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參數(shù)資料
| 型號： | LT1396 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Dual 400MHz Current Feedback Amplifier(雙路400MHz電流反饋放大器) |
| 中文描述： | 電流反饋放大器（雙路400MHz的電流反饋放大器雙400MHz） |
| 文件頁數(shù)： | 10/16頁 |
| 文件大?。?/td> | 258K |
| 代理商： | LT1396 |
10
LT1395/LT1396/LT1397
Differential Input Signal Swing
To avoid any breakdown condition on the input transis-
tors, the differential input swing must be limited to
±
5V. In
normal operation, the differential voltage between the
input pins is small, so the
±
5V limit is not an issue.
Buffered RGB to Color-Difference Matrix
An LT1397 can be used to create buffered color-differ-
ence signals from RGB inputs (Figure 4). In this applica-
tion, the R input arrives via 75
coax. It is routed to the
noninverting input of LT1397 amplifier A1 and to a 845
resistor R8. There is also an 82.5
termination resistor
R11, which yields a 75
input impedance at the R input
when considered in parallel with R8. R8 connects to the
inverting input of a second LT1397 amplifier (A2), which
also sums the weighted G and B inputs to create a
–0.5 Y output. LT1397 amplifier A3 then takes the
–0.5 Y output and amplifies it by a gain of –2, resulting
Figure 2. Amplifier Enable Time, A
V
= 2
V
S
=
±
5V
V
IN
= 1V
R
F
= 255
R
G
= 255
R
L
= 100
1395/6/7 F02
OUTPUT
EN
Figure 3. Amplifier Disable Time, A
V
= 2
V
S
=
±
5V
V
IN
= 1V
R
F
= 255
R
G
= 255
R
L
= 100
1395/6/7 F03
OUTPUT
EN
U
S
A
O
PPLICATI
U
U
in the Y output. Amplifier A1 is configured in a noninvert-
ing gain of 2 with the bottom of the gain resistor R2 tied
to the Y output. The output of amplifier A1 thus results in
the color-difference output R-Y.
The B input is similar to the R input. It arrives via 75
coax, and is routed to the noninverting input of LT1397
amplifier A4, and to a 2320
resistor R10. There is also
a 76.8
termination resistor R13, which yields a 75
input impedance when considered in parallel with R10.
R10 also connects to the inverting input of amplifier A2,
adding the B contribution to the Y signal as discussed
above. Amplifier A4 is configured in a noninverting gain
of 2 configuration with the bottom of the gain resistor R4
tied to the Y output. The output of amplifier A4 thus
results in the color-difference output B-Y.
The G input also arrives via 75
coax and adds its
contribution to the Y signal via a 432
resistor R9, which
is tied to the inverting input of amplifier A2. There is also
a 90.9
termination resistor R12, which yields a 75
termination when considered in parallel with R9. Using
superposition, it is straightforward to determine the
output of amplifier A2. Although inverted, it sums the R,
G and B signals in the standard proportions of 0.3R,
0.59G and 0.11B that are used to create the Y signal.
Amplifier A3 then inverts and amplifies the signal by 2,
resulting in the Y output.
Figure 4. Buffered RGB to Color-Difference Matrix
–
+
A2
1/4 LT1397
–
+
A3
1/4 LT1397
–
+
A1
1/4 LT1397
R7
255
R6
127
R5
255
R10
2320
R9
432
R11
82.5
R
G
B
R12
90.9
R13
76.8
ALL RESISTORS 1%
V
S
=
±
5V
R8
845
75
SOURCES
R1
255
R2
255
R4
255
R3
255
B-Y
Y
R-Y
1395/6/7 F04
–
+
A4
1/4 LT1397
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1396CDD | 功能描述:IC AMP CURRNT FEEDBCK DUAL 8DFN RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝: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 |
| LT1396CDD#PBF | 功能描述:IC AMP CURRNT FEEDBCK DUAL 8DFN RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝: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 |
| LT1396CDD#TR | 功能描述:IC AMP CUR FDBK DUAL 400MHZ 8DFN RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:1,000 系列:- 放大器類型:電壓反饋 電路數(shù):4 輸出類型:滿擺幅 轉(zhuǎn)換速率:33 V/µs 增益帶寬積:20MHz -3db帶寬:30MHz 電流 - 輸入偏壓:2nA 電壓 - 輸入偏移:3000µV 電流 - 電源:2.5mA 電流 - 輸出 / 通道:30mA 電壓 - 電源，單路/雙路(±):4.5 V ~ 16.5 V，±2.25 V ~ 8.25 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:14-SOIC 包裝:帶卷 (TR) |
| LT1396CDD#TRPBF | 功能描述:IC AMP CURRNT FEEDBCK DUAL 8DFN RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:1,000 系列:- 放大器類型:電壓反饋 電路數(shù):4 輸出類型:滿擺幅 轉(zhuǎn)換速率:33 V/µs 增益帶寬積:20MHz -3db帶寬:30MHz 電流 - 輸入偏壓:2nA 電壓 - 輸入偏移:3000µV 電流 - 電源:2.5mA 電流 - 輸出 / 通道:30mA 電壓 - 電源，單路/雙路(±):4.5 V ~ 16.5 V，±2.25 V ~ 8.25 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:14-SOIC 包裝:帶卷 (TR) |
| LT1396CDD-PBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Single/Dual/Quad 400MHz Current Feedback Amplifier |
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