PCM1770
Description
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 ∆-Σ architecture, which employs noise shaping and multilevel amplitude quantization to achieve excellent dynamic performance and improved tolerance to clock jitter.
Key Features
- Multilevel DAC Including Headphone Amplifier
- Analog Performance (VCC, VHP = 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 RL = 16 Ω: 13 mW (Stereo), 26 mW (Monaural)
- 1.6-V to 3.6-V Single Power Supply
- Low Power Dissipation: 6.5 mW at VCC, VHP =
- System Clock: 128 fS, 192 fS, 256 fS, 384 fS
- 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
