TDA5736 Datasheet, PDF (11/28 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
handbook, full pagewidth
BNC ^C1
L1
I1
PCB
plug
C2
RIM-RIM
(a)
I3
PCB
BNC ^C3
I2
plug
RIM-RIM
C4
(b)
MBE286 - 1
(a) For f_RF = 50 MHz:
mixer A frequency response measured = 57 MHz, loss = 0 dB
image suppression = 16 dB.
C1 = 9 pF
C2 = 15 pF
L1 = 7 turns (diam. = 5.5 mm, wire diam. = 0.5 mm)
I1 = semi rigid cable (RIM): 5 cm long (semi rigid cable (RIM);
33 dB/100 m; 50 Ω; 96 pF/m).
(b) For f_RF = 150 MHz:
mixer A frequency response measured = 150.3 MHz, loss = 1.3 dB
image suppression = 13 dB.
C3 = 5 pF
C4 = 25 pF
I2 = semi rigid cable (RIM): 30 cm long
I3 = semi rigid cable (RIM): 5 cm long (semi rigid cable (RIM);
33 dB/100 m; 50 Ω; 96 pF/m).
Fig.5 Input circuit for optimum noise figure in band A.
handbook, full pagewidth
NOISE
SOURCE
BNC
RIM
INPUT
CIRCUIT
(see Fig. 5)
AIN IFOUT1
D.U.T.
GND IFOUT2
TR
NOISE
METER
2x5
turns
2
turns
N1/N2 = 5
MBH046
NF = NF_meas − loss (input circuit) dB.
Fig.6 Noise figure measurement in band A.
1997 Feb 24
11