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PDF ( 数据手册 , 数据表 ) TFA9843BJ

零件编号 TFA9843BJ
描述 2-channel audio amplifier
制造商 Philips
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TFA9843BJ 数据手册, 描述, 功能
TFA9843BJ
2-channel audio amplifier (SE: 1 W to 20 W)
Rev. 01 — 4 May 2004
Preliminary data sheet
1. General description
The TFA9843BJ contains two identical audio power amplifiers. The TFA9843BJ can be
used as two Single-Ended (SE) channels with a fixed gain of 26 dB.
The TFA9843BJ comes in a 9-pin DIL-bent-SIL (DBS9P) power package. The TFA9843BJ
is pin compatible with the TFA9841J, TFA9842J, TFA9842BJ and the TFA9843J.
The TFA9843BJ contains a unique protection circuit that is solely based on multiple
temperature measurements inside the chip. This gives maximum output power for all
supply voltages and load conditions with no unnecessary audio holes. Almost any supply
voltage and load impedance combination can be made as long as thermal boundary
conditions (number of channels used, external heatsink and ambient temperature)
allow it.
2. Features
s 1 W to 20 W operation possibility
s Soft clipping
s Standby and mute mode
s No on or off switching plops
s Low standby current
s High supply voltage ripple rejection
s Outputs short-circuit protected to ground, supply and across the load
s Thermally protected
s Pin compatible with the TFA9841J, TFA9842J, TFA9842BJ and the TFA9843J.
3. Applications
s Televisions
s Monitors
s PC speakers
s Boom boxes
s Mini and micro audio receivers.
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TFA9843BJ pdf, 数据表
Philips Semiconductors
TFA9843BJ
2-channel audio amplifier (2 × SE)
Vo 107
(µV)
106
001aaa417
105
104
103
102
10
1
0 4 8 12 16 20
VMODE (V)
Vi = 100 mV; VCC = 18 V.
Fig 4. AC output voltage as function of mode
selection voltage.
102
THD+N
(%)
10
001aaa419
1
101
102
101
1
10 102
Po (W)
VCC = 18 V; f = 1 kHz; RL = 4 .
Fig 6. Total harmonic distortion-plus-noise as
function of output power.
60
Po
(W)
40
001aaa418
20
RL = 1
23
4
8
0
8 12 16 20 24 28
VCC (V)
THD = 10 %.
Fig 5. Output power (one channel) as function of
supply voltage for various loads.
10
THD+N
(%)
1
001aaa420
101
102
10
102 103 104 105
f (Hz)
VCC = 18 V; Po = 1 W; RL = 4 .
Fig 7. Total harmonic distortion-plus-noise as
function of frequency.
9397 750 12846
Preliminary data sheet
Rev. 01 — 4 May 2004
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
8 of 17
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TFA9843BJ equivalent, schematic
Philips Semiconductors
TFA9843BJ
2-channel audio amplifier (2 × SE)
18. Data sheet status
Level Data sheet status [1] Product status [2] [3]
I Objective data
Development
II Preliminary data
Qualification
III Product data
Production
Definition
This data sheet contains data from the objective specification for product development. Philips
Semiconductors reserves the right to change the specification in any manner without notice.
This data sheet contains data from the preliminary specification. Supplementary data will be published
at a later date. Philips Semiconductors reserves the right to change the specification without notice, in
order to improve the design and supply the best possible product.
This data sheet contains data from the product specification. Philips Semiconductors reserves the
right to make changes at any time in order to improve the design, manufacturing and supply. Relevant
changes will be communicated via a Customer Product/Process Change Notification (CPCN).
[1] Please consult the most recently issued data sheet before initiating or completing a design.
[2] The product status of the device(s) described in this data sheet may have changed since this data sheet was published. The latest information is available on the Internet at
URL http://www.semiconductors.philips.com.
[3] For data sheets describing multiple type numbers, the highest-level product status determines the data sheet status.
19. Definitions
20. Disclaimers
Short-form specification — The data in a short-form specification is
extracted from a full data sheet with the same type number and title. For
detailed information see the relevant data sheet or data handbook.
Limiting values definition — Limiting values given are in accordance with
the Absolute Maximum Rating System (IEC 60134). Stress above one or
more of the limiting values may cause permanent damage to the device.
These are stress ratings only and operation of the device at these or at any
other conditions above those given in the Characteristics sections of the
specification is not implied. Exposure to limiting values for extended periods
may affect device reliability.
Application information — Applications that are described herein for any
of these products are for illustrative purposes only. Philips Semiconductors
make no representation or warranty that such applications will be suitable for
the specified use without further testing or modification.
21. Contact information
Life support — These products are not designed for use in life support
appliances, devices, or systems where malfunction of these products can
reasonably be expected to result in personal injury. Philips Semiconductors
customers using or selling these products for use in such applications do so
at their own risk and agree to fully indemnify Philips Semiconductors for any
damages resulting from such application.
Right to make changes — Philips Semiconductors reserves the right to
make changes in the products - including circuits, standard cells, and/or
software - described or contained herein in order to improve design and/or
performance. When the product is in full production (status ‘Production’),
relevant changes will be communicated via a Customer Product/Process
Change Notification (CPCN). Philips Semiconductors assumes no
responsibility or liability for the use of any of these products, conveys no
license or title under any patent, copyright, or mask work right to these
products, and makes no representations or warranties that these products are
free from patent, copyright, or mask work right infringement, unless otherwise
specified.
For additional information, please visit: http://www.semiconductors.philips.com
For sales office addresses, send an email to: [email protected]
9397 750 12846
Preliminary data sheet
Rev. 01 — 4 May 2004
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
16 of 17
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