Philips TDA8559T 13.4 Input congurations

TDA8559_3 © Koninklijke Philips Electronics N.V. 2006. All rights reserved.

Product data sheets Rev. 03 — 15 May 2006 13 of 36

Philips Semiconductors TDA8559T

Low-voltage stereo headphone ampliﬁer

13.4 Input conﬁgurations

The IC can be applied in two ways, ‘input mode low’ and ‘input mode high’. This can be

selected by the input mode at pin 8:

1. Input mode low: pin 8 ﬂoating: The DC level of the input pins has to be between 0 V

and (VP−1.8 V). A DC path to ground is needed. The maximum output voltage is

approximately 2.1 V (RMS). Input conﬁgurations illustrated in Figure 3 and Figure 4

should be used.

2. Input mode high: pin 8 is connected to VP: This mode is intended for supply voltages

> 6 V. It can deliver a maximum output voltage of approximately 6 V (RMS) at

THD = 0.5 %. The DC voltage level of the input pins is (0.5VP+ 0.6 V). Coupling

capacitors are necessary. Input conﬁgurations illustrated in Figure 5 and Figure 6

should be used.

VP< 6 V. VP< 6 V.

Fig 3. Input conﬁguration; with input capacitor Fig 4. Input conﬁguration; without input capacitor

2.2 µF

VIN

mgd123

5 kΩINPUT

pins 2 and 5

pins 3 and 6

VIN

mgd124

INPUT

pins 2 and 5

pins 3 and 6

VP< 6 V. At VP< 6 V, combined negative inputs.

Fig 5. Input conﬁguration Fig 6. Input conﬁguration

220 nF

VIN

mgd125

220 nF INPUT

pins 2 and 5

pins 3 and 6

220

nF

100 nF

100 nF

VIN

VIN

mgd126

pin 2

pin 3

pin 6

pin 5

Fig 7. Soft mute

VP

7

mute

620 kΩ

47 kΩ

220 nF

mgl135

Contents

Main 1. General description 2. Features 3. Applications TDA8559T Rev. 03 15 May 2006 Product data sheets Low-voltage stereo headphone amplier 4. Quick reference data 5. Ordering information Product data sheets Rev. 03 15 May 2006 3 of 36 6. Block diagram Fig 1. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description Philips Semiconductors TDA8559T 8. Functional description 8.1 V/I converters 8.2 Output ampliers 8.3 Buffer 8.4 Dynamic quiescent controller 8.5 Stabilizer 8.6 Input logic 8.7 Reference 9. Internal circuitry Page Philips Semiconductors TDA8559T 10. Limiting values 11. Thermal characteristics 12. Characteristics = 25 In accordance with the Absolute Maximum Rating System (IEC 60134). V 13. Application information = 25 13.1 General V = 3 V; T 13.2 Heatsink design 13.3 Test conditions 13.4 Input congurations Fig 7. Soft mute Fig 5. Input conguration Fig 6. Input conguration Fig 3. Input conguration; with input capacitor Fig 4. Input conguration; without input capacitor VP< 6 V. VP< 6 V. Page Product data sheets Rev. 03 15 May 2006 15 of 36 13.12 Application 7: Line driver application Fig 8. Application 1; single-ended with loudspeaker capacitor 13.13 Application diagrams IN1 IN2 Fig 9. Application 2; single-ended to buffer (without loudspeaker capacitor) IN1 IN2 Fig 10. Application 3; improved single-ended to buffer (without loudspeaker capacitor) Fig 11. Application 4; BTL mono amplier VP = 1.9 V to 6 V. Fig 12. Application 5; line driver application Product data sheets Rev. 03 15 May 2006 20 of 36 VP = 6 V to 18 V. Fig 13. Application 6; line driver application VP = 6 V to 30 V. Fig 14. Application 7; line driver application 13.14 Printed-circuit board layout 13.15 Response curves for low input mode Top view component side. Fig 15. Printed-circuit board layout (1) High mode. (2) Low mode. Fig 18. THD as a function of Po (stereo headphone) Fig 19. THD as a function of frequency (stereo (1) VP = 12 V. (2) VP = 3 V and 6 V. (3) VP = 3 V, 6 V and 12 V. (1) VP = 3 V. (2) VP = 12 V. VP = 3 V, Vi = 20 mV. VP = 3 V, Vi = 20 mV. (stereo headphone) VP = 3 V, Rs = 0 , Vr = 0.2 V (RMS). (1) RL = 32 , THD = 10 %. (2) RL = 32 , THD = 0.5 %. (1) RL = 25 . (2) RL = 32 . f = 1 kHz. (1) VP = 3 V, RL = 25 . (2) VP = 5 V, RL = 25 . Fig 26. Total worst case power dissipation as a function of supply voltage (SE) (stereo Fig 27. THD as a function of Po (BTL mono) Fig 28. THD as a function of frequency (BTL mono) Fig 29. SVRR as a function of frequency (BTL mono) (1) VP = 3 V, RL = 25 , THD = 70 mW. (2) VP = 5 V, RL = 25 , THD = 150 mW. VP = 3 V, Rs = 0 , Vr = 0.2 V (RMS). 13.16 Response curves for high input mode (1) THD = 10 %, RL = 25 . (2) THD = 0.5 %, RL = 25 . (1) RL = 25 . (2) RL = 32 (1) RL = 32 , THD = 10 %. (2) RL = 32 , THD = 0.5 %. (1) RL = 25 . (2) RL = 32 . Fig 34. THD as a function of Po (stereo headphone) Fig 35. THD as a function of frequency (stereo VP = 10 V, Vi = 20 mV. VP = 10 V, Rs = 0 , Vr = 0.2 V (RMS). SVRR (dB) (1) VP = 12 V, RL = 1 k. (2) VP = 18 V, RL = 1 k. VP = 12 V, Vo = 1 V. driver) 14. Test information 14.1 Quality information is applicable. General Quality Specication for Integrated Circuits, SNW-FQ-611 The 15. Package outline SO16: plastic small outline package; 16 leads; body width 3.9 mm SOT109-1 Fig 43. Package outline SOT109-1 (SO16) 16. Soldering 16.1 Introduction to soldering surface mount packages 16.2 Reow soldering 16.3 Wave soldering 16.4 Manual soldering Page 17. Revision history 18. Legal information 18.1 Data sheet status 18.2 Denitions 18.3 Disclaimers 18.4 Trademarks 20. Contents