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6 page 
6 2744A–PMGMT–27-Jan-05 AT73C213 7. Audio DAC 7.1 Electrical Specifications AVDD, AVDDHS = 2.8 V, T A = 25°C, typical case, unless otherwise noted. All noise and distortion specifications are measured in the 20 Hz to 0.425xFs and A-weighted filtered. Full-scale levels scale proportionally with the analog supply voltage. Table 7-1. Electrical Specifications Min Typ Max Units OVERALL Operating Temperature (ambient) -40 +25 +85 °C Analog Supply Voltage (AVDD, AVDDHS) 2.7 2.8 3.3 V Digital Supply Voltage (VDIG) 2.4 2.8 3.3 V DIGITAL INPUTS/OUTPUTS Resolution 20 bits Logic Family CMOS Logic Coding 2's Complement ANALOG PERFORMANCE - DAC to Line-out/Headphone Output Output level for full scale input (for AVDD, AVDDHS = 2.8 V) 1.65 Vpp Output common mode voltage 0.5 x AVDDHS V Output load resistance (on HSL, HSR) Headphone load Line load 16 7 32 10 Ohm kOhm Output load capacitance (on HSL, HSR) Headphone load Line load 30 30 1000 150 pF pF Signal to Noise Ratio (-1dBFS @ 1kHz input and 0dB Gain) Line and Headphone loads 87 92 dB Total Harmonic Distortion (-1dBFS @ 1kHz input and 0dB Gain) Line Load Headphone Load Headphone Load (16 Ohm) 0.01 0.06 0.5 0.016 0.1 1 % % % Dynamic Range (measured with -60 dBFS @ 1kHz input, extrapolated to full-scale) Line Load Headphone Load 88 70 93 74 dB dB Interchannel mismatch 0.1 1 dB Left-channel to right-channel crosstalk (@ 1kHz) -90 -80 dB Output Headset Driver Level Control Range -6 6 dB Output Headset Driver Level Control Step 3 dB |
