19-3050; Rev 7; 4/10 KIT ATION EVALU E L B A AVAIL Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers The MAX9718/MAX9719 differential input audio power amplifiers are ideal for portable audio devices with internal speakers. The differential input structure improves noise rejection and provides common-mode rejection. A bridge-tied load (BTL) architecture minimizes external component count, while providing highquality, power audio amplification. The MAX9718 is a single-channel amplifier while the MAX9719 is a dualchannel amplifier for stereo systems. Both devices deliver 1.4W continuous average power per channel to a 4Ω load with less than 1% THD+N while operating from a single +5V supply. The devices are available as adjustable gain amplifiers or with internally fixed gains of 0dB, 3dB, and 6dB to reduce component count. A shutdown input disables the bias generator and amplifiers and reduces quiescent current consumption to less than 100nA. The MAX9718 shutdown input can be set as active high or active low. These devices feature Maxim’s comprehensive click-and-pop suppression circuitry that reduces audible clicks and pops during startup and shutdown. The MAX9718 is pin compatible with the LM4895, and is available in 9-bump UCSP™, 10-pin TDFN, and 10-pin µMAX® packages. The MAX9719 is available in 16-pin TQFN, 16-pin TSSOP, and 16-bump UCSP packages. Both devices operate over the -40°C to +85°C extended temperature range. Applications Mobile Phones Features o 2.7V to 5.5V Single-Supply Operation o Very High -93dB PSRR at 217Hz o 1.4W into 4Ω at 1% THD+N (per Channel) o Differential Input o Internal Fixed Gain to Reduce Component Count o Adjustable Gain Option (MAX9718A/H/MAX9719A) o 100nA Low-Power Shutdown Mode o No Audible Clicks or Pops at Power-Up/Down o Improved Performance Pin-Compatible Upgrade to LM4895 (MAX9718D/G) o 1.8V Logic Compatible Ordering Information PART TEMP RANGE PINPACKAGE TOP MARK MAX9718AEBL+TG45 -40°C to +85°C 3 x 3 UCSP +ADX MAX9718AETB+T -40°C to +85°C 10 TDFN-EP* +Denotes lead(Pb)-free/RoHS-compliant package. *EP = Exposed pad. G45 indicates protective die coating. +AAV Ordering Information continued at end of data sheet. Pin Configurations appear at end of data sheet. UCSP is a trademark of Maxim Integrated Products, Inc. µMAX is a registered trademark of Maxim Integrated Products, Inc. PDAs Portable Devices Simplified Block Diagrams SINGLE SUPPLY 2.7V TO 5.5V SINGLE SUPPLY 2.7V TO 5.5V OUTL+ INL+ OUT+ IN+ INL- IN- OUT- OUTLOUTR+ INR+ SHDN INRSHDM OUTR- MAX9718 SHDN MAX9719 ________________________________________________________________ Maxim Integrated Products 1 For pricing delivery, and ordering information please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. MAX9718/MAX9719 General Description MAX9718/MAX9719 Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers ABSOLUTE MAXIMUM RATINGS Supply Voltage (VCC to GND) ..................................-0.3V to +6V Any Other Pin to GND ...............................-0.3V to (VCC + 0.3V) IN_, BIAS, SHDM, SHDN, SHDN Continuous Current ........20mA OUT_ Short-Circuit Duration to GND or VCC .............Continuous Continuous Power Dissipation (TA = +70°C) 9-Bump UCSP (derate 5.2mW/°C above +70°C) .......1067mW 10-Pin TDFN (derate 24.4mW/°C above +70°C) ........1951mW 10-Pin µMAX (derate 10.3mW/°C above +70°C) ..........825mW 16-Bump UCSP (derate 8.2mW/°C above +70°C) .....1633mW 16-Pin TQFN (derate 16.9mW/°C above +70°C) ........1349mW 16-Pin TSSOP (derate 21.3mW/°C above +70°C) ......1702mW Operating Temperature Range ...........................-40°C to +85°C Junction Temperature .....................................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C Soldering Temperature (reflow) .......................................+260°C Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS—5V Supply (VCC = 5V, GND = 0, SHDN/SHDN = VCC (MAX9718/MAX9719), SHDM = GND (MAX9718), RIN = RF = 10kΩ (MAX971_A/H), TA = +25°C. CBIAS = 0.1µF, no load. Typical values are at TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER Supply Voltage Supply Current Shutdown Supply Current SYMBOL VCC ICC ISHDN SHDN, SHDN, SHDM Threshold VIH SHDN, SHDN, SHDM Threshold VIH Output Offset Voltage VIL VIL VOS Common-Mode Input Voltage VIC Input Impedance RIN Common-Mode Rejection Ratio CMRR Power-Supply Rejection Ratio PSRR Output Power Total Harmonic Distortion Plus Noise 2 CONDITIONS POUT THD+N MIN TYP MAX UNITS 5.5 V 5.0 7.5 mA 0.1 1 µA 2.7 VIN- = VIN+ = VBIAS, TA = -40°C to +85°C, per amplifier (Note 2) SHDN = SHDM = SHDN = GND, per amplifier 0.7 x VCC MAX9718A/B/C/D 0.3 x VCC 1.4 