ARA1400S12CTR ANADIGICS  ANADIGICS, Inc, ARA1400S12CTR Datasheet

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ARA1400S12CTR

Manufacturer Part Number
ARA1400S12CTR
Description
ARA1400S12CTRReverse Amplifier with Step Attenuator
Manufacturer
ANADIGICS  ANADIGICS, Inc
Datasheet
1.ARA1400S12CTR.pdf (12 pages)
FEATURES
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APPLICATIONS
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PRODUCT DESCRIPTION
The ARA1400 is a GaAs IC 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. The device is capable of
meeting the MCNS/DOCSIS requirements for
Low cost integrated monolothic GaAs amplifier
with step attenuator
Attenuation Range: 0-56 dB, adjustable in
4 dB increments via a 4 wire parallel control
Meets DOCSIS distortion requirements at
+60 dBmV output signal level
Low distortion and low noise
Frequency range: 5-100 MHz
5 Volt operation
0 to +85 °C temperature range
MCNS/DOCSIS Compliant Cable Modems
CATV Interactive Set-Top Box
Telephony over Cable Systems
OpenCable Set-Top Box
Residential Gateway
5-42 MHz
Diplexer
54-860 MHz
Figure 1: Cable Modem or Set Top Box Application Diagram
ARA1400
Conversion
Double-
Tuner
4
Transmit Enable/Disable
Attenuation Control
LPF
44 MHz
SAW
Filter
Balun
03/2004
harmonic performance at a +60dBmV output level
while requiring only a single polarity +5V supply.
Both the input and the output are single-ended and
matched to 75 Ohms, and a precision attenuator
provides up to 56 dB of attenuation in 4 dB
increments. The device is offered in a 28-pin SSOP
package featuring a heat slug on the bottom of the
package.
QAM Receiver
QPSK/16QAM
Reverse Amplifier with Step Attenuator
Modulator
Upstream
with FEC
28 Pin SSOP with Heat Slug
Clock
Clock
MAC
S12 Package
Data
Data
RAM
Microcontroller
with Ethernet
Transceiver
10Base-T
MAC
Data Sheet - Rev 2.1
ROM
ARA1400
RJ45
Connector

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ARA1400S12CTR Summary of contents

Page 1

FEATURES • Low cost integrated monolothic GaAs amplifier with step attenuator • Attenuation Range: 0-56 dB, adjustable increments via a 4 wire parallel control • Meets DOCSIS distortion requirements at +60 dBmV output signal level • Low ...

Page 2

ARA1400 RF ATT OUT1 AMP ISET1 step digital attenuator section ...

Page 3

...

Page 4

ARA1400 ELECTRICAL CHARACTERISTICS Table 2: Absolute Minimum and Maximum Ratings ...

Page 5

...

Page 6

ARA1400 ( ° ATTN ...

Page 7

Figure 4: Test Circuit Data Sheet - Rev 2.1 03/2004 ARA1400 ...

Page 8

ARA1400 APPLICATION INFORMATION Amplifier Enable / Disable The ARA1400 includes two amplification stages that each can be shut down through external control pins V and V (pins 5 and 18, respectively). By REF1 REF2 applying a typical bias of 1.75 ...

Page 9

TYP. 0.242 0.085 0.025 BSC 0.016 TYP. 0.091 0.163 0.145 Figure 6: Solder Mask Outline Data Sheet - Rev 2.1 03/2004 ARA1400 0.0535 0.098 DIMENSIONS IN INCHES 9 ...

Page 10

ARA1400 PACKAGE OUTLINE Figure 7: S12 Package Outline - 28 Pin SSOP with Heat Slug 10 Data Sheet - Rev 2.1 03/2004 ...

Page 11

COMPONENT PACKAGING Volume quantities of the ARA1400 are supplied on tape and reel. Each reel holds 3,500 pieces. Smaller quantities are available in plastic tubes of 50 pieces. Figure 8: Reel Dimensions Figure 9: Tape Dimensions Data Sheet - Rev ...

Page 12

ARA1400 ORDERING INFORMATION ...

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