SDAA409 June   2026 TAS2118 , TAS2120 , TAS2320

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Application Schematics
    1. 2.1 Recommended Component Ratings
  6. 3Design Guidelines
    1. 3.1 Hardware Control Reference Schematic
    2. 3.2 Hardware Control Reference PCB Layout
      1. 3.2.1 GND Connections
      2. 3.2.2 Power Connections
      3. 3.2.3 Output Connections
      4. 3.2.4 GREG Connection
      5. 3.2.5 Input and SEL Connections
    3. 3.3 Software Control Reference Schematic
    4. 3.4 Software Control Reference PCB Layout
  7. 4Summary
  8. 5References

2.1 Recommended Component Ratings

Table 2-1 lists the recommended component ratings for the components shown in Figure 2-1.

Table 2-1 Component Ratings
Component Description Specification Min Typical Max Unit
L1 Boost Converter Inductor Inductance 0.47 1 - µH
Saturation Current - 5.3 - A
L2, L3 Optional EMI Filter Inductors DC Current 2 - - A
C1, C2 DREG, IOVDD decoupling capacitors Capacitance 20% tolerance - 1 - µF
Voltage Rating 2 6.3 - V
C3 VDD decoupling capacitor Capacitance 20% tolerance - 2.2 - µF
Voltage Rating

4

 6.3 - V
C4 VBAT decoupling capacitor Capacitance 20% tolerance - 1 - µF
Voltage Rating 6.3 10 - V
C5 VBAT power decoupling capacitor Capacitance 20% tolerance - 10 - µF
Voltage Rating 6.3 10 - V
C5a VBAT2S decoupling capacitor Capacitance 20% tolerance - 10 - µF
Voltage Rating 10 16 - V
C6 PVDD Low-ESL decoupling capacitor Capacitance 20% tolerance - 0.1 - µF
Voltage Rating 16 25 - V
C7, C8, *C12 PVDD Power decoupling capacitors.

C12 required only for Boost output >13V

 Capacitance 20% tolerance - 10 - µF
Voltage Rating 16 25 - V
De-rated capacitance at 13V of the combined PVDD capacitor 3 - - µF
C9 GREG decoupling capacitor Capacitance 20% tolerance - 0.1 - µF
Voltage Rating 6.3 10 - V
C10, C11 Optional 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)