MAX9718E/F/G/H VIN- = VIN+ = VBIAS Inferred from CMRR test 0.4 AV = 0dB, MAX971_A/H, MAX971_B/E ±1 ±10 AV = 3dB, MAX971_C/F ±1 ±15 AV = 6dB, MAX971_D/G ±1 ±20 AV = 0dB, MAX971_B/E 0.5 AV = 3dB, MAX971_C/F 0.5 VCC - 0.6 AV = 6dB, MAX971_D/G 0.5 VCC - 0.8 0.5 MAX971_B/E, MAX971_C/F, MAX971_D/G 10 15 -50 -60 VIN- = VIN+ = VBIAS, VRIPPLE = 200mVP-P, RL = 8Ω, CBIAS = 1µF THD+N = 1%, fIN = 1kHz (Note 4) V mV VCC - 0.5 External gain, MAX971_A/H fN = 1kHz V V VCC - 1.2 -60 f = 217Hz -93 f = 1kHz -90 20 kΩ dB dB RL = 8Ω RL = 4Ω RL = 8Ω, fIN = 1kHz, POUT = 0.75W, VCC = 5V, AV = 6dB (Note 5) 0.8 1.1 1.4 0.002 _______________________________________________________________________________________ W % Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers (VCC = 5V, GND = 0, SHDN/SHDN = VCC (MAX9718/MAX9719), SHDM = GND (MAX9718), RIN = RF = 10kΩ (MAX971_A/H), TA = +25°C. CBIAS = 0.1µF, no load. Typical values are at TA = +25°C, unless otherwise noted.) (Note 1) MAX UNITS Gain Accuracy PARAMETER MAX971_B/E, MAX971_C/F, MAX971_D/G ±1 % Channel-to-Channel Gain Matching MAX9719B/E, MAX9719C/F, MAX9719D/G ±1 % Signal-to-Noise Ratio SYMBOL MIN dB Thermal-Shutdown Threshold +160 °C Thermal-Shutdown Hysteresis 15 °C 500 pF tPU 10 ms Shutdown Time tSHDN 3.5 µs Turn-Off Transient VPOP (Note 6) 50 mV MAX9719, fIN = 1kHz -85 dB Power-Up/Enable from Shutdown Time CLOAD Crosstalk POUT = 1W, RL = 8Ω TYP -104 Maximum Capacitive Drive SNR CONDITIONS Bridge-tied capacitance ELECTRICAL CHARACTERISTICS—3V Supply (VCC = 3V, GND = 0, SHDN/SHDN = VCC (MAX9718/MAX9719), SHDM = GND (MAX9718), RIN = RF = 10kΩ (MAX971_A/H), TA = +25°C. CBIAS = 0.1µF, no load. Typical values are at TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER Supply Current SYMBOL ICC Shutdown Supply Current SHDN, SHDN, SHDM Threshold Common-Mode Bias Voltage Output Offset Voltage ISHDN SHDN = SHDM = SHDN = GND, per amplifier TYP MAX UNITS 3.8 6.0 mA 0.1 1 µA 0.7 x VCC 0.3 x VCC VIL VBIAS VOS VIC Input Impedance RIN Power-Supply Rejection Ratio MIN VIN- = VIN+ = VBIAS, TA = -40°C to +85°C, per amplifier (Note 2) VIH Common-Mode Input Voltage Common-Mode Rejection Ratio CONDITIONS CMRR PSRR VCC/2 - 5% VCC/2 VCC/2 + 5% AV = 0dB, MAX971_A/H MAX971_B/E ±1 ±10 AV = 3dB, MAX971_C/F ±1 ±15 AV = 6dB, MAX971_D/G ±1 ±20 (Note 3) VIN- = VIN+ = VBIAS Inferred from CMRR test AV = 0dB, MAX971_B/E 0.5 AV = 3dB, MAX971_C/F 0.5 VCC - 0.8 AV = 6dB, MAX971_D/G 0.5 VCC - 1.0 0.5 MAX971_B/E, MAX971_C/F, MAX971_D/G 10 15 -50 -60 VIN- = VIN+ = VBIAS, VRIPPLE = 200mVP-P, RL = 8Ω, CBIAS = 1µF V mV VCC - 0.7 External gain, MAX971_A/H fN = 1kHz V V VCC - 1.2 -70 f = 217Hz -93 f = 1kHz -90 20 kΩ dB dB _______________________________________________________________________________________ 3 MAX9718/MAX9719 ELECTRICAL CHARACTERISTICS—5V Supply (continued) ELECTRICAL CHARACTERISTICS—3V Supply (continued) (VCC = 3V, GND = 0, SHDN/SHDN = VCC (MAX9718/MAX9719), SHDM = GND (MAX9718), RIN = RF = 10kΩ (MAX971_A/H), TA = +25°C. CBIAS = 0.1µF, no load. Typical values are at TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL Output Power POUT Total Harmonic Distortion Plus Noise THD+N CONDITIONS MIN TYP RL = 8Ω, THD+N = 1%, fIN = 1kHz (Note 4) RL = 8Ω, fIN = 1kHz, POUT = 0.25W, AV = 6dB MAX UNITS 475 mW 0.003 % Thermal-Shutdown Threshold +160 °C Thermal-Shutdown Hysteresis 15 °C 500 pF tPU 10 ms Shutdown Time tSHDN 3 µs Turn-Off Transient VPOP (Note 6) 40 mV MAX9719, fN = 1kHz -85 dB Maximum Capacitive Drive CLOAD Power-Up/Enable from Shutdown Time Crosstalk Bridge-tied capacitance Note 1: All specifications are 100% tested at TA = +25°C. Specifications over temperature (TA = TMIN to TMAX) are guaranteed by design, not production tested. Note 2: Quiescent power-supply current is specified and tested with no load. Quiescent power-supply current depends on the offset voltage when a practical load is connected to the amplifier. Guaranteed by design. Note 3: Common-mode bias voltage is the voltage on BIAS and is nominally VCC/2. Note 4: Output power is specified by a combination of a functional output current test and characterization analysis. Note 5: Measurement bandwidth for THD+N is 22Hz to 22kHz. Note 6: Peak voltage measured at power-on, power-off, into or out of SHDN. Bandwidth defined by A-weighted filters, inputs at AC GND. VCC rise and fall times greater than or equal to 1ms. Typical Operating Characteristics (VCC = 5V, CBIAS = 0.1µF, THD+N measurement bandwidth = 22Hz to 22kHz, TA = +25°C, unless otherwise noted.) OUTPUT POWER = 1W 0.01 0.01 1k FREQUENCY (Hz) MAX9718 toc03 0.1 OUTPUT POWER = 750mW 0.01 10k 100k OUTPUT POWER = 250mW 0.0001 0.0001 0.0001 