TDA8922B NXP Semiconductors, TDA8922B Datasheet

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TDA8922B

Manufacturer Part Number
TDA8922B
Description
The TDA8922B is a high efficiency class-D audio power amplifier with very lowdissipation
Manufacturer
NXP Semiconductors
Datasheet

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1. General description
2. Features
3. Applications
The TDA8922B is a high efficiency class-D audio power amplifier with very low
dissipation. The typical output power is 2
The device is available in the HSOP24 power package and in the DBS23P through-hole
power package. The amplifier operates over a wide supply voltage range from 12.5 V
to 30 V and consumes a very low quiescent current.
TDA8922B
2
Rev. 01 — 1 October 2004
Zero dead time switching
Advanced current protection: output current limiting
Smooth start-up: no pop-noise due to DC offset
High efficiency
Operating supply voltage from 12.5 V to 30 V
Low quiescent current
Usable as a stereo Single-Ended (SE) amplifier or as a mono amplifier in Bridge-Tied
Load (BTL)
Fixed gain of 30 dB in Single-Ended (SE) and 36 dB in Bridge-Tied Load (BTL)
High supply voltage ripple rejection
Internal switching frequency can be overruled by an external clock
Full short-circuit proof across load and to supply lines
Thermally protected.
Television sets
Home-sound sets
Multimedia systems
All mains fed audio systems
Car audio (boosters).
50 W class-D power amplifier
50 W.
Preliminary data sheet

Related parts for TDA8922B

TDA8922B Summary of contents

Page 1

... Rev. 01 — 1 October 2004 1. General description The TDA8922B is a high efficiency class-D audio power amplifier with very low dissipation. The typical output power is 2 The device is available in the HSOP24 power package and in the DBS23P through-hole power package. The amplifier operates over a wide supply voltage range from 12 and consumes a very low quiescent current ...

Page 2

... P I q(tot) Stereo single-ended configuration P o Mono bridge-tied load configuration Ordering information Table 2: Type number Package TDA8922BTH HSOP24 TDA8922BJ 9397 750 13357 Preliminary data sheet Quick reference data Conditions = supply voltage total quiescent no load; no filter; no supply current ...

Page 3

... SGND2 mute 5 (22) IN2P INPUT 4 (21) STAGE IN2M 1 (18 SSA2 SSA1 (1) Pin numbers in parenthesis refer to the TDA8922BJ. Fig 1. Block diagram. 9397 750 13357 Preliminary data sheet STABI PROT 18 (12) 13 (7) RELEASE1 PWM SWITCH1 CONTROL MODULATOR ENABLE1 HANDSHAKE STABI ...

Page 4

... BOOT2 OUT2 SSP2 19 n.c. TDA8922BTH STABI SSP1 16 OUT1 15 BOOT1 V 14 DDP1 PROT 13 Fig 2. Pin configuration TDA8922BTH. 7.2 Pin description Table 3: Symbol V SSA2 SGND2 V DDA2 IN2M IN2P MODE OSC IN1P IN1M V DDA1 9397 750 13357 Preliminary data sheet 1 V SSA2 2 SGND2 ...

Page 5

... For protection a temperature sensor and a maximum current detector are built-in. The two audio channels of the TDA8922B contain two PWMs, two analog feedback loops and two differential input stages. It also contains circuits common to both channels such as the oscillator, all reference sources, the mode functionality and a digital timing manager ...

Page 6

... Fig 4. Example of mode selection circuit. 9397 750 13357 Preliminary data sheet Figure standby/ mute mute/on Rev. 01 — 1 October 2004 TDA8922B class-D power amplifier MODE pin SGND 001aab172 © Koninklijke Philips Electronics N.V. 2004. All rights reserved ...

Page 7

... The audio signal is available after a second delay of 50 ms. For pop-noise free start- recommended that the time constant applied to the MODE pin is at least 350 ms for the transition between standby and operating Rev. 01 — 1 October 2004 TDA8922B class-D power amplifier audio output ...

