Print  |  Send  |   

Industry's first dual IF VGA supports multi-mode 4G base station transceivers

January 26, 2012 // Paul Buckley

Industry's first dual IF VGA supports multi-mode 4G base station transceivers

Integrated Device Technology is claiming the industry’s first FlatNoise dual intermediate frequency (IF) variable gain amplifier (VGA) for multi-mode 2G/3G/4G wireless base station transceivers. The company’s devices claim to offer the industry’s best noise figure (4 dB) for maximum gain and virtually no degradation when gain is reduced, improving quality-of-service (QoS) and easing the signal-to-noise ratio (SNR) requirements of the downstream data converter to reduce system cost.


The IDT F1240 and F1241 are dual-channel digitally-controlled IF VGAs featuring IDT’s FlatNoise technology. This technology virtually eliminates noise figure degradation for the critical top 13 dB section of a wide 31 dB gain control range – a stark contrast to other IF VGAs which typically exhibit a dB for dB degradation in noise figure as gain is reduced.

FlatNoise eases the SNR requirements of the system’s data converter, enabling customers to improve signal quality and use a more cost-effective, lower-resolution data converter. For many applications, this allows the customer to downgrade from a 14-bit data converter to a 12-bit data converter with comparable system SNR.
 
The company's IF VGAs feature extremely low distortion (OIP3 = +49 dBm), allowing for higher front-end gain, improving the receiver’s sensitivity and resulting in additional QoS enhancement. The devices operate over a 10 MHz to 500 MHz frequency range with a typical maximum gain of 20 dB and offer the industry’s lowest power consumption (80 mA per channel). In addition, the IF VGAs are accurate, with a gain step error of only 0.04 dB, improving the system SNR performance even further. A parallel or serial communication interface provides control of a 6-bit (0.5 dB: F1240) or 5-bit (1.0 dB: F1241) resolution, giving designers maximum flexibility.

The IDT F1240 and F1241 are currently sampling to qualified customers and are available in a 5x5 mm 32-pin QFN package.

For further information: www.idt.com/go/RF.

All news

Analog & Mixed Signal ICs,MMICs & RFICs

Follow us

Fast, Accurate & Relevant for Design Engineers only!

Technical papers     

Filter Wizard     

Check out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.

Linear video channel

READER OFFER

Read more

This month, Trinamic Motion Control is offering you to win one of four TMCM-1043 development kits for its highly integrated, NEMA 17-compatible TMCM-1043 stepDancer stepper motor module.

Offering designers an easy-to-use PC-based GUI that allows one-click modification of motor drive current, micro-stepping and other key parameters, the intuitive kits are custom designed and developed for...

MORE INFO AND LAST MONTH' WINNERS...

Design centers     

Automotive
Infotainment Making HDTV in the car reliable and secure

December 15, 2011 | Texas instruments | 222901974

Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.

 

You must be logged in to view this page

Login here :