100 1 0.001 0.001 0.001 10 VCC = 5V RL = 8Ω AV = 2 OUTPUT POWER = 200mW OUTPUT POWER = 50mW 4 MAX9718 toc02 OUTPUT POWER = 1W 0.1 10 THD+N (%) 0.1 VCC = 5V RL = 4Ω AV = 4 1 THD+N (%) VCC = 5V RL = 4Ω AV = 2 1 10 MAX9718 toc01 10 TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY THD+N (%) MAX9718/MAX9719 Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers 10 100 1k FREQUENCY (Hz) 10k 100k 10 100 1k FREQUENCY (Hz) _______________________________________________________________________________________ 10k 100k Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers OUTPUT POWER = 800mW 0.01 0.1 OUTPUT POWER = 50mW 0.01 MAX9718 toc06 MAX9718 toc05 10 VCC = 3V RL = 4Ω AV = 4 1 THD+N (%) THD+N (%) 0.1 VCC = 3V RL = 4Ω AV = 2 1 THD+N (%) VCC = 5V RL = 8Ω AV = 4 1 10 MAX9718 toc04 10 TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY OUTPUT POWER = 175mW 0.1 0.01 OUTPUT POWER = 70mW OUTPUT POWER = 200mW 0.001 0.001 0.0001 0.0001 0.0001 10 100 1k 10k 10 100k 100 1k 10k 10 100k 100 1k 100k FREQUENCY (Hz) FREQUENCY (Hz) TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY TOTAL HARMONIC DISTORTION PLUS NOISE vs. OUTPUT POWER OUTPUT POWER = 100mW 0.01 0.1 OUTPUT POWER = 50mW 0.01 OUTPUT POWER = 200mW 0.001 0.001 MAX9718 toc09 VCC = 5V RL = 4Ω AV = 2 10 THD+N (%) THD+N (%) 0.1 VCC = 3V RL = 8Ω AV = 4 1 100 MAX9718 toc08 10 MAX9718 toc07 VCC = 3V RL = 8Ω AV = 2 1 1 fIN = 10kHz fIN = 100Hz 0.1 0.01 fIN = 1kHz OUTPUT POWER = 250mW 0.001 0.0001 0.0001 10 100 1k 10k 10 100k 100 1k 10k 0 100k 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 FREQUENCY (Hz) FREQUENCY (Hz) OUTPUT POWER (W) TOTAL HARMONIC DISTORTION PLUS NOISE vs. OUTPUT POWER TOTAL HARMONIC DISTORTION PLUS NOISE vs. OUTPUT POWER TOTAL HARMONIC DISTORTION PLUS NOISE vs. OUTPUT POWER fIN = 100Hz fIN = 10kHz 0.1 fIN = 1kHz 0.1 0.001 0.5 1.0 OUTPUT POWER (W) 1.5 2.0 10 1 fIN = 100Hz fIN = 1kHz 0.1 fIN = 10kHz 0.01 0.001 0.001 0 VCC = 5V RL = 8Ω AV = 4 fIN = 10kHz 0.01 fIN = 1kHz MAX9718 toc12 MAX9718 toc11 1 fIN = 100Hz 0.01 100 THD+N (%) 1 VCC = 5V RL = 8Ω AV = 2 10 THD+N (%) VCC = 5V RL = 4Ω AV = 4 10 100 MAX9718 toc10 100 THD+N (%) 10k FREQUENCY (Hz) 10 THD+N (%) OUTPUT POWER = 250mW 0.001 0 0.2 0.4 0.6 0.8 1.0 OUTPUT POWER (W) 1.2 1.4 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 OUTPUT POWER (W) _______________________________________________________________________________________ 5 MAX9718/MAX9719 Typical Operating Characteristics (continued) (VCC = 5V, CBIAS = 0.1µF, THD+N measurement bandwidth = 22Hz to 22kHz, TA = +25°C, unless otherwise noted.) Typical Operating Characteristics (continued) (VCC = 5V, CBIAS = 0.1µF, THD+N measurement bandwidth = 22Hz to 22kHz, TA = +25°C, unless otherwise noted.) 0.1 fIN = 1kHz 1 fIN = 10kHz 0.1 VCC = 3V RL = 8Ω AV = 2 10 THD+N (%) THD+N (%) THD+N (%) fIN = 10kHz 1 VCC = 3V RL = 4Ω AV = 4 10 100 MAX9718 toc14 VCC = 3V RL = 4Ω AV = 2 10 100 MAX9718 toc13 100 TOTAL HARMONIC DISTORTION PLUS NOISE vs. OUTPUT POWER TOTAL HARMONIC DISTORTION PLUS NOISE vs. OUTPUT POWER 1 0.1 fIN = 1kHz fIN = 100Hz 0.01 MAX9718 toc15 TOTAL HARMONIC DISTORTION PLUS NOISE vs. OUTPUT POWER fIN = 10kHz fIN = 1kHz 0.01 0.01 fIN = 100Hz fIN = 100Hz 0.001 100 200 300 400 500 600 0 100 200 300 400 500 0 600 100 200 300 400 500 600 OUTPUT POWER (mW) OUTPUT POWER (mW) OUTPUT POWER (mW) TOTAL HARMONIC DISTORTION PLUS NOISE vs. OUTPUT POWER TOTAL HARMONIC DISTORTION PLUS NOISE vs. COMMON-MODE VOLTAGE TOTAL HARMONIC DISTORTION PLUS NOISE vs. COMMON-MODE VOLTAGE fIN = 1kHz 0.1 fIN = 10kHz 0.001 MAX9718 toc18 MAX9718 toc17 0.01 VCC = 3V PO = 200mW AV = 2 THD+N (%) 1 VCC = 5V PO = 200mW AV = 2 THD+N (%) VCC = 3V RL = 8Ω AV = 4 10 0.01 MAX9718 toc16 100 THD+N (%) 0.001 0.001 0 0.001 0.01 fIN = 100Hz 200 300 400 2 3 4 0 5 1.5 2.0 2.5 OUTPUT POWER vs. SUPPLY VOLTAGE OUTPUT POWER vs. SUPPLY VOLTAGE OUTPUT POWER vs. LOAD RESISTANCE THD+N = 1% 0.5 0 1.2 THD+N = 10% 1.0 0.8 THD+N = 1% 0.6 4.0 4.5 SUPPLY VOLTAGE (V) 5.0 5.5 1.6 1.4 THD+N = 10% 1.2 1.0 0.8 THD+N = 1% 0.6 0.4 0.4 0.2 0.2 0 0 3.5 VCC = 5V f = 1kHz AV = 2 1.8 3.0 MAX9718 toc21 RL = 8Ω f = 1kHz AV = 2 1.6 2.0 MAX9718 toc20 1.8 1.4 1.0 3.0 1.0 COMMON-MODE VOLTAGE (V) THD+N = 10% 2.5 0.5 COMMON-MODE VOLTAGE (V) OUTPUT POWER (W) 1.5 1 OUTPUT POWER (mW) RL = 4Ω f = 1kHz AV = 2 2.0 0 500 OUTPUT POWER (W) 2.5 100 MAX9718 toc19 0 6 0.0001 0.0001 0.001 OUTPUT POWER MAX9718/MAX9719 Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers 2.5 3.0 3.5 4.0 4.5 SUPPLY VOLTAGE (V) 5.0 5.5 1 10 LOAD RESISTANCE (Ω) _______________________________________________________________________________________ 100 Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers 