TFA9879 NXP Semiconductors, TFA9879 Datasheet
TFA9879
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TFA9879 Summary of contents
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... The TFA9879 is a high-efficiency filter-free mono class-D audio amplifier with two separate digital inputs for mobile applications. 2. General description The TFA9879 contains a processor that supports a range of sound processing features including a 5-band parametric equalizer, separate bass and treble control, a dynamic range compressor, soft clip control and volume control. Excellent audio performance combined with high Power Supply Rejection Ratio (PSRR) is achieved through the use of a closed loop configuration ...
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... Mono BTL class-D audio amplifier with digital input = 8 kHz to 96 kHz S-bus 2 S-bus MSB-justified 2 S-bus LSB-justified = 8 kHz kHz All information provided in this document is subject to legal disclaimers. Rev. 02 — 15 October 2010 TFA9879 © NXP B.V. 2010. All rights reserved ...
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... All information provided in this document is subject to legal disclaimers. Rev. 02 — 15 October 2010 Ω μ kHz kHz; clip control off Min Typ 2.5 - 1.65 1 1.2 [ 0.65 0.7 - 0.85 - 1.2 - 1.5 - 0.9 - 1.1 - 1.6 - 1.95 - 1.35 - 1.6 - 2. TFA9879 Max Unit 5 μ μ Version SOT616_3 © NXP B.V. 2010. All rights reserved ...
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... IBP DIGITAL AUDIO PLL BASS 5 POWER TREBLE BAND LIMITER BOOST EQUALIZER DAP All information provided in this document is subject to legal disclaimers. Rev. 02 — 15 October 2010 TFA9879 TEST1 TEST2 TEST3 2nd ORDER LOOP PWM H-BRIDGE 2nd ORDER LOOP © NXP B.V. 2010. All rights reserved. ...
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... I digital audio bit clock input digital audio word select input 1 All information provided in this document is subject to legal disclaimers. Rev. 02 — 15 October 2010 18 SCK2 17 SDI2 16 ADSEL1 TFA9879 15 TEST2 14 n.c. (1) DAP 13 STABA 010aaa582 TFA9879 © NXP B.V. 2010. All rights reserved ...
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... The bass and treble boost function provides another way to adjust the sound. 7. The power limiter limits the maximum output signal of the TFA9879. The power limiter settings are −124 dB in steps of 0.5 dB. This function can be used to limit the maximum output power delivered to the speakers at a fixed supply voltage and speaker impedance ...
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... Power-down mode, used to switch off the device; current consumption is reduced to a minimum; the I • Off mode, in which the class-D amplifier is switched off; the TFA9879 is completely biased and the PWM outputs are disabled. • Amplifier mode, in which the digital inputs are used to generate a signal between OUTA and OUTB ...
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... Supported Digital audio data formats The TFA9879 supports a commonly used range of I formats. The I (Table 22), are listed in TFA9879 automatically detects the number of slots by measuring the ratio between the sync frequency (8 kHz) and the data clock. PCM/IOM2 formats. TFA9879 Product data sheet ...
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... RIGHT 18 17 MSB B2 RIGHT MSB RIGHT MSB TFA9879 MSB B2 B15 LSB B17 LSB B19 LSB B10 B23 LSB 010aaa458 © NXP B.V. 2010. All rights reserved. ...
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... LSB MSB B2 Slot N − 1 Slot 2 LSB MSB B2 Slot N − 1 Slot 2 TFA9879 Data clock (kHz) on SCK pin 128 128 256 256 384 512 768 1024 256 384 512 768 1024 ...
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... Serial interface control registers (addresses 01h and 03h; see 9.2.3 Programmable high-pass filter The TFA9879 features a first-order high-pass filter on the digital audio input to block DC and low frequency signals. DC values at the output can damage the speaker. The high-pass filter cut-off frequency is determined by: • ...
