LM4674ATLBD

LM4674A www.ti.com SNAS366A – SEPTEMBER 2006 – REVISED MAY 2013 LM4674A Filterless 2.5W Stereo Class D Audio Power Amplifier Check for Samples: LM4674A FEATURES DESCRIPTION • • • • • • • • • The LM4674A is a single supply, high efficiency, 2.5W/channel, filterless switching audio amplifier. A low noise PWM architecture eliminates the output filter, reducing external component count, board area consumption, system cost, and simplifying design. 1 2 Output Short Circuit Protection Stereo Class D Operation No Output Filter Required Logic Selectable Gain Independent Shutdown Control Minimum External Components Click and Pop Suppression Micro-Power Shutdown Available in Space-Saving 2mm x 2mm x 0.6mm DSBGA Package APPLICATIONS • • • Mobile Phones PDAs Laptops KEY SPECIFICATIONS • • • • • • • Efficiency at 3.6V, 100mW into 8Ω 80% (typ) Efficiency at 3.6V, 500mW into 8Ω 85% (typ) Efficiency at 5V, 1W into 8Ω 85% (typ) Quiescent Power Supply Current at 3.6V Supply 4mA Power Output at VDD = 5V, RL = 4Ω, THD ≤ 10% 2.5W (typ) Power Output at VDD = 5V, RL = 8Ω, THD ≤ 10% 1.5W (typ) Shutdown Current 0.1μA (typ) The LM4674A is designed to meet the demands of mobile phones and other portable communication devices. Operating from a single 5V supply, the device is capable of delivering 2.5W/channel of continuous output power to a 4Ω load with less than 10% THD+N. Flexible power supply requirements allow operation from 2.4V to 5.5V. The LM4674A features high efficiency compared to conventional Class AB amplifiers. When driving an 8Ω speaker from a 3.6V supply, the device features 85% efficiency at PO = 500mW. Four gain options are pin selectable through the GAIN0 and GAIN1 pins. Output short circuit protection prevents the device from being damaged during fault conditions. Superior click and pop suppression eliminates audible transients on power-up/down and during shutdown. Independent left/right shutdown controls maximizes power savings in mixed mono/stereo applications. 1 2 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2006–2013, Texas Instruments Incorporated LM4674A SNAS366A – SEPTEMBER 2006 – REVISED MAY 2013 www.ti.com Typical Application 2.4V to 5.5V PVDD VDD INR- OUTRA INR+ OUTRB INL- OUTLA INL+ OUTLB LM4674A /SDR SHUTDOWN CONTROL /SDL GAIN0 GAIN CONTROL GAIN1 GND PGND Figure 1. Typical Audio Amplifier Application Circuit Connection Diagram 4 OUTLB /SDL PGND OUTRB 3 OUTLA /SDR GND OUTRA 2 PVDD G1 G0 VDD 1 INL+ INL- INR- INR+ A B C D Figure 2. DSBGA - Top View See YZR0016 Package 2 Submit Documentation Feedback Copyright © 2006–2013, Texas Instruments Incorporated Product Folder Links: LM4674A LM4674A www.ti.com SNAS366A – SEPTEMBER 2006 – REVISED MAY 2013 These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. Absolute Maximum Ratings (1) (2) (3) Supply Voltage (1) 6.0V −65°C to +150°C Storage Temperature Input Voltage Power Dissipation –0.3V to VDD +0.3V (4) Internally Limited ESD Susceptibility, all other pins (5) 2000V ESD Susceptibility (6) 200V Junction Temperature (TJMAX) Thermal Resistance (1) (2) (3) (4) (5) (6) 150°C θJA 45.7°C/W All voltages are measured with respect to the ground pin, unless otherwise specified. Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not ensure specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which ensure specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not ensured for parameters where no limit is given, however, the typical value is a good indication of device performance. If Military/Aerospace specified devices are required, please contact the TI Sales Office/ Distributors for availability and specifications. The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, θJA, and the ambient temperature, TA. The maximum allowable power dissipation is PDMAX = (TJMAX – TA)/ θJA or the number given in Absolute Maximum Ratings, whichever is lower. For the LM4674A see power derating currents for more information. Human body model, 100pF discharged through a 1.5kΩ resistor. Machine Model, 220pF–240pF discharged through all pins. Operating Ratings (1) (2) Temperature Range TMIN ≤ TA ≤ TMAX −40°C ≤ TA ≤ 85°C 2.4V ≤ VDD ≤ 5.5V Supply Voltage (1) (2) All voltages are measured with respect to the ground pin, unless otherwise specified. Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not ensure specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which ensure specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not ensured for parameters where no limit is given, however, the typical value is a good indication of device performance. Submit Documentation Feedback Copyright © 2006–2013, Texas Instruments Incorporated Product Folder Links: LM4674A 3 LM4674A SNAS366A – SEPTEMBER 2006 – REVISED MAY 2013 www.ti.com Electrical Characteristics VDD = 3.6V (1) (2) The following specifications apply for AV = 6dB, RL = 15µH + 8Ω + 15µH, f = 1kHz unless otherwise specified. Limits apply for TA = 25°C. Symbol VOS Parameter Differential Output Offset Voltage LM4674A Conditions Typical (3) VIN = 0, VDD = 2.4V to 5.0 V 5 VIN = 0, RL = ∞, IDD Quiescent Power Supply Current Both channels active, VDD = 3.6V VIN = 0, RL = ∞, Both channels active, VDD = 5V ISD Shutdown Current VSDIH Shutdown Voltage Input High VSDIL Shutdown Voltage Input Low TWU Wake Up Time AV Gain RIN Input Resistance Limit (4) VSD1 = VSD2 = GND VSHUTDOWN = 0.4V mV 4 6 5 7.5 0.03 Units (Limits) mA mA 1 μA 1.4 V (min) 0.4 V (max) 4.2 ms GAIN0, GAIN1 = GND 6 6 ± 0.5 dB GAIN0 = VDD, GAIN1 = GND 12 12 ± 0.5 dB GAIN0 = GND, GAIN1 = VDD 18 18 ± 0.5 dB GAIN0, GAIN1 = VDD 24 24 ± 0.5 AV = 6dB 28 kΩ AV = 12dB 18.75 kΩ AV = 18dB 11.25 kΩ AV = 24dB 6.25 kΩ 2.5 W VDD = 3.6V 1.2 W VDD = 2.5V 0.530 W dB RL = 15μH + 4Ω + 15μH, THD = 10% f = 1kHz, 22kHz BW VDD = 5V RL = 15μH + 8Ω + 15μH, THD = 10% f = 1kHz, 22kHz BW PO Output Power VDD = 5V 1.5 VDD = 3.6V 0.78 W VDD = 2.5V 0.350 W 1.9 W VDD = 3.6V 1 W VDD = 2.5V 0.430 W VDD = 5V 1.25 W VDD = 3.6V 0.63 W VDD = 2.5V 0.285 W PO = 500mW, f = 1kHz, RL = 8Ω 0.07 % PO = 300mW, f = 1kHz, RL = 8Ω 0.05 % 0.6 W RL = 15μH + 4Ω + 15μH, THD = 1% f = 1kHz, 22kHz BW VDD = 5V RL = 15μH + 8Ω + 15μH, THD = 1% f = 1kHz, 22kHz BW THD+N (1) (2) (3) (4) 4 Total Harmonic Distortion All voltages are measured with respect to the ground pin, unless otherwise specified. Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not ensure specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which ensure specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not ensured for parameters where no limit is given, however, the typical value is a good indication of device performance. Typicals are measured at 25°C and represent the parametric norm. Limits are specified to TI's AOQL (Average Outgoing Quality Level). Submit Documentation Feedback Copyright © 2006–2013, Texas Instruments Incorporated Product Folder Links: LM4674A LM4674A www.ti.com SNAS366A – SEPTEMBER 2006 – REVISED MAY 2013 Electrical Characteristics VDD = 3.6V(1)(2) (continued) The following specifications apply for AV = 6dB, RL = 15µH + 8Ω + 15µH, f = 1kHz unless otherwise specified. Limits apply for TA = 25°C. Symbol Parameter Conditions LM4674A Typical (3) Limit (4) Units (Limits) VRIPPLE = 200mVP-P Sine, fRipple = 217Hz, Inputs AC GND, PSRR 75 dB 75 dB 67 dB 85 % dB CI = 1μF, input referred Power Supply Rejection Ratio