400 300 THD+N = 1% 200 1.4 POWER DISSIPATION (W) THD+N = 10% VCC = 5V RL = 4Ω f = 1kHz AV = 2 1.6 1.0 MAX9718 toc23 VCC = 3V f = 1kHz AV = 2 POWER DISSIPATION (W) OUTPUT POWER (mW) 1.8 MAX9718 toc22 600 500 POWER DISSIPATION vs. OUTPUT POWER POWER DISSIPATION vs. OUTPUT POWER 1.2 1.0 0.8 0.6 0.4 100 MAX9718 toc24 OUTPUT POWER vs. LOAD RESISTANCE VCC = 5V RL = 8Ω f = 1kHz AV = 2 0.8 0.6 0.4 0.2 0.2 0 10 100 0.6 0.9 1.2 0 1.8 1.5 0.2 0.4 0.6 0.8 1.0 OUTPUT POWER (W) POWER DISSIPATION vs. OUTPUT POWER POWER DISSIPATION vs. OUTPUT POWER GAIN AND PHASE vs. FREQUENCY 300 200 250 200 150 100 AV = 60dB 120 90 GAIN/PHASE (°/dB) 400 VCC = 3V RL = 8Ω f = 1kHz AV = 2 300 150 MAX9718 toc26 350 1.4 1.2 MAX9718 toc27 OUTPUT POWER (W) POWER DISSIPATION (mW) 500 0.3 LOAD RESISTANCE (Ω) VCC = 3V RL = 4Ω f = 1kHz AV = 2 600 0 MAX9718 toc25 700 60 30 0 -30 -60 -90 100 50 0 -120 -150 0 300 400 500 600 700 0 100 OUTPUT POWER (mW) 200 300 0 VRIPPLE = 200mVP-P RL = 8Ω CBIAS = 1µF -20 1k 10k 100k FREQUENCY (Hz) OUTPUT POWER (mW) COMMON-MODE REJECTION RATIO vs. FREQUENCY POWER-SUPPLY REJECTION RATIO vs. FREQUENCY -10 100 10 500 400 0 MAX9718 toc29 200 VRIPPLE = 200mVP-P RL = 8Ω CBIAS = 1µF -10 -20 -30 -30 CMRR (dB) 100 MAX9718 toc28 0 PSRR (dB) POWER DISSIPATION (mW) 0 0 1 -40 -50 -60 -70 -40 -50 VCC = 5V -60 -70 VCC = 5V VCC = 3V -80 -80 -90 -90 VCC = 3V -100 10 100 1k FREQUENCY (Hz) 10k -100 100k 10 100 1k 10k 100k FREQUENCY (Hz) _______________________________________________________________________________________ 7 MAX9718/MAX9719 Typical Operating Characteristics (continued) (VCC = 5V, CBIAS = 0.1µF, THD+N measurement bandwidth = 22Hz to 22kHz, TA = +25°C, unless otherwise noted.) Typical Operating Characteristics (continued) (VCC = 5V, CBIAS = 0.1µF, THD+N measurement bandwidth = 22Hz to 22kHz, TA = +25°C, unless otherwise noted.) CROSSTALK vs. FREQUENCY CROSSTALK vs. FREQUENCY -60 -70 CHANNEL 2 -80 -90 -100 -110 -120 CHANNEL 1 10 100 1k 10k -20 -30 -40 -50 -60 -70 CHANNEL 2 -80 -90 -100 -110 -120 CHANNEL 1 10 100k MAX9718 toc31 VCC = 3V VRIPPLE = 200mVP-P RL = 8Ω CBIAS = 1µF -10 CROSSTALK (dB) VCC = 5V VRIPPLE = 200mVP-P RL = 8Ω, CBIAS = 1µF -20 -30 -40 -50 0 MAX9718 toc30 0 -10 CROSSTALK (dB) MAX9718/MAX9719 Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers 100 1k 10k 100k FREQUENCY (Hz) FREQUENCY (Hz) ENTERING SHUTDOWN EXITING SHUTDOWN MAX9718 toc32 CBIAS = 0.1µF VCC = 3V RL = 8Ω MAX9718 toc33 CBIAS = 0.1µF VCC = 3V RL = 8Ω SHDN 2V/div OUT+ 1V/div OUT+ 1V/div OUT1V/div OUT1V/div OUT+ - OUT200mV/div OUT+ - OUT200mV/div 100µs/div 4ms/div EXITING POWER-DOWN ENTERING POWER-DOWN MAX9718 toc35 MAX9718 toc34 CBIAS = 0.1µF VCC = 3V RL = 8Ω SHDN 2V/div OUT+ 1V/div SHDN 1V/div OUT+ 1V/div OUT1V/div OUT1V/div OUT+ - OUT200mV/div 100µs/div 8 SHDN 2V/div OUT+ - OUT200mV/div CBIAS = 0.1µF VCC = 3V RL = 8Ω 4ms/div _______________________________________________________________________________________ Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers SHUTDOWN CURRENT vs. TEMPERATURE VCC = 3V 3 2 MAX9718 toc37 0.02 0.01 0 VCC = 3V -0.01 -40 -15 10 35 60 50 40 VCC = 3V 30 10 0 -40 85 VCC = 5V 60 20 -0.03 0 TO -3dB OF FINAL VALUE 70 VCC = 5V -0.02 1 80 TURN-ON TIME (ms) 4 0.03 SHUTDOWN CURRENT (µA) VCC = 5V 5 SUPPLY CURRENT (mA) MAX9718 toc36 6 TURN-ON TIME vs. DC BIAS BYPASS CAPACITOR MAX9718 toc38 SUPPLY CURRENT vs. TEMPERATURE -15 10 35 60 85 0 0.20 TEMPERATURE (°C) TEMPERATURE (°C) 0.40 0.60 0.80 1.00 CBIAS (µF) Pin Description PIN MAX9718 MAX9719 FUNCTION NAME TDFN-EP/ µMAX UCSP TQFN-EP UCSP TSSOP-EP 1 C2 — — — SHDN — — 9 B3 11 SHDN 2 C1 — — — IN- Shutdown Input. The polarity of SHDN is dependent on the state of SHDM. Shutdown Input. Active-low shutdown input. Inverting Input — — — — — IN+ Shutdown-Mode Polarity Input. SHDM controls the polarity of SHDN. Connect SHDM high for an active-high SHDN input. Connect SHDM low for an active-low SHDN input (see Table 1). Noninverting Input 5 B2 7 BIAS DC Bias Bypass A3 — — — OUT- Bridge Amplifier Negative Output 7 B3 1, 6, 11 A2, C2, C4 3, 8, 13 GND Ground 8 — 13 — 15 N.C. No Connection. Not internally connected. 