HT82V73A 1500mW Audio Power Amp with Shutdown Features Applications • Operating voltage: 2.2V to 5.5V • Wide range of audio applications • High signal-to-noise ratio • Low distortion General Description • Large output voltage swing The HT82V73A is an integrated class AB mono speaker driver contained in an SOP 8-pin package. The device is capable of delivering 1500mW of output power into an 8Ω load with less than 10% (THD+N) distortion from a 5V power supply. When in the shutdown mode the very low standby current is an important feature for a wide range of battery powered audio applications. • Low power consumption • Output power 1500mW at 10% THD+N into 8Ω (VDD=5V) • Wide temperature operating range • Low power-on and chip enable or disable POP noise • Low standby current • Power off control • Can directly drive speakers • 8-pin SOP package Block Diagram Pin Assignment O U T N 1 A u d In 2 V R E F 3 V S S 4 8 V D D 7 O U T P 6 N C 5 C E G N D P A D Rev. 1.00 1 October 16, 2014 HT82V73A 1500mW Audio Power Amp with Shutdown Pin Description Pin No. Pin Name I/O 1 OUTN O Negative output Description 2 Aud In I Audio input 3 VREF O Speaker non-inverting input voltage reference 4 VSS — 5 CE I 6 NC — Not connected 7 OUTP O Positive output 8 VDD — Positive power supply Negative power supply, ground Chip enable, low active PCB Layout Consideration It is desirable to maximize the PCB cooper area connecting to GND/EPAD pin to achieve the best thermal performance, if the board space allowed, a ground plane is highly desirable. Absolute Maximum Ratings Supply Voltage.......................... VSS−0.3V to VSS+6.0V Input Voltage.............................VSS−0.3V to VDD+0.3V Storage Temperature........................... −50°C to 125°C Operating Temperature......................... −40°C to 85°C Note: These are stress ratings only. Stresses exceeding the range specified under ″Absolute Maximum Ratings″ may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability. Rev. 1.00 2 October 16, 2014 HT82V73A D.C. Characteristics Symbol VDD Parameter Supply Voltage Ta=25°C, VDD=5V, VSS=0V (unless otherwise noted) Test Conditions VDD Conditions — — 3V IDD Quiescent Power Supply Current ISD Shut-down Power Supply Current 5V VIH Input High Voltage for CE — VIL Input Low Voltage for CE — 5V Min. Typ. Max. 2.2 5.0 5.5 V 1 3 7 mA VIN=0V, No load 2 4 8 mA — — 1 µA — 0.7VDD — VDD V — 0 — 0.3VDD V — 600 — — 400 — — 250 — — 780 — — 550 — — 300 — — 1850 — — 1200 — — 700 — — 2350 — — 1500 — — 850 — VIN=0V, CE=VDD, No load RL=4Ω 3V PO Output Power (THD+N)/S<1%, RL=8Ω VIN=1kHz sinewave RL=16Ω RL=4Ω (THD+N)/S<10%, RL=8Ω VIN=1kHz sinewave RL=16Ω RL=4Ω 5V (THD+N)/S<1%, RL=8Ω VIN=1kHz sinewave RL=16Ω RL=4Ω (THD+N)/S<10%, RL=8Ω VIN=1kHz sinewave RL=16Ω A.C. Characteristics Symbol tWake (THD+N)/S S/N Parameter Wake-up Time Min. Conditions VDD mW Typ. Max. Unit CL=0.1µF — 100 — ms CL=1µF — 150 — ms CL=10µF — 175 — ms RL=4Ω — 0.5 — % RL=8Ω — 0.2 — % RL=16Ω — 0.17 — % RL=4Ω — 71 — dB 5V VO=1Vrms 1kHz sinewave RL=8Ω — 72.5 — dB — 73.5 — dB 5V RL=8Ω RL=16Ω Rev. 1.00 1.00 mW Ta=25°C, VDD=5V, VSS=0V (unless otherwise noted) Test Conditions Total Harmonic Distortion plus. Output power = 500mW, 5V Noise-to-signal Ratio VIN=1kHz sinewave Signal to Noise Ratio Unit 3 October 16, 2014 HT82V73A Functional Description For battery based applications, power consumption is a key issue, therefore the amplifier should be turned off when in the standby state. In order to eliminate any speaker sound bursts while turning the amplifier on, the application circuit, which will incorporate a capacitance value of C1, should be adjusted in accordance with the speaker′s audio frequency response. A greater value of C1 will improve the noise burst while turning on the amplifier. The recommended operation sequence is: OUTP Rising Time (tR) When CE is active low, the device requires a certain time before it can output its full power on the OUTP pin. This time is dependent upon the value of C1. (*see the application circuits) Turn On: "Aud In" signal standby (1/2VDD)→enable amplifier→wait t R for amplifier ready→"Aud In" signal start Turn Off: "Aud In" signal finish → disable amplifier → wait tR for amplifier off → "Aud In" signal off Capacitor tR Voltage 0.1µF 1µF 4.7µF 10µF 2.2V 15ms 30ms 90ms 185ms 3.0V 15ms 30ms 90ms 185ms 4.0V 15ms 30ms 90ms 185ms If the application is not powered by batteries and there is no problem with amplifier On/Off issue, a capacitor value of 0.1µF for C1 is recommended. THD+N vs. Output Power @ VDD=3V & 5V RLOAD=4Ω, VIN=1kHz sinewave VDD=3V Rev. 1.00 4 VDD=5V October 16, 2014 HT82V73A RLOAD=8Ω, VIN=1kHz sinewave VDD=3V VDD=5V RLOAD=16Ω, VIN=1kHz sinewave VDD=3V Rev. 1.00 5 VDD=5V October 16, 2014 HT82V73A Application Circuits Rev. 1.00 6 October 16, 2014 HT82V73A Package Information Note that the package information provided here is for consultation purposes only. As this information may be updated at regular intervals users are reminded to consult the Holtek website for the latest version of the package information. Additional supplementary information with regard to packaging is listed below. Click on the relevant section to be transferred to the relevant website page. • Further Package Information (include Outline Dimensions, Product Tape and Reel Specifications) • Packing Meterials Information • Carton information Rev. 1.00 7 October 16, 2014 HT82V73A 8-pin SOP (150mil) Outline Dimensions Symbol Dimensions in inch Min. Nom. A — 0.236 BSC — B — 0.154 BSC — Max. 0.020 C 0.012 — C′ — 0.193 BSC — D — — 0.069 E — 0.050 BSC — F 0.004 — 0.010 G 0.016 — 0.050 H 0.004 — 0.010 α 0° — 8° Symbol Rev. 1.00 Dimensions in mm Min. Nom. Max. A — 6.00 BSC — B — 3.90 BSC — C 0.31 — 0.51 C′ — 4.90 BSC — D — — 1.75 E — 1.27 BSC — F 0.10 — 0.25 G 0.40 — 1.27 H 0.10 — 0.25 α 0° — 8° 8 October 16, 2014 HT82V73A Copyright© 2014 by HOLTEK SEMICONDUCTOR INC. The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek assumes no responsibility arising from the use of the specifications described. The applications mentioned herein are used solely for the purpose of illustration and Holtek makes no warranty or representation that such applications will be suitable without further modification, nor recommends the use of its products for application that may present a risk to human life due to malfunction or otherwise. Holtek's products are not authorized for use as critical components in life support devices or systems. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information, please visit our web site at http://www.holtek.com.tw. Rev. 1.00 9 October 16, 2014