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TDA8920BTH 데이터시트(PDF) 11 Page - NXP Semiconductors

부품명 TDA8920BTH
상세설명  2 X 100 W class-D power amplifier
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제조업체  PHILIPS [NXP Semiconductors]
홈페이지  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

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9397 750 13356
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Preliminary data sheet
Rev. 01 — 1 October 2004
11 of 34
Philips Semiconductors
TDA8920B
2
× 100 W class-D power amplifier
[2]
Only complete shut-down of amplifier if short-circuit impedance is below threshold of 1
Ω. In all other cases
current limiting: resulting in clipping output signal.
[3]
Fault condition detected during (every) transition between standby-to-mute and during restart after
activation of OCP (short to one of the supply lines).
8.4 Differential audio inputs
For a high common mode rejection ratio and a maximum of flexibility in the application, the
audio inputs are fully differential. By connecting the inputs anti-parallel the phase of one of
the channels can be inverted, so that a load can be connected between the two output
filters. In this case the system operates as a mono BTL amplifier and with the same
loudspeaker impedance an approximately four times higher output power can be
obtained.
The input configuration for a mono BTL application is illustrated in Figure 6.
In the stereo single-ended configuration it is also recommended to connect the two
differential inputs in anti-phase. This has advantages for the current handling of the power
supply at low signal frequencies.
9.
Limiting values
[1]
Current limiting concept. See also Section 13.6.
Fig 6.
Input configuration for mono BTL application.
Vin
IN1P
OUT1
power stage
mbl466
OUT2
SGND
IN1M
IN2P
IN2M
Table 5:
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol
Parameter
Conditions
Min
Max
Unit
VP
supply voltage
-
±30
V
IORM
repetitive peak current in
output pin
maximum output
current limiting
[1] 8-
A
Tstg
storage temperature
−55
+150
°C
Tamb
ambient temperature
−40
+85
°C
Tj
junction temperature
-
150
°C


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