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TEA1099H 데이터시트(PDF) 8 Page - NXP Semiconductors

부품명 TEA1099H
상세설명  Speech and handsfree IC with auxiliary inputs/outputs and analog multiplexer
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제조업체  PHILIPS [NXP Semiconductors]
홈페이지  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

TEA1099H 데이터시트(HTML) 8 Page - NXP Semiconductors

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1999 Apr 08
8
Philips Semiconductors
Product specification
Speech and handsfree IC with auxiliary
inputs/outputs and analog multiplexer
TEA1099H
Fig.4 Main DC voltages.
handbook, full pagewidth
0.07
0.06
8
6
2
0
0
0.01
voltages
(V)
0.02
0.05
MICS
VDD
VBB
SLPE
LN
Iline (A)
0.04
0.03
4
FCA049
EXTERNAL SUPPLY (PINS ESI AND VBB)
The TEA1099H can be supplied by the line as well as by
external power sources (voltage or current sources) that
must be connected to pin ESI.
The IC will choose which supply to use according to the
voltage it can provide. A voltage supply on ESI is efficient
only if its value is greater than the working voltage of the
internal VBB voltage stabilizer. Otherwise the IC continues
to be line powered. The current consumed on this source
is at least equal to the internal consumption. It increases
with the voltage difference between the value forced on
ESI and the working voltage of the internal stabilizer.
The excess current compared to the internal consumption
becomes then available for other purposes such as
supplying a loudspeaker amplifier. The voltage source
should not exceed 6 V. If the value of the external voltage
source can be lower than the working voltage of the
internal stabilizer, an external diode is required to avoid
reverse current flowing into the external power supply.
In case of current source, the voltage on VBB and ESI
depends on the current available. It is internally limited to
6.6 V. The current source should not exceed 140 mA.
VDD SUPPLY FOR MICROCONTROLLER (PIN VDD)
The voltage on VDD supply point follows the voltage on VBB
with a difference typically equal to 250 mV and is internally
limited to 3.35 V. This voltage is temperature
compensated. This supply point can provide a current up
to 3 mA typically. Its internal consumption stays low (a few
10 nA) as long as VDD does not exceed 1.5 V (see Fig.5).
An external voltage can be connected on VDD with limited
extra consumption on VDD (typically 100 µA). This voltage
source should not be lower than 3.5 V or higher than 6 V.
VBB and VDD can supply external circuits in the limit of
currents provided either from the line or from ESI, taking
into account the internal current consumption.


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