Texas Instruments PCM1740 94dB SNR Stereo DAC with Programmable PLL&VCXO PCM1740E/2KG4

The PCM1740E/2KG4 is a stereo digital-to-analog converter (DAC) from Texas Instruments, featuring a dynamic range and signal-to-noise ratio (SNR) of 94 dB. It employs a complete delta-sigma architecture, which includes an 8x interpolation filter and a 3rd-order noise shaping mechanism. The device supports multiple audio sampling frequencies ranging from 16 kHz to 96 kHz, making it versatile for various audio applications. This DAC integrates a voltage-controlled crystal oscillator (VCXO) that outputs a 27 MHz clock signal, along with a programmable phase-locked loop (PLL) that can provide system clock outputs at 256f_S or 384f_S. The PCM1740E/2KG4 is designed for use in set-top boxes and digital broadcast receivers, ensuring high-quality audio playback. The device features a serial audio interface that supports standard and I¬=S data formats with selectable bit lengths of 16, 20, or 24 bits. It also includes programmable controls for digital attenuation, soft mute, and de-emphasis for specific sampling rates. The DAC operates on a single +5V supply and is housed in a compact SSOP-24 package, making it suitable for space-constrained designs.