SLAAEM7 September   2024 TAS2120 , TAS2320

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Application Schematics
    1. 2.1 Recommended Component Ratings
    2. 2.2 Reference Schematic
  6. 3Design Guidelines
    1. 3.1  VDD Pin
    2. 3.2  PVDD Pin
    3. 3.3  GREG Pin
    4. 3.4  SW Pin
    5. 3.5  VBAT Pin
    6. 3.6  OUT_P and OUT_N Pins
      1. 3.6.1 Optional EMI Filter on Output
    7. 3.7  IOVDD Pin
    8. 3.8  DREG Pin
    9. 3.9  Digital I/O Pins
    10. 3.10 Ground Pins
    11. 3.11 HW Selection Pins
  7. 4EMI Specific Guidelines
  8. 5Summary
  9. 6References

2.1 Recommended Component Ratings

Table 3-3 shows the recommended component ratings for the components shown in Figure 2-1, Figure 2-2, and Figure 2-3.

Table 2-1 Component Ratings
ComponentDescriptionSpecificationMinTypicalMaxUnit
L1Boost Converter InductorInductance0.471-µH
Saturation Current-5.3-A
L2, L3Optional EMI Filter InductorsDC Current2--A
C1, C2DREG, IOVDD decoupling capacitorsCapacitance 20% tolerance-1-µF
Voltage Rating26.3-V
C3VDD decoupling capacitorCapacitance 20% tolerance-2.2-µF
Voltage Rating

4

6.3-V
C4VBAT decoupling capacitorCapacitance 20% tolerance-1-µF
Voltage Rating6.310-V
C5VBAT power decoupling capacitorCapacitance 20% tolerance-10-µF
Voltage Rating6.310-V
C5aVBAT2S decoupling capacitorCapacitance 20% tolerance-10-µF
Voltage Rating1016-V
C6PVDD Low-ESL decoupling capacitorCapacitance 20% tolerance-0.1-µF
Voltage Rating1625-V
C7, C8, *C12PVDD Power decoupling capacitors.

C12 required only for Boost output >13V

Capacitance 20% tolerance-10-µF
Voltage Rating1625-V
De-rated capacitance at 13V of the combined PVDD capacitor3--µF
C9GREG decoupling capacitorCapacitance 20% tolerance-0.1-µF
Voltage Rating6.310-V
C10, C11Optional EMI Filter capacitors (must use L2, L3 if C10, C11 are used)Voltage Rating

2xPVDD

-V

Function selection pins in hardware mode must be connected to IOVDD, VBAT or GND using specific resistor values for each of the options, follow the Table 2-2 table to select the correct component values.

Table 2-2 Hardware Select Pin Resistor Values
Hardware Select Pin Resistor Value Description
SEL1 0Ω to VBAT 21dBV and Volume Ramp Enabled
24kΩ to VBAT 18dBV and Volume Ramp Enabled
24kΩ to GND 12dBV and Volume Ramp Enabled
5kΩ to VBAT 6dBV and Volume Ramp Enabled
330Ω to VBAT 21dBV and Volume Ramp Disabled
5kΩ to GND 18dBV and Volume Ramp Disabled
1.2kΩ to VBAT 12dBV and Volume Ramp Disabled
1.2kΩ to GND 6dBV and Volume Ramp Disabled
0Ω to GND I2C Mode
SEL2 1.2kΩ to IOVDD Left Justified Right Channel or TDM Slot 4
5kΩ to GND Left Justified Mix or TDM Slot 5
5kΩ to IOVDD TDM Slot 6
24kΩ to GND TDM Slot 7
1.2kΩ to GND Left Justified Left Channel or TDM Slot 3
0Ω to IOVDD I2S Mix or TDM Slot 2
330Ω to IOVDD I2S Right Channel or TDM Slot 1
0Ω to GND I2S Left Channel or TDM Slot 0
SEL3 0Ω to IOVDD Rising edge of SBCLK
0Ω to GND Falling edge of SBCLK
SEL4 24kΩ to IOVDD Address 0x94 or Y-Bridge Threshold 1mW
0Ω to IOVDD Address 0x96 or Y-Bridge Threshold 40mW
24kΩ to GND Address 0x92
0Ω to GND Address 0x90 or Y-Bridge Threshold 80mW
SEL5 0Ω to GND

TAS2120: VBAT 1S Mode

TAS2320: N/A
24kΩ to IOVDD

TAS2120: VBAT 2S Mode

TAS2320: N/A
0Ω to IOVDD TAS2120: External PVDD mode (2.5V to 14V)

TAS2320: External PVDD mode (2.5V to 14V)