SLOS442A – MAY 2005 – REVISED JULY 2005
20-W MONO DIGITAL INPUT AUDIO AMPLIFIER
• Digital Interface
– 24-bit Resolution
– Supports I2S and 16-Bit Word
Right-Justified Digital Input Formats
– Multiple Sampling Frequencies:
5 kHz – 200 kHz
– 8x Oversampling Digital Filter
– Soft Mute
• Power Amplifier
– 20-W into an 8-Ω Load from an 18-V Supply
– Efficient Operation Eliminates Need for Heat
– Three Selectable, Fixed Gain Settings
– Thermal and Short-Circuit Protection
The TPA3200D1 is a 20-W (per channel) efficient,
digital audio power amplifier for driving a bridged-tied
speaker. The TPA3200D1 can drive a speaker with
an impedance as low as 4 Ω. The high efficiency of
the TPA3200D1 (85%) eliminates the need for an
external heat sink.
The digital input accepts 16-24 bit data in I2S format
or 16-bit word right-justified. A digital filter performs
an 8x interpolation function. Other features include
soft mute, a zero input detect output flag for power
conscious designs, and power saving shutdown
Simplified Application Circuit
I2S or 16-bit RJ
Zero Input Flag
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2005, Texas Instruments Incorporated