PCF5078 Datasheet, PDF (2/20 Pages) NXP Semiconductors – Power amplifier controller for GSM and PCN systems

Philips Semiconductors
Power amplifier controller for GSM and
PCN systems
Product specification
PCF5078
FEATURES
• Compatible with baseband interface family PCF5073x
• Two power sensor inputs
• Temperature compensation of sensor signal
• Active filter for DAC input
• Power Amplifier (PA) protection against mismatching
• Bias current source for detector diodes
• Generation of pre-bias level for PA at start of burst
(home position)
• Possibility to adapt home position by external
components
• Applicable for a wide range of silicon and GaAs power
amplifiers.
APPLICATIONS
• Global System for Mobile communication (GSM)
• Personal Communications Network (PCN) systems.
GENERAL DESCRIPTION
This CMOS device integrates an amplifier for the detected
RF voltage from the sensor, an integrator and an active
filter to build a PA control loop for cellular systems with a
small amount of passive components.
QUICK REFERENCE DATA
SYMBOL
V_DD
I_DD(tot)
T_amb
PARAMETER
supply voltage
total supply current
operating ambient temperature
MIN.
2.4
−
−40
TYP.
3.6
−
−
MAX.
5.0
6
+85
UNIT
V
mA
°C
ORDERING INFORMATION
TYPE
NUMBER
PCF5078T
PACKAGE
NAME
DESCRIPTION
TSSOP8 plastic thin shrink small outline package; 8 leads; body width 3.0 mm
VERSION
SOT505-1
1999 Apr 12
2