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參數(shù)資料
| 型號(hào)： | LT6650IS5 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | Micropower, 400mV Reference with Rail-to-Rail Buffer Amplifier in SOT-23 |
| 中文描述： | BUFFER AMPLIFIER, PDSO5 |
| 封裝： | 1 MM, PLASTIC, MO-193, TSOT-23, 5 PIN |
| 文件頁數(shù)： | 9/12頁 |
| 文件大?。?/td> | 440K |
| 代理商： | LT6650IS5 |
LT6650
9
6650f
Figure 9. Typical Configuration of LT6650 as Adjustable Positive
Shunt Reference
Figure 10. Typical Configuration of LT6650 as Adjustable
Negative Shunt Reference
APPLICATIU
step between 100
μ
A and 200
μ
A in Figure 7. Load step settling
occurs in about 0.5ms or less (to
±
0.2%).
W
U
U
Output Adjustment
If the LT6650 is to be used as a 400mV reference, then the
output and feedback pins may be tied together without any
scale-setting components as shown in the front-page
application circuit. Setting the output to any higher voltage
is a simple matter of selecting two feedback resistors to
configure the non-inverting gain of the internal operational
amplifier, as shown in Figure 8. A feedback resistor R
F
is
connected between the OUT pin and the FB pin, and a gain
resistor R
G
is connected from the FB pin to GND. The
resistor values are related to the output voltage by the
following relationship:
R
F
= R
G
(V
OUT
– 0.4)/(0.4 – I
FB
R
G
)
The I
FB
term represents the FB pin bias current, and can
generally be neglected when R
G
is 100k or less. For
R
G
≤
20k, even worst-case I
FB
can be neglected (error
contribution <0.15%). Since the V
OUT
error distribution
increases at twice the resistor tolerance, high accuracy
resistors or resistor networks are recommended. The
output voltage may be set to any level from 400mV up to
350mV below the supply voltage with source or sink
capability.
Noise Reduction Capacitor
In applications involving the use of resistive feedback for
reference scaling, the intrinsic reference noise is amplified
along with the DC level. To minimize noise amplification,
the use of a 1nF feedback capacitor is recommended, as
shown in Figure 8 and other circuits with scaling resistors.
Shunt Reference Operation
The circuits shown in Figure 9 and Figure 10 form adjust-
able shunt references. Along with the external bias resistor
R
B
, the LT6650 provides positive or negative reference
operation for outputs between 1.4V and 18V (positive or
negative). Just like a Zener diode, a supply V
S
is required,
somewhat higher in magnitude than the desired reference
V
OUT
6650 F09
10
μ
F
OUT
IN
FB
GND
LT6650
2
4
5
1
V
S
R
F
R
B
R
G
1nF
V
OUT
= 0.4V (1 + R
F
/R
G
)
V
OUT
6650 F10
10
μ
F
OUT
IN
FB
GND
LT6650
2
4
5
1
R
F
–V
S
R
B
R
G
1nF
V
OUT
= –0.4V (1 + R
F
/R
G
)
Figure 8. Typical Configuration for Output Voltages
Greater than 0.4V
V
OUT
6650 F08
1
μ
F
1
μ
F
1nF
OUT
IN
FB
GND
LT6650
2
4
5
1
V
S
1k
R
F
R
G
V
OUT
= 0.4V (1 + R
F
/R
G
)
Figure 7. Output Response to Current-Sinking Load Step
(100
μ
A to 200
μ
A)
6650 F07
V
OUT
10mV/DIV
AC
I
OUT
200
μ
A
100
μ
A
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PDF描述 |
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| LT6700CS6-1 | Micropower, Low Voltage, SOT-23, Dual Comparator with 400mV Reference |
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| LT6700HS6-2 | Micropower, Low Voltage, SOT-23, Dual Comparator with 400mV Reference |
| LT6700HS6-3 | Micropower, Low Voltage, SOT-23, Dual Comparator with 400mV Reference |
| LT6700CS6-2 | Micropower, Low Voltage, SOT-23, Dual Comparator with 400mV Reference |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT6650IS5#PBF | 制造商:Linear Technology 功能描述:V-Ref Precision 0.4V 0.2mA 5-Pin TSOT-23 |
| LT6650IS5#TR | 功能描述:IC VREF SERIES 0.4V TSOT-23-5 RoHS:否 類別:集成電路 (IC) >> PMIC - 電壓基準(zhǔn) 系列:- 產(chǎn)品培訓(xùn)模塊:Voltage Reference Basics 標(biāo)準(zhǔn)包裝:100 系列:- 基準(zhǔn)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(yīng)商設(shè)備封裝:8-SOIC 包裝:管件 |
| LT6650IS5#TRM | 功能描述:IC VREF SERIES 0.4V TSOT-23-5 RoHS:否 類別:集成電路 (IC) >> PMIC - 電壓基準(zhǔn) 系列:- 產(chǎn)品培訓(xùn)模塊:Voltage Reference Basics 標(biāo)準(zhǔn)包裝:100 系列:- 基準(zhǔn)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(yīng)商設(shè)備封裝:8-SOIC 包裝:管件 |
| LT6650IS5#TRMPBF | 功能描述:IC VREF SERIES 0.4V TSOT-23-5 RoHS:是 類別:集成電路 (IC) >> PMIC - 電壓基準(zhǔn) 系列:- 產(chǎn)品培訓(xùn)模塊:Voltage Reference Basics 標(biāo)準(zhǔn)包裝:100 系列:- 基準(zhǔn)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(yīng)商設(shè)備封裝:8-SOIC 包裝:管件 |
| LT6650IS5#TRPBF | 功能描述:IC VREF SERIES 0.4V TSOT-23-5 RoHS:是 類別:集成電路 (IC) >> PMIC - 電壓基準(zhǔn) 系列:- 產(chǎn)品培訓(xùn)模塊:Voltage Reference Basics 標(biāo)準(zhǔn)包裝:100 系列:- 基準(zhǔn)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(yīng)商設(shè)備封裝:8-SOIC 包裝:管件 |
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