U4065B Datasheet, PDF (17/34 Pages) TEMIC Semiconductors – FM Receiver

U4065B
Electrical Characteristics (Continued)
V_S = 8.0 V, f_RF = 98 MHz, f_OSC ≅ 108.7 MHz, f_IF = f_OSC - f_RF = 10.7 MHz
Reference point is ground (pins 2, 8, 14, 20, and 22),T_amb = 25°C, unless otherwise specified.
Parameters
Test Conditions
Pin
Symbol Min.
AGC Input Voltage Thresholds (AGC Threshold Current is 10 µA at Pin 10)
IF2 input
IF and detector
Mixer input level of
wideband sensor
f_iRF = 100 MHz
V at pin 13 = 0 V
I through pin 13 = 0 A
5
V_thIF2
85
9
V_thIFD
42
Between 15 and 16 V_thWB1
95
V_thWB2
85
Typ.
86
43
98
87
Max. Unit
92 dBµV
48 dBµV
100 dBµV
90 dBµV
Figure 24. Test Circuit
V_O IF
4.7n
4.7n
1
6
6
5
Gain IF 1
0 to 140 µA
50
5
2
2
1
V_I IF
I₄
R_L7 R_G5
4
20 7
5
2
50
1
5
V_I IF
50
50
5
1
V_O IF
6
4.7n
V_O IF ^VS
5
50
1
2
I_18,19
21
R_G21
18
2
R_L18,19
19
6
14
5
50
1
V_I RF
2
4.7n 15
R_{G15,16 16}
6
4.7n
IF 1
Mixer
AGC
block
Interference
3
I₃
2
6
IF 2
R_L3
V_S
10
I₁₀
V_S
13
I₁₃ R₁₃
AGC adjust
(wide band)
Voltage ⁶
regulator
V_S
I₆
17
1µ
f_OSC
C_OSC
mixer
V_REF = 4 V
8p R_G24
24
Local
Interference
R_G9
9
2
6
4.7n
47p
L_OSC
33p
23
oscillator
22
amplifier
1
11
12
8
5
1
50
V_I IF
R_LOBUFF
470p
R_G11
2
1
V_O IF
Z/Ω
1 ^{50 200} 2
V_LOBUFF
f_LOBUFF
6
R_L1
4.7n
5 ⁵⁰
RF Transformers MCL
Type TMO 4 - 1
IL = 0.7 dB
50
4
06
17
4807A–AUDR–05/04