ARA2017_12 Datasheet, PDF (1/17 Pages) ANADIGICS, Inc – Programmable Gain Amplifier

ARA2017
Programmable Gain Amplifier
DATA SHEET - rev 2.1
features
• High Linearity, High Output Power Integrated
Amplifier with Programmable Gain Control
• Attenuation Range: 0-58 dB, Adjustable in
2 dB Increments via a 3-wire Serial Control
• 33 dB Gain (at Minimum Attenuation)
• Low Distortion Products at Output Power Levels
up to +64 dBmV
• Low Noise Figure and Output Noise
• Frequency range: 5-85 MHz
• 5 V Operation
• Materials set consistent with RoHS Directives.
Surface Mount Package
Applications
• DOCSIS 3.0 Data Cable Modems and E-MTAs
• CATV Set Top Boxes
S29 Package
28-Pin QFN
5 mm x 5 mm x 1 mm
PRODUCT DESCRIPTION
The ARA2017 is a highly linear, high output power,
programmable gain amplifier optimized for DOCSIS
3.0 cable modem and E-MTA applications. Using a
low noise input amplification stage and an ultra linear
output driver amplifier, the device generates extremely
low distortion products at the high output power levels
required by DOCSIS 3.0 signals. Its balanced circuit
design provides superior harmonic performance
and an integrated digitally-controlled, multiple-stage
precision step attenuator enables system solutions to
meet DOCSIS power step accuracy requirements.
The ARA2017 supports output power levels of +64
dBmV while minimizing harmonic, distortion, and
output noise levels. Its precision attenuator provides
up to 58 dB of attenuation in 2 dB increments, which
is set by programming the register via a 3-wire serial
interface. The output stage current, a feature which
allows the device to be operated in reduced power
modes for extended backup battery life, is also
programmed through the 3-wire serial interface. The
ARA2017 is offered in a 28-pin 5 mm x 5 mm x 1 mm
QFN package.
Figure 1: Functional Block Diagram
11/2012