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WT8871 voice power amplifier IC

Product features:

★ No interference to FM, high efficiency, excellent sound quality

★ High output power (THD ＋ N<10%, 1KHz frequency):

★ ESOP package is 5W (2 Ω load) and 3.5W (3 Ω load), 3W (4 Ω load)

★ Low leakage current in power down mode

★ Encapsulated by ESOP

Scope of application:

Time to market: two thousand and twenty-four - 08 - twenty-six

Product description:

Voice chip overview: WT8871 is an FM interference free, AB/D optional power amplifier. When the working voltage is 5V, the maximum driving power is 5W (2 Ω, BTL load, THD10%). The application circuit of WT8871 is simple, requiring only a few peripheral devices and integrated feedback resistance; No external coupling capacitor or bootstrap capacitor and buffer network are required for output. The WT8871 adopts ESOP packaging, which is particularly suitable for portable systems with low volume and low weight. Sleep mode can be entered through control to reduce power consumption. WT8871 voice chip has an overheating automatic shutdown protection mechanism; Stable operation, gain bandwidth product up to 2.5 MHz, and stable unit gain. The built-in feedback resistor can adjust the voltage gain and the best sound quality effect of the amplifier by configuring peripheral parameters, which is convenient for application. It is the perfect solution for your USB subwoofer and loudspeaker. Characteristic parameters: ① no interference to FM, high efficiency, excellent sound quality; ② High output power (THD ＋ N ③ stable unit gain; ④ sleep current (turn off current): less than 2uA; ⑤ Encapsulated by ESOP8; ⑥ "POP" sound resistance generated at the beginning and end of power on, power off, music playing; ⑦ Wide working voltage range: 2.0-5.0V; Reference for power amplifier chip selection: voice chip pin diagram and pin description: principle block diagram: application scenario: 1. laptop 2. desktop 3. low-voltage audio system, USB, 2.1/2.0 multimedia audio, etc

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Voice chip summary:

WT8871 is an FM interference free, Class AB/Class D optional power amplifier. When the working voltage is 5V, the maximum driving power is 5W (2 Ω, BTL load, THD>10%). The application circuit of WT8871 is simple, requiring only a few peripheral devices and integrated feedback resistors; No external coupling capacitor or bootstrap capacitor and buffer network are required for output. The WT8871 adopts ESOP packaging, which is particularly suitable for portable systems with low volume and low weight. Sleep mode can be entered through control to reduce power consumption. WT8871 voice chip There is an overheating automatic shutdown protection mechanism inside; Stable operation, gain bandwidth product up to 2.5 MHz, and stable unit gain. The built-in feedback resistor can adjust the voltage gain and the best sound quality effect of the amplifier by configuring peripheral parameters, which is convenient for application. It is the perfect solution for your USB subwoofer and loudspeaker.

Characteristic parameters:

① No interference to FM, high efficiency, excellent sound quality;

② High output power (THD ＋ N<10%, 1KHz frequency): 5W (2 Ω load), 3.5W (3 Ω load), 3W (4 Ω load);

③ Unit gain stability;

④ Sleep current (turn off current): less than 2uA;

⑤ ESOP8 packaging is adopted;

⑥ "POP" sound resistance generated at the beginning and end of power on, power off, music playing;

⑦ Wide working voltage range: 2.0-5.0V;

Reference for power amplifier chip selection:

WT8871 voice power amplifier IC

Voice chip Pin diagram and pin description:

WT8871 voice power amplifier IC

Principle block diagram:

WT8871

Application scenario:

