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參數(shù)資料
| 型號： | TDA8745H |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費家電 |
| 英文描述： | Satellite sound receiver with I2C-bus control |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP44 |
| 文件頁數(shù)： | 22/40頁 |
| 文件大?。?/td> | 261K |
| 代理商： | TDA8745H |
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1996 Mar 11
22
Philips Semiconductors
Preliminary specification
Satellite sound receiver with I
2
C-bus control
TDA8745
PLL FM demodulators
f
CCO
free-running frequency
PLL left; BB = 0
PLL right; BB = 0
PLL left; BB = 1
PLL right; BB = 1
BB = 0; note 7
BB = 1; note 7
NR = off; DEEM = flat;
BB = 0
NR = off; DEEM = flat;
BB = 1; note 8
NR = off; DEEM = flat;
BB = 1; note 8
10
5.50
10.6
10.6
6.9
6.9
5.6
11.5
8.50
MHz
MHz
MHz
MHz
MHz
MHz
dBV
f
CCO
lock range of PLLs
V
OL
; V
OR
PLL output voltage (pins 23 and 22)
7.3
dBV
V
OL
;
V
OR
spread of PLL output voltage over
lock range (pins 23 and 22)
±
1.5
dB
Noise reduction
low-pass filter 50 kHz response
with respect to 1 kHz
note 9
21
16
11
dB
V
o 23,22
output voltage (pins 23 and 22)
at 0 dB NR input level;
f
S1
=
f
S2
= 50 kHz;
DEEM = flat; note 10
at
20 dB NR input level;
f
S1
=
f
S2
= 5 kHz;
DEEM = flat
at 0 dB NR input level;
f
S1
=
f
S2
= 50 kHz;
DEEM = flat
at
20 dB NR input level;
f
S1
=
f
S2
= 5 kHz;
DEEM = flat
f = 0 kHz; all PLLs locked 14
1
+1
+3
dBV
29
26
23
dBV
15 kHz frequency response
with respect to 1 kHz
2
0
+2
dB
13
11.5
10
dB
V
offset(DC)
DC offset voltage on attack/recovery
capacitors (pins 38 and 26)
22
mV
De-emphasis
15 kHz frequency response
with respect to 1 kHz flat
NR = off; DEEM = flat
NR = off; DEEM = J17;
note 11
NR = off; DEEM = 50
μ
s
NR = off; DEEM = 75
μ
s
0.5
13.9
0.0
12.4
+0.5
10.9
dB
dB
15.2
18.6
100
13.7
17.1
125
12.2
15.6
150
dB
dB
R
o
output resistance (pins 34 and 30)
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V
V
37,27 (1 kHz)
---------------------------------
V
V
23,22 (1 kHz)
---------------------------------
V
V
23,22 (1 kHz)
---------------------------------
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