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參數(shù)資料
| 型號： | REF5020IDG4 |
| 英文描述： | Low-Noise, Very Low Drift, Precision VOLTAGE REFERENCE |
| 中文描述： | 低噪聲，低漂移，高精度電壓基準 |
| 文件頁數(shù)： | 11/18頁 |
| 文件大?。?/td> | 469K |
| 代理商： | REF5020IDG4 |
www.ti.com
APPLICATION CIRCUITS
DATA ACQUISITION
Data acquisition systems often require stable voltage
references to maintain accuracy. The REF50xx family
features low noise, very low drift, and high initial
accuracy
for
high-performance
Figure 26
shows the REF5040 in a basic data
acquisition system.
NEGATIVE REFERENCE VOLTAGE
For applications requiring a negative and positive
reference voltage, the REF50xx and
OPA735
can be
used to provide a dual-supply reference from a 5V
supply.
Figure 25
shows the REF5025 used to
provide a 2.5V supply reference voltage. The low drift
performance of the REF50xx complements the low
offset voltage and zero drift of the OPA735 to provide
an accurate solution for split-supply applications.
Care must be taken to match the temperature
coefficients of R
1
and R
2
.
ADS8326
REF5040
REF
V
OUT
GND
+IN
-
IN
V
IN
+5V
OPA365
Input
Signal
0V to 4V
+5V
+5V
V
DD
GND
C
BYPASS
1 F
m
R
1
50
W
C
1
1.2nF
C
2
22 F
m
-
2.5V
+2.5V
+5V
NOTE: Bypass capacitors not shown.
R
1
10k
W
R
2
10k
W
-
5V
OPA735
+5V
DNC
TEMP
V
OUT
V
IN
GND
DNC
NC
TRIM
REF5025
1 F
m
REF5020, REF5025
REF5030, REF5040
REF5045, REF5050
SBOS410–JUNE 2007
data
converters.
Figure 26. Basic Data Acquisition System
Figure 25. The REF5025 and OPA735 Create
Positive and Negative Reference Voltages
11
Copyright 2007, Texas Instruments Incorporated
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REF5020 REF5025 REF5030 REF5040 REF5045 REF5050
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| REF5020IDGKR | 功能描述:基準電壓& 基準電流 Lo Noise Very Lo Drift Prec Vltg Ref RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Voltage References 拓撲結(jié)構(gòu):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 |
| REF5020IDGKT | 功能描述:基準電壓& 基準電流 Lo Noise Very Lo Drift Prec Vltg Ref RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Voltage References 拓撲結(jié)構(gòu):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 |
| REF5020IDR | 功能描述:基準電壓& 基準電流 Lo Noise Very Low Drift Prec VLTG REF RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Voltage References 拓撲結(jié)構(gòu):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 |
| REF5020IDRG4 | 功能描述:基準電壓& 基準電流 Low Noise Very Low Drift Prec Vltg Ref RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Voltage References 拓撲結(jié)構(gòu):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 |
| REF5020MDREP | 功能描述:基準電壓& 基準電流 EP Lo-Noise,Very Low Drift,Prec Vltg Ref RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Voltage References 拓撲結(jié)構(gòu):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 |
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