ARA2000

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 c...

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SeekIC No. : 004287928 Detail

ARA2000: 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 requir...

floor Price/Ceiling Price

Part Number:
ARA2000
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/21

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Product Details

Description



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 oC temperature range





Application

• MCNS/DOCSIS Compliant Cable Modems
• CATV Interactive Set-Top Box
• Telephony over Cable Systems
• OpenCable Set-Top Box
• Residential Gateway





Pinout

  Connection Diagram




Specifications

PARAMETER
MIN
MAX
UNIT
Analog Supply (pins 2, 4, 9, 21, 24)
0
9
VDC
Digital Supply: VCMOS (pin 11)
0
6
VDC
Amplifier Controls Vg1, Vg2 (pins 6, 23)
-5
2
V
RF Power at Inputs (pins 5, 8)
-
+60
dBmV
Digital Interface (pins 12, 13, 14, 15, 16)
-0.5
VCMOS+0.5
V
Storage Temperature
-0.5
+200
Soldering Temperature
-
260
Soldering Time
-
5
Sec
Stresses in excess of the absolute ratings may cause permanent damage. Functional
operation is not implied under these conditions. Exposure to absolute ratings for
extended periods of time may adversely affect reliability.
The device may be operated safely over these conditions; however, parametric
performance is guaranteed only over the conditions defined in the electrical specifications.
Notes:
1. Pins 3, 5, 8, 10, 19, 20, 25 and 26 should be AC-coupled. No external DC bias should be
applied.
2. Pins 7 and 22 should be grounded or pulled to ground through a resistor. No external DC
bias should be applied.


Attenuator Step Size (dB) Typ 1
Attenuation Range (dB) Typ 60.3
2nd Harmonic Distortion Level* (dBc) Max -53
3rd Harmonic Distortion Level* (dBc) Max -53
Gain (dB) Typ 29.3
Noise Figure (dB) Typ 3.0
Noise Figure (dB) Max 4.0
Notes * specified at +60 dBmV output





Description

The ARA2000 is designed to provide the reverse path amplification and output level control functions in a CATV Set-Top Box or Cable Modem. ARA2000 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. ARA2000 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.



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.

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.






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