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... Each band filter can be programmed to perform a band-suppression (G < band-amplification (G > 1) function around the center frequency. Each band of the TFA9879 equalizer has a second order Regalia-Mitra all-pass filter structure. The structure is shown in TFA9879 Product data sheet Mono BTL class-D audio amplifier with digital input ...
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... All information provided in this document is subject to legal disclaimers. Rev. 02 — 15 October 2010 + ½ Equation 3: ) Equation 5 < 0.49 ´ C-bus interface to TFA9879 Y(z) 010aaa406 (3) (4) and Equation 6. (5) (6) © NXP B.V. 2010. All rights reserved ...
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... M is the unsigned mantissa and E the negative signed exponent. For All information provided in this document is subject to legal disclaimers. Rev. 02 — 15 October 2010 Equation 7. 25). scale factor (dB) 0 −6 Table Equation 8. −2 ) × (7/2 2 TFA9879 and t control the 1 2 (7) ’ and k ’ are 1 2 (8) 8. Parameters (9) −1 = 1.09375 × © ...
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... Transfer functions for selected values of f All information provided in this document is subject to legal disclaimers. Rev. 02 — 15 October 2010 ’ 1 ’ 1 ’ 2 ’ 2 ’ 010aaa222 (Hz (Hz) , the center frequency c TFA9879 010aaa223 5 10 © NXP B.V. 2010. All rights reserved ...
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... Fig 9. 9.2.6 Bass and treble control The TFA9879 contains first order shelving filters for bass and treble control. The device can attenuate or boost the bass and high frequency signals independently steps within a − +18 dB range. Attenuation and boosting are dependent on the audio signal zero crossing settings (see corner frequencies are adjustable ...
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... Fig 10. Bass function steps; the treble control is set to flat Figure 11 sample rate of 48 kHz and a corner frequency of 1630 Hz. Fig 11. Treble function steps; the bass control is set to flat 9.2.7 Muting The TFA9879 support two muting options, which are controlled via the I • Soft muting • Hard muting ...
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... The TFA9879 employs zero-crossing volume control to minimize pop noise when the volume or bass/treble control is changing. When zero-crossing volume control is enabled (ZR_CRSS = 1; see TFA9879 increases or decreases the gain only when the audio signal passes a zero crossing. 9.2.10 Dynamic Range Compressor (DRC) The TFA9879 provides a DRC to automatically adjust power levels according to programmable attack and release levels. The attack level is related to the peak value of the signal ...
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... PARAMETRIC audio in shows the attack and release behavior of the DRC. All information provided in this document is subject to legal disclaimers. Rev. 02 — 15 October 2010 DRC RMS LIMITER BASS AND 5-BAND TREBLE EQUALIZER CONTROL TFA9879 010aaa550 © NXP B.V. 2010. All rights reserved ...
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... All information provided in this document is subject to legal disclaimers. Rev. 02 — 15 October 2010 TFA9879 RMS value release rate (dB/ms) 010aaa654 Control value: Release level based on RMS [2] release level value (relative to the attack [3] level ) (dB) −29 0000 − ...
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... Power limiter The power limiter controls the maximum output voltage in Amplifier mode. This feature makes it possible to limit the output voltage across a peripheral (speaker) when necessary. The TFA9879 output voltage is dependent on: • The analog supply voltage on pin V • The gain of the power limiter (G) • ...
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... Table 14. PWM frequency (kHz) 256 352.8 384 9.4 Protection The TFA9879 incorporates a wide range of protection circuits to facilitate optimal and safe application. The following protection circuits are included in the TFA9879: TFA9879 Product data sheet Mono BTL class-D audio amplifier with digital input Power limiter control settings = 5 V ...
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... OTP can also be set to no recovery. Setting the TFA9879 to Off mode and subsequently to Amplifier mode clears the OTP when no recovery is selected. 9.4.2 OverCurrent Protection (OCP) The output current of the class-D amplifiers is current limited. When an output stage exceeds a current in the range 1 2.3 A, the output stages are set floating. OCP can be cleared automatically via a programmable timer or via the I which the output stages will start to operate normally again ...
