AN8946SB Datasheet, PDF (3/10 Pages) Panasonic Semiconductor – FM demodulation IC for BS/CS broadcasting

ICs for TV
AN8946SB
s Electrical Characteristics at T_a = 25°C
Parameter
Symbol
Conditions
Min Typ Max Unit
Total circuit current
IF amp. maximum gain
IF amp. minimum gain
Loop amp. gain
Video amp. gain
VCO control sensitivity
I_TOT
GIF_max
GIF_min
G_LA
G_VA
β
V_CC = 5 V
PIF_IN = −60 dBm, f = 402.78 MHz
V₁₇ = 5 V
PIF_IN = 0 dBm, f = 402.78 MHz
V₁₇ = 0 V
PLA in = −30 dBm, f = 1 MHz
PVA in = −10 dBm, f = 1 MHz
f = 402.78 MHz
28 34 40 mA
22 25 28 dB
 −29 −25 dB
22 24 26 dB
6.5 7.0 7.5 dB
37 39 41 MHz/V
Signal to noise ratio
(C/N = ∞)
S/N_max PIF_IN = −30 dBm, 100%W, weighting 62 67  dB
LPF 4.2 MHz, HPF 10 kHz
Inter-modulation interference
ratio (2nd)
Inter-modulation interference
ratio (3rd)
IM₂ PIF_IN = −30 dBm, f_C = 3.58 MHz
f_S = 5.7272 MHz
IM₃ PIF_IN = −30 dBm, f_C = 3.58 MHz
f_S = 5.7272 MHz
40 60  dB
40 60  dB
AFC dead-band width
BW_AFC
AFC output maximum voltage V_AFCH
AFC output minimum voltage V_AFCL
AGC output maximum voltage 1 V_AGC1H
AGC output minimum voltage 1 V_AGC1L
AGC output maximum voltage 2 V_AGC2H
AGC output minimum voltage 2 V_AGC2L
AGC SW level
Pin_SW
Key pulse input maximum voltage
Key pulse input minimum voltage
Noise amplitude
V_KEYH
V_KEYL
V_N
Pin 2: Low, Pin 3: High
V_CC − V₃ value, f = 402.78 MHz
V₂ value, f = 402.78 MHz
V_CC − V₁₇ value, PIF_IN = −70 dBm
PIF_IN = +10 dBm
V_CC − V₁₆ value, PIF_IN = −70 dBm
PIF_IN = +10 dBm
f = 402.78 MHz, PIF_M = −50 dBm
Input level at V₁₆ = 2.5 V
DC measurement
DC measurement
f = 402.78 MHz with no modulation
and with de-emphasis
Measure it at Video out pin.
310 360 420 kHz
 0 0.5 V
 0.1 0.5 V
 0 0.2 V
 0.3 0.5 V
 0 0.2 V
 0.3 0.5 V
−39 −35 −31 dBm
0.35 

4
V
0.1 V
10 mV[p-p]
Pin 12 voltage
V₁₂ Voltage to get V₁₇ = 0 V, V₂ ≤ 1 V,
V₃ ≥ 4 V with no PIF_IN .
1.0 1.35 1.7 V
Pin 15 voltage
V₁₅ Voltage to be AFC center with no PIF_IN , 1.03 1.15 1.27 V
V₁₇ = 0 V, f_VCO = 402.78 MHz
• Design reference data
Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.
Parameter
Symbol
Conditions
Min Typ
IF amp. frequency characteristic
IF amp. NF
Loop amp. frequency characteristic
Loop amp. phase
f_CIF
NF_IF
f_CLA
PH_LA
3 dB down frequency
f = 402.78 MHz, V₁₇ = 5 V
3 dB down frequency
f = 1 MHz to 20 MHz
600 700
 12
200 250
 ±5
Max

15

±10
Unit
MHz
dB
MHz
°
3