STPAC02F1 Datasheet, PDF (1/5 Pages) STMicroelectronics – RF DETECTOR FOR POWER AMPLIFIER CONTROL WITH INTERNAL TEMPERATURE COMPENSATION IPADTM

®
STPAC02F1
RF DETECTOR FOR POWER AMPLIFIER CONTROL
IPAD^TM _{WITH INTERNAL TEMPERATURE COMPENSATION}
MAIN PRODUCT CHARACTERISTICS
■ 0.8 to 2.5GHz frequency range
■ Detection diode voltage drop compensation
■ Temperature compensation
■ Fast response time
■ Low Power consumption
■ Chip Scale device
■ Low parasitic impedance
DESCRIPTION
The STPAC02F1 is an integrated RF detector for
power control chain. It has been developed to
convert the RF signal coming from the external
coupler into a DC signal usable by the mobile
digital stage. It is based on the use of two similar
diodes, one assuming the signal detection while
the second one is used to compensate the ambient
temperature effect. A biasing stage suppresses
the detection diode drop voltage effect. The use of
the IPAD technology allows the RF front-end
designer to save PCB area and to drastically
suppress the parasitic inductances of the package.
Target applications are cellular phones and PDA
using GSM, DCS, PCS, AMPS, TDMA , CDMA
and 800MHz to 2100MHz frequency ranges.
BENEFITS
■ The use of IPAD technology allows the RF
front-end designer to save PCB area and to
drastically suppress the parasitic inductances.
FUNCTIONAL DIAGRAM
Flip-Chip package
PIN CONFIGURATION (ball side)
3
2
1
OUT _uNsoetd
A
GND GND GND B
RFin GND VBias C
Coupler
Antenna
DC output
OUT
RF input
Low pass
filter
RF detector
STPAC02F1
Bias voltage
VBIAS
Thermal
compensation
GND
TM : IPAD is a trademark of STMicroelectronics.
October 2003 - Ed: 1
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