TRF8011

The TRF8011 RF transmit driver amplifier is for use in 800 to 1000 MHz wireless communication systems. It consists of a two-stage amplifier and a linear ramp controller for burst control in TDMA (time-division multiple access) applications. Very few external components are required for operation. The input of TRF8011 is dc-blocked and requires no external matching. The output requires external matching suitable for the application frequency. The TRF8011 is enabled when the TXEN input is held high. A power control signal applied to the VPC input can ramp the RF output power up or down to meet ramp and spurious emission specifications in TDMA systems.

The power control signal of TRF8011 causes a linear change in output power as the voltage applied to VPC varies between 0 V and 3 V.  With the RF input power applied to RFIN at 5 dBm and TXEN high, adjusting VPC from 0 V to 3 V increases the output power from a typical value of 50 dBm to 24.5 dBm at 900 MHz. Forward isolation with the input power applied to RFIN at 5 dBm, VPC = 0 V, and TXEN high of TRF8011  is typically greater than 50 dB.

The TRF8011 is available in a thermally enhanced, surface-mount, 20-pin PowerPADTM  (PWP) thin-shrink small outline package (TSSOP) and is characterized for operation from 40°C to 85°C. The PWP package has a solderable pad that can improve the package thermal performance by bonding the pad to an external thermal plane. The pad of TRF8011 also acts as a low-inductance electrical path to ground and must be electrically connected to the PCB ground plane as a continuation of the regular package terminals that are designated GND.