TEA0679 NXP Semiconductors, TEA0679 Datasheet - Page 7

• Manufacturer Part Number: TEA0679
• Description: I2c-bus Controlled dual Dolby* B-type Noise Reduction Circuit for Playback Applications
• Manufacturer: NXP Semiconductors

Philips Semiconductors
CHARACTERISTICS
V
(TP) pin OUTA or OUTB; see Fig.1; NR on/AMS off; EQ switch in the 70 s position; unless otherwise specified.
1998 Nov 12
V
I
THD
H
PSRR
V
R
G
V
I
R
R
G
V
S
------------- -
CC
i(bias)
CC
SYMBOL
CC
m
o
cs
ct
i(offset)(DC)
ref
R
L
EQ
i
I
reduction circuit for playback applications
v
v(ol)
N
+
2
= 10 V; f = 20 Hz to 20 kHz; T
C-bus controlled dual Dolby* B-type noise
N
V
OUT
supply voltage
supply current
channel matching
total harmonic distortion
(2nd and 3rd harmonic)
headroom at output
signal plus noise-to-noise ratio
power supply ripple rejection
output voltage frequency
response; referenced to TP
channel separation
crosstalk between active and
inactive input
load resistance at output
voltage gain of preamplifier
DC input offset voltage
input bias current
internal equalization resistor
input resistance of head inputs
open-loop gain
DC output offset voltage at
pins OUTA and OUTB after
adjustment
PARAMETER
amb
= 25 C; all levels are referenced to V
f = 1 kHz; V
f = 10 kHz; V
f = 1 kHz
internal gain 40 dB, linear;
CCIR/ARM weighted;
decode mode; see Fig.41
V
see Fig.38
encode mode; see Fig.41
see Fig.39
f = 1 kHz; V
see Fig.39
V
pin INB1/INB2 to pin EQFB;
f = 1 kHz
A/B output
pin INB1 or INB2 to pin EQB;
additional gain = 0 dB
NR off; pins INA1, INA2, INB1
and INB2 connected to V
f = 1 kHz; V
V
V
AC-coupled; f = 1 kHz;
pin INA1/INA2 to pin EQFA;
pin EQA/EQB to EQ amplifier
pin INA1 or INA2 to pin EQA;
CC
i(rms)
o
o
0 dB; f = 1 kHz
f = 10 kHz
f = 400 Hz
= 10 dB; f = 1 kHz;
= 12 dB; THD = 1%
25 dB; f = 0.2 kHz
25 dB; f = 1 kHz
25 dB; f = 5 kHz
35 dB; f = 10 kHz
= 7.6 V; THD = 1%;
= 0.25 V; f = 1 kHz;
CONDITIONS
7
o
o
o
o
= 0 dB; NR off
= 0 dB
= 10 dB; NR off;
= 10 dB
ref
o
= 387.5 mV (RMS) (0 dB) at test point
7.6
12
78
52
57
70
10
29
4.7
60
80
104
0.5
25.9
1.5
20.8
21.1
27.4
20
MIN.
10
35
0.08
0.15
84
57
0
63
77
30
2
0.1
5.8
100
86
110
24.4
19.3
19.6
25.9
TYP.
Product specification
TEA0679T
12
40
0.15
0.3
31
0.4
6.9
MAX.
0.5
22.9
1.5
17.8
18.1
24.4
20
V
mA
dB
%
%
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
k
dB
mV
k
k
dB
dB
mV
UNIT
A