TDA7801 STMicroelectronics

TDA7801 Digital input quad power amplifier with built-in diagnostics features Datasheet - production data 2 Two I C bus addresses and 8-ch TDM mode (only in PowerSO package) 2 Optional non I C bus mode 0 03 Offset detector (play or mute mode) 0 03 PowerSO36 Clipping detector (selectable level) and Flexiwatt27 (slug-up) (horizontal) diagnostics pin CMOS compatible enable pin (3.3/5 V) Full fault protection Four independent short circuit protections 0 03 0 03 Linear thermal protection (four thermal Flexiwatt27 Flexiwatt27 warnings) (vertical) (SMD) ESD protection Features Description Integrated 110 dB D/A conversion The TDA7801 is a new BCD technology quad 2 I S digital input (3.3/1.8 V) with TDM option bridge amplifier for car audio applications. Selectable input sampling frequency: Thanks to the BCD6 technology it is possible to 44.1 kHz, 48 kHz, 96 kHz, 192 kHz integrate a high performance D/A converter MOSFET power outputs together with powerful MOSFET outputs. High output power capability 4x28 W/ 4 The possibility of having the D/A conversion on 14.4 V, 1 kHz, 10 % THD board allows the performance to reach an outstanding 115 dB S/N ratio with more than Max. output power 4x72 W/2 105 dB of dynamic range. 2 Full I C bus driving (3.3/5 V): This device is equipped with a full diagnostics Independent front/rear soft play/ mute array that communicates the status of each Selectable gain (four levels) for very low 2 speaker through the I C bus. The possibility to noise line-out function control the configuration and behavior of the 2 I C bus digital diagnostics (including DC 2 device by means of the I C bus makes TDA7801 a and AC load detection) very flexible machine. Table 1. Device summary Order code Package Packing TDA7801PD PowerSO36 (slug-up) Tube TDA7801PDTR PowerSO36 (slug-up) Tape and reel TDA7801 Flexiwatt27 (vertical) Tube TDA7801H Flexiwatt27 (horizontal) Tube TDA7801SM Flexiwatt27 (SMD) Tube September 2013 DocID022674 Rev 4 1/48 This is information on a product in full production. www.st.com 1Contents TDA7801 Contents 1 Block diagram and pins description 6 1.1 Block diagram . 6 2 Application diagrams 7 2.1 Pin description 9 3 Electrical specifications . 12 3.1 Absolute maximum ratings 12 3.2 Thermal data 12 3.3 Electrical characteristics 13 3.4 Electrical characteristics typical curves 17 4 Operation mode 21 4.1 Standby mode . 21 4.2 Tristate mode 21 4.3 Amplifier mode . 21 5PLL-filter /enabl pin description 22 5.1 Functionality . 22 5.2 Driving . 22 6 Functional description 23 6.1 Voltage supplies timing . 23 6.2 Turn-on diagnostic description . 23 6.3 Permanent diagnostic 25 6.4 AC diagnostic 26 6.5 Output DC offset detection 26 6.6 Multiple faults 27 6.7 Faults availability . 27 2 6.8 I C programming/reading sequence 27 6.9 Legacy mode 28 6.10 Thermal protection 28 2/48 DocID022674 Rev 4