TAS2781RYYR datasheet(4/90 Pages) TI2

4 / 90 page

Table 5-1. Pin Functions (continued)

I/O

DESCRIPTION

NAME

NO.

NC_V1P8V

NC_V1P8V = Tied to GND when ICC is not used and when SPI interface is not required,

NC_V1P8V = Tied to 1.8 V supply when ICC is used and when SPI interface is required,

OUTN

Class-D negative output.

OUTP

Class-D positive output.

PGND

Class-D ground. Connect to PCB ground plane.

PVDDH

Class-D power supply input. Decouple with a capacitor.

PVDDL

Single-cell battery supply input. Decouple with a capacitor.

PWM_CTRL

Control pin for external boost converter.

SBCLK

TDM Serial Bit Clock.

SCL_nSCS

I2C Mode: Clock pin; pull up to IOVDD with a resistor.

SPI Mode: Active low chip select pin.

SDA_SDI

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

SPI Mode: Serial data input pin.

SDIN

TDM Serial Data Input.

SDOUT

TDM Serial Data Output.

SDZ

Active low hardware shutdown.

VSNSN

Voltage Sense negative input. Connect to Class-D negative output or after a ferrite bead

filter.

VSNSP

Voltage Sense positive input. Connect to Class-D positive output or after a ferrite bead filter.

6 Specifications

6.1 Absolute Maximum Ratings

MIN

MAX

UNIT

Supply Voltage

AVDD

-0.3

IOVDD

-0.3

NC_V1P8V

-0.3

PVDDH

-0.3

PVDDL

-0.3

PVDDH - PVDDL

-0.3

Internal Supply Voltage

DREG

-0.3

1.5

IO Voltage(1)

SBLK, FSYNK,

SDIN, SDOUT, IRQZ,

SDA_SDI, SCL_nSCS,

PWM_CTRL, SDZ

-0.3

IO Voltage(1)

NC_SCLK, NC_SDO,

ICC, ADDR

-0.3

Operating free-air temperature, TA ; Device is functional and reliable, some

performance characteristics may be degraded.

PVDD is 23 V or below -40

°C

PVDD higher than 23 V -20

°C

Performance free-air temperature, TP ; All performance characteristics are met.

-20

°C

Operating junction temperature, TJ

PVDD is 23 V or below -40

150

°C

PVDD higher than 23 V -20

150

°C

Storage temperature, Tstg

–65

150

°C

(1)

All digital inputs and IOs are failsafe.

TAS2781

SLOSE86B – JULY 2022 – REVISED JULY 2023

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