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參數(shù)資料
| 型號(hào)： | ADA4432-1BRJZ-R7 |
| 廠商： | Analog Devices Inc |
| 文件頁(yè)數(shù)： | 10/29頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC SD VIDEO FILTER AMP SOT23-6 |
| 標(biāo)準(zhǔn)包裝： | 3,000 |
| 應(yīng)用： | 車載系統(tǒng) |
| 輸出類型： | 單端 |
| 電路數(shù)： | 1 |
| -3db帶寬： | 10.5MHz |
| 電流 - 電源： | 7.6mA |
| 電流 - 輸出 / 通道： | 50mA |
| 電壓 - 電源，單路/雙路(±)： | 2.6 V ~ 3.6 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | SOT-23-6 |
| 供應(yīng)商設(shè)備封裝： | SOT-23-6 |
| 包裝： | 帶卷 (TR) |
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Data Sheet
ADA4432-1/ADA4433-1
Rev. A | Page 17 of 28
APPLICATIONS INFORMATION
METHODS OF TRANSMISSION
Pseudo Differential Mode (Unbalanced Source
Termination)
The ADA4432-1 can be used as a pseudo differential driver
with an unbalanced transmission line. Pseudo differential mode
uses a single conductor to carry an unbalanced data signal from
the driver to the receiver, while a second conductor is used as a
ground reference signal.
The positive conductor connects the ADA4432-1 output to the
positive input of a differential receiver, such as ADA4830-1. The
negative wire or ground conductor from the source circuitry
connects to the negative input of the receiver. Match the impedance
of the input termination at the receiver to the output termination
of the ADA4432-1 (see Figure 43).
Figure 43. Pseudo Differential Mode
Pseudo Differential Mode (Balanced Source Impedance)
Pseudo differential signaling is typically implemented using
unbalanced source termination, as shown in Figure 43. With this
arrangement, however, common-mode signals on the positive
and negative inputs receive different attenuation due to unbalanced
termination at the source. This effectively converts some of the
common-mode signal into a differential mode signal, degrading
the overall common-mode rejection of the system. System
common-mode rejection can be improved by balancing the output
impedance of the driver, as shown in Figure 44. Splitting the source
termination resistance evenly between the hot and cold conductors
results in matched attenuation of the common-mode signals,
ensuring maximum rejection.
Figure 44. Pseudo Differential Mode with Balanced Source Impedance
Fully Differential Mode
The ADA4433-1 is designed to be used as a fully differential driver.
The differential outputs of the ADA4433-1 allow fully balanced
transmission using twisted or untwisted pair cable. In this
configuration, the differential output termination consists of two
source resistors, one on each output, and each equal to half the
receiver input termination. For example, in a 75 system, each
output of the ADA4433-1 is back terminated with 37.5 resistors
that are connected to a differential resistance of 75 at the receiver.
An illustration of this arrangement is shown in Figure 45.
Figure 45. Fully Differential Mode
PRINTED CIRCUIT BOARD (PCB) LAYOUT
As with all high speed applications, attention to PCB layout is of
paramount importance. Adhere to standard high speed layout
practices when designing with the ADA4432-1 and ADA4433-1.
A solid ground plane is recommended. Place a 0.1 F surface-
mount, ceramic power supply decoupling capacitor as close as
possible to the supply pin.
Connect the GND pin(s) to the ground plane with a trace that is
as short as possible. Use controlled impedance traces of the shortest
length possible to connect to the signal I/O pins and do not run the
traces over any voids in the ground plane. A 75 impedance level
is typically used in video applications. All signal outputs of the
ADA4432-1 and ADA4433-1 should include series termination
resistors when driving transmission lines.
When the ADA4432-1 or the ADA4433-1 receives its inputs from a
device with current outputs, the required load resistor value for
the output current is most often different from the characteristic
impedance of the signal traces. In this case, if the interconnections
are sufficiently short (less than 2 inches), the trace does not
need to be terminated in its characteristic impedance.
INN
INP
ADA4830-1
75
+
75
POSITIVE WIRE
NEGATIVE WIRE
DRIVER PCB
ADA4432-1
10597-
025
INN
INP
ADA4830-1
75
+
37.5
37.5
POSITIVE WIRE
NEGATIVE WIRE
DRIVER PCB
ADA4432-1
10597-
026
INN
INP
ADA4830-1
75
+
37.5
37.5
POSITIVE WIRE
NEGATIVE WIRE
DRIVER PCB
ADA4433-1
10597-
027
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADA4432-1WBCPZ-R7 | 制造商:AD 制造商全稱:Analog Devices 功能描述:SD Video Filter Amplifiers |
| ADA4432-1WBRJZ-R2 | 功能描述:IC SD VIDEO FILTER AMP 6SOT23 制造商:analog devices inc. 系列:- 包裝:帶卷（TR） 零件狀態(tài):過(guò)期 應(yīng)用:車載系統(tǒng) 輸出類型:單端 電路數(shù):1 -3db 帶寬:10.5MHz 壓擺率:- 電流 - 電源:7.6mA 電流 - 輸出/通道:50mA 電壓 - 電源，單/雙（±）:2.6 V ~ 3.6 V 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應(yīng)商器件封裝:SOT-23 標(biāo)準(zhǔn)包裝:250 |
| ADA4432-1WBRJZ-R7 | 制造商:AD 制造商全稱:Analog Devices 功能描述:SD Video Filter Amplifiers |
| ADA4433-1 | 制造商:AD 制造商全稱:Analog Devices 功能描述:SD Video Filter Amplifiers |
| ADA4433-1BCP-EBZ | 制造商:AD 制造商全稱:Analog Devices 功能描述:SD Video Filter Amplifiers |
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