VRIPPLE = 1VP-P Sine, fRipple = 1kHz, Inputs AC GND, CI = 1μF, input referred CMRR Common Mode Rejection Ratio η Efficiency VRIPPLE = 1VP-P fRIPPLE = 217Hz PO = 1W, f = 1kHz, RL = 8Ω, VDD = 5V Crosstalk PO = 500mW, f = 1kHz 84 SNR Signal to Noise Ratio VDD = 5V, PO = 1W 96 dB εOS Output Noise Input referred, A-Weighted Filter 20 μV External Components Description (Figure 1) Components Functional Description 1. CS Supply bypass capacitor which provides power supply filtering. Refer to the Power Supply Bypassing section for information concerning proper placement and selection of the supply bypass capacitor. 2. CI Input AC coupling capacitor which blocks the DC voltage at the amplifier's input terminals. Submit Documentation Feedback Copyright © 2006–2013, Texas Instruments Incorporated Product Folder Links: LM4674A 5 LM4674A SNAS366A – SEPTEMBER 2006 – REVISED MAY 2013 www.ti.com Block Diagrams 2.4V to 5.5V 0.1 PF 1 PF VDD PVDD 1 PF OUTRA INRGAIN/ MODULATOR 1 PF H-BRIDGE INR+ OUTRB /SDR GAIN0 OSCILLATOR GAIN1 /SDL 1 PF OUTLA INLGAIN/ MODULATOR 1 PF H-BRIDGE INL+ OUTLB GND PGND PVDD VDD OSCILLATOR INL+ OUTLA PWM MODULATOR H-BRIDGE INL- OUTLB G0 G1 GAIN CONTROL CLICK/POP SUPPRESSION BIAS OUTRA INR+ PWM MODULATOR H-BRIDGE OUTRB INR- PGND GND /SDR /SDL Figure 3. Differential Input Configuration 6 Submit Documentation Feedback Copyright © 2006–2013, Texas Instruments Incorporated Product Folder Links: LM4674A LM4674A www.ti.com SNAS366A – SEPTEMBER 2006 – REVISED MAY 2013 Typical Performance Characteristics THD+N vs Output Power f = 1kHz, AV = 24dB, RL = 8Ω THD+N vs Output Power f = 1kHz, AV = 6dB, RL = 8Ω 100 100 10 10 VDD = 5V VDD = 3.6V THD+N (%) THD+N (%) VDD = 3.6V 1 VDD = 2.5V VDD = 5V 1 VDD = 2.5V 0.1 0.1 0.01 0.001 0.01 0.1 1 0.01 0.001 10 OUTPUT POWER (W) 1 10 OUTPUT POWER (W) Figure 5. THD+N vs Output Power f= 1kHz, AV = 24dB, RL = 4Ω THD+N vs Output Power f = 1kHz, AV = 6dB, RL = 4Ω 100 10 10 VDD = 5V 1 VDD = 2.5V VDD = 5V VDD = 3.6V THD+N (%) VDD = 3.6V THD+N (%) 0.1 Figure 4. 100 1 VDD = 2.5V 0.1 0.1 0.01 0.001 0.01 0.1 1 0.01 0.001 10 OUTPUT POWER (W) 0.01 0.1 1 10 OUTPUT POWER (W) Figure 6. Figure 7. THD+N vs Frequency VDD = 2.5V, POUT = 100mW, RL = 8Ω THD+N vs Frequency VDD = 3.6V, POUT = 250mW, RL = 8Ω 100 100 10 10 THD+N (%) THD+N (%) 0.01 1 0.1 0.01 0.001 10 1 0.1 0.01 100 1000 10000 100000 0.001 10 100 1000 10000 FREQUENCY (W) FREQUENCY (W) Figure 8. Figure 9. 100000 Submit Documentation Feedback Copyright © 2006–2013, Texas Instruments Incorporated Product Folder Links: LM4674A 7 LM4674A SNAS366A – SEPTEMBER 2006 – REVISED MAY 2013 www.ti.com Typical Performance Characteristics (continued) THD+N vs Frequency VDD = 2. 5V, POUT = 100mW, RL = 4Ω 100 100 10 10 THD+N (%) THD+N (%) THD+N vs Frequency VDD = 5V, POUT = 375mW, RL = 8Ω 1 0.1 0.01 0.1 0.01 0.001 10 100 1000 10000 0.001 10 100000 10000 100000 FREQUENCY (W) Figure 11. THD+N vs Frequency VDD = 3.6V, POUT = 250mW, RL = 4Ω THD+N vs Frequency VDD = 5V, POUT = 375mW, RL = 4Ω 100 100 10 10 1 0.1 1 0.1 0.01 0.001 10 100 1000 10000 0.001 10 100000 100 1000 10000 FREQUENCY (W) FREQUENCY (W) Figure 12. Figure 13. Efficiency vs. Output Power RL = 4Ω, f = 1kHz Efficiency vs. Output Power RL = 8Ω, f = 1kHz 100 100000 100 90 90 VDD = 5V 80 70 60 50 VDD = 3.6V 40 30 VDD = 5V 80 EFFICIENCY (%) EFFICIENCY (%) 1000 Figure 10. 