PCM1770 - 98dB SNR Low-Power Stereo DAC with HP Amplifier (S/W Control)

The PCM1770 and PCM1771 devices are CMOS, monolithic, integrated circuits which include stereo digital-to-analog converters, headphone circuitry, and support circuitry in small TSSOP-16 and VQFN-20 packages.

The data converters use TI's enhanced multilevel architecture, which employs noise shaping and multilevel amplitude quantization to achieve excellent dynamic performance and improved tolerance to clock jitter. The PCM1770 and PCM1771 devices accept several industry standard audio data formats with 16- to 24-bit data, left-justified, I²S, etc., providing easy interfacing to audio DSP and decoder devices. Sampling rates up to 50 kHz are supported. A full set of user-programmable functions is accessible through a 3-wire serial control port, which supports register write functions.

Products containing the "PCM1770" keyword are: PCM1770PW , PCM1770PW , PCM1770PWP , PCM1770PWR , PCM1770PWR , PCM1770PWR SMD , PCM1770PWRG4 , PCM1770RGA , PCM1770RGA , PCM1770RGAR , PCM1770RGAR , PCM1770RGARG4

• Multilevel DAC Including Headphone Amplifier
• Analog Performance (V_CC, V_HP = 2.4 V):
  • Dynamic Range: 98 dB Typ
  • THD+N at 0 dB: 0.1% Typ
  • THD+N at -20 dB: 0.04% Typ
  • Output Power at R_L = 16 : 13 mW (Stereo), 26 mW (Monaural)
• 1.6-V to 3.6-V Single Power Supply
• Low Power Dissipation: 6.5 mW at V_CC, V_HP = 2.4 V
• System Clock: 128 f_S, 192 f_S, 256 f_S, 384 f_S
• Sampling Frequency: 5 kHz to 50 kHz
• Software Control (PCM1770):
  • 16-, 20-, 24-Bit Word Available
  • Left-, Right-Justified, and I²S
  • Slave/Master Selectable
  • Digital Attenuation: 0 dB to -62 dB, 1 dB/Step
  • 44.1-kHz Digital De-Emphasis
  • Zero Cross Attenuation
  • Digital Soft Mute
  • Monaural Analog-In With Mixing
  • Monaural Speaker Mode
• Hardware Control (PCM1771):
  • Left-Justified and I²S
  • 44.1-kHz Digital De-Emphasis
  • Monaural Analog-In With Mixing
• Pop-Noise-Free Circuit
• 3.3-V Tolerant
• Packages: TSSOP-16 and VQFN-20
• APPLICATIONS
  • Portable Audio Player
  • Cellular Phone
  • PDA
  • Other Applications Requiring Low-Voltage Operation