TDA5736 Datasheet, PDF (10/28 Pages) NXP Semiconductors – 5 V VHF, hyperband and UHF mixers/oscillators for TV and VCR 3-band tuners

Philips Semiconductors
5 V VHF, hyperband and UHF mixers/oscillators
for TV and VCR 3-band tuners
Product specification
TDA5736; TDA5737
7. The frequency drift is defined as the change in oscillator frequency when the ambient temperature varies from
T_amb = 25 to 0 °C and from T_amb = 25 to 50 °C.
8. Switch-on drift is defined as the change in oscillator frequency between 5 s and 15 mins after switch on.
9. With thermal compensation, the capacitors of the tank circuits have the following temperature coefficients:
a) In band A: C1, C6 and C8 are N750.
b) In band B: C4, C11, C12, C13 and C36 are N750.
c) In band C: C5, C7, C9 and C10 are N750; C2 is N220 and C3 is NP0.
10. SRF: spurious signal on LO with respect to LO output signal:
a) RF level = 120 dBµV at f_RF < 180 MHz.
b) RF level = 107.5 dBµV at f_RF = 180 to 225 MHz.
c) RF level = 97 dBµV at f_RF = 225 to 860 MHz.
handbook, full pagewidth
signal
50 Ω ^source
e
V _{meas V}
AIN
IF
out
50 Ω ^Vi
D.U.T.
RMS
voltmeter
GND
IF
out
TR
Vo
2x5
turns
2 ^V'meas
turns
N1/N2 = 5
spectrum
analyzer
50 Ω
MGD264
Z_I (AIN) >> 50 Ω V _i = 2 × V_meas.
V_i = V_meas + 6 dB.
V_o = V_’meas + 15.4 dB (transformer ratio N1/N2 = 5 and transformer loss).
G_v = 20 log (V_o/V_i).
Fig.4 Band A gain measurement.
1997 Feb 24
10