment.
–18V
+18V
VIN
GND
REF02
4
2
Figure 3. Burn-In Circuit
VIN
GND
REF02
VO
TRIM
0.1 F
5k
10k
+15V
–15V
+15V
+5V
–5V
4
5
6
2
OP02
3
TEMP
Figure 4.
±5 V Reference
REF02
R1
5.6k
2
+5V
4
6
2
VO+
+2.5V
R2
5.6k
OP02
–
+
VREF
3
4
6
7
+VO
–2.5V
–9V
VO+ =
R1
R1 + R2
(VREF), VO– =
R2
R1 + R2
(VREF)
Figure 5.
±2.5 V Reference
RS
1.5k ,
5%
OP02
VIN
GND
REF02
VO
TRIM
0.1 F
RP
50k
4
5
6
2
VREF
TEMP
3
*
UP TO 10 FEET OF SHIELDED
4-CONDUCTOR CABLE
RB1
2
3
7
4
RBP
VOUT
+15V
–15V
RC
RA
6
Figure 6. Precision Temperature Transducer with
Remote Sensor
Table I. Resistor Values
TCVOUT SLOPE(S)
10 mV/
∞C
100 mV/
∞C 10 mV/∞F
Temperature
–55
∞C to
–55
∞C to
–67
∞F to
Range
+125
∞C
+125
∞C
+2.57
∞C
Output Voltage
–0.55 V to
–5.5 V to
–0.67 V to
Range
+1.25 V
+12.5 V
*
+2.57 V
Zero Scale
0 V @ 0
∞C0 V @ 0∞C0 V @ 0∞F
RA (
±1% resistor)
9.09 k
W
15 k
W
7.5 k
W
RB1 (
±1% resistor)
1.5 k
W
1.82 k
W
1.21 k
W
RBP(Potentiometer)
200
W
500
W
200
W
RC (
±1% resistor)
5.11 k
W
84.5 k
W
8.25 k
W
*For 125
∞C operation, the op amp output must be able to swing to 12.5 V,
increase VIN to 18 V from 15 V if this is a problem.
TEMPERATURE – C
TEMP
V
OL
T
A
GE
OUTPUT
–
mA
880
–60
–40
–20
140
020
406080
100
120
VIN = 15V
830
780
730
680
630
580
530
480
430
Figure 7. Typical Temperature Voltage Output vs.
Temperature (REF02A)
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