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... IBP prevents this happening by shutting down the TFA9879 if the IBP alarm is raised for the selected channel. This will disconnect the digital audio path. Valid SCK-to-LRCK ratios for PCM interface formats are 16, 32, 48, 64, 96, 128 and 192. ...
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... Logic value 10.2 I C-bus write cycle The sequence of events that needs to be followed when writing data to the TFA9879’ C-bus registers is detailed in stores two bytes of data. Data is always written in byte pairs. Data transfer is always MSB first. The write cycle sequence using SDA is as follows: 1 ...
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... NXP Semiconductors 2 10.3 I C-bus read cycle The sequence of events that needs to be followed when reading data from the TFA9879’ C-bus registers is detailed in registers stores two bytes of data. Data is always written in byte pairs. Data transfer is always MSB first. The read cycle sequence using SDA is as follows: 1 ...
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... Off mode 1: Amplifier mode 0: reset inactive 1: reset active written to generate a reset, after which the RESET bit is automatically reset Power-down mode 1: operating mode (dependent on OPMODE) TFA9879 Table 25 Table 24 Table 25 Table 24 Table 25 Table 24 Table 25 Table 24 ...
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... S data bits 100: LSB-justified 16-bit data 101: LSB-justified 18-bit data 110: LSB-justified 20-bit data 111: LSB-justified 24-bit data enable SCK signal polarity inversion SCK signal polarity inversion 1: SCK signal polarity inversion enabled TFA9879 © NXP B.V. 2010. All rights reserved ...
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... TFA9879 ) bit description © NXP B.V. 2010. All rights reserved ...
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... Section 9.2.5.1 three exponent bits of filter parameter k Section 9.2.5.1 seven-bit of filter gain parameter K Section 9.2.5.1 filter scale-factor (s); see Section 9.2.5 scaling applied 1: −6 dB amplification enabled = 48 kHz 1000 3000 1.65 1. TFA9879 ’; see 1 ’; see 1 Table 26. ’; see 2 ’; see 2 ; see 0 Table 26. E 10000 1.65 0 © ...
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... AT_RATE dynamic range compressor release level; see for the release level as a function of the value of RL_LTV. dynamic range compressor release rate; see for the release rate as a function of the value of RL_RATE TFA9879 9.3: Table 11 for Table 12 for Table 11 Table 12 © ...
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... F_BASS Description high-pass filter control, see Section 9.2.3 discussion of the high pass corner frequency as a function of the value of HP_CTRL TFA9879 Table 9 for the Table 9 for the for © NXP B.V. 2010. All rights reserved. ...
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... P_LIM TFA9879 for the de-emphasis Table 13 for © NXP B.V. 2010. All rights reserved ...
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... LRCK1 is in line with (or lower than) the selected interface format 1: the frequency of the signal on pin LRCK1 is higher than the selected interface format All information provided in this document is subject to legal disclaimers. Rev. 02 — 15 October 2010 TFA9879 © NXP B.V. 2010. All rights reserved ...
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... OUTB: 0: overcurrent protection on pin OUTB active 1: overcurrent protection on pin OUTB inactive OTPOK R overtemperature protection: 0: overtemperature protection active 1: overtemperature protection inactive All information provided in this document is subject to legal disclaimers. Rev. 02 — 15 October 2010 TFA9879 …continued © NXP B.V. 2010. All rights reserved ...
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... Mono BTL class-D audio amplifier with digital input Equivalent circuit 1 11, 12 11, 12 11, 12, 24 All information provided in this document is subject to legal disclaimers. Rev. 02 — 15 October 2010 TFA9879 ESD 010aaa632 ESD 010aaa633 ESD 010aaa634 © NXP B.V. 2010. All rights reserved ...
