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參數(shù)資料
| 型號： | SAA7284GP |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費家電 |
| 英文描述： | Terrestrial digital sound decoder for conventional intercarrier PLL-IF systems |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封裝： | 14 X 20 MM, 2.80 MM HEIGHT, PLASTIC, SOT-319-2, QFP-64 |
| 文件頁數(shù)： | 25/40頁 |
| 文件大小： | 182K |
| 代理商： | SAA7284GP |
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1996 Oct 24
25
Philips Semiconductors
Preliminary specification
Terrestrial digital sound decoder for
conventional intercarrier PLL-IF systems
SAA7284
S
YSTEM
BGH
Af
o
pass band cut-off attenuation
f
i
= 5850 MHz
+ 182 kHz
f
i
= 5.5 MHz
±
50 kHz
f
i
= 5.5 MHz
±
80 kHz
f
i
= 4.43 MHz
1.7
3.1
4.5
dB
FMr
50
dB
FMomr
FM rejection (overmodulated FM)
25
30
dB
CCr
colour-carrier rejection
66
73
dB
Baseband demodulator output
REMO
V
o
K
p
output voltage limits
carrier loop-phase detector gain
0.2
4
4
2
1.2
0.9
0
V
DD
0.5
+4
5
V
V/rad
V/rad
kHz
deg
kHz
system I
system B/G
f
p
Φ
offset
f
n
carrier loop pull-in frequency
carrier loop-phase detector offset
carrier loop bandwidth
(natural frequency)
phase shift = 45
°
Baseband remodulator filter feedback
REMVE
V
o
carrier loop filter virtual earth
voltage
defined by V
RCF
0.5V
DDF2
V
Fine frequency calibration current (on to REMVE node)
I
source
I
sink
I
LI
f
fstep
output source current
output sink current
3-state leakage current
fine frequency calibration step
0.25
0.8
15
15
0
2
+0.25
8
μ
A
μ
A
μ
A
kHz
Voltage controlled oscillator
VCONT
V
i
C
i
VCO (
MEASURED AT V
CLK
PIN
)
f
VCO
VCO frequency after DAC
calibration
VCO frequency after fine
frequency calibration
K
VCO
VCO slope
input signal voltage
input capacitance
0.5
V
DD
0.5
10
V
pF
f
SYS
= 6552 MHz
(system I) or
f
SYS
= 5.85 MHz
(system BGH)
f
SYS
75
f
SYS
+ 75
kHz
f
SYS
4
f
SYS
+ 4
kHz
system I
system B/G
139
191
50
186
255
+30
90
232
319
+50
kHz/V
kHz/V
kHz
deg
DAC
STEP
ItoQ
VCO calibrating DAC step size
in-phase to quadrature phase
accuracy
VCO phase jitter
j
note 4
8.1
ns
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
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