9 B1 8, 14 A4, D3 16, 10 VCC 10 C3 — — — OUT+ Power Supply Bridge Amplifier Positive Output 3 B2 — 4 A1 5 A2 6 SHDM — — 2 C1 4 INR+ Right-Channel Noninverting Input — — 3 B1 5 INL- Left-Channel Inverting Input — — 4 A1 6 INL+ Left-Channel Noninverting Input — — 7 A3 9 OUTL+ Left-Channel Bridge Amplifier Positive Output _______________________________________________________________________________________ 9 MAX9718/MAX9719 Typical Operating Characteristics (continued) (VCC = 5V, CBIAS = 0.1µF, THD+N measurement bandwidth = 22Hz to 22kHz, TA = +25°C, unless otherwise noted.) MAX9718/MAX9719 Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers Pin Description (continued) PIN TDFN-EP/ µMAX UCSP TQFN-EP UCSP NAME TSSOP-EP — — 10 B4 12 OUTL- Left-Channel Bridge Amplifier Negative Output — — 12 D4 14 OUTR+ Right-Channel Bridge Amplifier Positive Output — — 15 D2 1 OUTR- Right-Channel Bridge Amplifier Negative Output — — 16 D1 2 INR- — — — — — EP Detailed Description The MAX9718/MAX9719 are 1.4W BTL speaker amplifiers. The MAX9718 is a mono speaker amplifier, while the MAX9719 is a stereo speaker amplifier. Both devices feature a low-power shutdown mode, and industry-leading click-and-pop suppression. The MAX9718 features a two-input shutdown scheme to configure shutdown for active high or active low. These devices consist of high output-current audio amps configured as BTL amplifiers (see the Functional Diagrams). Both adjustable and fixed gain (0dB, 3dB, 6dB) versions are available. BIAS These devices operate from a single 2.7V to 5.5V supply and feature an internally generated, common-mode bias voltage of VCC / 2 referenced to ground. BIAS provides both click-and-pop suppression and sets the DC bias level for the audio outputs. Choose the value of the bypass capacitor as described in the BIAS Capacitor section. Do not connect external loads to BIAS as this can affect the overall performance. Shutdown Mode The MAX9718/MAX9719 feature a 100nA low-power shutdown mode that reduces quiescent current consumption. Entering shutdown disables the device’s bias circuitry, the amplifier outputs go high impedance, and BIAS is driven to GND. The MAX9718 SHDM input controls the polarity of SHDN. Drive SHDM high for an active-high SHDN input. Drive SHDM low for an activelow SHDN input (see Table 1). The MAX9719 features an active-low shutdown input, SHDN. Click-and-Pop Suppression The MAX9718/MAX9719 feature Maxim’s industry-leading click-and-pop suppression circuitry. During startup, the amplifier common-mode bias voltage ramps to the DC bias point. When entering shutdown, the amplifier outputs are high impedance to 100kΩ between both outputs. This scheme minimizes the energy present in the audio band. 10 FUNCTION Right-Channel Inverting Input Exposed Pad. Connect EP to GND. Table 1. Shutdown Mode Selection (MAX9718 Only) SHDM SHDN OPERATIONAL MODE 0 0 Shutdown 0 1 Normal operation 1 0 Normal operation 1 1 Shutdown Applications Information BTL Amplifier The MAX9718/MAX9719 are designed to drive a load differentially, a configuration referred to as bridge-tied load or BTL. The BTL configuration (Figure 1) offers advantages over the single-ended configuration, where one side of the load is connected to ground. Driving the load differentially doubles the output voltage compared to a single-ended amplifier under similar conditions. Substituting 2 x VOUT(P-P) for VOUT(P-P) into the following equations yields four times the output power due to doubling of the output voltage: VRMS = VOUT(P−P) 2 2 2 V POUT = RMS RL Since the differential outputs are biased at midsupply, there is no net DC voltage across the load. This eliminates the need for DC-blocking capacitors required for single-ended amplifiers. These capacitors can be large, expensive, consume board space, and degrade low-frequency performance. ______________________________________________________________________________________ Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers MAX9718/MAX9719 RF RF VOUT(P-P) +1 2 x VOUT(P-P) VOUT(P-P) -1 INVERTING DIFFERENTIAL INPUT RIN MAX9718A/H MAX9719A IN- (OPTIONAL) OUT+ BIAS GENERATOR Figure 1. Bridge-Tied Load Configuration Power Dissipation and Heat Sinking Under normal operating conditions, the MAX9718/ MAX9719 dissipate a significant amount of power. The maximum power dissipation for each package is given in the Absolute Maximum Ratings section under Continuous Power Dissipation or can be calculated by the following equation: TJ(MAX) − TA PD(MAX) = θJA where TJ(MAX) is +150°C, TA is the ambient temperature, and θJA is the reciprocal of the derating factor in °C/W as specified in the Absolute Maximum Ratings section. For example, θJA of the TQFN package is +59.2°C/W. The increase in power delivered by the BTL configuration directly results in an increase in internal power dissipation over the single-ended configuration. The maximum internal power dissipation for a given VCC and load is given by the following equation: PD(MAX) = 2VCC2 π 2RL If the internal power dissipation for a given application exceeds the maximum allowed for a given package, reduce power dissipation by increasing