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參數(shù)資料
| 型號(hào)： | TEA0675T-T |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 噪聲抑制 |
| 英文描述： | B Type, DOLBY NOISE REDUCTION IC, PDSO24 |
| 封裝： | 7.50 MM, PLASTIC, MS-013AD, SOT-137-1, SOP-24 |
| 文件頁(yè)數(shù)： | 29/32頁(yè) |
| 文件大?。?/td> | 225K |
| 代理商： | TEA0675T-T |
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1996 Jun 07
6
Philips Semiconductors
Preliminary specication
Dual Dolby* B-type noise reduction circuit
for playback applications
TEA0675
CHARACTERISTICS
VCC = 10 V; f = 20 Hz to 20 kHz; Tamb =25 °C; all levels are referenced to 387.5 mV (RMS) (0 dB) at test point (TP)
pin OUTA or OUTB; see Fig.1; NR on/AMS off; EQ switch in the 70
s position; unless otherwise specied.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
VCC
supply voltage
7.6
10
12
V
ICC
supply current
26
31
mA
αm
channel matching
f = 1 kHz; Vo = 0 dB; NR off 0.5
+0.5
dB
THD
total harmonic distortion
(2nd and 3rd harmonic)
f = 1 kHz; Vo =0dB
0.08
0.15
%
f = 10 kHz; Vo =10dB
0.15
0.3
%
HR
headroom at output
VCC = 7.6 V; THD = 1%;
f = 1 kHz
12
dB
signal plus noise-to-noise
ratio
internal gain 40 dB, linear;
CCIR/ARM weighted;
decode mode; see Fig.25
78
84
dB
PSRR
power supply ripple
rejection
Vi(rms) = 0.25 V; f = 1 kHz;
see Fig.22
52
57
dB
fo
frequency response;
referenced to TP
encode mode; see Fig.25
Vo = 25 dB; f = 0.2 kHz
22.9
24.4
25.9
dB
Vo = 0 dB; f = 1 kHz
1.5
0
+1.5
dB
Vo = 25 dB; f=1kHz
17.8
19.3
20.8
dB
Vo = 25 dB; f=5kHz
18.1
19.6
21.1
dB
Vo = 35 dB; f = 10 kHz
24.4
25.9
27.4
dB
αcs
channel separation
Vo = 10 dB; f = 1 kHz;
see Fig.23
57
63
dB
αcc
crosstalk between active
and inactive input
f = 1 kHz; Vo = 10 dB;
NR off; see Fig.23
70
77
dB
RL
load resistance at output
AC-coupled; f = 1 kHz;
Vo = 12 dB; THD = 1%
10
k
Gv
voltage gain of
pre-amplier
from pin INA1 or INA2 to
pin EQFA and from
pin INB1 or
INB2 to pin EQFB;
f = 1 kHz
29
30
31
dB
VI(offset)(DC)
DC input offset voltage
2
mV
Ii(bias)
input bias current
0.1
0.4
A
REQ
equalization resistor
4.7
5.8
6.9
k
Ri
input resistance head
inputs
60
100
k
Av
open-loop amplication
pin INA1 or
INA2 to pin EQA and
pin INB1 or INB2 to
pin EQB
f = 10 kHz
80
86
dB
f = 400 Hz
104
110
dB
SN
+
N
--------------
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