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Philips TDA8559T 13.12 Application 7: Line driver application, 13.13 Application diagrams

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

Philips Semiconductors TDA8559T

Low-voltage stereo headphone ampliﬁer

13.12 Application 7: Line driver application

With the supply voltage connected to pin 15 it is possible to use the head ampliﬁer above

the maximum of 18 V to pin 16. The internal supply voltage will be reduced to a maximum

of approximately 17 V.

This will be convenient in applications where the supply voltage is higher than 18 V,

however an output voltage swing that reaches the higher supply voltage is not required.

the input conﬁgurations illustrated in Figure 5 and Figure 6 should be used. This

application can also be used for headphone applications. However, due to the limited

output current, series resistors have to be used between the output pins and the load; see

Figure 14.

13.13 Application diagrams

Fig 8. Application 1; single-ended with loudspeaker capacitor

+

−

+

−

+

−

+

−

OA

INPUT

LOGIC

V/I

REFERENCE

V/I

1

STANDBY

MUTE

MODE

SVRR

GND

2

3

5

6

412

Cb

BUFFER

OUT2

OUT1

IN1

IN2

mgd116

11

14

1615

13

7

8

VP

VP

VP1

VP2

BUFFER

OA

50 kΩ

100 kΩ

100

kΩ

50 kΩ

50 kΩ

50 kΩ

50

kΩ

50

kΩ

TDA8559T

DQC

100 µF

220 µF

220 µF

100

nF

+VP

32 Ω

32 Ω

+−

+−

22 µFCr

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