TDA9855 Ver la hoja de datos (PDF) - Philips Electronics
Número de pieza
componentes Descripción
Fabricante
TDA9855 Datasheet PDF : 52 Pages
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Philips Semiconductors
I2C-bus controlled BTSC stereo/SAP
decoder and audio processor
Product specification
TDA9855
CHARACTERISTICS
All voltages are measured relative to GND; VCC = 8.5 V; source resistance Rs ≤ 600 Ω; output load RL ≥ 10 kΩ;
CL ≤ 2.5 nF; AC-coupled; fi = 1 kHz; Tamb = 25 °C; volume gain control Gc = 0 dB; bass linear; treble linear;
loudness off; AVL off; effects linear; composite input signal in accordance with BTSC standard; see Fig.1;
unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX. UNIT
General
VCC
ICC
VDC
supply voltage
supply current
DC voltage at signal handling
pins
8.0
8.5
9.0
V
50
75
95
mA
−
1⁄2VCC
−
V
Decoder section
INPUT LEVEL ADJUSTMENT CONTROL
GLA
input level adjustment control maximum gain
−
maximum attenuation
−
Gstep
step resolution
−
Vi(rms)
maximum input voltage level
2
(RMS value)
Zi
input impedance
29.5
STEREO DECODER
MPXL+R(rms) input voltage level for 100%
modulation L + R; 25 kHz
deviation (RMS value)
input level adjusted via I2C-bus −
(L + R; fi = 300 Hz);
monitoring line out
MPXL−R
input voltage level for 100%
−
modulation L − R; 50 kHz
deviation (peak value)
MPX(max)
maximum headroom for L + R, fmod < 15 kHz; THD < 15% for 9
L, R
75 µs equivalent input
modulation
MPXpilot(rms) nominal stereo pilot voltage
−
level (RMS value)
STon(rms) pilot threshold voltage stereo data STS = 1
−
on (RMS value)
data STS = 0
−
SToff(rms) pilot threshold voltage stereo data STS = 1
15
off (RMS value)
data STS = 0
10
hys
OUTL+R
hysteresis
−
output voltage level for 100% input level adjusted via I2C-bus 480
modulation L + R at LINE OUT (L + R; fi = 300 Hz);
monitoring LINE OUT
4.0
−3.5
0.5
−
35
250
707
−
50
−
−
−
−
2.5
500
−
dB
−
dB
−
dB
−
V
40.5
kΩ
−
mV
−
mV
−
dB
−
mV
35
mV
30
mV
−
mV
−
mV
−
dB
520
mV
1997 Nov 04
14
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