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TEA0675T Datasheet(PDF) 6 Page - NXP Semiconductors

No. de pieza TEA0675T
Descripción Electrónicos  Dual Dolby* B-type noise reduction circuit for playback applications
Download  32 Pages
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Fabricante Electrónico  PHILIPS [NXP Semiconductors]
Página de inicio  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

TEA0675T Datasheet(HTML) 6 Page - NXP Semiconductors

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1996 Jun 07
6
Philips Semiconductors
Preliminary specification
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
µs position; unless otherwise specified.
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-amplifier
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
µA
REQ
equalization resistor
4.7
5.8
6.9
k
Ri
input resistance head
inputs
60
100
k
Av
open-loop amplification
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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