»ùÓÚTQM879008ϵÄ1.5-2.7 GHz ??W Digital Variable Gain Amplifier

¡¡¡¡Applications ?

¡¡¡¡3G / 4G Wireless Infrastructure ?

¡¡¡¡CDMA£¬ WCDMA£¬ LTE ? Repeaters ?

¡¡¡¡ISM Infrastructure

¡¡¡¡Product Features ?

¡¡¡¡1.5-2.7 GHz Frequency Range ?

¡¡¡¡41.1 dB Maximum Gain at 2.5 GHz ?

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

¡¡¡¡+47.5 dBm Output IP3 ?

¡¡¡¡+27.3 dBm Output P1dB ?

¡¡¡¡Fully Internally Matched Module ?

¡¡¡¡Integrated Blocking Capacitors£¬ Bias Inductors

¡¡¡¡? 3-wire SPI Control Programming

¡¡¡¡General Description

¡¡¡¡The TQM879008 is a digital variable gain amplifier £¨DVGA£© featuring high linearity over the entire gain control range. This amplifier module integrates two gain blocks£¬ a digital-step attenuator £¨DSA£©£¬ and a high linearity ? W amplifier. The module has the added feature of integrating all matching components£¬ bias chokes and blocking capacitors. The internal 6-bit DSA provides a 31.5 dB gain control range in 0.5 dB steps£¬ and is controlled with a serial periphery interface £¨SPITM£©¡£

¡¡¡¡The TQM879008 features variable gain from 10 dB to 41.1dB at 2.5 GHz£¬ +47.5 dBm output IP3£¬ and +27.3 dBm P1dB. The module operates from a single +5V supply and is available in a compact 28-pin 6x6 mm leadless SMT package.

¡¡¡¡The TQM879008 is pin compatible with the TQM829007 £¨0.7-1.0GHz£¬ 0.25W DVGA£© and TQM879006 £¨1.4- 2.7GHz£¬ 0.25W 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.