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參數資料
| 型號： | MAX3510EEP |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 衰減器 |
| 英文描述： | Upstream CATV Amplifier |
| 中文描述： | 5 MHz - 65 MHz RF/MICROWAVE NARROW BAND LOW POWER AMPLIFIER |
| 封裝： | QSOP-20 |
| 文件頁數： | 7/12頁 |
| 文件大?。?/td> | 138K |
| 代理商： | MAX3510EEP |
M
Upstream CATV Amplifier
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7
Detailed Description
The following sections describe the blocks shown in the
functional diagram (Figure 1).
Programmable-Gain Amplifier
The programmable-gain amplifier (PGA) consists of the
variable-gain amplifier (VGA) and the digital-to-analog
converter (DAC), which provide better than 52dB of
output level control in 1dB steps.
The PGA is implemented as a programmable Gilbert-
cell attenuator. It uses a differential architecture to
achieve maximum linearity. The gain of the PGA is
determined by a 6-bit word (D5–D0) programmed
through the serial data interface (Tables 2 and 3).
Specified performance is achieved when the input is
driven differentially. The device may be driven single-
ended; however, a slight increase in even-order distor-
tion may result at low output levels. To drive the device
in this manner, one of the input pins must be capaci-
tively 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.
Power Amplifier
The power amplifier is a Class A differential amplifier
capable of driving +64dBmV differentially. This archi-
tecture provides superior even-order distortion perfor-
mance but requires that a transformer be used to
convert to a single-ended output. In transmit-disable
mode, the power amplifier is shut off. An internal resis-
tor is placed across the output, so that the output
impedance remains matched when the amplifier is in
transmit-disable mode. Disabling the output devices
also allows the lowest standby noise.
To achieve the proper load line, the output impedance
of the power amplifier is 300
differential. To match this
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 significant 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.
MAX3510
PGA BIAS
CELL
CEXT2
CEXT1
VOUT+
VOUT-
D/A CONVERTER
RAMP
GENERATOR
POWER
AMP
BIAS
SERIAL DATA INTERFACE
CS
SDA SCLK
TXEN
V
CC
2
VIN+
VIN-
SHDN
V
CC
1
Figure 1. Functional Diagram
相關PDF資料 |
PDF描述 |
|---|---|
| MAX3510 | 2X2 1.5 Gbps LVDS Crosspoint Switch 16-SOIC -40 to 85 |
| MAX352EJE | Precision, Quad, SPST Analog Switches |
| MAX351EJE | Precision, Quad, SPST Analog Switches |
| MAX353MJE | Precision, Quad, SPST Analog Switches |
| MAX351EPE | 2X2 1.5 Gbps LVDS Crosspoint Switch 16-TSSOP -40 to 85 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX3510EEP+ | 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:37.5 dBm 功率增益類型:32 dB 噪聲系數:0.85 dB 工作電源電壓:5 V 電源電流:125 mA 測試頻率:2.6 GHz 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 封裝:Reel |
| MAX3510EEP+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:37.5 dBm 功率增益類型:32 dB 噪聲系數:0.85 dB 工作電源電壓:5 V 電源電流:125 mA 測試頻率:2.6 GHz 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 封裝:Reel |
| MAX3510EEP-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:37.5 dBm 功率增益類型:32 dB 噪聲系數:0.85 dB 工作電源電壓:5 V 電源電流:125 mA 測試頻率:2.6 GHz 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 封裝:Reel |
| MAX3510EVKIT | 功能描述:放大器 IC 開發(fā)工具 RoHS:否 制造商:International Rectifier 產品:Demonstration Boards 類型:Power Amplifiers 工具用于評估:IR4302 工作電源電壓:13 V to 23 V |
| 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:37.5 dBm 功率增益類型:32 dB 噪聲系數:0.85 dB 工作電源電壓:5 V 電源電流:125 mA 測試頻率:2.6 GHz 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 封裝:Reel |
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