TDA7801

Digital input (I2S), quad BTL output power amplifier with full I2C diagnostics

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The TDA7801 is a new BCD technology quad bridge amplifier for car audio applications.

Thanks to the BCD6 technology it is possible to integrate a high performance D/A converter together with powerful MOSFET outputs.

The possibility of having the D/A conversion on board allows the performance to reach an outstanding 115 dB S/N ratio with more than 105 dB of dynamic range.

This device is equipped with a full diagnostics array that communicates the status of each speaker through the I²C bus. The possibility to control the configuration and behavior of the device by means of the I²C bus makes TDA7801 a very flexible machine.

Key Features

Integrated 110 dB D/A conversion
I²S digital input (3.3/1.8 V) with TDM option
Selectable input sampling frequency: 44.1 kHz, 48 kHz, 96 kHz, 192 kHz
MOSFET power outputs
High output power capability 4x28 W/ 4 Ω @ 14.4 V, 1 kHz, 10 % THD
Max. output power 4x72 W/2 Ω
Full I²C bus driving (3.3/5 V):
- Independent front/rear soft play/ mute
- Selectable gain (four levels) for very low noise line-out function
- I²C bus digital diagnostics (including DC and AC load detection)
Two I²C bus addresses and 8-ch TDM mode (only in PowerSO package)
Optional non I²C bus mode
Offset detector (play or mute mode)
Clipping detector (selectable level) and diagnostics pin
CMOS compatible enable pin (3.3/5 V)
Full fault protection
Four independent short circuit protections
Linear thermal protection (four thermal warnings)
ESD protection

Resources

Technical Documentation

Product Specifications

	Description	Version	Size
	DS8838: Digital input quad power amplifier with built-in diagnostics features	4.1	1 MB

Publications and Collaterals

Flyers

Description	Version	Size
Intelligent analog power amplifiers	1.0	837 KB
Intelligent analog power amplifiers	1.0	715 KB
TDA7801: Digital-input car-audio power amplifier	2.1	197 KB

Selection Guides

	Description	Version	Size
	Power amplifiers and voltage regulators		750 KB

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Sample & Buy

Part Number	Marketing Status	Quantity	Unit Price (US$) *	Package	Packing Type	ECCN (US)	Country of Origin	More info	Order from ST	Order from Distributors
TDA7801PD	Active : Product is in volume production	1000	6.3	PowerSO 36	Tube	EAR99	MALAYSIA	MORE INFO		No availability reported, please contact our Sales office
TDA7801SMTR	Target : Product is in design feasibility stage. No commitment taken to produce	-	-	OUTLINE FW 27 SMD	Tape And Reel	EAR99	-	MORE INFO		No availability reported, please contact our Sales office
TDA7801PDTR	Active : Product is in volume production	1000	6.3	PowerSO 36	Tape And Reel	EAR99	MALAYSIA	MORE INFO		No availability reported, please contact our Sales office
TDA7801	Active : Product is in volume production	1000	5.7	FLEXIWATT FM2 27	Tube	EAR99	CHINA	MORE INFO	Buy Direct Add to cart	DISTRIBUTOR AVAILABILITY

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors

Quality & Reliability

Part Number	Marketing Status	Package	Grade	RoHS Compliance Grade
TDA7801PD	Active	PowerSO 36	Automotive	Ecopack2
TDA7801SMTR	Target	OUTLINE FW 27 SMD	Automotive	Ecopack2
TDA7801PDTR	Active	PowerSO 36	Automotive	Ecopack2
TDA7801	Active	FLEXIWATT FM2 27	Automotive	Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.