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參數(shù)資料
| 型號(hào)： | ADA4860-1YRJZ-R2 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | High Speed, Low Cost, Op Amp |
| 中文描述： | 1 CHANNEL, VIDEO AMPLIFIER, PDSO6 |
| 封裝： | LEAD FREE, PLASTIC, MO-178AB, SOT-23, 6 PIN |
| 文件頁數(shù)： | 15/20頁 |
| 文件大?。?/td> | 660K |
| 代理商： | ADA4860-1YRJZ-R2 |
ADA4860-1
DRIVING CAPACITIVE LOADS
If driving loads with a capacitive component is desired, the best
frequency response is obtained by the addition of a small series
resistance, as shown in Figure 53. Figure 54 shows the optimum
value for R
SERIES
vs. capacitive load. The test was performed with
a 50 MHz, 50% duty cycle pulse, with an amplitude of 200 mV p-p.
The criteria for R
SERIES
selection was based on maintaining
approximately 1 dB of peaking in small signal frequency
response. It is worth noting that the frequency response of the
circuit can be dominated by the passive roll-off of R
SERIES
and C
L
.
Rev. 0 | Page 15 of 20
0
V
IN
R
L
C
L
R
SERIES
R
F
750
ADA4860-1
Figure 53. Driving Capacitive Loads
14
12
10
8
6
4
2
0
0
50
40
30
20
10
S
)
CAPACITIVE LOAD (pF)
0
Figure 54. Recommended R
SERIES
vs. Capacitive Load
POWER DOWN PIN
The ADA4860-1 is equipped with a power-down function.
The POWER DOWN pin allows the user to reduce the quiescent
supply current when the amplifier is not being used. The
power-down threshold levels are derived from the voltage
applied to the V
S
pin. When used in single-supply applications,
this is especially useful with conventional logic levels
.
The
amplifier is powered down when the voltage applied to the
POWER DOWN pin is greater than (V
S
+ 0.5 V). The
amplifier is enabled whenever the POWER DOWN pin is left
open, or the voltage on the POWER DOWN pin is less than
(V
S
+ 0.5 V). If the POWER DOWN pin is not used, it should
be connected to the negative supply.
VIDEO AMPLIFIER
With low differential gain and phase errors and wide 0.1 dB
flatness, the ADA4860-1 is an ideal solution for consumer and
professional video applications. Figure 55 shows a typical video
driver set for a noninverting gain of +2, where R
F
= R
G
= 499 Ω.
The video amplifier input is terminated into a shunt 75 Ω resistor.
At the output, the amplifier has a series 75 Ω resistor for
impedance matching to the video load.
0
75
CABLE
75
75
V
OUT
–V
S
+V
S
V
IN
0.1μF
0.1μF
10μF
10μF
+
75
CABLE
75
ADA4860-1
+
–
R
F
+
R
G
Figure 55. Video Driver Schematic
SINGLE-SUPPLY OPERATION
Single-supply operation can present certain challenges for the
designer. For a detailed explanation on op amp single-supply
operation, see Application Note
AN-581
.
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| ADA4860-1YRJZ-RL | 功能描述:IC OPAMP CF LP 85MA SOT23-6 RoHS:是 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 |
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| ADA4861-3 | 制造商:AD 制造商全稱:Analog Devices 功能描述:High Speed, Low Cost, Triple Op Amp |
| ADA4861-3YR-EBZ | 功能描述:BOARD EVAL FOR ADA4861-3YR RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評(píng)估板 - 運(yùn)算放大器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- |
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