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參數(shù)資料
| 型號： | REF02Z883B |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 5 V, CDIP8 |
| 封裝： | CERDIP-8 |
| 文件頁數(shù)： | 12/12頁 |
| 文件大?。?/td> | 441K |
| 代理商： | REF02Z883B |
REV. C
REF02
–9–
NOTES
1.
2.
3.
REF02 SHOULD BE THERMALLY CONNECTED
TO SUBSTANCE BEING HEATED.
NUMBERS IN PARENTHESES ARE FOR A
SETPOINT TEMPERATURE OF 60 C.
R3 = R1 R2 R6
HEATING
ELEMENT
(SEE NOTE 1)
VIN
GND
REF02
VO
4
6
2
T
3
R1
(9.2k )
CMP02
2
3
8
4
R6
1
7
R7
27k
R2
1.5k
R4
2.7k
R5
2.2k
V+ (12V TO 32V)
R3
1.3k
V+
V–
–
+
Figure 8. Temperature Controller
REFERENCE STACK WITH EXCELLENT LINE
REGULATION
Two REF01s and one REF02 can be stacked to yield 5.000 V,
15.000 V, and 25.000 V outputs. An additional advantage is
near-perfect line regulation of the 5.0 V and 15.0 V output. A
27 V to 55 V input change produces an output change that is
less than the noise voltage of the devices. A load bypass resistor
(RB) provides a path for the supply current (ISY) of the 15.000 V
regulator.
In general, any number of REF01s and REF02s can be stacked
this way. For example, 10 devices will yield 10 outputs in 5 V or
10 V steps. The line voltage can change from 100 V to 130 V.
However, care must be taken to ensure that the total load currents
do not exceed the maximum usable current (typically 21 mA).
VIN
GND
REF02
VO
VIN
GND
REF02
VO
VIN
GND
REF02
VO
TRIM
10k
RB
6.8k
10k
2
6
5
4
2
6
5
4
2
6
5
4
15.000V
10.000V
5.000V
27V TO 55V
TRIM
Figure 9. Reference Stack
PRECISION CURRENT SOURCE
A current source with 35 V output compliance and excellent
output impedance can be obtained using this circuit. REF02
keeps the line voltage and power dissipation constant in device;
the only important error consideration at room temperature is
the negative supply rejection of the op amp. The typical 3
mV/V
PSRR of the OP02E will create an 20 ppm change (3
mV/V
35 V/5 V) in output current over a 25 V range. For example, a
5 mA current source can be built (R = 1 k
W) with 350 MW
output impedance.
VIN
GND
REF02
VO
2
6
4
VIN
GND
REF02
VO
2
6
4
C
R
(TRIM FOR
CALIBRATION)
C
R
OP02E
2
3
–5V
4
6
7
IO =
5V
R
VO = 0V TO 35V
50V
RO =
35V
20
10–6
5mA
Figure 10. Precision Current Source
VIN
GND
TRIM
VO
REF02
15V
2
6
5
4
R
VOLTAGE COMPLIANCE: –25V TO +8V
IOUT
IOUT = +
+ 1mA
5V
R
3
TEMP
Figure 11. Current Source
VIN
GND
TRIM
VO
REF02
IOUT
2
6
5
4
R
VOLTAGE COMPLIANCE: –8V TO +25V
IOUT = +
+ 1mA
5V
R
–15V
3
TEMP
Figure 12. Current Sink
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| REF02Z-G107 | 功能描述:基準電壓& 基準電流 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Voltage References 拓撲結構:Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準確度:0.25 % 平均溫度系數(shù)（典型值）:100 PPM / C 串聯(lián) VREF - 輸入電壓（最大值）: 串聯(lián) VREF - 輸入電壓（最小值）: 分流電流（最大值）:60 mA 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-23-3L 封裝:Reel |
| REF03 | 制造商:AD 制造商全稱:Analog Devices 功能描述:+2.5V Precision Voltage Reference |
| REF-03 | 制造商:AD 制造商全稱:Analog Devices 功能描述:+2.5V Precision Voltage Reference |
| REF03CS | 制造商:Calogic LLC 功能描述: |
| REF03G | 制造商:PMI 功能描述: |
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