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參數(shù)資料
| 型號(hào)： | ADA4311-1ARHZ-RL |
| 廠商： | Analog Devices Inc |
| 文件頁(yè)數(shù)： | 2/16頁(yè) |
| 文件大小： | 0K |
| 描述： | IC LINE DRVR DUAL HI CURR 10MSOP |
| 標(biāo)準(zhǔn)包裝： | 3,000 |
| 放大器類型： | 電流反饋 |
| 電路數(shù)： | 2 |
| 轉(zhuǎn)換速率： | 1050 V/µs |
| -3db帶寬： | 310MHz |
| 電流 - 輸入偏壓： | 4.5µA |
| 電壓 - 輸入偏移： | 1000µV |
| 電流 - 電源： | 11.8mA |
| 電壓 - 電源，單路/雙路(±)： | 6 V ~ 12 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 10-TFSOP，10-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 10-MSOP |
| 包裝： | 帶卷 (TR) |
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ADA4311-1
Rev. 0 | Page 10 of 16
THEORY OF OPERATION
The ADA4311-1 is a dual-current feedback amplifier with high
output current capability. With a current feedback amplifier, the
current into the inverting input is the feedback signal, and the
open-loop behavior is that of a transimpedance, dVO/dIIN or TZ.
The open-loop transimpedance is analogous to the open-loop
voltage gain of a voltage feedback amplifier. Figure 21 shows a
simplified model of a current feedback amplifier. Because RIN is
proportional to 1/gm, the equivalent voltage gain is TZ × gm,
where gm is the transconductance of the input stage. Basic
analysis of the follower with gain circuit yields
()
F
IN
Z
IN
OUT
R
G
s
T
s
T
G
V
+
×
+
×
=
where:
G
F
R
G
+
=1
Ω
50
1 ≈
=
m
IN
g
R
Because G × RIN << RF for low gains, a current feedback amplifier
has relatively constant bandwidth vs. gain, the 3 dB point being
set when |TZ| = RF.
For a real amplifier, there are additional poles that contribute
excess phase, and there is a value for RF below which the amplifier
is unstable. Tolerance for peaking and desired flatness determines
the optimum RF in each application.
RF
VOUT
RG
RN
VIN
RIN
IIN
TZ
0
69
40
-018
Figure 21. Simplified Block Diagram
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADA4311-1ARHZ-RL1 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Cost, Dual, High Current Output Line Driver with Shutdown |
| ADA4312-1ACPZ-R2 | 制造商:Analog Devices 功能描述:HIGH BANDWIDTH POWER LINE DRIVER - Tape and Reel |
| ADA4312-1ACPZ-R7 | 功能描述:緩沖器和線路驅(qū)動(dòng)器 High Bandwidth Power Line Driver RoHS:否 制造商:Intersil 輸入線路數(shù)量: 輸出線路數(shù)量: 極性: 電源電壓-最大: 電源電壓-最小: 最大工作溫度:+ 85 C 安裝風(fēng)格: 封裝 / 箱體:QFN EP 封裝:Reel |
| ADA4312-1ACPZ-RL | 功能描述:緩沖器和線路驅(qū)動(dòng)器 WB Diff Hi Out Crnt Line Dvr w/ Shutdown RoHS:否 制造商:Intersil 輸入線路數(shù)量: 輸出線路數(shù)量: 極性: 電源電壓-最大: 電源電壓-最小: 最大工作溫度:+ 85 C 安裝風(fēng)格: 封裝 / 箱體:QFN EP 封裝:Reel |
| ADA4320-1 | 制造商:AD 制造商全稱:Analog Devices 功能描述:High Power, Low Distortion Upstream |
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