the ground plane heat-sinking capability and the size of the traces to the device (see the Layout and Grounding section). Other methods for reducing power dissipation are to reduce VCC, increase load impedance, decrease ambient temperature, reduce gain, or reduce input signal. Thermal-overload protection limits total power dissipation in the MAX9718/MAX9719. When the junction temperature exceeds +160°C, the thermal protection circuitry disables the amplifier output stage. The amplifiers are enabled once the junction temperature cools RIN NONINVERTING DIFFERENTIAL INPUT (OPTIONAL) OUT- IN+ Figure 2. Setting the MAX9718A/H/MAX9719A Gain by 15°C. A pulsing output under continuous thermal overload results as the device heats and cools. For optimum power dissipation and heat sinking, connect the exposed pad found on the µMAX, TDFN, TQFN, and TSSOP packages to a large ground plane. Fixed Differential Gain The MAX9718B/E, MAX9718C/F, MAX9718D/G, MAX9719B, MAX9719C, and MAX9719D feature internally fixed gains (see the Selector Guide). This simplifies design, decreases required footprint size, and eliminates external gain-setting resistors. Resistors R1 and R2 shown in the Functional Diagrams are used to achieve each fixed gain. Adjustable Differential Gain Gain-Setting Resistors External feedback resistors set the gain of the MAX9718A/H and MAX9719A. Resistors RF and RIN (Figure 2) set the gain of the amplifier as follows: R AV = F RIN where AV is the desired voltage gain. Hence, an RIN of 10kΩ and an RF of 20kΩ yields a gain of 2V/V, or 6dB. RF can be either fixed or variable, allowing the use of a digitally controlled potentiometer to alter the gain under software control. ______________________________________________________________________________________ 11 MAX9718/MAX9719 Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers Input Filter The fully differential amplifier inputs can be biased at voltages other than midsupply. The common-mode feedback circuit adjusts for input bias, ensuring the outputs are still biased at midsupply. Input capacitors are not required as long as the common-mode input voltage is within the specified range listed in the Electrical Characteristics table. If input capacitors are used, input capacitor CIN, in conjunction with R IN , forms a highpass filter that removes the DC bias from an incoming signal. The ACcoupling capacitor allows the amplifier to bias the signal to an optimum DC level. Assuming zero-source impedance, the -3dB point of the highpass filter is given by: 1 f −3dB = 2πRINCIN Setting f -3dB too high affects the low-frequency response of the amplifier. Use capacitors with dielectrics that have low-voltage coefficients, such as tantalum or aluminum electrolytic. Capacitors with highvoltage coefficients, such as ceramics, can increase distortion at low frequencies. BIAS Capacitor BIAS is the output of the internally generated VCC / 2 bias voltage. The BIAS bypass capacitor, C BIAS , improves PSRR and THD+N by reducing power supply and other noise sources at the common-mode bias node, and also generates the clickless/popless startup DC bias waveform for the speaker amplifiers. Bypass BIAS with a 0.1µF capacitor to GND. Larger values of C BIAS (up to 1µF) improve PSRR, but slow down tON/tOFF times. A 1µF CBIAS capacitor slows turn-on and turn-off times by 10 and improves PSRR by 20dB (at 1kHz). Do not connect external loads to BIAS. Supply Bypassing Proper power-supply bypassing ensures low-noise, low-distortion performance. Connect a 1µF ceramic capacitor from V CC to GND. Add additional bulk capacitance as required by the application. Locate the bypass capacitor as close to the device as possible. 12 Layout and Grounding Good PC board layout is essential for optimizing performance. Use large traces for the power-supply inputs and amplifier outputs to minimize losses due to parasitic trace resistance and route heat away from the device. Good grounding improves audio performance, minimizes crosstalk between channels, and prevents any digital switching noise from coupling into the audio signal. The MAX9718/MAX9719 TDFN, TQFN, TSSOP, and µMAX packages feature exposed thermal pads on their undersides. This pad lowers the thermal resistance of the package by providing a direct-heat conduction path from the die to the PC board. Connect the exposed pad to the ground plane using multiple vias, if required. UCSP Applications Information For the latest application details on UCSP construction, dimensions, tape carrier information, PC board techniques, bump-pad layout, and recommended reflow temperature profile, as well as the latest