1. Laptop

2. Desktop computer

3. Low voltage audio system, USB, 2.1/2.0 multimedia audio, etc

WT1312 audio power amplifier IC

Published: two thousand and twenty-one - 08 - twenty-eight

Product introduction: WT1312 is a mono PWM audio power amplifier. At 5V power supply, 1KHz sound source with 4 Ω speaker can output 2.3W. WT1312 has built-in overheat protection, which effectively protects the chip from damage under abnormal working conditions. WT1312 provides slim SOT23-6 packaging form for customers to choose, which can save considerable PCB area for customers. Its rated operating temperature range is - 20 ℃ to 50 ℃. Characteristic parameters: ① Low on resistance: 0.58ohm; ② Low standby current: less than 3uA; ③ Input signal frequency: 1-65KHz; ④ Output peak current: 2A; ⑤ SOT23-6 packaging; ⑥ Overtemperature protection with hysteresis (OTSD); ⑦ Wide working voltage range: 1.8-6V; Power amplifier voice chip selection table: pin introduction: application circuit: application range: bluetooth audio, smart home appliances, alarm, temperature measurement products, medical equipment, shared charging bank, shared bicycles, electronic locks, intelligent crutches, consumer electronics, ticket gates, charging posts

WT8623 Mono Class D Power Amplifier Chip

Published: two thousand and twenty-one - 08 - twenty-eight

Product introduction: WT8623 is a mono channel high-efficiency class D audio power amplifier. At 15V power supply, 1KHz sound source with 3 Ω speaker can output 35W; Advanced EMI suppression technology makes it possible to meet EMC requirements by using low-cost ferrite bead filter at the output port. WT8623 has built-in overcurrent protection, short circuit protection and overheat protection, which can effectively protect the chip from being damaged under abnormal working conditions. In the case of a single side PCB, the WT8623 power supply voltage is within 9V to drive speakers with a load as low as 2 Ω, and can provide up to 18W of continuous power; In the case of double-sided PCB, the power supply voltage of 15V driving 4 Ω load can provide 30W continuous power. The WT8623 has an efficiency of up to 92%, which eliminates the need for additional radiators when playing music. WT8623 provides a slim ESOP16 packaging form for customers to choose, which can save considerable PCB area for customers. Its rated operating temperature range is - 40 ℃ to 85 ℃. Characteristic parameters: ① four stage gain is adjustable; ② Fast startup time (100ms); ③ The efficiency is up to 92%, without heat sink; ④ Filter free function; ⑤ Encapsulated by ESOP16; ⑥ Temperature protection for short circuit protection and automatic recovery function; ⑦ Wide working voltage range: 5.7-17V; Power amplifier chip selection table: WT8623 power amplifier module instructions: 1 The SPK+and SPK pins are the audio output pins of the module, which are externally connected with speakers, and can be externally connected with 4 Ω 30W speakers 2 VDD and GND pins are the power supply pins of the module, and the power supply range is 5.7-17V3 The EN pin is the enable pin of the power amplifier, the EN pin is the high level, and the power amplifier chip works; When the EN pin is at low power level, the power amplifier voice chip does not work 4 The GND pin of the fifth pin is a common ground pin, which can be used for the common ground between the power amplifier module and the voice module. If the power supply of the power amplifier module and the voice module is the same, it can not be connected to 5 The DAC pin is an audio input pin, and the audio signal is input to the power amplifier chip through the DAC pin. Typical application diagram and description: pin introduction: application range: 1) LCD 2) TV 3) home audio system

