Inside

• Simplify designs with integrated 3-V LDO and supply voltage supervisor
• Lowest distortion 1.5 W stereo audio amplifier
• 8-Bit, 20 MSPS ADC with 4-volts of analog input range
• TI expands family of 3.3-V LVDS devices
• Ultra fast voltage comparators
• 20_Bit stereo A/D and D/A offers professional audio

Product Features

• 20-Bit Stereo A/D & D/A
• SNR of 100 dB on ADC & 104 dB on DAC
• Up to 48 KHz sample rates on ADC & DAC
• Digital attenuation & soft mute on DAC
• 64X A/D and 32X D/A sigma delta conversion

The TLC320AD75 provides a complete stereo audio conversion system for high performance digital audio applications. The device includes 20-bit stereo A/D and D/A conversion in a single low cost package. The ADC achieves Signal-to-Noise ratios of 100 dB at sample rates up to 48 kHz. In addition, the device operates from either 5 V only or separate 5 V and 3.3 V power supply configurations. Typical power dissipation for the device is 400 mW or 2 mW in standby.

The ‘AD75 DAC uses sigma delta technology and a PWM output to achieve a signal to noise ratio (SNR) of 104 dB on playback. When the PWM output is connected to an external lowpass reconstruction filter, the resulting THD+N is typically 0.0013%. The device features digital attenuation, digital de-emphasis filtering, and soft mute via a separate serial port. Using the control port, pre-emphasized record-ings can be filtered at industry standard settings for 32, 44.1, and 48 kHz sample rates. Also via the control port, downstream gain adjustments can be eliminated using the built in programmable attenuator. block diagram

• Consumer Audio: CD, MD, DVD, Keyboards, etc.
• Business Audio: Workstation, PC
• General Purpose High Resolution Data Conversion

The ‘AD75 ADC builds on the success of the other members of TI’s family of high performance audio ADCs, the TLC320AD57 and TLC320AD58. All three devices utilize sigma delta technology to achieve the high standards available. The ADC provides separate analog and digital power management pins as well as both master and slave modes for a variety of applications. The TLC320AD75 is avail-able in a 56-pin SSOP package.

• TLC320AD75CDL