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... Rev. 02 — 15 October 2010 9, 10 010aaa635 7,8 13 ESD 010aaa636 15 ESD 010aaa637 Min Max −0.3 +5.5 −0.3 +1.95 - +150 −55 +150 −20 +85 −0.3 +3.6 −0.3 V DDP −0.6 V DDP −0.3 +1.95 −2 +2 −500 +500 TFA9879 Unit V V °C °C ° 0 0 © NXP B.V. 2010. All rights reserved ...
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... Mono BTL class-D audio amplifier with digital input Conditions in free air with natural convection JEDEC test board 2-layer application board in free air with natural convection All information provided in this document is subject to legal disclaimers. Rev. 02 — 15 October 2010 TFA9879 Typ Unit [1] 49 K/W 67 K/W ...
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... Min Typ Max 2.5 - 1.65 1 1.2 [ 190 - 260 −15 0 1.65 - 0.7V - DDD - - - - - - 130 - 1 710 96 175 TFA9879 Unit 5 μ μ mΩ - mΩ + 0.3V V DDD 3 pF 400 mV °C - 2.3 A 1031 kHz - kHz © NXP B.V. 2010. All rights reserved ...
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... DRC bypassed. All information provided in this document is subject to legal disclaimers. Rev. 02 — 15 October 2010 Ω μ kHz kHz; clip control off Min 0. 1.3 W; A-weighted - = 217 TFA9879 Typ Max Unit 2.75 - ...
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... SDA and SCL signals SDA and SCL signals t LOW t t BUF r t HD;STA t t HD;DAT HIGH timing All information provided in this document is subject to legal disclaimers. Rev. 02 — 15 October 2010 TFA9879 = 1 kHz kHz; clip control off Min Typ - - 1.3 - 0 ...
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... All information provided in this document is subject to legal disclaimers. Rev. 02 — 15 October 2010 Ω μ [1] [ kHz; clip control off Min Typ 8 - 32f - 010aaa624 TFA9879 Max Unit 96 kHz 64f © NXP B.V. 2010. All rights reserved ...
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... All information provided in this document is subject to legal disclaimers. Rev. 02 — 15 October 2010 Ω μ [1] [ kHz; clip control off Min Typ - - 16f - 1/f - clk TFA9879 Max Unit 8 kHz 192f 010aaa625 © NXP B.V. 2010. All rights reserved ...
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... The TFA9879 is a filter-free BTL class-D amplifier that uses a fixed frequency PWM modulation scheme (see the simplified application schematic in TFA9879 is idle (no audio input signal), the voltage across the speaker generating no additional current. Even when the PWM output is modulated by the audio input signal, the out-of-band AC ripple current in the voice coil is very small compared to the audio current ...
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... V supply without triggering OCP. 15.2 PWM output filtering The TFA9879 PWM power stage is optimized to meet the legal limits (FCC) for radiated emissions without requiring an external filter (speaker cable < 5 cm). But a low-pass LC filter is recommended if a long speaker cable can’t be avoided or other components in the application are sensitive to frequencies in the 10 MHz to 150 MHz range (e. tuner). The suggested differential low-pass filter consists of a ferrite bead inductor (Z > ...
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... TFA9879. 15.4.1 EMC considerations The decoupling capacitors on pins V TFA9879, referenced to a solid ground plane. The exposed DAP should also be connected to this ground plane. 15.4.2 Thermal considerations The TFA9879 is available in a thermally enhanced HVQFN24 (SOT616-3) package for reflow soldering ...
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... All information provided in this document is subject to legal disclaimers. Rev. 02 — 15 October 2010 battery V DDP 7 V DDP 8 OUTA 10 OUTB 9 CVDDP 10 μF GNDP 11 GNDP 12 STABA 13 CSTABA 100 nF TFA9879 speaker 4 Ω Ω 010aaa545 © NXP B.V. 2010. All rights reserved ...
