»ùÓÚTQM879006AϵÄ1.4 ?2.7 GHz ? W Digital Variable Amplifier

¡¡¡¡Applications

¡¡¡¡? 3G / 4G Wireless Infrastructure

¡¡¡¡? CDMA£¬ TD-CDMA£¬ WCDMA£¬ LTE

¡¡¡¡? Repeaters ? PTP Radio IF Chains

¡¡¡¡Product Features

¡¡¡¡? 1.4-2.7 GHz Frequency Range

¡¡¡¡? 31.7 dB Maximum Gain at 2 GHz

¡¡¡¡? 31.5 dB Gain Range in 0.5 dB Steps

¡¡¡¡? +43 dBm Output IP3

¡¡¡¡? +24.5 dBm Output P1dB

¡¡¡¡? 1.5 dB Noise Figure at Max. Gain State

¡¡¡¡? Fully Internally Matched Module

¡¡¡¡? Integrated Blocking Capacitors£¬ Bias Inductors

¡¡¡¡? 3-wire SPI Control Programming

¡¡¡¡General Description

¡¡¡¡The TQM879006A is a digital variable gain amplifier £¨DVGA£© featuring high linearity over the entire gain control range. The amplifier module features the integration of a low noise amplifier gain block£¬ a digitalstep attenuator £¨DSA£©£¬ along with a high linearity ?W amplifier. The module has the added features of integrating all matching components with bias chokes and blocking capacitors. The internal DSA offers 0.5 dB step£¬ 6-bit£¬ and 31.5 dB range and is controlled with a serial periphery interface £¨SPITM£©¡£ The TQM879006A features variable gain from 0 dB to 31.7 dB at 2 GHz£¬ has +43 dBm Output IP3£¬ and +24.5 dBm P1dB.

¡¡¡¡The amplifier also has a very low 1.5 dB Noise Figure £¨at maximum gain£© allowing it to be an ideal DVGA for both receiver and transmitter applications. The amplifier operates from a single +5V supply and is available in a compact 28-pin 6x6 mm leadless SMT package.

¡¡¡¡The TQM879006A is pin compatible with the TQM829007 £¨0.6-1GHz£¬ 0.25W DVGA£© and TQM879008 £¨1.5-2.7 GHz£¬ 0.5W DVGA£©¡£ This allows one to size the right type of device for specific system level requirements as well as making the DVGA family ideal for applications where a common PCB layout is used for different frequency bands.