0.01 V DD = 2.5V 70 60 VDD = 3.6V 50 40 V DD = 2.5V 30 20 20 10 10 0 0 0 8 100 FREQUENCY (W) THD+N (%) THD+N (%) 1 500 1000 1500 2000 0 200 400 600 800 1000 1200 OUTPUT POWER (mW) OUTPUT POWER (mW) Figure 14. Figure 15. Submit Documentation Feedback Copyright © 2006–2013, Texas Instruments Incorporated Product Folder Links: LM4674A LM4674A www.ti.com SNAS366A – SEPTEMBER 2006 – REVISED MAY 2013 Typical Performance Characteristics (continued) Power Dissipation vs. Output Power RL = 4Ω, f = 1kHz Power Dissipation vs. Output Power RL = 8Ω, f = 1kHz 1000 400 VDD = 5V POWER DISSIPATION (mW) POWER DISSIPATION (mW) VDD = 5V VDD = 3.6V 750 V DD = 2.5V 500 250 300 VDD = 3.6V V DD = 2.5V 200 100 POUT = P OUTL + P OUTR 0 0 1000 2000 3000 POUT = P OUTL + P OUTR 0 4000 0 500 OUTPUT POWER (mW) 1000 1500 2000 2500 OUTPUT POWER (mW) Figure 16. Figure 17. Output Power vs. Supply Voltage RL = 4Ω, f = 1kHz Output Power vs. Supply Voltage RL = 8Ω, f = 1kHz 3000 2000 OUTPUT POWER (mW) OUTPUT POWER (mW) 2500 2000 THD+N = 10% 1500 THD+N = 1% 1000 1500 THD+N = 10% 1000 THD+N = 1% 500 500 0 2.5 3 3.5 4 4.5 5 0 2.5 5.5 SUPPLY VOLTAGE (V) 3.5 4 4.5 5 5.5 SUPPLY VOLTAGE (V) Figure 18. Figure 19. PSRR vs. Frequency VDD = 3.6V, VRIPPLE= 200mVP-P, RL = 8Ω Crosstalk vs. Frequency VDD = 3.6V, VRIPPLE = 1VP-P, RL = 8Ω 0 0 -10 -10 -20 CROSSTALK (dB) -20 -30 PSRR (dB) 3 -40 -50 -60 -70 -40 -50 -60 -70 -80 -90 -80 -90 10 -30 100 1000 10000 100000 -100 10 100 1000 10000 100000 FREQUENCY (Hz) FREQUENCY (Hz) Figure 20. Figure 21. Submit Documentation Feedback Copyright © 2006–2013, Texas Instruments Incorporated Product Folder Links: LM4674A 9 LM4674A SNAS366A – SEPTEMBER 2006 – REVISED MAY 2013 www.ti.com Typical Performance Characteristics (continued) CMRR vs. Frequency VDD = 3.6V, VCM = 1VP-P, RL = 8Ω 8 -10 7 SUPPLY CURRENT (mA) 0 -20 CMRR(dB) Supply Current vs. Supply Voltage No Load -30 -40 -50 -60 -70 -80 10 5 4 3 2 1 100 1000 10000 100000 FREQUENCY (Hz) 0 2.5 3 3.5 4 4.5 5 5.5 SUPPLY VOLTAGE (V) Figure 22. 10 6 Figure 23. Submit Documentation Feedback Copyright © 2006–2013, Texas Instruments Incorporated Product Folder Links: LM4674A LM4674A www.ti.com SNAS366A – SEPTEMBER 2006 – REVISED MAY 2013 APPLICATION INFORMATION GENERAL AMPLIFIER FUNCTION The LM4674A stereo Class D audio power amplifier features a filterless modulation scheme that reduces external component count, conserving board space and reducing system cost. The outputs of the device transition from VDD to GND with a 300kHz switching frequency. With no signal applied, the outputs (OUT_A and OUT_B) switch with a 50% duty cycle, in phase, causing the two outputs to cancel. This cancellation results in no net voltage across the speaker, thus there is no current to the load in the idle state. With the input signal applied, the duty cycle (pulse width) of the LM4674A outputs changes. For increasing output voltage, the duty cycle of OUT_A increases, while the duty cycle of OUT_B decreases. For decreasing output voltages, the converse occurs. The difference between the two pulse widths yields the differential output voltage. DIFFERENTIAL AMPLIFIER EXPLANATION As logic supplies continue to shrink, system designers are increasingly turning to differential analog signal handling to preserve signal to noise ratios with restricted voltage signs. The LM4674A features two fully differential amplifiers. A differential amplifier amplifies the difference between the two input signals. Traditional audio power amplifiers have typically offered only single-ended inputs resulting in a 6dB reduction of SNR relative to differential inputs. The LM4674A also offers the possibility of DC input coupling which eliminates the input coupling capacitors. A major benefit of the fully differential amplifier is the improved common mode rejection ratio (CMRR) over single ended input amplifiers. The increased CMRR of the differential amplifier reduces sensitivity to ground offset related noise injection, especially important in noisy