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參數(shù)資料
| 型號(hào)： | ARA2000 |
| 廠商： | ANADIGICS, Inc. |
| 英文描述： | Address-Programmable Reverse Amplifier with Step Attenuator |
| 中文描述： | 地址可編程放大器的反向衰減器與步驟 |
| 文件頁(yè)數(shù)： | 1/20頁(yè) |
| 文件大?。?/td> | 215K |
| 代理商： | ARA2000 |
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06/2004
ARA2000
Address-Programmable Reverse
Amplifier with Step Attenuator
Data Sheet - Rev 2.2
FEATURES
Low cost integrated amplifier with step
attenuator
Attenuation Range: 0-58 dB, adjustable in 1dB
increments via a 3 wire serial control
Meets DOCSIS distortion requirements at a
+60dBmV output signal level
Programmable address allows multiple parts
to share control bus
Low distortion and low noise
Frequency range: 5-100MHz
5 Volt operation
-40 to +85
o
C temperature range
APPLICATIONS
MCNS/DOCSIS Compliant Cable Modems
CATV Interactive Set-Top Box
Telephony over Cable Systems
OpenCable Set-Top Box
Residential Gateway
The ARA2000 is designed to provide the reverse
path amplification and output level control functions
in a CATV Set-Top Box or Cable Modem. It
incorporates a digitally controlled precision step
attenuator that is preceded by an ultra low noise
amplifier stage, and followed by an ultra-linear
output driver amplifier. This device uses a balanced
circuit design that exceeds the MCNS/DOCSIS
requirement for harmonic performance at a
+60dBmV output level while only requiring a single
polarity +5V supply. Both the input and output are
matched to 75 ohms with an appropriate
transformer. The precision attenuator provides up
to 58 dB of attenuation in 1 dB increments. The
ARA2000 has a programmable address that allows
multiple devices to share a common control bus.
The ARA2000 is offered in a 28-pin SSOP package
featuring a heat slug on the bottom of the package.
PRODUCT DESCRIPTION
Figure 1: Cable Modem or Set Top Box Application Diagram
S12 Package
28 Pin SSOP
with Heat Slug
Diplexer
ARA2000
SAW
Filter
Double-
Conversion
Tuner
MAC
Upstream
QPSK/16QAM
Modulator
QAM Receiver
with FEC
Balun
Low Pass
Filter
Transmit Enable/Disable
Enable
Data
Clock
Address Control
2
Microcontroller
with Ethernet
MAC
RAM
ROM
10Base-T
Transceiver
RJ45
Connector
Clock
Clock
Data
Data
54-860 MHz
44 MHz
5-42 MHz
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ARA2000S12P1 | Address-Programmable Reverse Amplifier with Step Attenuator |
| ARA2001 | CATV Reverse Amplifier with step Attenuator |
| ARA2001S23 | ER 4C 2#16 2#8 SKT RECP WALL |
| ARA2004 | Reverse Amplifier with Step Attenuator |
| ARA2004RS12P1 | Reverse Amplifier with Step Attenuator |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ARA2000_11 | 制造商:ANADIGICS 制造商全稱:ANADIGICS, Inc 功能描述:Address-Programmable Reverse Amplifier with Step Attenuator |
| ARA2000S12P1 | 制造商:ANADIGICS 制造商全稱:ANADIGICS, Inc 功能描述:Address-Programmable Reverse Amplifier with Step Attenuator |
| ARA2000S12P9 | 制造商:ANADIGICS Inc 功能描述:BROADBAND/CATV (75 OHM) REVERSE AMPLIFIER |
| ARA2000S12TR | 制造商:ANADIGICS Inc 功能描述:BROADBAND/CATV (75 OHM) REVERSE AMPLIFIER |
| ARA2000S23 | 制造商:ANADIGICS 制造商全稱:ANADIGICS, Inc 功能描述:CATV Reverse Amplifier with step Attenuator |
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