STVVGLNA [STMICROELECTRONICS]
General-purpose, variable-gain, low-noise, RF amplifier for broadcast receiver applications; 通用的，可变增益，低噪声，射频放大器，用于广播接收器的应用
| 型号： | STVVGLNA |
| 厂家： | 
ST |
| 描述： | General-purpose, variable-gain, low-noise, RF amplifier for broadcast receiver applications |
| 文件： | 总4页 (文件大小：79K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
STVVGLNA
General-purpose, variable-gain, low-noise, RF amplifier
for broadcast receiver applications
Data brief
Features
■ 75-Ω single-ended input impedance
■ 75-Ω single-ended or 150-Ω differential output
impedance
■ Dual differential or single-ended outputs
■ Single 3.3-V DC supply
■ Input frequency range 50 to 2150 MHz
■ Fully integrated RF AGC with power monitoring
■ Low external component count
Package
■ Low power consumption (145 mW typical)
■ Temperature range -35 °C to 85 °C
■ Compatible with 5-V and 3.3-V I2C bus
■ I2C bus control (option)
■ VFQFPN-16L 3x3x0.85 mm3 with exposed pad
down (EPD)
■ Environmentally friendly packaging, RoHS
(2002/95/EC) compliant.
■ Four selectable I2C addresses C8,CA,CC,CE
Description
Applications
The STVVGLNA is a general-purpose, low-noise
amplifier with a gain range of -17 dB to +15 dB. Its
gain is regulated either autonomously by an
integrated AGC loop or by software control.
■ Satellite set-top boxes
■ SMATV RF accessories
■ LNBs
■ DVB-T active indoor antennas
It can be used, for example, as an input amplifier
for a satellite set-top box.
Figure 1.
STVVGLNA block diagram
STVVGLNA
TV1
tuner
DVR
tuner
AGC loop
F
I2C
VAGCI VAGCO
SCL
SDA
June 2011
Doc ID 018892 Rev 1
1/4
For further information contact your local STMicroelectronics sales office.
www.st.com
4
Introduction
STVVGLNA
1
Introduction
The STVVGLNA is a front-stage amplifier designed for set-top boxes. It has high input
power dynamic range to allow the optimization of sensitivity and linearity requirements.
The STVVGLNA has several operating modes suitable for different signal conditions:
■
automatic wide-band mode, internal AGC (the default mode)
semi-automatic wide-band mode, internal AGC
fixed gain mode, no AGC
■
■
■
variable gain with external AGC (driven by demodulator, for example)
The mode of operation is programmable via the I2C bus.
The STVVGLNA also provides a RF-signal-level indication which may be interrogated via
the I2C bus. This is useful for installation and status information.
At power-on, the STVVGLNA starts in automatic and autonomous AGC mode so that it can
operate in satellite set-top boxes, LNBs or SMATV accessories without any software
assistance.
Features
Benefits
Active amplitude compensation and
balanced/differential operation.
Simplified RF layout and increased robustness to
interference.
Four AGC/Gain programmable operating
modes.
Flexible AGC strategy.
Programmable via I2C bus.
The device can be µP controlled.
Wide range of input frequencies.
Applications range from satellite receivers down to
VHF antenna amplifiers.
Low component count plus tiny package with
exposed pad.
Small BOM and minimal use of PCB area.
Pre programmed automatic wide-band
internal AGC mode.
No micro processor is required if the STVVGLNA is
to be used in default mode.
2/4
Doc ID 018892 Rev 1
STVVGLNA
Ordering information
2
Ordering information
Table 1.
Device summary
Temperature range
Order code
Package
Packaging
STVVGLNA
-35 to 85 °C
-35 to 85 °C
VFQFPN-16L EPD
VFQFPN-16L EPD
Tray
Reel
STVVGLNAT
3
Revision history
Table 2.
Date
01-Jun-2011
Document revision history
Revision
Changes
1
Initial release.
Doc ID 018892 Rev 1
3/4
STVVGLNA
Please Read Carefully:
Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the
right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any
time, without notice.
All ST products are sold pursuant to ST’s terms and conditions of sale.
Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no
liability whatsoever relating to the choice, selection or use of the ST products and services described herein.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this
document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products
or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such
third party products or services or any intellectual property contained therein.
UNLESS OTHERWISE SET FORTH IN ST’S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED
WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS
OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT.
UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZED ST REPRESENTATIVE, ST PRODUCTS ARE NOT
RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING
APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY,
DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE
GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER’S OWN RISK.
Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void
any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any
liability of ST.
ST and the ST logo are trademarks or registered trademarks of ST in various countries.
Information in this document supersedes and replaces all information previously supplied.
The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners.
© 2011 STMicroelectronics - All rights reserved
STMicroelectronics group of companies
Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan -
Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America
www.st.com
4/4
Doc ID 018892 Rev 1
相关型号：
©2020 ICPDF网 联系我们和版权申明