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參數(shù)資料
| 型號： | MAX4144ESD+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 5/16頁 |
| 文件大小： | 0K |
| 描述： | IC RX DIFF LINE HS 14-SOIC |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 類型： | 接收器 |
| 驅(qū)動器/接收器數(shù)： | 0/3 |
| 電源電壓： | 4.5 V ~ 5.5 V |
| 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) |
MAX4144/MAX4145/MAX4146
High-Speed, Low-Distortion,
Differential Line Receivers
______________________________________________________________________________________
13
which appears inductive at high frequencies. This
inductance forms an L-C resonant circuit with the
capacitive load, which causes peaking in the frequency
response and degrades the amplifier’s phase margin.
The MAX4144/MAX4145/MAX4146 drive capacitive
loads up to 25pF without oscillation. However, some
peaking may occur in the frequency domain (Figure 4).
To drive larger capacitance and reduce ringing, add an
isolation resistor (RISO) between the amplifier’s output
and the load (Figure 5).
The value of RISO depends on the circuit’s gain and the
capacitive load (Figures 6 and 7). With higher capaci-
tive values, bandwidth is dominated by the RC network
formed by RISO and CL; the bandwidth of the amplifier
itself is much higher. Also note that the isolation resistor
forms a divider that decreases the voltage delivered to
the load.
Twisted-Pair Line Receiver
The MAX4144/MAX4145/MAX4146 are well suited as
receivers in twisted-pair xDSL or NTSC/PAL video
applications. The standard 24AWG telephone wire
widely used in these applications is a lossy medium for
high-frequency signals. The losses in NTSC video
applications are almost 15dB per 1000 feet (Figure 8).
4
0
8
6
CAPACITIVE LOAD (pF)
ISOLATION
RESISTANCE
(Ω
)
200
16
18
12
10
14
50
150
250
20
100
AV = 10V/V
Figure 6. MAX4144 Isolation Resistance vs. Capacitve Load
0
5
CAPACITIVE LOAD (pF)
ISOLATION
RESISTANCE
(Ω
)
200
25
15
10
20
50
150
250
30
100
Figure 7. MAX4145/MAX4146 Isolation Resistance vs.
Capacitive Load
RLOAD
CLOAD
RISO
OUT
MAX4144
MAX4145
MAX4146
Figure 5. Addition of RISO to Amplifier Output
15
-35
-30
-25
10k
1M
10M
-20
-15
-10
-5
0
5
10
100k
FREQUENCY (Hz)
GAIN
(dB)
Figure 8. 1000 Feet of 24AWG Twisted-Pair Telephone Cable
(Gain vs. Frequency)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX4144EVKIT | 功能描述:放大器 IC 開發(fā)工具 RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類型:Power Amplifiers 工具用于評估:IR4302 工作電源電壓:13 V to 23 V |
| MAX4144-MAX4146 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:High-Speed, Low-Distortion, Differential Line Receivers |
| MAX4145 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Evaluation Kits for the MAX2820/MAX2821[MAX2820EVKIT/MAX2821EVKIT ] |
| MAX4145EEE | 功能描述:特殊用途放大器 RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補(bǔ)償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
| MAX4145EEE+ | 功能描述:特殊用途放大器 RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補(bǔ)償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
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