TDA8050A Datasheet, PDF (10/28 Pages) NXP Semiconductors – QPSK transmitter

Philips Semiconductors
QPSK transmitter
Product specification
TDA8050A
IF_FILT
imbalance
LO(sup)
FCE435
measure 2 flo(2)
measure 1 flo(2)
frequency
The amplitude imbalance and the LO suppression are measured in the spectrum of the signal measured at the output IF_FILT
and are defined in the following conditions:
measure 1: I input frequency = 500 kHz; I input level = 400 mV (p-p) sine wave; unused input as 0 V differential.
measure 2: Q input frequency = 500 kHz; Q input level = 400 mV (p-p) sine wave; unused input as 0 V differential.
Fig.3 Imbalance and LO suppression.
1999 Nov 05
10