TDA8051 Datasheet, PDF (12/24 Pages) NXP Semiconductors – QPSK receiver

Philips Semiconductors
QPSK receiver
Product specification
TDA8051
handbook, halfpage
I_OUT2
22 dBmV
5 MHz
Q_OUT2
I_OUT
I_OUTC
Q_OUT
Q_OUTC
FCE175
(1) Measure I and Q, α is the difference between the two carriers.
Fig.6 Crosstalk measurement.
handbook, halfpage
RS
2 kΩ
Q_OUT2
Q_OUT
Q_OUTC
FCE176
Fig.7 Noise measurement.
handbook, full pagewidth
Q_OUT1
10 nF _{1.2 kΩ}
100 pF
Q_OUT2
Q_OUT
Q_OUTC
FCE177
LNA input: −15 dBmV; AGC set in order to have a 250 kHz output sine wave at 48 dBmV; f_ref = 70 to 130 MHz; f_lo = 140 to 260 MHz.
Fig.8 LO level, spurious, I/Q gain error and V_o measurements.
1999 Aug 20
12