TFA9842AJ/N1,112 NXP Semiconductors, TFA9842AJ/N1,112 Datasheet
TFA9842AJ/N1,112
Specifications of TFA9842AJ/N1,112
TFA9842AJ/N1
TFA9842AJ/N1
Available stocks
Related parts for TFA9842AJ/N1,112
TFA9842AJ/N1,112 Summary of contents
Page 1
TFA9842AJ 7.5 W stereo power amplifier with volume control Rev. 01 — 28 April 2006 1. General description The TFA9842AJ contains two identical audio power amplifiers. The TFA9842AJ can be used as two Single-Ended (SE) channels with a volume control. ...
Page 2
Philips Semiconductors 4. Quick reference data Table 1. Symbol CC(stb THD G v(max SVRR [1] A minimum load of 3 [2] Supply voltage ripple rejection is measured at the output, with ...
Page 3
Philips Semiconductors 6. Block diagram Fig 1. Block diagram 7. Pinning information 7.1 Pinning Fig 2. Pin configuration TFA9842AJ_1 Preliminary specification 7.5 W stereo power amplifier with volume control IN1 IN2 60 k ...
Page 4
Philips Semiconductors 7.2 Pin description Table 3. Symbol IN2 OUT2 CIV IN1 GND SVR VC OUT1 Functional description 8.1 Input configuration The input cut-off frequency is 3dB – Single-ended application 3dB – ...
Page 5
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 and P CC Listening Level (ALL) ...
Page 6
Philips Semiconductors 8.5 Built-in protection circuits The TFA9842AJ contains two types of temperature sensors; one measures the local temperatures of the power stages and one measures the global chip temperature local temperature of the power stage of approximately ...
Page 7
Philips Semiconductors 11. Static characteristics Table unless otherwise specified. Symbol stb I(VC) I I(VC) [1] A minimum load of 3 [2] The DC output voltage ...
Page 8
Philips Semiconductors [2] Supply voltage ripple rejection is measured at the output, with a source impedance Z and with a frequency range from kHz (unweighted). The ripple voltage is a sine wave with a frequency f ...
Page 9
Philips Semiconductors ( THD = kHz L Fig 7. Output power as a function of supply voltage 0 cs ...
Page 10
Philips Semiconductors 13. Application information 13.1 Application diagrams 13.1.1 Single-ended Application CONTROLLER 22 F Fig 11. SE application diagram Remark: Switching inductive loads, the output voltage can rise beyond the maximum supply voltage ...
Page 11
Philips Semiconductors 13.1.2 Volume control drive options Fig 12. Volume control drive circuit with 3.3 V PWM PWM Fig 13. Volume control drive circuit with 5 V 13.2 Printed-circuit board 13.2.1 Layout and grounding To obtain a high-level system performance, ...
Page 12
Philips Semiconductors Fig 15. 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 13
Philips Semiconductors R th(tot and R CC 8.4 W; see dissipation, is: 150 th(tot) R th(tot) R th(h-a) This calculation is for an application at worst-case (stereo) sine-wave output signals. In practice ...
Page 14
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 ...
Page 15
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 16
Philips Semiconductors 17. Revision history Table 11. Revision history Document ID Release date TFA9842AJ_1 20060428 TFA9842AJ_1 Preliminary specification 7.5 W stereo power amplifier with volume control Data sheet status Change notice Preliminary data sheet - Rev. 01 — 28 April ...
Page 17
Philips Semiconductors 18. Legal information 18.1 Data sheet status [1][2] Document status Product status Objective [short] data sheet Development Preliminary [short] data sheet Qualification Product [short] data sheet Production [1] Please consult the most recently issued document before initiating or ...
Page 18
Philips Semiconductors 20. Contents 1 General description . . . . . . . . . . . . . . . . . . . . . . 1 2 Features . . . . . . . . ...