- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄372057 > REF5025AIDR Low-Noise, Very Low Drift, Precision VOLTAGE REFERENCE PDF資料下載
參數(shù)資料
| 型號(hào)： | REF5025AIDR |
| 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(zhǔn) |
| 文件頁(yè)數(shù)： | 10/18頁(yè) |
| 文件大小： | 469K |
| 代理商： | REF5025AIDR |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)當(dāng)前第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)
www.ti.com
TEMPERATURE MONITORING
The temperature output terminal (TEMP, pin 3)
provides a temperature-dependent voltage output
with approximately 60k
source impedance. As seen
in
Figure 8
, the output voltage follows the nominal
relationship:
V
TEMP PIN
= 509mV + 2.64
×
T(
°
C)
This pin indicates general chip temperature, accurate
to approximately ±15
°
C. Although it is not generally
suitable for accurate temperature measurements, it
can be used to indicate temperature changes or for
temperature compensation of analog circuitry. A
temperature change of 30
°
C corresponds to an
approximate 79mV change in voltage at the TEMP
pin.
POWER DISSIPATION
The REF50xx family is specified to deliver current
loads of ±10mA over the specified input voltage
range. The temperature of the device increases
according to the equation:
T
J
= T
A
+ P
D
×
θ
JA
Where:
T
J
= Junction temperature (
°
C)
T
A
= Ambient temperature (
°
C)
P
D
= Power dissipated (W)
θ
JA
= Junction-to-ambient thermal
(
°
C/W)
The REF50xx junction temperature must not exceed
the absolute maximum rating of +150
°
C.
NOISE PERFORMANCE
Typical 0.1Hz to 10Hz voltage noise for each member
of the REF50xx family is specified in the
Electrical
Characteristics: Per Device
table. The noise voltage
increases
with
output
temperature. Additional filtering can be used to
improve output noise levels, although care should be
taken to ensure the output impedance does not
degrade performance.
DNC
TEMP
V
OUT
V
IN
GND
DNC
NC
TRIM
REF50xx
V
TEMP
2.6mV/ C
°
OPA
(1)
NOTE: (1) Low drift op amp, such as the OPA333, OPA335, or OPA376.
+V
REF5020, REF5025
REF5030, REF5040
REF5045, REF5050
SBOS410–JUNE 2007
resistance
The TEMP pin has high output impedance (see
Figure 21
). Loading this pin with a low-impedance
circuit induces a measurement error; however, it does
not have any effect on V
OUT
accuracy. To avoid
errors caused by low-impedance loading, buffer the
TEMP pin output with a suitable low-temperature drift
op amp, such as the
OPA333
,
OPA335
, or
OPA376
,
as shown in
Figure 24
.
voltage
and
operating
Figure 24. Buffering the TEMP Pin Output
10
Copyright 2007, Texas Instruments Incorporated
Submit Documentation Feedback
Product Folder Link(s):
REF5020 REF5025 REF5030 REF5040 REF5045 REF5050
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| REF5025AIDRG4 | Low-Noise, Very Low Drift, Precision VOLTAGE REFERENCE |
| REF5025I | Low-Noise, Very Low Drift, Precision VOLTAGE REFERENCE |
| REF5025ID | Low-Noise, Very Low Drift, Precision VOLTAGE REFERENCE |
| REF5025IDG4 | Low-Noise, Very Low Drift, Precision VOLTAGE REFERENCE |
| REF5025IDR | Low-Noise, Very Low Drift, Precision VOLTAGE REFERENCE |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| REF5025AIDRG4 | 功能描述:基準(zhǔn)電壓& 基準(zhǔn)電流 Low Noise Very Low Drift Prec Vltg Ref RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Voltage References 拓?fù)浣Y(jié)構(gòu):Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準(zhǔn)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 |
| REF5025AQDRQ1 | 功能描述:基準(zhǔn)電壓& 基準(zhǔn)電流 Auto Cat Low Noise Very Low Drift,Prec RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Voltage References 拓?fù)浣Y(jié)構(gòu):Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準(zhǔn)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 |
| REF5025-EP | 制造商:TI 制造商全稱:Texas Instruments 功能描述:LOW-NOISE,VERY LOW DRIFT,PRECISION VOLTAGE REFERENCE |
| REF5025-HT | 制造商:TI 制造商全稱:Texas Instruments 功能描述:LOW NOISE, VERY LOW DRIFT, PRECISION VOLTAGE REFERENCE |
| REF5025I | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Low-Noise, Very Low Drift, Precision VOLTAGE REFERENCE |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。