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車用音訊放大器

TAS6421-Q1

現行

具有負載突降的車用 75W、2MHz、單通道 4.5 至 26.4V 數位輸入 D 類音訊放大器

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產品規格表

TAS6421-Q1

現行
產品規格表 立即訂購

產品詳細資料

Output power (W) 75 Power stage supply (max) (V) 26.4 Power stage supply (min) (V) 4.5 Speaker channels (max) Mono Features thermal pad up Audio input type Digital Input Control interface I2C THD + N at 1 kHz (%) 0.02 Switching frequency (max) (Hz) 2100000 Output noise voltage (µV) 42 Sampling rate (max) (Hz) 96000 Rating Automotive Operating temperature range (°C) -40 to 125
Output power (W) 75 Power stage supply (max) (V) 26.4 Power stage supply (min) (V) 4.5 Speaker channels (max) Mono Features thermal pad up Audio input type Digital Input Control interface I2C THD + N at 1 kHz (%) 0.02 Switching frequency (max) (Hz) 2100000 Output noise voltage (µV) 42 Sampling rate (max) (Hz) 96000 Rating Automotive Operating temperature range (°C) -40 to 125
HSSOP (DKQ) 56 190.647 mm² 18.42 x 10.35
  • Advanced load diagnostics
    • DC Diagnostics run without input clocks
    • AC Diagnostic for tweeter detection with impedance and phase response
  • Easily meet CISPR25-L5 EMC specification
  • AEC-Q100 Qualified for automotive applications
    • Temperature grade: –40°C to +125°C
  • Audio inputs
    • I2S or 4/8-channel TDM input
    • Input sample rates: 44.1 kHz, 48 kHz, 96 kHz
    • Input formats: 16-bit to 32-Bit I2S, and TDM
  • Audio outputs
    • Single-channel bridge-tied load (BTL)
    • Up to 2.1 MHz output switching frequency
    • 27 W, 10% THD Into 4 Ω at 14.4 V BTL
    • 45 W, 10% THD Into 2 Ω at 14.4 V BTL
  • Audio performance Into 4 Ω at 14.4 V BTL
    • THD+N < 0.02% at 1 W
    • 42 µVRMS Output Noise
    • –90 dB Crosstalk
  • Load diagnostics with Host-independent operation
    • Output open and shorted load
    • Output-to-battery or ground shorts
    • Line output detection Up to 6 kΩ
  • Protection
    • Output current limiting and short protection
    • 40 V Load dump
    • Open ground and power tolerant
    • Overtemperature warning and shutdown
    • Undervoltage and overvoltage, DC Offset
  • General operation
    • 4.5 V to 26.4 V supply voltage
    • I2C control with 4 address options
    • Clip detection (latching or non-latching)
  • Advanced load diagnostics
    • DC Diagnostics run without input clocks
    • AC Diagnostic for tweeter detection with impedance and phase response
  • Easily meet CISPR25-L5 EMC specification
  • AEC-Q100 Qualified for automotive applications
    • Temperature grade: –40°C to +125°C
  • Audio inputs
    • I2S or 4/8-channel TDM input
    • Input sample rates: 44.1 kHz, 48 kHz, 96 kHz
    • Input formats: 16-bit to 32-Bit I2S, and TDM
  • Audio outputs
    • Single-channel bridge-tied load (BTL)
    • Up to 2.1 MHz output switching frequency
    • 27 W, 10% THD Into 4 Ω at 14.4 V BTL
    • 45 W, 10% THD Into 2 Ω at 14.4 V BTL
  • Audio performance Into 4 Ω at 14.4 V BTL
    • THD+N < 0.02% at 1 W
    • 42 µVRMS Output Noise
    • –90 dB Crosstalk
  • Load diagnostics with Host-independent operation
    • Output open and shorted load
    • Output-to-battery or ground shorts
    • Line output detection Up to 6 kΩ
  • Protection
    • Output current limiting and short protection
    • 40 V Load dump
    • Open ground and power tolerant
    • Overtemperature warning and shutdown
    • Undervoltage and overvoltage, DC Offset
  • General operation
    • 4.5 V to 26.4 V supply voltage
    • I2C control with 4 address options
    • Clip detection (latching or non-latching)

