TUA6020 Datasheet, PDF (34/39 Pages) Infineon Technologies AG – 2 Band TV Tuner Mixer-Oscillator-PLL with balanced IF-Amplifier

TUA6020
preliminarytarget
Reference
5.4 Test Circuits
5.4.1 Gain (G_V) test Set-up in LOW/MID band
50 Ω
V ^Vmeas
RMS
Votmeter
50 Ω _Vi
LOW/
MIDIN
IFOUT
Device
under
V₀
Test
Transformer
N1 N2
C
IFOUT
N1 : N2 = 10 : 2 turns
V'_meas
50 Ω
spectrum
analyser
GVHF2

Z_i >> 50 τ => V_i = 2 x V_meas = 80 dBµV

V_i = V_meas + 6dB = 80 dBµV

V₀ = V’_meas + 16 dB (transformer ratio N1:N2 and transformer loss)

G_v = 20 log(V₀ / V_i)
5.4.2 Gain (G_V) test Set-up in HIGH band
50 Ω
V ^Vmeas
RMS
Votmeter
Balun
50 Ω ^Vi
1:1
HIGHIN IFOUT
Device
under
V₀
Test
Transformer
N1 N2
C
HIGHIN IFOUT
N1 : N2 = 10 : 2 turns
V'_meas
50 Ω
spectrum
analyser
GUHF2

V_i = V_meas = 70 dBµV

V₀ = V’_meas + 16 dB (transformer ratio N1:N2 and transformer loss)

G_v = 20 log(V₀ / V_i) + 1 dB (1 dB = insertion loss of balun)
Wireless Components
5 - 13
Specification, April 2000