TPA6404-Q1 Series

Automotive, 45-W, 2-MHz, 4-ch 4.5- to 18-V supply analog input Class-D audio amplifier w/ load dump

Catalog

Automotive, 45-W, 2-MHz, 4-ch 4.5- to 18-V supply analog input Class-D audio amplifier w/ load dump

Part	Type	Operating Temperature [Max]	Operating Temperature [Min]	Features	Grade	Supplier Device Package	Mounting Type	Qualification	Output Type	Max Output Power x Channels @ Load	Package / Case	Package / Case	Package / Case	Voltage - Supply [Max]	Voltage - Supply [Min]
Texas Instruments TPA6404QDKQRQ1	Class D	125 °C	-40 °C	I2C Mute Standby Thermal Protection	Automotive	56-HSSOP	Surface Mount	AEC-Q100	4-Channel (Quad)	4 85 W	7.5 mm	0.295 in	56-PowerBSSOP	18 V	4.5 V
Texas Instruments TPA6404QDKQQ1	Class D	125 °C	-40 °C	I2C Mute Standby Thermal Protection	Automotive	56-HSSOP	Surface Mount	AEC-Q100	4-Channel (Quad)	4 85 W	7.5 mm	0.295 in	56-PowerBSSOP	18 V	4.5 V

Catalog

Automotive, 45-W, 2-MHz, 4-ch 4.5- to 18-V supply analog input Class-D audio amplifier w/ load dump

Key Features

• Advanced load diagnosticsAC diagnostic for tweeter detection with impedance and phase responseIntegrated sine wave generatorEasy to meet CISPR25-L5 EMC specificationAEC-Q100 Qualified for automotive applications:Temperature Grade 1: –40°C to 125°C TADevice HBM ESD classification level: 3ADevice CDM ESD classification level: C4BAudio Inputs4 Channel differential analog inputFour I2C-controlled gain optionsHigh input impedance for low value AC-coupling capacitorAudio outputsFour-channel Bridge-tied load (BTL), with option of parallel BTL (PBTL)Up to 2.1 MHz Output switching frequency27 W, 10% THD into 4Ω at 14.4V45W, 10% THD into 2Ω at 14.4V85W, 10% THD into 1Ω at 14.4V PBTLAudio performance into 4Ω at 14.4V, 1kHzTHD+N < 0.01%42µVRMS Output noise- 90dB CrosstalkLoad DiagnosticsOutput open and shorted loadOutput-to-battery or ground shortsLine output detection up to 6kΩRuns without input clocksProtectionOutput current limitingOutput short protection40V Load dumpFortuitous Open ground and power tolerantDC OffsetOver temperatureUndervoltage and overvoltageGeneral operation4.5V to 18V supply voltageI2C Control With 4 Address OptionsClip Detection and Thermal FoldbackAdvanced load diagnosticsAC diagnostic for tweeter detection with impedance and phase responseIntegrated sine wave generatorEasy to meet CISPR25-L5 EMC specificationAEC-Q100 Qualified for automotive applications:Temperature Grade 1: –40°C to 125°C TADevice HBM ESD classification level: 3ADevice CDM ESD classification level: C4BAudio Inputs4 Channel differential analog inputFour I2C-controlled gain optionsHigh input impedance for low value AC-coupling capacitorAudio outputsFour-channel Bridge-tied load (BTL), with option of parallel BTL (PBTL)Up to 2.1 MHz Output switching frequency27 W, 10% THD into 4Ω at 14.4V45W, 10% THD into 2Ω at 14.4V85W, 10% THD into 1Ω at 14.4V PBTLAudio performance into 4Ω at 14.4V, 1kHzTHD+N < 0.01%42µVRMS Output noise- 90dB CrosstalkLoad DiagnosticsOutput open and shorted loadOutput-to-battery or ground shortsLine output detection up to 6kΩRuns without input clocksProtectionOutput current limitingOutput short protection40V Load dumpFortuitous Open ground and power tolerantDC OffsetOver temperatureUndervoltage and overvoltageGeneral operation4.5V to 18V supply voltageI2C Control With 4 Address OptionsClip Detection and Thermal Foldback

Description

The TPA6404-Q1 device is a four-channel analog-input Class-D audio amplifier that implements a 2.1MHz PWM switching frequency that enables a cost optimized solution in a very small 4.5cm2 PCB size, full operation down to 4.5V for start/stop events, and exceptional sound quality with up to 100kHz audio bandwidth. The TPA6404-Q1 Class-D audio amplifier has an optimal design for use in entry level automotive head units that provide analog audio input signals as part of their system design. The Class-D topology dramatically improves efficiency over traditional linear amplifier solutions. The output switching frequency operates above the AM band, which eliminates the AM band interference and reduces the output filter size and cost. The device is offered in a 56 pin HSSOP package with the exposed thermal pad up. The TPA6404-Q1 device is a four-channel analog-input Class-D audio amplifier that implements a 2.1MHz PWM switching frequency that enables a cost optimized solution in a very small 4.5cm2 PCB size, full operation down to 4.5V for start/stop events, and exceptional sound quality with up to 100kHz audio bandwidth. The TPA6404-Q1 Class-D audio amplifier has an optimal design for use in entry level automotive head units that provide analog audio input signals as part of their system design. The Class-D topology dramatically improves efficiency over traditional linear amplifier solutions. The output switching frequency operates above the AM band, which eliminates the AM band interference and reduces the output filter size and cost. The device is offered in a 56 pin HSSOP package with the exposed thermal pad up.