WT8673 stereo power amplifier IC

Published: two thousand and twenty-one - 08 - twenty-eight

Overview of voice chip: WT8673 is a stereo efficient Class D power amplifier chip with single and dual channel functions; In the case of mono channel use, when 24V sound source 1KHz sine wave is supplied, the maximum output can be 82W; In the case of dual channel use, when the 24V sound source is powered by 1KHz sine wave, the maximum output can be 2 × 42W. Advanced EMI suppression technology makes it possible to meet EMC requirements by using low-cost ferrite bead filter at the output port. WT8673 audio power amplifier is designed for the system that needs to output high-quality audio power. It uses surface mount technology, and only a few peripheral devices are needed to enable the system to have high-quality audio output power. WT8673 has built-in overcurrent protection, short circuit protection and overheat protection. The effective protection chip will not be damaged under abnormal working conditions. The WT8673 has an efficiency of up to 92%, which eliminates the need for additional radiators when playing music. WT8673 provides customers with a slim ESOP16 packaging form to choose from, which can save considerable PCB area for customers. Its rated operating temperature range is - 40C to 85C. Characteristic parameters: ① fixed 24 times gain, integrated 15K input resistor, 360K feedback resistor; ② Fast startup time: 100mS (12V power supply; ③ efficiency up to 92%, no heat sink required; ④ filter free function; ⑤ ESOP16 packaging; ⑥ temperature protection for short circuit protection and automatic recovery function; ⑦ wide operating voltage range: 5-26V; ⑧ spread spectrum function; power amplifier chip selection reference: WT8673 power amplifier voice chip single channel power amplifier instructions 1 The SPK+and SPK pins are the audio output pins of the module. The external speakers can be connected to the 4 Ω 80W speakers 2, VDD (5-26V) and GND pins as the power supply pins of the module. The power supply range is 5-26V3. The EN pin is the enable pin of the power amplifier. The EN pin is the high level, and the power amplifier chip works; The EN pin is low level, and the power amplifier chip does not work. 4. The GND pin of the sixth pin is a common ground pin, which can be used for common grounding between the power amplifier module and the voice module. If the power supply of the power amplifier module and the voice module is the same, it can not be connected. 5. The DAC pin is an audio input pin, and the audio signal is input to the power amplifier chip pin through the DAC pin. Introduction: Application scope: 1) LCD 2) TV 3)

WT8871 voice power amplifier IC

Published: two thousand and twenty-one - 08 - twenty-eight

WT8002 audio power amplifier chip

Published: two thousand and twenty-one - 08 - nineteen

Product introduction: WT8002 is a class AB mono bridge audio power amplifier, with 5V working voltage, 1KHz audio, and maximum driving power of 3W with 3 Ω speaker load; The maximum driving power is 2W with 4 Ω horn load and 1.5W with 8 Ω horn load. The application circuit of WT8002 is simple, only a few peripheral devices are needed, and the output does not need external coupling capacitance or lift capacitance and buffer network. The WT8002 is packaged in SOP8, which is particularly suitable for portable systems with low volume and low weight. The power consumption can be reduced by controlling the SD pin to enter the sleep mode. The WT8002 feedback resistor for gain adjustment is external. The voltage gain and the best sound quality of the amplifier can be adjusted by configuring peripheral parameters, which is convenient for application. It is the perfect solution for your USB subwoofer and loudspeaker. Characteristic parameters: ① Wide operating voltage range: 2.2-5.5V; ② High output power (THD ＋ N ③ external gain adjustable; ④ sleep current (turn off current): less than 1uA; ⑤ SOP8 packaging; ⑥ "POP" sound resistance generated at the beginning and end of power on, power off, music playing; Power amplifier chip selection table: pin introduction: application range: ① portable consumer electronic products ② toys (including game machines, strollers, etc.) ③ low-voltage audio series, USB2.0/2.1 multimedia audio

WT8509 mono audio amplifier IC

Published: two thousand and twenty-one - 08 - nineteen

Product introduction: WT8509 is a high-efficiency, ultra-low EMI, AB/D mode switchable mono audio amplifier. When the power supply voltage is 8.5V, the audio frequency is 1KHz and the load is 4 Ω, it can output 8W (working in class AB)/8.5W (working in class D) power. In class D mode, the PWM modulation structure of WT8509 without filter reduces the external components, PCB area and system cost, and also simplifies the design. The efficiency of Class D mode is up to 90%. The fast startup time and small package size make the WT8509 the most suitable audio power amplifier for dual lithium batteries in the case of series power supply; WT8509 has built-in overcurrent protection, short circuit protection and overheat protection, which can effectively protect the chip from being damaged under abnormal working conditions. WT8509 provides a slim ESOP8 package type for customers to choose, and its rated operating temperature range is - 40 ° C to 85 ° C. Characteristic parameters: ① class-D structure without filtering; ② Fast startup time (200ms); ③ High PSRR: - 80dB at 217Hz; ④ Sleep current (turn off current): less than 0.1uA; ⑤ Encapsulated by ESOP8; ⑥ Over current protection, short circuit protection and overheat protection; ⑦ Wide working voltage range: 2.5-9.2V; Model selection reference: pin introduction: application scenario: ① laptop ② multimedia speaker ③ loudspeaker

