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參數(shù)資料
| 型號(hào)： | MAX3514EEP |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 衰減器 |
| 英文描述： | 2X2 1.5 Gbps LVDS Crosspoint Switch 16-SOIC -40 to 85 |
| 中文描述： | 5 MHz - 65 MHz RF/MICROWAVE NARROW BAND MEDIUM POWER AMPLIFIER |
| 封裝： | QSOP-20 |
| 文件頁(yè)數(shù)： | 16/21頁(yè) |
| 文件大?。?/td> | 534K |
| 代理商： | MAX3514EEP |
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M
Upstream CATV Amplifiers
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Detailed Description
Programmable-Gain Amplifier
The PGA consists of the variable-gain amplifier (VGA)
and the digital-to-analog converter (DAC), which pro-
vide better than 56dB of output level control in 0.5dB
steps. The PGA is implemented as a programmable
Gilbert-cell attenuator. The gain of the PGA is deter-
mined by a 7-bit word (D6
–
D0) programmed through
the serial data interface (Tables 1 and 2).
Specified performance is achieved when the input is
driven differentially. The device may be driven single
ended. To drive the device in this manner, one of the
input pins must be capacitively coupled to ground. Use
a capacitor value large enough to allow for a low-
impedance path to ground at the lowest frequency of
operation. For operation down to 5MHz, a 0.001μF
capacitor is suggested.
Output Amplifiers
The output amplifiers are Class A differential amplifiers
capable of driving +61dBmV (QPSK, MAX3514) differ-
entially. This architecture provides superior even-order
distortion performance but requires that a transformer
be used to convert to a single-ended output. In trans-
mit-disable mode, the output amplifiers are powered
down. A resistor is across the output so that the output
impedance remains matched when the amplifier is in
transmit-disable mode. Disabling the output devices
also results in low output noise.
MAX3514/MAX3516
To match the output impedance to a 75
load, the
transformer must have a turns ratio (voltage ratio) of 2:1
(4:1 impedance ratio). The differential amplifier is
biased directly from the +5V supply using the center
tap of the output transformer. This provides a signifi-
cant benefit when switching between transmit mode
and transmit-disable mode. Stored energy due to bias
currents will cancel within the transformer and prevent
switching transients from reaching the load.
MAX3517
The MAX3517 uses external matching resistors to allow
matching to various load impedances through suitable
values of matching resistors and transformer turns
ratios.
Serial Interface
The serial interface has an active-low enable (
CS
) to
bracket the data, with data clocked in MSB first on the
rising edge of SCLK. Data is stored in the storage latch
on the rising edge of
CS
. The serial interface controls
Functional Diagram
MAX3514
MAX3516
MAX3517
GND
SDA SCLK
OUT-
OUT+
*MAX3514/MAX3516 ONLY
IN+
IN-
V
CC
TXEN
SHDN
CEXT
*
BIAS
CONTROL
HIGH
POWER
LOW
NOISE
D/A CONVERTER
SERIAL DATA INTERFACE
CS
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX3517EEP | 2X2 1.5 Gbps LVDS Crosspoint Switch 16-TSSOP -40 to 85 |
| MAX351 | Precision, Quad, SPST Analog Switches(接通電阻35Ω,漏電流0.25nA,導(dǎo)通速率175ns,單刀單擲模擬開(kāi)關(guān),DG411的改進(jìn)型) |
| MAX362 | Precision, Quad, SPST Analog Switches(接通電阻85Ω,漏電流0.5nA,導(dǎo)通速率250ns,單刀單擲模擬開(kāi)關(guān),DG441的改進(jìn)型) |
| MAX361 | Precision, Quad, SPST Analog Switches(接通電阻85Ω,漏電流0.5nA,導(dǎo)通速率250ns,單刀單擲模擬開(kāi)關(guān),DG441的改進(jìn)型) |
| MAX3654 | Dual LVDS Transmitter/Receiver 16-TSSOP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX3514EEP+ | 功能描述:射頻放大器 RoHS:否 制造商:Skyworks Solutions, Inc. 類型:Low Noise Amplifier 工作頻率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 輸出截獲點(diǎn):37.5 dBm 功率增益類型:32 dB 噪聲系數(shù):0.85 dB 工作電源電壓:5 V 電源電流:125 mA 測(cè)試頻率:2.6 GHz 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 封裝:Reel |
| MAX3514EEP+T | 功能描述:射頻放大器 RoHS:否 制造商:Skyworks Solutions, Inc. 類型:Low Noise Amplifier 工作頻率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 輸出截獲點(diǎn):37.5 dBm 功率增益類型:32 dB 噪聲系數(shù):0.85 dB 工作電源電壓:5 V 電源電流:125 mA 測(cè)試頻率:2.6 GHz 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 封裝:Reel |
| MAX3514EEP-T | 功能描述:射頻放大器 RoHS:否 制造商:Skyworks Solutions, Inc. 類型:Low Noise Amplifier 工作頻率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 輸出截獲點(diǎn):37.5 dBm 功率增益類型:32 dB 噪聲系數(shù):0.85 dB 工作電源電壓:5 V 電源電流:125 mA 測(cè)試頻率:2.6 GHz 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 封裝:Reel |
| MAX3514EVKIT | 功能描述:放大器 IC 開(kāi)發(fā)工具 MAX3514/16/17 Eval Kit RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類型:Power Amplifiers 工具用于評(píng)估:IR4302 工作電源電壓:13 V to 23 V |
| MAX3516EUP | 功能描述:射頻放大器 RoHS:否 制造商:Skyworks Solutions, Inc. 類型:Low Noise Amplifier 工作頻率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 輸出截獲點(diǎn):37.5 dBm 功率增益類型:32 dB 噪聲系數(shù):0.85 dB 工作電源電壓:5 V 電源電流:125 mA 測(cè)試頻率:2.6 GHz 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 封裝:Reel |
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