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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,單路電流可編程運算放大器) |
| 中文描述： | 6.5毫安，220MHz，1500V/μs，低功耗，運算放大器，具有可編程電流（6.5毫安，220MHz，1500V/μs低功耗，單路電流可編程運算放大器） |
| 文件頁數(shù)： | 9/12頁 |
| 文件大小： | 170K |
| 代理商： | LT1815 |
9
LT1815
Circuit Operation
The LT1815 circuit topology is a true voltage feedback
amplifier that has the slewing behavior of a current feed-
back amplifier. The operation of the circuit can be under-
stood by referring to the Simplified Schematic.
Complementary NPN and PNP emitter followers buffer the
inputs and drive an internal resistor. The input voltage
appears across the resistor generating current that is
mirrored into the high impedance node.
Complementary followers form an output stage that buff-
ers the gain node from the load. The input resistor, input
stage transconductance, and the capacitor on the high
impedance node determine the bandwidth. The slew rate
is determined by the current available to charge the gain
node capacitance. This current is the differential input
voltage divided by R1, so the slew rate is proportional to
APPLICATIOU
W
U
U
the input step. Highest slew rates are therefore seen in the
lowest gain configurations.
The RC network across the output stage is bootstrapped
when the amplifier is driving a light or moderate load and
has no effect under normal operation. With a heavy load
(capacitive or resistive), the network is incompletely
bootstrapped and adds to the compensation at the high
impedance node. The added capacitance moves the unity-
gain frequency away from the pole formed by the output
impedance and the capacitive load. The zero created by
the RC combination adds phase to ensure that the total
phase lag does not exceed 180
°
(zero phase margin) and
the amplifier remains stable. In this way, the LT1815 is
stable with up to 100pF capacitive loads in unity gain, and
even higher capacitive loads in higher closed-loop gain
configurations.
SW
W
1815 SS
OUT
+IN
–IN
BIAS
CONTROL
V
+
V
–
6-LEAD SOT-23 ONLY
EN
R1
C
C
R
C
C
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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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