systems. POWER DISSIPATION AND EFFICIENCY The major benefit of a Class D amplifier is increased efficiency versus a Class AB. The efficiency of the LM4674A is attributed to the region of operation of the transistors in the output stage. The Class D output stage acts as current steering switches, consuming negligible amounts of power compared to their Class AB counterparts. Most of the power loss associated with the output stage is due to the IR loss of the MOSFET onresistance, along with switching losses due to gate charge. SHUTDOWN FUNCTION The LM4674A features independent left and right channel shutdown controls, allowing each channel to be disabled independently. /SDR controls the right channel, while /SDL controls the left channel. Driving either low disables the corresponding channel, reducing supply current to 0.03µA. It is best to switch between ground and VDD for minimum current consumption while in shutdown. The LM4674A may be disabled with shutdown voltages in between GND and VDD, the idle current will be greater than the typical 0.03µA value. Increased THD+N may also be observed when a voltage of less than VDD is applied to /SD_ for logic levels between GND and VDD Bypass /SD_ with a 0.1μF capacitor. The LM4674A shutdown inputs have internal pulldown resistors. The purpose of these resistors is to eliminate any unwanted state changes when /SD_ is floating. To minimize shutdown current, /SD_ should be driven to GND or left floating. If /SD_ is not driven to GND or floating, an increase in shutdown supply current will be noticed. SINGLE-ENDED AUDIO AMPLIFIER CONFIGURATION The LM4674A is compatible with single-ended sources. When configured for single-ended inputs, input capacitors must be used to block and DC component at the input of the device. Figure 25 shows the typical single-ended applications circuit. AUDIO AMPLIFIER POWER SUPPLY BYPASSING/FILTERING Proper power supply bypassing is critical for low noise performance and high PSRR. Place the supply bypass capacitor as close to the device as possible. Typical applications employ a voltage regulator with 10µF and 0.1µF bypass capacitors that increase supply stability. These capacitors do not eliminate the need for bypassing of the LM4674A supply pins. A 1µF capacitor is recommended. Submit Documentation Feedback Copyright © 2006–2013, Texas Instruments Incorporated Product Folder Links: LM4674A 11 LM4674A SNAS366A – SEPTEMBER 2006 – REVISED MAY 2013 www.ti.com AUDIO AMPLIFIER INPUT CAPACITOR SELECTION Input capacitors may be required for some applications, or when the audio source is single-ended. Input capacitors block the DC component of the audio signal, eliminating any conflict between the DC component of the audio source and the bias voltage of the LM4674A. The input capacitors create a high-pass filter with the input resistors RI. The -3dB point of the high pass filter is found using Equation 1 below. f = 1 / 2πRINCIN (1) The values for RI can be found in the EC table for each gain setting. The input capacitors can also be used to remove low frequency content from the audio signal. Small speakers cannot reproduce, and may even be damaged by low frequencies. High pass filtering the audio signal helps protect the speakers. When the LM4674A is using a single-ended source, power supply noise on the ground is seen as an input signal. Setting the high-pass filter point above the power supply noise frequencies, 217Hz in a GSM phone, for example, filters out the noise such that it is not amplified and heard on the output. Capacitors with a tolerance of 10% or better are recommended for impedance matching and improved CMRR and PSRR. AUDIO AMPLIFIER