Page 8

... NOT shut-down completely). The amplifier can distinguish between an impedance drop of the loudspeaker and low-ohmic short across the load. In the TDA8922B this impedance threshold (Z depends on the supply voltage used. When a short is made across the load causing the impedance to drop below the threshold level (< ...

Page 9

... SSA 0. DDA SSA an overview is given of all protections and the effect on the output signal. Rev. 01 — 1 October 2004 TDA8922B class-D power amplifi the start-up procedure Section 13.7. © Koninklijke Philips Electronics N.V. 2004. All rights reserved. ...

Page 10

... In the stereo single-ended configuration it is also recommended to connect the two differential inputs in anti-phase. This has advantages for the current handling of the power supply at low signal frequencies. Fig 6. Input configuration for mono BTL application. 9397 750 13357 Preliminary data sheet Overview protections TDA8922B Complete shut-down Y [2] N [3] ...

Page 11

... V input voltage for Standby mode input voltage for Mute mode input voltage for Operating mode Rev. 01 — 1 October 2004 TDA8922B class-D power amplifier Min - [ Conditions [1] in free air ...

Page 12

... V temperature protection activation hysteresis on temperature protection = 12 time-constant on the MODE pin V ( (on) oo STBY V (mute 0.8 2.2 Rev. 01 — 1 October 2004 TDA8922B class-D power amplifier Min [ [ [ SSP1 - - slope is directly related to MUTE ON 3.0 4.2 V (V) MODE © ...

Page 13

... kHz i mute 100 Hz i standby 100 Hz i Rev. 01 — 1 October 2004 TDA8922B class-D power amplifier Min Typ Max 290 317 344 210 - 600 SGND + 4.5 SGND + 5 SGND + 6 - SGND + 2.5 - 210 - 600 Min Typ ...

Page 14

... L P THD = 0.5 % THD = kHz kHz i operating f = 100 kHz i mute 100 Hz i standby 100 Hz i Rev. 01 — 1 October 2004 TDA8922B class-D power amplifier Min Typ 45 68 [5] - 210 [6] - 160 [ [8] - 100 - 75 Section 13. unless otherwise specified. ...

Page 15

... (RMS) i(CM) measurement. See also DSon = ------------------- - – P min ---------------------------------------------------------------------------------------- - Rev. 01 — 1 October 2004 TDA8922B class-D power amplifi unless otherwise specified. Min Typ [5] - 300 [6] - 220 [7] - 200 - 75 Section 13. Figure osc © Koninklijke Philips Electronics N.V. 2004. All rights reserved. ...

Page 16

... THD = 1. o(1%) 12.1. connected between pin OSC and V OSC and C . OSC Rev. 01 — 1 October 2004 TDA8922B class-D power amplifi osc SSA © Koninklijke Philips Electronics N.V. 2004. All rights reserved. (2) (3) ( ...

Page 17

... – determined by the efficiency ( ) of the TDA8922B. The efficiency measured in the diss TDA8922B as a function of output power is given in be derived as function of output power The derating curves (given for several values of the R ...

Page 18

... For instance, this malfunction can be caused by triggering of the undervoltage or overvoltage protection or unbalance protection of the amplifier. Best remedy for pumping effects is to use the TDA8922B in a mono full-bridge application or in case of stereo half-bridge application adapt the power supply (e.g. increase supply decoupling capacitors) ...

Page 19

... A solid ground plane around the switching amplifier is necessary to prevent emission. • 100 nF capacitors must be placed as close as possible to the power supply pins of the TDA8922BTH. • The internal heat spreader of the TDA8922BTH is internally connected to V • The external heatsink must be connected to the ground plane. • Use a thermal conductive electrically non-conductive Sil-Pad of the TDA8922BTH and a small external heatsink. • ...

Page 20

... IN2P 5 5.6 k 470 nF C28 220 pF IN2 R12 C29 IN2M 4 5.6 k 470 nF C30 C34 C35 FB GND 100 nF 100 DDA SSA Fig 9. TDA8922BTH application diagram. V DDP V DDA R1 V 5.6 k DDP R3 5.6 k DZ1 R4 5V6 5 100 F/10 V ON/OFF OPERATE/MUTE V SSP SSA ...