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... Hz Ω DDP −1 (1) (2) −2 (3) −3 −2 − kHz kHz 100 Hz Ω DDP L TFA9879 010aaa676 10 P (W) o 010aaa678 10 P (W) o © NXP B.V. 2010. All rights reserved ...
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... THD+N (%) 10 1 −1 10 −2 10 − (Hz) ( All information provided in this document is subject to legal disclaimers. Rev. 02 — 15 October 2010 TFA9879 010aaa680 (1) ( (Hz) = 100 500 Ω DDP L 010aaa682 (1) (2) 2 ...
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... 200 mV (RMS) DDP L ripple ( 3.7 V DDP ( DDP ripple frequency TFA9879 010aaa684 (4) (3) (2) ( (Hz) 010aaa686 (Hz) ripple © NXP B.V. 2010. All rights reserved ...
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... All information provided in this document is subject to legal disclaimers. Rev. 02 — 15 October 2010 010aaa687 ( (4) (3) 2 (2) ( Ω Ω Ω Ω 100 Hz, clip control off i TFA9879 010aaa689 (V) DDP © NXP B.V. 2010. All rights reserved ...
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... P (W) o ( All information provided in this document is subject to legal disclaimers. Rev. 02 — 15 October 2010 TFA9879 010aaa696 (2) (1) −3 −2 − 3.7 V DDP = 5 V DDP = 4 Ω kHz, clip control off L i 010aaa697 ...
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... Note 1. Plastic or metal protrusions of 0.075 mm maximum per side are not included. OUTLINE VERSION IEC SOT616 Fig 28. Package outline TFA9879 (HVQFN24) TFA9879 Product data sheet Mono BTL class-D audio amplifier with digital input 1 ...
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... Solder bath specifications, including temperature and impurities TFA9879 Product data sheet Mono BTL class-D audio amplifier with digital input All information provided in this document is subject to legal disclaimers. Rev. 02 — 15 October 2010 TFA9879 © NXP B.V. 2010. All rights reserved ...
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... Package reflow temperature (°C) 3 Volume (mm ) < 350 260 260 250 Figure 29. All information provided in this document is subject to legal disclaimers. Rev. 02 — 15 October 2010 TFA9879 Figure 29) than a SnPb process, thus ≥ 350 220 220 350 to 2000 > 2000 260 260 250 245 245 245 © ...
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... MSL limit, damage level temperature minimum peak temperature = minimum soldering temperature MSL: Moisture Sensitivity Level All information provided in this document is subject to legal disclaimers. Rev. 02 — 15 October 2010 TFA9879 peak temperature time 001aac844 © NXP B.V. 2010. All rights reserved ...
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... NXP Semiconductors 18. Revision history Table 44. Revision history Document ID Release date TFA9879 v.2 20101015 • Modifications: Specification status changed to Product data sheet TFA9879 v.1 20100408 TFA9879 Product data sheet Mono BTL class-D audio amplifier with digital input Data sheet status Product data sheet Preliminary data sheet All information provided in this document is subject to legal disclaimers. Rev. 02 — ...
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... Export control — This document as well as the item(s) described herein may be subject to export control regulations. Export might require a prior authorization from national authorities. All information provided in this document is subject to legal disclaimers. Rev. 02 — 15 October 2010 TFA9879 © NXP B.V. 2010. All rights reserved ...
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... Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners C-bus — logo is a trademark of NXP B.V. http://www.nxp.com salesaddresses@nxp.com All information provided in this document is subject to legal disclaimers. Rev. 02 — 15 October 2010 TFA9879 © NXP B.V. 2010. All rights reserved ...
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... Please be aware that important notices concerning this document and the product(s) described herein, have been included in section ‘Legal information’. © NXP B.V. 2010. For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com TFA9879 ) . 44 o(RMS) All rights reserved. Date of release: 15 October 2010 Document identifier: TFA9879 ...