TFA9842BJ/N1,112 NXP Semiconductors, TFA9842BJ/N1,112 Datasheet

IC AMP AUDIO PWR 7.5W STER 9SIL

TFA9842BJ/N1,112

Manufacturer Part Number
TFA9842BJ/N1,112
Description
IC AMP AUDIO PWR 7.5W STER 9SIL
Manufacturer
NXP Semiconductors
Type
Class ABr
Datasheet

Specifications of TFA9842BJ/N1,112

Package / Case
9-SIL (Bent and Staggered Leads)
Output Type
2-Channel (Stereo)
Max Output Power X Channels @ Load
7.5W x 2 @ 4 Ohm
Voltage - Supply
9 V ~ 26 V
Features
Depop, Mute, Short-Circuit and Thermal Protection, Standby
Mounting Type
Through Hole
Product
Class-AB
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
568-3452-5
935275785112
TFA9842BJ
1. General description
2. Features
3. Applications
The TFA9842BJ contains two identical audio power amplifiers. The TFA9842BJ can be
used as two Single-Ended (SE) channels with a fixed gain of 26 dB.
The TFA9842BJ comes in a 9-pin DIL-bent-SIL (DBS9P) power package. The TFA9842BJ
is pin compatible with the TFA9841J, TFA9842J, TFA9843J and the TFA9843BJ.
The TFA9842BJ 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.
TFA9842BJ
2-channel audio amplifier (SE: 1 W to 7.5 W)
Rev. 01 — 1 March 2004
1 W to 7.5 W operation possibility
Soft clipping
Standby and mute mode
No on or off switching plops
Low standby current
High supply voltage ripple rejection
Outputs short-circuit protected to ground, supply and across the load
Thermally protected
Pin compatible with the TFA9841J, TFA9842J, TFA9843J and the TFA9843BJ.
Televisions
Monitors
PC speakers
Boom boxes
Mini and micro audio receivers.
Preliminary data sheet

Related parts for TFA9842BJ/N1,112

TFA9842BJ/N1,112 Summary of contents

Page 1

TFA9842BJ 2-channel audio amplifier (SE 7.5 W) Rev. 01 — 1 March 2004 1. General description The TFA9842BJ contains two identical audio power amplifiers. The TFA9842BJ can be used as two Single-Ended (SE) channels with a fixed ...

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Philips Semiconductors 4. Quick reference data Table 1: Symbol stb P o THD G v SVRR 5. Ordering information Table 2: Type number TFA9842BJ 9397 750 12847 Preliminary data sheet Quick reference data Parameter Conditions ...

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Philips Semiconductors 6. Block diagram Fig 1. Block diagram. 7. Pinning information 7.1 Pinning Fig 2. Pin configuration. 9397 750 12847 Preliminary data sheet IN1 IN2 CIV V REF STANDBY ...

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Philips Semiconductors 7.2 Pin description Table 3: Symbol IN2 OUT2 CIV IN1 GND SVR MODE OUT1 Functional description 8.1 Input configuration The input cut-off frequency is cut off – Application cut off ...

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Philips Semiconductors 8.2.2 Headroom Typical CD music requires at least 12 dB (factor 15.85) dynamic headroom, compared to the average power output, for transferring the loudest parts without distortion Level (ALL) music power ...

Page 6

Philips Semiconductors 8.4 Supply voltage ripple rejection The Supply Voltage Ripple Rejection (SVRR) is measured with an electrolytic capacitor of 150 F on pin SVR using a bandwidth kHz. as function of the frequency. A ...

Page 7

Philips Semiconductors 11. Static characteristics Table unless otherwise specified. Symbol stb MODE I MODE [1] A minimum load of 3 [2] With a load connected ...

Page 8

Philips Semiconductors [2] SVRR is measured at the output, with a source impedance R range from kHz (unweighted). The ripple voltage is a sine wave with a frequency f amplitude of 300 mV (RMS), which is ...

Page 9

Philips Semiconductors ( THD = kHz. L Fig 8. Output power as function of supply voltage (dB) 20 ...

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Philips Semiconductors 13. Application information 13.1 Application diagram 100 270 7.5 V BC547 2.2 F micro- BC547 controller 1.5 k Fig 12. Application diagram. Remark: Switching inductive loads, the output voltage can rise ...

Page 11

Philips Semiconductors Fig 13. Printed-circuit board layout (single-sided); components view. 13.2.2 Power supply decoupling Proper supply bypassing is critical for low-noise performance and high supply voltage ripple rejection. The respective capacitor location should be as close as possible to the ...

Page 12

Philips Semiconductors R is the total thermal resistance between the junction and the ambient including the th(tot) heatsink. This can be calculated using the maximum temperature increase divided by the power dissipation: R th(tot and ...

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Philips Semiconductors 15. Package outline DBS9P: plastic DIL-bent-SIL power package; 9 leads (lead length 12/11 mm); exposed die pad DIMENSIONS (mm are the original dimensions) (2) (1) (2) UNIT ...

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Philips Semiconductors 16. Soldering 16.1 Introduction to soldering through-hole mount packages This text gives a brief insight to wave, dip and manual soldering. A more in-depth account of soldering ICs can be found in our Data Handbook IC26; Integrated Circuit ...

Page 15

Philips Semiconductors 17. Revision history Table 11: Revision history Document ID Release date TFA9842BJ 20040301 9397 750 12847 Preliminary data sheet Data sheet status Change notice Preliminary data Rev. 01 — 1 March 2004 TFA9842BJ 2-channel auto amplifier (2 Order ...

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Philips Semiconductors 18. Data sheet status [1] Level Data sheet status Product status I Objective data Development II Preliminary data Qualification III Product data Production [1] Please consult the most recently issued data sheet before initiating or completing a design. ...

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Philips Semiconductors 22. Contents 1 General description . . . . . . . . . . . . . . . . . . . . . . 1 2 Features . . . . . . . . ...

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