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TEA6321T датащи(PDF) 10 Page - NXP Semiconductors

номер детали TEA6321T
подробное описание детали  Sound fader control circuit
Download  36 Pages
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производитель  PHILIPS [NXP Semiconductors]
домашняя страница  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

TEA6321T датащи(HTML) 10 Page - NXP Semiconductors

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1995 Dec 19
10
Philips Semiconductors
Preliminary specification
Sound fader control circuit
TEA6321
Notes to the characteristics
1. The indicated values for output power assume a 6 W power amplifier at 4
Ω with 20 dB gain and a fixed attenuator
of 12 dB in front of it. Signal-to-noise ratios exclude noise contribution of the power amplifier.
2. The transmission contains: total initialization with MAD and subaddress for volume and 8 data words, see also
definition of characteristics, clock frequency = 50 kHz, repetition burst rate = 400 Hz, maximum bus signal
amplitude = 5 V (p-p).
3. The AC characteristics are in accordance with the I2C-bus specification. This specification,
“The I2C-bus and how to
use it”, can be ordered using the code 9398 393 40011.
Mute function (see Fig.10)
HARDWARE MUTE
Vsw
mute switch level (2
× VBE)
1.45
V
mute active
VswLOW
input level
−−
1.0
V
Ii
input current
VswLOW =1V
−300
−−µA
mute passive: level internally defined
VswHIGH
saturation voltage
−−
VCC
V
td(mute)
delay until mute passive
−−
0.5
ms
ZERO CROSSING MUTE
Id
discharge current
0.3
0.6
1.2
µA
Ich
charge current
−300
−150
−µA
VswDEL
delay switch level (3
× VBE)
2.2
V
td
delay time
Cm =10nF
100
ms
Vwind
window for audio signal zero
crossing detection
30
40
mV
Muting at power supply drop
VCCdrop
supply drop for mute active
V19
0.7
V
Power-on reset (when reset is active the GMU-bit (general mute) is set and the I2C-bus receiver is in reset
position)
VCC
increasing supply voltage start of
reset
−−
2.5
V
end of reset
5.2
6.5
7.2
V
decreasing supply voltage start of
reset
4.2
5.5
6.2
V
Digital part (I2C-bus pins); note 3
ViH
HIGH level input voltage
3
9.5
V
ViL
LOW level input voltage
−0.3
+1.5
V
IiH
HIGH level input current
−10
+10
µA
IiL
LOW level input current
−10
+10
µA
VoL
LOW level output voltage
IL =3mA
−−
0.4
V
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT


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