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參數(shù)資料
| 型號： | LT1815 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | 6.5mA, 220MHz, 1500V/μs,Low Power,Operational Amplifier with Programmable Current(6.5mA, 220MHz, 1500V/μs 低功耗,單路電流可編程運(yùn)算放大器) |
| 中文描述： | 6.5毫安，220MHz，1500V/μs，低功耗，運(yùn)算放大器，具有可編程電流（6.5毫安，220MHz，1500V/μs低功耗，單路電流可編程運(yùn)算放大器） |
| 文件頁數(shù)： | 8/12頁 |
| 文件大?。?/td> | 170K |
| 代理商： | LT1815 |
8
LT1815
To adjust or program the supply current and speed of the
LT1815S6, connect an external resistor (R
EN
) between the
EN pin and the negative supply as shown in Figure 1. In this
low power mode the amplifier is fully functional. Figures 2
and 3 show how the gain bandwidth and supply current
vary with the value of the programming resistor R
EN
.
When the EN pin is left unconnected or is forced at least
2V above the negative supply voltage, the LT1815S6 is in
shutdown mode and draws only 150
μ
A of supply current.
The amplifier output is not isolated from the inputs,
however, so the shutdown feature must not be used for
multiplexing applications.
Power Dissipation
The LT1815 combines high speed and large output drive
in a small package. However, the junction temperature will
not exceed the 150
°
C maximum unless the part is used
outside of its specified drive capability. Maximum junction
temperature (T
J
) is calculated from the ambient tempera-
ture (T
A
) and power dissipation (P
D
) as follows:
T
J
= T
A
+ (P
D
θ
JA
) (Note 9)
Power dissipation is composed of two parts. The first is
due to the quiescent supply current and the second is due
to on-chip dissipation caused by the load current. The
worst-case load induced power occurs when the output
voltage is at 1/2 of either supply voltage (or the maximum
swing if less than 1/2 the supply voltage). Therefore P
DMAX
is:
P
DMAX
= (V
+
– V
–
) (I
SMAX
) + (V
+
/2)
2
/R
L
or
P
DMAX
= (V
+
– V
–
) (I
SMAX
) + (V
+
– V
OMAX
)
(V
OMAX
/R
L
)
Example: LT1815CS5 at 70
°
C, V
S
=
±
5V, R
L
=100
P
DMAX
= (10V) (9mA) + (2.5V)
2
/100
= 153mW
T
JMAX
= 70
°
C + (153mW) (250
°
C/W) = 108
°
C
APPLICATIOU
W
U
U
EN
V
–
1815 F01
V
+
R
EN
–5V
5V
–
+
LT1815S6
Figure 1. Programming Resistor Between EN and V
–
R
EN
PROGRAMING RESISTOR (
)
50
G
100
150
200
250
10
1k
10k
100k
1815 F02
0
100
V
S
=
±
5V
T
A
= 25
°
C
R
L
= 500
R
L
= 100
Figure 2. Gain Bandwidth vs R
EN
Programming Resistor
R
EN
PROGRAMMING RESISTOR (
)
2
S
4
6
7
10
1k
10k
100k
1815 F03
0
100
5
3
1
V
S
=
±
5V
T
A
= 25
°
C
Figure 3. Supply Current vs R
EN
Programming Resistor
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1815CS5 | 制造商:Linear Technology 功能描述:OP Amp Single Volt Fdbk ±6.3V/12.6V 5-Pin TSOT-23 |
| LT1815CS5#PBF | 制造商:Linear Technology 功能描述:OP Amp Single Volt Fdbk ±6.3V/12.6V 5-Pin TSOT-23 |
| LT1815CS5#TR | 功能描述:IC OPAMP HI-SPEED SNGL TSOT-23-5 RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:160 系列:- 放大器類型:通用 電路數(shù):4 輸出類型:滿擺幅 轉(zhuǎn)換速率:10 V/µs 增益帶寬積:9MHz -3db帶寬:- 電流 - 輸入偏壓:1pA 電壓 - 輸入偏移:250µV 電流 - 電源:730µA 電流 - 輸出 / 通道:28mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 5.5 V，±1.35 V ~ 2.75 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC N 包裝:管件 |
| LT1815CS5#TRM | 功能描述:IC OPAMP HI-SPEED SNGL TSOT-23-5 RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:160 系列:- 放大器類型:通用 電路數(shù):4 輸出類型:滿擺幅 轉(zhuǎn)換速率:10 V/µs 增益帶寬積:9MHz -3db帶寬:- 電流 - 輸入偏壓:1pA 電壓 - 輸入偏移:250µV 電流 - 電源:730µA 電流 - 輸出 / 通道:28mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 5.5 V，±1.35 V ~ 2.75 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC N 包裝:管件 |
| LT1815CS5#TRMPBF | 功能描述:IC OPAMP HI-SPEED SNGL TSOT-23-5 RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 放大器類型:通用 電路數(shù):4 輸出類型:滿擺幅 轉(zhuǎn)換速率:0.028 V/µs 增益帶寬積:105kHz -3db帶寬:- 電流 - 輸入偏壓:3nA 電壓 - 輸入偏移:100µV 電流 - 電源:3.3µA 電流 - 輸出 / 通道:12mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 12 V，±1.35 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:剪切帶 (CT) 其它名稱:OP481GRUZ-REELCT |
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