GAIN SETTING The LM4674A features four internally configured gain settings. The device gain is selected through the two logic inputs, G0 and G1. The gain settings are as shown in the following table. G1 G0 GAIN 0 0 2 6 0 1 4 12 1 0 8 18 1 1 16 24 V/V dB PCB LAYOUT GUIDELINES As output power increases, interconnect resistance (PCB traces and wires) between the amplifier, load and power supply create a voltage drop. The voltage loss due to the traces between the LM4674A and the load results in lower output power and decreased efficiency. Higher trace resistance between the supply and the LM4674A has the same effect as a poorly regulated supply, increasing ripple on the supply line, and reducing peak output power. The effects of residual trace resistance increases as output current increases due to higher output power, decreased load impedance or both. To maintain the highest output voltage swing and corresponding peak output power, the PCB traces that connect the output pins to the load and the supply pins to the power supply should be as wide as possible to minimize trace resistance. The use of power and ground planes will give the best THD+N performance. In addition to reducing trace resistance, the use of power planes creates parasitic capacitors that help to filter the power supply line. The inductive nature of the transducer load can also result in overshoot on one of both edges, clamped by the parasitic diodes to GND and VDD in each case. From an EMI standpoint, this is an aggressive waveform that can radiate or conduct to other components in the system and cause interference. In is essential to keep the power and output traces short and well shielded if possible. Use of ground planes beads and micros-strip layout techniques are all useful in preventing unwanted interference. As the distance from the LM4674A and the speaker increases, the amount of EMI radiation increases due to the output wires or traces acting as antennas become more efficient with length. Ferrite chip inductors places close to the LM4674A outputs may be needed to reduce EMI radiation. 12 Submit Documentation Feedback Copyright © 2006–2013, Texas Instruments Incorporated Product Folder Links: LM4674A LM4674A www.ti.com SNAS366A – SEPTEMBER 2006 – REVISED MAY 2013 PVDD VDD OSCILLATOR INL+ OUTLA PWM MODULATOR H-BRIDGE INL- OUTLB G0 G1 GAIN CONTROL CLICK/POP SUPPRESSION BIAS OUTRA INR+ PWM MODULATOR H-BRIDGE OUTRB INR- PGND GND /SDR /SDL Figure 24. Differential Input Configuration PVDD VDD OSCILLATOR INL+ OUTLA PWM MODULATOR H-BRIDGE INL- OUTLB G0 G1 GAIN CONTROL CLICK/POP SUPPRESSION BIAS OUTRA INR+ PWM MODULATOR H-BRIDGE OUTRB INR- PGND GND /SDR /SDL Figure 25. Single-Ended Input Configuration Submit Documentation Feedback Copyright © 2006–2013, Texas Instruments Incorporated Product Folder Links: LM4674A 13 LM4674A SNAS366A – SEPTEMBER 2006 – REVISED MAY 2013 www.ti.com REVISION HISTORY Rev Date Description 1.0 9/13/06 Initial WEB release. Changes from Original (May 2013) to Revision A • 14 Page Changed layout of National Data Sheet to TI format .......................................................................................................... 13 Submit Documentation Feedback Copyright © 2006–2013, Texas Instruments Incorporated Product Folder Links: LM4674A PACKAGE OPTION ADDENDUM www.ti.com 10-Dec-2020 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (°C) Device Marking (3) (4/5) (6) LM4674ATL/NOPB ACTIVE DSBGA YZR 16 250 RoHS & Green SNAGCU Level-1-260C-UNLIM -40 to 85 GI2 LM4674ATLX/NOPB ACTIVE DSBGA YZR 16 3000 RoHS & Green SNAGCU Level-1-260C-UNLIM -40 to 85 GI2 (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of