WT8302 Class D audio power amplifier

Published: two thousand and twenty-one - 08 - 09

Product introduction: WT8302 is a high-efficiency, ultra-low EMI mono Class D audio amplifier; 2.9W with 4 Ω speakers under 5V power supply. The PWM modulation structure of WT8302 without filter reduces the external components, PCB area and system cost, and also simplifies the design. Up to 90% efficiency, fast start time and small package size make WT8302 the best choice for small handheld devices and PDAs, and its rated operating temperature range is - 40C to 85 ° C. WT8302 has the ability to suppress RF noise and eliminates the BYPASS capacitor of traditional audio power amplifiers; With AERC technology, it can provide excellent full bandwidth EMI suppression capability. Without any auxiliary design, it still has more than 20dB margin under FCC Part15 Class B standard, especially suitable for applications vulnerable to EMI interference such as FM, CMMB, mobile analog TV, etc. WT8302 has built-in overcurrent protection, short circuit protection and overheat protection, which can effectively protect the chip from being damaged under abnormal working conditions. Characteristic parameters: ① The original AERC technology provides excellent full bandwidth EM suppression capability; ② High PSR: - 80dB at 217Hz; ③ Fast startup time: 40mS; ④ Sleep current (turn off current): less than 0.1uA; ⑤ Over current protection, short circuit protection and overheat protection; ⑥ "POP" sound resistance generated at the beginning and end of power on, power off, music playing; ⑦ Wide working voltage range: 2.5-6.0V; Introduction to power amplifier chip selection pins: functional block diagram: typical application diagram: application range: ① USB speakers, portable speakers ② PMP, MP4, MP5 players ③ other low-voltage audio series

WT4890 audio power amplifier IC

Published: two thousand and twenty - eleven - ten

Product introduction: WT4890 is a high-quality AB class power amplifier voice chip, which has the performance of overheating protection, unit gain stability and ultra strong noise suppression; When powered by 5V power supply, the maximum driving power is 1W (8 ohm horn, BTL load), and the total harmonic distortion noise within the audio range is less than 1% (20Hz~20KHz). The WT4890 audio power amplifier is mainly designed for demanding applications of mobile phones and other portable communication devices. It can provide 0.5W continuous average power, and can be configured with a 5V 500mA adapter. The application circuit of WT4890 is simple and only requires a small amount of external components. The output does not need to be connected with coupling capacitor or bootstrap capacitor. The MSOP8 package is adopted, and the low power consumption shutdown mode is set. It is realized by driving the shutdown pin SD (SHUTDOWN) (logic low shutdown power amplifier) with a sleep current less than 0.1uA. Therefore, it is very suitable for mobile phones and other low-voltage applications, where the minimum power consumption is a major requirement. The WT4890 enters the sleep mode by driving the shutdown pin SD (SHUTDOWN) to reduce power consumption. More importantly, the WT voice chip BUSY (also can be the IO port of the customer's MCU) can be used to control the power amplifier on and off in combination with the appropriate voice duration to eliminate the "POP" sound generated by power on, power off, playing the beginning of music and playing the end of music. WT4890 has stable unit gain, and can adjust the voltage gain by configuring the ratio of external feedback resistance to input resistance, which is convenient for application. Characteristic parameters: ① High power supply voltage rejection ratio (PSRR), 70dB at 217Hz and 1KHz; ② Noise and harmonic distortion (THD+N), less than 1% (5V, 8 ohm 1W); ③ High output power (THD+N ④ Sleep current (turn off current): less than 0.1uA; ⑤ MSOP8 packaging; ⑥ "POP" sound resistance generated at the beginning and end of power on, power off, music playing; ⑦ Wide working voltage range: 2.2-5.5V; Power amplifier chip selection table: application schematic diagram: chip pin diagram and packaging pin correspondence table: purpose: Bluetooth audio, smart home appliances, alarm, temperature measurement products, medical equipment, shared charging bank, shared bicycles, electronic locks, smart crutches, consumer electronics, ticket gates, charging posts

