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參數(shù)資料
| 型號： | VRE4110K |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Low Cost, SOIC-8 Precision References |
| 中文描述： | 低成本，采用SOIC - 8精密參考 |
| 文件頁數(shù)： | 5/7頁 |
| 文件大?。?/td> | 232K |
| 代理商： | VRE4110K |
BASIC CIRCUIT CONNECTION
Figure 3 shows the proper connection of the
VRE4100 series voltage reference.
To achieve the specified performance, pay careful
attention to the layout. Commons should be
connected to a single point to minimize interconnect
resistances. This will reduce voltage errors, noise
pickup, and noise coupled from the power supply.
VRE4100DS REV. A MAY 01
Figure 2 External Connections
2
6
+ V
OUT
3
+ V
IN
VRE4100
NC
Enable
4
C
OUT
1μF
Reference output
Vout
6
This pin must be left open
NC
1,5,7,8
Pulled to V
in
for normal
operation.
Enable
3
Positive power supply input
These must be connected to
ground
Vin
GND
2
4
PIN DESCRIPTION
www.thaler.com
TEMPERATURE PERFORMANCE
The VRE4100 is designed for applications where
the initial error at room temperature and drift over
temperature are important to the user. For many
instrument manufacturers, a voltage reference with
a temperature coefficient of 1ppm/°C makes it
possible to eliminate a system temperature
calibration, a slow and costly process.
Of the three TC specification methods (slope,
butterfly, and box), the box method is most
commonly used. A box is formed by the min/max
limits for the nominal output voltage over the
operating temperature range. The equation follows:
This method corresponds more accurately to the
method of test and provides a closer estimate of
actual error than the other methods. The box
method guarantees limits for the temperature error
but does not specify the exact shape or slope of the
device under test.
For example a designer who needs a 14-bit
accurate data acquisition system over the industrial
temperature range (-40°C to +85°C), will need a
voltage reference with a temperature coefficient
(TC) of 1.0ppm/°C if the reference is allowed to
contribute an error equivalent to 1LSB. Figure 3
shows the required reference TC vs. T change from
25°C for resolution ranging from 8 bits to 20 bits.
0.01
0.1
1
10
100
1000
10000
1
10
100
20 BIT
18 BIT
16 BIT
14 BIT
12 BIT
10 BIT
8 BIT
ReferenceTC
(ppm/°C)
Figure 3
Reference TC vs. T change from 25°C for 1 LSB change
1,5,7,8
)
10
(
)
(
.
.
6
min
max
min
min
max
T
T
V
V
V
C
T
al
no
=
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| VRE4112 | 制造商:CIRRUS 制造商全稱:Cirrus Logic 功能描述:Precision Voltage Reference |
| VRE4112B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Low Cost, SOIC-8 Precision References |
| VRE4112C | 功能描述:基準電壓& 基準電流 Ref. +1.25V, 0/70C 2ppm 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 |
| VRE4112K | 功能描述:基準電壓& 基準電流 Ref. +1.25V, -40/85C 3ppm 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 |
| VRE4120B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Low Cost, SOIC-8 Precision References |
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