information on reliability testing results, refer to the Application Note 1891: Wafer-Level Packaging (WLP) and Its Applications. Selector Guide PART MONO STEREO GAIN (dB) SELECTABLE SHUTDOWN POLARITY MAX9718A/H √ — Adjustable √ MAX9718B/E √ — 0 √ MAX9718C/F √ — 3 √ MAX9718D/G √ — 6 √ MAX9719A — √ Adjustable — MAX9719B — √ 0 — MAX9719C — √ 3 — MAX9719D — √ 6 — ______________________________________________________________________________________ Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers PART MAX9718AEUB+ TEMP RANGE PINPACKAGE TOP MARK -40°C to +85°C 10 µMAX-EP* +AAAA PART TEMP RANGE MAX9718GEUB+ PINPACKAGE -40°C to +85°C 10 µMAX-EP* TOP MARK +AAAL MAX9718BEBL+TG45 -40°C to +85°C 3 x 3 UCSP +ADX MAX9718HEBL+TG45 -40°C to +85°C 3 x 3 UCSP +AFE MAX9718BETB+T -40°C to +85°C 10 TDFN-EP* +AAW MAX9718HETB+T -40°C to +85°C 10 TDFN-EP* +ATB MAX9718BEUB+ -40°C to +85°C 10 µMAX-EP* +AAAB MAX9718HEUB+ -40°C to +85°C 10 µMAX-EP* +AAAM MAX9718CEBL+TG45 -40°C to +85°C 3 x 3 UCSP +ADZ MAX9719AEBE+T -40°C to +85°C 4 x 4 UCSP — MAX9718CETB+T -40°C to +85°C 10 TDFN-EP* +AAX MAX9719AETE+ -40°C to +85°C 16 TQFN-EP* — MAX9718CEUB+ -40°C to +85°C 10 µMAX-EP* +AAAC MAX9719AEUE+ -40°C to +85°C 16 TSSOP-EP* — MAX9718DEBL+TG45 -40°C to +85°C 3 x 3 UCSP +AEA MAX9719BEBE+TG45 -40°C to +85°C 4 x 4 UCSP MAX9718DETB+T -40°C to +85°C 10 TDFN-EP* +AAY MAX9719BETE+ -40°C to +85°C 16 TQFN-EP* — MAX9718DEUB+ -40°C to +85°C 10 µMAX-EP* +AAAD MAX9719BEUE+ -40°C to +85°C 16 TSSOP-EP* — — MAX9718EEBL+TG45 -40°C to +85°C 3 x 3 UCSP +AFB MAX9719CEBE+TG45 -40°C to +85°C 4 x 4 UCSP MAX9718EETB+T -40°C to +85°C 10 TDFN-EP* +ASY MAX9719CETE+ -40°C to +85°C 16 TQFN-EP* — MAX9718EEUB+ -40°C to +85°C 10 µMAX-EP* +AAAJ MAX9719CEUE+ -40°C to +85°C 16 TSSOP-EP* — — MAX9718FEBL+TG45 -40°C to +85°C 3 x 3 UCSP +AFC MAX9719DEBE+TG45 -40°C to +85°C 4 x 4 UCSP MAX9718FETB+T -40°C to +85°C 10 TDFN-EP* +ASZ MAX9719DETE+ -40°C to +85°C 16 TQFN-EP* — MAX9718FEUB+ -40°C to +85°C 10 µMAX-EP* +AAAK MAX9719DEUE+ -40°C to +85°C 16 TSSOP-EP* — MAX9718GEBL+TG45 -40°C to +85°C 3 x 3 UCSP +AFD MAX9718GETB+T +ATA -40°C to +85°C 10 TDFN-EP* — +Denotes lead(Pb)-free/RoHS-compliant package. *EP = Exposed pad. G45 indicates protective die coating. UCSP Marking Information AAA XXX I: A1 Bump indicator AAA: Product code XXX: Lot code Chip Information MAX9718 TRANSISTOR COUNT: 2359 MAX9719 TRANSISTOR COUNT: 4447 PROCESS: BiCMOS ______________________________________________________________________________________ 13 MAX9718/MAX9719 Ordering Information (continued) MAX9718/MAX9719 Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers System Diagram 2.7V TO 5.5V 10µF 1µF VCC MAX9719 IN1+ INL+ OUTL+ IN1- INL- OUTL- IN2+ INR+ IN2- INR- OUTR+ OUTRGND BIAS SHDN 0.1µF 2.7V TO 5.5V IN- Q MAX961 Q 220kΩ VCC IN+ 0.1µF 0.1µF SHDN MAX9722B 1µF INL OUTL 1µF OUTR INR 2.7V TO 5.5V PVSS PVDD SVSS SVDD 1µF 0.1µF C1P CIN 1µF 1µF AUTOMATIC HEADPHONE DETECTION AND SPEAKER DISABLE CIRCUIT 14 ______________________________________________________________________________________ Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers 2.7V TO 5.5V SUPPLY VCC 1.0µF INVERTING DIFFERENTIAL INPUT NONINVERTING DIFFERENTIAL INPUT R2 CIN R1 IN- OUT+ (OPTIONAL) CIN R1 IN+ OUTR2 (OPTIONAL) BIAS CBIAS 0.1µF BIAS GENERATOR SHDN SHDM MAX9718B/E MAX9718C/F MAX9718D/G SHUTDOWN CONTROL GND RF RF 2.7V TO 5.5V SUPPLY VCC 1.0µF INVERTING DIFFERENTIAL INPUT NONINVERTING DIFFERENTIAL INPUT CIN RIN INOUT+ (OPTIONAL) CIN RIN IN+ (OPTIONAL) BIAS CBIAS 0.1µF MAX9718A AV = 2 fC = 1Hz CIN = 1µF RIN = 10kΩ RF = 20kΩ OUTBIAS GENERATOR MAX9718A/H SHDN SHDM SHUTDOWN CONTROL GND ______________________________________________________________________________________ 15 MAX9718/MAX9719 Functional Diagrams MAX9718/MAX9719 Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers Functional Diagrams (continued) 2.7V TO 5.5V SUPPLY VCC 1.0µF INVERTING DIFFERENTIAL INPUT NONINVERTING DIFFERENTIAL INPUT CIN OUTL+ (OPTIONAL) CIN R1 INL+ OUTLR2 (OPTIONAL) BIAS NONINVERTING DIFFERENTIAL INPUT R2 R1 INL- CBIAS 0.1µF INVERTING DIFFERENTIAL INPUT MAX9719B MAX9719C MAX9719D BIAS GENERATOR SHDN CIN SHUTDOWN CONTROL R2 R1 INR- OUTR+ (OPTIONAL) CIN R1 INR+ (OPTIONAL) OUTRR2 GND RF RF 2.7V TO 5.5V SUPPLY VCC MAX9719A 1.0µF INVERTING DIFFERENTIAL INPUT NONINVERTING DIFFERENTIAL INPUT CIN RIN INLOUTL+ (OPTIONAL) CIN RIN INL+ BIAS CBIAS 0.1µF INVERTING DIFFERENTIAL INPUT MAX9719A AV = 2 fC = 1Hz CIN = 1µF RIN = 10kΩ RF = 20kΩ 16 NONINVERTING DIFFERENTIAL INPUT OUTL- (OPTIONAL) CIN RIN BIAS GENERATOR SHDN SHUTDOWN CONTROL INROUTR+ (OPTIONAL) CIN (OPTIONAL) RIN INR+ OUTR- GND RF RF ______________________________________________________________________________________ Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers TOP VIEW TOP VIEW (BUMPS ON BOTTOM) SHDN 1 10 OUT+ IN- 2 9 VCC SHDM 3 8 N.C. IN+ 4 7 GND BIAS 5 6 OUT- MAX9718 MAX9718 3 1 2 A IN+ BIAS OUT- B VCC SHDM GND C IN- SHDN OUT+ µMAX 3 × 3 UCSP TOP VIEW TOP VIEW (BUMPS ON BOTTOM) SHDN 1 10 OUT+ IN- 2 9 VCC SHDM 3 IN+ 4 7 GND BIAS 5 6 OUT- 8 N.C. MAX9718 TDFN (3mm × 3mm × 0.8mm) MAX9719 4 1 2 3 A INL+ GND OUTL+ VCC B INL- BIAS SHDN OUTL- C INR+ GND D INR- OUTR- GND VCC OUTR+ N.C. VCC GND OUTL- SHDN TOP VIEW OUTR+ 4 × 4 UCSP 12 11 10 9 13 TOP VIEW 8 14 VCC 7 OUTL+ 6 GND MAX9719 1 2 3 4 INL+ 5 INL- 16 INR+ INR- 15 GND OUTR- BIAS OUTR- 1 16 VCC INR- 2 15 N.C. GND 3 14 OUTR+ INR+ 4 MAX9719 13 GND INL- 5 12 OUTL- INL+ 6 11 SHDN BIAS 7 10 VCC GND 8 9 OUTL+ TSSOP-EP TQFN (4mm × 4mm × 0.8mm) ______________________________________________________________________________________ 17 MAX9718/MAX9719 Pin Configurations Package Information For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE PACKAGE CODE DOCUMENT NO. 3 x 3 UCSP B9+1 21-0093 10 TDFN-EP T1033+1 21-0137 10 µMAX U10E+3 21-0109 4 x 4 UCSP B16+6 21-0101 16 TQFN-EP T1644+4 21-0139 16 TSSOP-EP U16E+3 21-0108 9LUCSP, 3x3.EPS MAX9718/MAX9719 Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers 18 ______________________________________________________________________________________ Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers ______________________________________________________________________________________ 19 MAX9718/MAX9719 Package Information (continued) For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. MAX9718/MAX9719 Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers Package Information (continued) For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. COMMON DIMENSIONS 20 PACKAGE VARIATIONS MIN. MAX. PKG. CODE N D2 E2 e JEDEC SPEC b A 0.70 0.80 T633-2 6 1.50±0.10 2.30±0.10 0.95 BSC MO229 / WEEA 0.40±0.05 1.90 REF D 2.90 3.10 T833-2 8 1.50±0.10 2.30±0.10 0.65 BSC MO229 / WEEC 0.30±0.05 1.95 REF SYMBOL [(N/2)-1] x e E 2.90 3.10 T833-3 8 1.50±0.10 2.30±0.10 0.65 BSC MO229 / WEEC 0.30±0.05 1.95 REF A1 0.00 0.05 T1033-1 10 1.50±0.10 2.30±0.10 0.50 BSC MO229 / WEED-3 0.25±0.05 2.00 REF L 0.20 0.40 T1033MK-1 10 1.50±0.10 2.30±0.10 0.50 BSC MO229 / WEED-3 0.25±0.05 2.00 REF k 0.25 MIN. T1033-2 10 1.50±0.10 2.30±0.10 0.50 BSC MO229 / WEED-3 0.25±0.05 2.00 REF A2 0.20 REF. T1433-1 14 1.70±0.10 2.30±0.10 0.40 BSC ---- 0.20±0.05 2.40 REF T1433-2 14 1.70±0.10 2.30±0.10 0.40 BSC ---- 0.20±0.05 2.40 REF T1433-3F 14 1.70±0.10 2.30±0.10 0.40 BSC ---- 0.20±0.05 2.40 REF ______________________________________________________________________________________ Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers 10L UMAX, EXPPADS.EPS 21-0109 D 1 1 ______________________________________________________________________________________ 21 MAX9718/MAX9719 Package Information (continued) For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. Package Information (continued) For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. 16L,UCSP.EPS MAX9718/MAX9719 Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers 22 ______________________________________________________________________________________ Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers 24L QFN THIN.EPS ______________________________________________________________________________________ 23 MAX9718/MAX9719 Package Information (continued) For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. MAX9718/MAX9719 Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers Package Information (continued) For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. 24 ______________________________________________________________________________________ Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers TSSOP 4.4mm BODY.EPS ______________________________________________________________________________________ 25 MAX9718/MAX9719 Package Information (continued) For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. MAX9718/MAX9719 Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers Revision History REVISION NUMBER REVISION DATE 5 2/08 Updated Pin Configurations. 6 3/09 Added lead-free and G45 options to Ordering Information 1, 13 7 4/10 Updated continuous power dissipation for 10-pin UCSP and µMAX packages and corrected error in the Pin Description section 2, 9 DESCRIPTION PAGES CHANGED 17 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 26 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2010 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.