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參數(shù)資料
型號(hào)： AD8129AR-REEL7
廠商： ANALOG DEVICES INC
元件分類： 模擬信號(hào)調(diào)理
英文描述： Low Cost 270 MHz Differential Receiver Amplifiers
中文描述： SPECIALTY ANALOG CIRCUIT, PDSO8
封裝： SOIC-8
文件頁(yè)數(shù)： 34/40頁(yè)
文件大小： 549K
代理商： AD8129AR-REEL7
AD8129/AD8130
Rev. C | Page 34 of 40
R
F
1k
Ω
0.1
μ
F
10
μ
F
–V
V
OUT
+V
0.1
μ
F
10
μ
F
V
IN
R1
100
Ω
C1
200pF
R
G
499
Ω
–V
S
2
PD
+V
S
+
+
AD8130
100
Ω
6
5
4
8
1
3
7
0
Figure 134. An Equalizer Circuit for Composite Video Transmissions
over 300 Meters of Category-5 Cable
20
10
–10
–20
–30
–40
–50
–60
–70
–80
FREQUENCY (Hz)
I
0
10k
100k
1M
10M
100M
0
Figure 135. Transmission Response of 300 Meters of Category-5 Cable
The feedback network is between Pin 6 and Pin 5 and from
Pin 5 to ground. C1 and R
F
create a corner frequency of about
800 kHz. The gain increases to provide about 15 dB of boost
at 8 MHz. The response of this circuit is shown in Figure 136.
20
10
–10
–20
–30
–40
–50
–60
–70
–80
FREQUENCY (Hz)
I
0
10k
100k
1M
10M
100M
0
Figure 136. Frequency Response of Equalizer Circuit
It is difficult to calculate the exact component values via strictly
mathematical means, because the equations for the cable
attenuation are approximate and have functions that are not
simply related to the responses of RC networks. The method
used in this design was to approximate the required response
via graphical means from the frequency response and then
select components that would approximate this response. The
circuit was then built, measured, and finally adjusted to obtain
an acceptable response—in this case, flat to 9 MHz to within
approximately 1 dB (see Figure 137).
20
10
–10
–20
–30
–40
–50
–60
–70
–80
FREQUENCY (Hz)
I
0
10k
100k
1M
10M
100M
0
Figure 137. Combined Response of Cable Plus Equalizer
OUTPUT OFFSET/LEVEL TRANSLATOR
The circuit in Figure 133 has the reference input (Pin 4) tied to
ground, which produces a ground-referenced output signal. If it
is desired to offset the output voltage from ground, the REF
input can be used (see Figure 138). The level V
OFFSET
appears at
the output with unity gain.
0.1
μ
F
–V
V
OUT
= V
IN
+V
OFFSET
+V
0.1
μ
F
10
μ
F
V
IN
V
OFFSET
–V
S
2
PD
+V
S
+
+
AD8130
10
μ
F
6
5
4
8
1
3
7
0
Figure 138. The Voltage Applied to Pin 4 to the Unity-Gain Output Voltage
Produced by V
IN
If the circuit has a gain higher than unity, the gain must be
factored in. If R
G
is connected to ground, the voltage applied to
REF is multiplied by the gain of the circuit and appears at the
output—just like a noninverting conventional op amp. This
situation is not always desirable; the user may want V
OFFSET
to
appear at the output with unity gain.
相關(guān)PDF資料
PDF描述
AD8129ARZ Low Cost 270 MHz Differential Receiver Amplifiers
AD8129ARZ-REEL Low Cost 270 MHz Differential Receiver Amplifiers
AD8129ARZ-REEL7 Low Cost 270 MHz Differential Receiver Amplifiers
AD8130ARM-REEL Low Cost 270 MHz Differential Receiver Amplifiers
AD8130ARM-REEL7 Low Cost 270 MHz Differential Receiver Amplifiers
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD8129AR-REEL72 制造商:AD 制造商全稱:Analog Devices 功能描述:Low-Cost 270 MHz Differential Receiver Amplifiers
AD8129ARZ 功能描述:IC AMP DIFF LN LDIST 40MA 8SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 產(chǎn)品培訓(xùn)模塊:Differential Circuit Design Techniques for Communication Applications 標(biāo)準(zhǔn)包裝:1 系列:- 放大器類型:RF/IF 差分 電路數(shù):1 輸出類型:差分 轉(zhuǎn)換速率:9800 V/µs 增益帶寬積:- -3db帶寬:2.9GHz 電流 - 輸入偏壓:3µA 電壓 - 輸入偏移:- 電流 - 電源:40mA 電流 - 輸出 / 通道:- 電壓 - 電源，單路/雙路(±):3 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-VQFN 裸露焊盤，CSP 供應(yīng)商設(shè)備封裝:16-LFCSP-VQ 包裝:剪切帶 (CT) 產(chǎn)品目錄頁(yè)面:551 (CN2011-ZH PDF) 其它名稱:ADL5561ACPZ-R7CT
AD8129ARZ-REEL 功能描述:IC AMP DIFF LN LDIST 40MA 8SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 放大器類型:通用 電路數(shù):2 輸出類型:滿擺幅 轉(zhuǎn)換速率:1.8 V/µs 增益帶寬積:6.5MHz -3db帶寬:4.5MHz 電流 - 輸入偏壓:5nA 電壓 - 輸入偏移:100µV 電流 - 電源:65µA 電流 - 輸出 / 通道:35mA 電壓 - 電源，單路/雙路(±):1.8 V ~ 5.25 V，±0.9 V ~ 2.625 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:管件
AD8129ARZ-REEL7 功能描述:IC AMP DIFF LN LDIST 40MA 8SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 放大器類型:通用 電路數(shù):2 輸出類型:滿擺幅 轉(zhuǎn)換速率:1.8 V/µs 增益帶寬積:6.5MHz -3db帶寬:4.5MHz 電流 - 輸入偏壓:5nA 電壓 - 輸入偏移:100µV 電流 - 電源:65µA 電流 - 輸出 / 通道:35mA 電壓 - 電源，單路/雙路(±):1.8 V ~ 5.25 V，±0.9 V ~ 2.625 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:管件
AD8129-EVAL 制造商:Analog Devices 功能描述:AD8129 EVALUATION BOARD
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