TAS2120 datasheet(3/63 Pages) TI

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Pin Functions

Type(1)

DESCRIPTION

NAME

NO.

BGND

Boost ground. Connect to PCB GND plane strongly with multiple vias.

DREG

Digital core voltage regulator output. Bypass to GND with a capacitor. Do not connect to an

external load.

FSYNC

I2S word clock or TDM frame sync.

GREG

High-side gate CP regulator output. Do not connect to an external load.

GND

22, 23, 25

Connect to PCB GND plane. Strong connection to ground plane required through multiple

vias.

IOVDD

1.8V or 3.3V Digital IO supply. Decouple to GND with capacitor.

IRQZ

Open drain, active low interrupt pin. Pull up to IOVDD with resistor if optional internal

pullup is not used.

OUT_N

Class-D negative output.

OUT_P

Class-D positive output.

PGND

Class-D Power stage ground. Connect to PCB GND plane strongly through multiple vias.

PVDD

Integrated boost output and Class-D power stage supply.

SBCLK

I2S/TDM serial bit clock.

SDIN

I2S or TDM serial data input.

SDOUT

I/O

I2S or TDM serial data output.

SDZ

Active low hardware shutdown.

SEL1

HW Mode: Select 1 Pin. Amplifier gain level selection with volume ramp enable and

disable options.

I2C Mode: Short to GND for I2C mode selection.

SEL2_SCL

HW Mode: Select 2 Pin. I2S, TDM, Left justified selection.

I2C Mode: Clock Pin. Pull up to IOVDD with a resistor.

SEL3_SDA

I/O

HW Mode: Select 3 Pin. Data valid rising edge and falling edge selection.

I2C Mode: Data Pin. Pull up to IOVDD with a resistor.

SEL4_ADDR

HW Mode: Select 4 Pin.Y-bridge threshold configuration setting.

I2C Mode: I2C address pin.

SEL5

I/O

HW Mode: Select5 Pin. Boost 1S, 2S, External PVDD mode selection.

Boost converter switch input.

VBAT

Battery power supply input. Connect to a 2.5 to 5.5V supply and decouple with a capacitor.

VBAT_SNS

Battery sense terminal. Connect to 1S or 2S battery supply for remote battery sensing.

Ground the pin if remote sensing is not used.

VDD

Connect to 1.8V supply and decouple to GND with capacitor.

(1)

I = Input, O = Output, I/O = Input or Output, G = Ground, P = Power.

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TAS2120

SLASFC6 – AUGUST 2024

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