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參數(shù)資料
| 型號： | LTC6652BHMS8-2.5 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 2.5 V, PDSO8 |
| 封裝： | PLASTIC, MSOP-8 |
| 文件頁數(shù)： | 11/12頁 |
| 文件大?。?/td> | 260K |
| 代理商： | LTC6652BHMS8-2.5 |
LTC6652
8
6652f
APPLICATIONS INFORMATION
Figure 8. Start-Up Response Without Output Capacitor
Figure 9. Start-Up Response with 1μF Output Capacitor
Figure 10. Open-Drain Shutdown Circuit
Figure 11. Shutdown Response with 5mA Load
In Figure 8, ripple momentarily appears just after the
leading edge of powering on. This brief one time event is
caused by calibration circuitry during initialization. When
an output capacitor is used, the ripple is virtually undetect-
able as shown in Figure 9.
Shutdown Mode
Shutdown mode is enabled by tying SHDN low which places
the part in a low power state (i.e., <2μA). In shutdown
mode, the output pin takes the value of 50kΩ. For normal
operation, SHDN should be greater than or equal to 2.0V.
For use with a microcontroller, use a pull-up resistor to
VIN and an open-drain output driver as shown in Figure
10. The LTC6652’s response into and out of shutdown
mode is shown in Figure 11.
The trip thresholds on SHDN have some dependence
on the voltage applied to VIN as shown in the Typical
Performance Characteristics section. Be careful to avoid
leaving SHDN at a voltage between the thresholds as
this will likely cause an increase in supply current due to
shoot-through current.
Long-Term Drift
Long-term drift cannot be extrapolated from acceler-
ated high temperature testing. This erroneous technique
gives drift numbers that are wildly optimistic. The only
way long-term drift can be determined is to measure it
over the time interval of interest. The LTC6652 long-term
drift data was collected on more than 100 parts that were
soldered into PC boards similar to a “real world” application.
The boards were then placed into a constant temperature
oven with TA = 33°C, their outputs were scanned regularly
and measured with an 8.5 digit DVM. Long-term drift is
shown below in Figure 12.
VIN
2V/DIV
VOUT
1V/DIV
100μs/DIV
6652 F08
COUT = 0μF
2.8V ≤ VIN ≤ 13.2V
VOUT
TO μC
C1
1μF
C2
1μF
R1
20k
6652 F10
LTC6652-2.5
SHDN
2N7002
VOUT
VIN
2V/DIV
OUT
1V/DIV
100μs/DIV
6652 F09
COUT = 1μF
SHDN
1V/DIV
VOUT
1V/DIV
1ms/DIV
6652 F11
ILOAD = 5mA
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LTC6652BHMS8-3 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Precision Low Drift Low Noise Buffered Reference |
| LTC6652BHMS8-3#PBF | 功能描述:IC VREF SERIES PREC 3V 8-MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電壓基準 系列:- 產(chǎn)品培訓模塊:Voltage Reference Basics 標準包裝:100 系列:- 基準類型:旁路，精度 輸出電壓:4.096V 容差:±0.075% 溫度系數(shù):50ppm/°C 輸入電壓:- 通道數(shù):1 電流 - 陰極:1µA 電流 - 靜態(tài):- 電流 - 輸出:10mA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:8-SOIC 包裝:管件 |
| LTC6652BHMS8-3#TRPBF | 功能描述:IC VREF SERIES PREC 3V 8-MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電壓基準 系列:- 產(chǎn)品培訓模塊:Voltage Reference Basics 標準包裝:100 系列:- 基準類型:旁路，精度 輸出電壓:4.096V 容差:±0.075% 溫度系數(shù):50ppm/°C 輸入電壓:- 通道數(shù):1 電流 - 陰極:1µA 電流 - 靜態(tài):- 電流 - 輸出:10mA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:8-SOIC 包裝:管件 |
| LTC6652BHMS8-3.3 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Precision Low Drift Low Noise Buffered Reference |
| LTC6652BHMS8-3.3#PBF | 功能描述:IC VREF SERIES PREC 3.3V 8-MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電壓基準 系列:- 產(chǎn)品培訓模塊:Voltage Reference Basics 標準包裝:100 系列:- 基準類型:旁路，精度 輸出電壓:4.096V 容差:±0.075% 溫度系數(shù):50ppm/°C 輸入電壓:- 通道數(shù):1 電流 - 陰極:1µA 電流 - 靜態(tài):- 電流 - 輸出:10mA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:8-SOIC 包裝:管件 |
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