U4062B Datasheet, PDF (19/21 Pages) TEMIC Semiconductors – HF Front End for Car Radios and HiFi Receivers

VHF/UHF-Application
U4062B
Figure 47. Test circuit for conversion gain and noise measurement
Mixer, VHF Characteristics
Test conditions:
W W R_g5 = 50 , R_L12–13 = 200 , V_S = 10 V
f_IF = 10.7 MHz, f_iRF = 200 MHz, f_OSC = f_iRF + f_IF, V_OSC17 = 140 mV
Parameter
Conversion power gain, f_IF = 10.7 MHz
f_IF = 70 MHz
Double side band noise figure f_OSC = 200 MHz
3rd order intercept input signal level
Parallel input resistance, Pin 5, f = 200 MHz
Parallel input capacitance, Pin 5, f= 200 MHz
Parallel input resistance, Pin 17, f = 200 MHz
Parallel input capacitance, Pin 17, f = 200 MHz
Conversion transconductance
Symbol
G_C
G_C
NF_DSB
IP₃
Rp₅
Cp₅
Rp₁₇
Cp₁₇
G_C
Typ.
2.5
2.3
8.2
5.5
1500
3.3
4000
2.7
6.4
1
12
Unit
dB
dB
dB
dBm
W
pF
W
pF
m-mho
0.5
11
0
10
280mV
–0.5
9
70mV
–1
8
70mV
140mV
280mV
–1.5
–2
0
95 10444
140mV
100 200 300 400 500
f_OSC ( MHz )
Figure 48. G_C vs. f_OSC
7
6
0
100
200
300
400 500
95 10445
f_OSC ( MHz )
Figure 49. NF_DSB vs. f_OSC
Rev. A1, 07-Dec-98
19 (21)