TDA7901

Active

High efficiency digital input automotive quad power amplifier with built-in diagnostics features, Class-G integrated, "start stop" compatible

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Product overview

Description

The TDA7901 is a single-chip quad-bridge amplifier in advanced BCD technology integrating: a full D/A converter, digital input for direct connection to I2S (or TDM) and powerful MOSFET output stages.

The integrated D/A converter allows the performance to reach an outstanding 117 dB S/N ratio with more than 117 dB of dynamic range. Moreover the TDA7901 integrates an innovative high efficiency concept, optimized also for uncorrelated music signals. The device implements class G operation mode.

Thanks to this concept, the dissipated “output power” under average listening conditions can be reduced more than the standard class AB devices. The TDA7901 also integrates a programmable PLL that is able to lock at the input frequencies of 64*Fs for all the input configurations.

The device is equipped with a full and advanced diagnostics array that communicates the status of each speaker through the I2C bus. DIM (Digital-Impedance-Meter) function allows to measure the value of the load. The same I2C bus allows to control several configurations of the device.

The TDA7901 is able to play music down to 4.5 V supply voltage thus it is compatible with the so-called 'start stop' battery profile. Several car makers adopt 'Start stop' feature to reduce the fuel consumption and the impact over the environment.

Moreover, TDA7901 guarantees EMI outstanding performance, in line with the CISPR25-restrictive standard requirement.

  • All features

    • AEC-Q100 qualification ongoing
    • 24-bit resolution
    • High Resolution Bandwidth support:
      • Up to 40 kHz (I2S 96 kHz) with attenuation [0 dB, -2 dB]
      • Up to 80 kHz (I2S 192 kHz) with attenuation [0 dB, -2 dB]
    • 117 dB dynamic range (A-weighted)
    • Real-time load current monitoring
    • Voltage monitoring feature on I2C
    • High Efficiency SB-I (SB-Improved) and Class-G operation
    • 1 Ω driving capability
    • High output power capability:
      • 4 x 27 W 4Ω@ 14.4 V, 1 kHz, THD = 10 %
      • 4 x 47 W 2Ω@ 14.4 V, 1 kHz, THD = 10 %
    • Flexible mode control:
      • Full I2C bus driving (1.8 V/3.3 V) with eight addresses selectable
      • Independent front/rear play/mute
      • Selectable digital gains
      • Very low noise
      • Digital diagnostic with DC and AC load Detections
      • Digital diagnostic with OL and OD in play
      • Current Offset Detection
    • EMI compliance evaluated following normative CISPR25
    • Start-stop compatibility (operation down to 4.5 V)
    • Sample rates: 44.1 kHz, 48 kHz, 96 kHz, 192 kHz
    • Flexible serial data port (1.8 V/3.3 V):
      • I2S standard, TDM 4Ch, TDM 8Ch, TDM 16Ch
    • Output Voltage Offset Detector
    • Independent front/rear clipping detector
    • Programmable diagnostic pin
    • CMOS compatible enable pin
    • Thermal protection
    • Pop free in mute to play transitions and vice versa

The current status of a product:
Active: Product is in volume production
Evaluation: Product is under characterization. Limited Engineering samples available
Preview: Product is in design stage
Target: Product is in design feasibility stage.No commitment taken to produce
Proposal: Marketing proposal for customer feedback.No commitment taken to design or produce
NRND: Not Recommended for New Design.Product is in volume production only to support customers ongoing production.
Marketing description of the package type.Compliancy of the device with industry requirement domains (IRD)The RoHS status of a product:
ECOPACK 1: Initial grade to identify European RoHS compliant products.
ECOPACK 2: New grade to identify brominated chlorinated and antimony oxide flame retardant free products.
ECOPACK 3: Halogen free RoHS exemptions free products.
(*): ECOPACK 2 version available upon request.
(**): Some versions still existing in ECOPACK 1 or not compliant.
The current status of a product:
Active: Product is in volume production
Evaluation: Product is under characterization. Limited Engineering samples available
Preview: Product is in design stage
Target: Product is in design feasibility stage.No commitment taken to produce
Proposal: Marketing proposal for customer feedback.No commitment taken to design or produce
NRND: Not Recommended for New Design.Product is in volume production only to support customers ongoing production.
Budgetary PriceMarketing description of the package type.Storage method used to contain product.Main country of assembly or fabrication of the product.ECCNs are five character alpha-numeric designations used on the Commerce Control List to identify dual-use items for export control purposes. ECCNs are five character alpha-numeric designations used on the Commerce Control List to identify dual-use items for export control purposes.The value as specified by level (minTypMax) of the ambient temperature (in Cel) in which this item was designed to operate.The value as specified by level (minTypMax) of the ambient temperature (in Cel) in which this item was designed to operate.