TAS6421-Q1 device is a mono-channel digital-input Class-D Burr-Brown™ audio amplifier that implements a 2.1 MHz PWM switching frequency enabling a cost-optimized solution for a very small PCB size, full operation down to 4.5 V for start/stop events, and exceptional sound quality with up to 40 kHz audio bandwidth. TAS6421-Q1 is footprint and pin-compatible with TAS642x-Q1 family devices to allow for the flexibility to easily support multiple system configurations with minimal redesign effort.

The output switching frequency can be set either above the AM band, which eliminates AM-band interferences and reduces output filtering and cost, or below the AM band to optimize efficiency. The device has a built-in load diagnostic function for detecting and diagnosing misconnected outputs as well as detection of AC-coupled tweeters.

TAS6421-Q1 provides one channel at 27 W into 4 Ω at 10% THD+N, 45 W into 2 Ω at 10% THD+N from a 14.4 V supply or 75 W into 4 Ω at 10% THD+N from a 25 V supply.

For pin compatible two- and four-channel devices see the TAS6422-Q1, TAS6424L-Q1, TAS6424M-Q1 and TAS6424-Q1.

TAS6421-Q1 device is a mono-channel digital-input Class-D Burr-Brown™ audio amplifier that implements a 2.1 MHz PWM switching frequency enabling a cost-optimized solution for a very small PCB size, full operation down to 4.5 V for start/stop events, and exceptional sound quality with up to 40 kHz audio bandwidth. TAS6421-Q1 is footprint and pin-compatible with TAS642x-Q1 family devices to allow for the flexibility to easily support multiple system configurations with minimal redesign effort.

The output switching frequency can be set either above the AM band, which eliminates AM-band interferences and reduces output filtering and cost, or below the AM band to optimize efficiency. The device has a built-in load diagnostic function for detecting and diagnosing misconnected outputs as well as detection of AC-coupled tweeters.

TAS6421-Q1 provides one channel at 27 W into 4 Ω at 10% THD+N, 45 W into 2 Ω at 10% THD+N from a 14.4 V supply or 75 W into 4 Ω at 10% THD+N from a 25 V supply.

For pin compatible two- and four-channel devices see the TAS6422-Q1, TAS6424L-Q1, TAS6424M-Q1 and TAS6424-Q1.
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* Data sheet TAS6421-Q1 75-W,​​​ 2-MHz Digital Input 1-Channel Automotive Class-D Burr-Brown™ Audio Amplifier with Load Dump Protection and I2C Diagnostics datasheet (Rev. A) PDF | HTML 2019年 10月 7日
Application brief Diagnostics and Protections in Automotive Audio Systems (Rev. A) 2019年 9月 24日
Technical article TI Burr-Brown™ technology: always on the edge of audio innovation PDF | HTML 2019年 9月 19日
Application note Inductor Selection Guide for 2.1 MHz Class-D Amplifiers (Rev. A) 2019年 9月 5日
White paper Audio Innovation: Trends in Automotive, Smart Home and Pro Audio Applications 2019年 8月 21日

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TAS6421Q1EVM — 具有 I2C 診斷功能的 TAS6421-Q1 2.1MHz 1 通道數位輸入 D 類音訊放大器評估模組

TAS6421-Q1 評估模組展示了業界首款 2.1MHz、單通道數位輸入 D 類音訊解決方案，適用於車載資訊娛樂應用。TAS6421-Q1 的 2.1-MHz 切換頻率可讓客戶能夠大幅減小電感器尺寸和成本，並將整體系統成本最佳化。本裝置提供一個通道，功率為 27W 時，阻抗為 4Ω，THD+N 為 10%，在 14.4V 電源電壓時，功率為 45W，阻抗為 2Ω，THD+N 為 10%，在 25V 電源電壓時，功率為 75W，阻抗為 4Ω，THD+N 為 10%。TAS6421-Q1 的 4.5-V 至 26-V (...)
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TAS6421 IBIS Model

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