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參數(shù)資料
| 型號(hào)： | MAX4029EWP+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 13/13頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP VIDEO MUX 2:1 20-SOIC |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 應(yīng)用： | 2:1 多路復(fù)用器-放大器 |
| 電路數(shù)： | 4 |
| -3db帶寬： | 210MHz |
| 轉(zhuǎn)換速率： | 300 V/µs |
| 電流 - 電源： | 38mA |
| 電流 - 輸出 / 通道： | 30mA |
| 電壓 - 電源，單路/雙路(±)： | 4.5 V ~ 5.5 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-SOIC（0.295"，7.50mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 20-SOIC W |
| 包裝： | 帶卷 (TR) |
The MAX4028/MAX4029 have a fixed gain of +2V/V that
is internally set with two 1k
thin-film resistors. The
impedance of the internal feedback resistors must be
taken into account when operating multiple MAX4028/
MAX4029s in large multiplexer applications.
Applications Information
Video Line Driver
The MAX4028/MAX4029 are well suited to drive coaxial
transmission lines when the cable is terminated at both
ends, as shown in Figure 3, where the fixed gain of
+2V/V compensates for the loss in the resistors, RT.
Driving Capacitive Loads
A correctly terminated transmission line is purely resis-
tive and presents no capacitive load to the amplifier.
Reactive loads decrease phase margin and may pro-
duce excessive ringing and oscillation.
Another concern when driving capacitive loads is the
amplifier’s output impedance, which appears inductive
at high frequencies. This inductance forms an L-C reso-
nant circuit with the capacitive load, which causes
peaking in the frequency response and degrades the
amplifier’s phase margin.
MAX4028/MAX4029
Triple/Quad, 2:1 Video
Multiplexer-Amplifiers with Input Clamps
_______________________________________________________________________________________
9
Table 2. MAX4029 Clamp Settings for Video Formats
INPUT
FORMAT
CLAMP/KEY
1
Cvbs1
Clamp
2
Cvbs2
Clamp
3
Cvbs3
Clamp
4
Cvbs4
Clamp
Gs, B, R have sync only on Green.
INPUT
FORMAT
CLAMP/KEY
1H-Sync
Clamp
2G
Key
3B
Key
4R
Key
R, G, B have sync on none.
INPUT
FORMAT
CLAMP/KEY
1Y
Clamp
2C
Key
3
Cvbs
Clamp
4
Cvbs
Clamp
R, G, B have sync on all.
RT
75
RT
75
RT
75
OUT_
IN_A
IN_B
A/B
DISABLE
0.1
F
75
CABLE
75
CABLE
RT
75
0.1
F
75
CABLE
RKEYREF
MAX4028
MAX4029
CLAMP
Figure 3. Video Line Driver
INPUT
FORMAT
CLAMP/KEY
1Gs
Clamp
2R
Key
3B
Key
4
Cvbs
Clamp
INPUT
FORMAT
CLAMP/KEY
1Y
Clamp
2Pr
Key
3Pb
Key
4
Cvbs
Clamp
INPUT
FORMAT
CLAMP/KEY
1
Cvbs
Clamp
2G’
Clamp
3B’
Clamp
4R’
Clamp
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