WT9110B Class D audio power amplifier chip

Published: two thousand and twenty-three - 04 - twenty

Product introduction: WT9110B is a class D audio power amplifier with a 4 Ω speaker load that can output up to 28W under 14.5V power supply and 1KHz audio frequency. WT9110B has a working voltage of 6-14.5V and a differential input structure, which has a good suppression effect on noise interference. The class D mode control and turn off control of the WT9110B are integrated on one pin, which can greatly save IO ports by controlling the open and close free switching of the chip through one pin, and can provide an efficiency higher than 90% in the class D amplifier mode. The new filter free structure can eliminate the output low-pass filter of the traditional class D amplifier, WT9110B adopts ESOP-8 packaging, and has over temperature and short circuit protection functions. The WT9110B feedback resistor is built in, and the voltage gain and the best sound quality of the amplifier can be adjusted by configuring peripheral parameters, which is convenient for application. Characteristic parameters: ① Input voltage range 6V-14.5V ② Class D amplifier without filtering, low static current and low EMI ③ FM mode without interference, ultra-low bottom noise and ultra-low distortion; ④ 10% THD+N, 1KHz, VDD=12V, 4 Ω+33UH load to provide up to 20W output power; ⑤ 10% THD+N, 1KHz, VDD=14.5V, providing up to 28W output power under 4 Ω+33UH load; ⑥ "POP" sound resistance generated at the beginning and end of power on, power off, music playing; ⑦ Over temperature protection and short circuit protection; Audio power amplifier selection recommendation: pin introduction: typical application circuit: application scenario: 1. Bluetooth speaker, smart speaker 2. Navigator, portable game console, loudspeaker 3. Rod speaker, DVD, smart home 4. Various 6-14.5V power supply audio products

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WT8002 audio power amplifier chip

two thousand and twenty-one - 08 - nineteen

Product introduction: WT8002 is a class AB mono bridge audio power amplifier, with 5V working voltage, 1KHz audio, and maximum driving power of 3W with 3 Ω speaker load; The maximum driving power is 2W with 4 Ω horn load and 1.5W with 8 Ω horn load. The application circuit of WT8002 is simple, only a few peripheral devices are needed, and the output does not need external coupling capacitors or lift up capacitors and buffer networks. The WT8002 is packaged in SOP8, which is particularly suitable for portable systems with low volume and low weight. The power consumption can be reduced by controlling the SD pin to enter the sleep mode. The WT8002 feedback resistor for gain adjustment is external. The voltage gain and the best sound quality of the amplifier can be adjusted by configuring peripheral parameters, which is convenient for application. It is the perfect solution for your USB subwoofer and loudspeaker. Characteristic parameters: ① Wide operating voltage range: 2.2-5.5V; ② High output power (THD ＋ N ③ external gain adjustable; ④ sleep current (turn off current): less than 1uA; ⑤ SOP8 packaging; ⑥ "POP" sound resistance generated at the beginning and end of power on, power off, music playing; Power amplifier chip selection table: pin introduction: application scope: ①

WT8509 mono audio amplifier IC

two thousand and twenty-one - 08 - nineteen

WT8302 Class D audio power amplifier

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WT4890 audio power amplifier IC

two thousand and twenty - eleven - ten