TEA0679T Ver la hoja de datos (PDF) - Philips Electronics
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Fabricante
TEA0679T
Philips Electronics
TEA0679T Datasheet PDF : 40 Pages
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Philips Semiconductors
I2C-bus controlled dual Dolby* B-type noise
reduction circuit for playback applications
Product specification
TEA0679T
CHARACTERISTICS
VCC = 10 V; f = 20 Hz to 20 kHz; Tamb = 25 °C; all levels are referenced to Vo = 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
VCC
ICC
αm
THD
supply voltage
supply current
channel matching
total harmonic distortion
(2nd and 3rd harmonic)
HR
headroom at output
S------N+-----N---
signal plus noise-to-noise ratio
PSRR
power supply ripple rejection
Vo
output voltage frequency
response; referenced to TP
αcs
channel separation
αct
crosstalk between active and
inactive input
RL
load resistance at output
Gv
voltage gain of preamplifier
Vi(offset)(DC)
Ii(bias)
REQ
DC input offset voltage
input bias current
internal equalization resistor
Ri
Gv(ol)
input resistance of head inputs
open-loop gain
Vref − VOUT DC output offset voltage at
pins OUTA and OUTB after
adjustment
CONDITIONS
MIN.
7.6
−
f = 1 kHz; Vo = 0 dB; NR off
f = 1 kHz; Vo = 0 dB
f = 10 kHz; Vo = 10 dB
VCC = 7.6 V; THD = 1%;
f = 1 kHz
−0.5
−
−
12
internal gain 40 dB, linear;
78
CCIR/ARM weighted;
decode mode; see Fig.41
Vi(rms) = 0.25 V; f = 1 kHz;
52
see Fig.38
encode mode; see Fig.41
−25 dB; f = 0.2 kHz
−25.9
0 dB; f = 1 kHz
−25 dB; f = 1 kHz
−1.5
−20.8
−25 dB; f = 5 kHz
−21.1
−35 dB; f = 10 kHz
−27.4
Vo = 10 dB; f = 1 kHz;
57
see Fig.39
f = 1 kHz; Vo = 10 dB; NR off; 70
see Fig.39
AC-coupled; f = 1 kHz;
10
Vo = 12 dB; THD = 1%
pin INA1/INA2 to pin EQFA; 29
pin INB1/INB2 to pin EQFB;
f = 1 kHz
−
−
pin EQA/EQB to EQ amplifier 4.7
A/B output
60
pin INA1 or INA2 to pin EQA;
pin INB1 or INB2 to pin EQB;
additional gain = 0 dB
f = 10 kHz
80
f = 400 Hz
104
NR off; pins INA1, INA2, INB1 −20
and INB2 connected to Vref
TYP.
10
35
−
0.08
0.15
−
84
57
−24.4
0
−19.3
−19.6
−25.9
63
77
−
30
2
0.1
5.8
100
86
110
−
MAX.
12
40
+0.5
0.15
0.3
−
−
−
−22.9
+1.5
−17.8
−18.1
−24.4
−
−
−
31
−
0.4
6.9
−
−
−
+20
UNIT
V
mA
dB
%
%
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
kΩ
dB
mV
µA
kΩ
kΩ
dB
dB
mV
1998 Nov 12
7
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