Page 21

... Hz. Fig 11. (THD + N)/ function of output power; SE load. 001aab201 (THD (%) (1) (2) ( (W) o (1) P (2) P Fig 13. (THD + N)/S as function of frequency, SE load. Rev. 01 — 1 October 2004 TDA8922B class-D power amplifi N)/S (%) confi ...

Page 22

... Fig 15. (THD + N)/S as function of frequency, BTL load. 001aab205 cs (dB 100 (Hz) (1) P (2) P Fig 17. Channel separation as a function of frequency; 6 load. Rev. 01 — 1 October 2004 TDA8922B class-D power amplifi (1) ( BTL configuration. ...

Page 23

... Fig 19. Efficiency as a function of total output power. 001aab209 (W) (2) ( (V) S (1) 1 (2) 2 (3) 2 Fig 21. Output power as a function of supply voltage; Rev. 01 — 1 October 2004 TDA8922B class-D power amplifier 100 (2) (1) ( 120 kHz. ...

Page 24

... V ( 5.6 k Fig 23. Gain as a function of frequency 001aab213 (Hz) Fig 25. Output voltage as a function of mode voltage. Rev. 01 — 1 October 2004 TDA8922B class-D power amplifi 100 mV 330 pF ...

Page 25

... 5 kHz AES17 filter configuration and configuration. 8 BTL configuration. Rev. 01 — 1 October 2004 TDA8922B class-D power amplifier 001aab215 (1) ( (W) o © Koninklijke Philips Electronics N.V. 2004. All rights reserved. ...

Page 26

... scale (2) ( 0.32 16.0 13.0 1.1 11.1 6.2 2.9 0.23 15.8 12.6 0.9 10.9 5.8 2.5 REFERENCES JEDEC JEITA Rev. 01 — 1 October 2004 TDA8922B class-D power amplifi detail 14.5 1.1 1.7 1 0.25 0.25 0.03 13.9 0.8 1.5 EUROPEAN PROJECTION © Koninklijke Philips Electronics N.V. 2004. All rights reserved. ...

Page 27

... 28.0 12.2 10. 2.54 1.27 5.08 27.5 11.8 9.85 REFERENCES JEDEC JEITA Rev. 01 — 1 October 2004 TDA8922B class-D power amplifier non-concave view B: mounting base side ...

Page 28

... C (SnPb process) or below 245 C (Pb-free process) – for all BGA, HTSSON..T and SSOP..T packages 9397 750 13357 Preliminary data sheet Rev. 01 — 1 October 2004 TDA8922B class-D power amplifi the stg(max) © Koninklijke Philips Electronics N.V. 2004. All rights reserved. ...

Page 29

... When using a dedicated tool, all other leads can be soldered in one operation within 2 seconds to 5 seconds between 270 C and 320 C. 9397 750 13357 Preliminary data sheet 2 called small/thin packages. Rev. 01 — 1 October 2004 TDA8922B class-D power amplifier 3 350 mm so called © Koninklijke Philips Electronics N.V. 2004. All rights reserved ...

Page 30

... SO, SOJ suitable not recommended not recommended [10] [10] , WQCCN..L not suitable Data sheet status Change notice Preliminary data sheet - Rev. 01 — 1 October 2004 TDA8922B class-D power amplifier [2] Reflow [3] not suitable suitable [6] suitable suitable [7] [8] suitable [9] suitable not suitable ...

Page 31

... Trademarks Sil-Pad — Company. Rev. 01 — 1 October 2004 TDA8922B class-D power amplifi registered trademark of The Bergquist © Koninklijke Philips Electronics N.V. 2004. All rights reserved ...

Page 32

... No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights. Document order number: 9397 750 13357 Published in The Netherlands TDA8922B Date of release: 1 October 2004 ...

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