STAC9752/9753
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING
IDT™
14 STAC9752/9753
REV 3.3 1206
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING
6. Peak-to-Peak Ripple over Passband meets ± 0.25dB limits, 48 KHz Sample Frequency.
7. Stop Band rejection determines filter requirements. Out-of-Band rejection determines audible noise.
8. The integrated Out-of-Band noise generated by the DAC process, during normal PCM audio playback, over a bandwidth
28.8 to 100 KHz, with respect to a 1 Vrms DAC output.
2.1.6. STAC9753 3.3V Analog Performance Characteristics
(T
ambient
= 25 ºC, AVdd = DVdd = 3.3 V ± 5%, AVss=DVss=0 V; 1 KHz input sine wave; Sample Fre-
quency = 48 KHz; 0 dB = 1 Vrms, with a 10 KΩ, 50 pF load, Testbench Characterization BW: 20 Hz
to 20 KHz, 0 dB settings on all gain stages)
Parameter Min Typ Max Unit
Full Scale Input Voltage:
All Analog Inputs except Microphone - 1.00 - Vrms
Microphone Inputs (Note 1) - 0.03 - Vrms
Full Scale Output:
Line Output - 0.5 - Vrms
PCM (DAC) to LINE_OUT - 0.5 - Vrms
MONO_OUT - 0.5 - Vrms
HEADPHONE_OUT (32 Ω load) per channel (peak) - 12.5 - mW
Dynamic Range: -60dB signal level (Note 2)
CD to LINE_OUT - 85 - dB
LINE / AUX / VIDEO to LINE_OUT - 85 - dB
PCM (DAC) to LINE_OUT 75 82 - dB
PCM (DAC) in BYPASS Mode to LINE_OUT - 83 - dB
LINE_IN to A/D 75 85 - dB
LINE_IN to HEADPHONE_OUT - 85 - dB
Analog Frequency Response (Note 3) 10 - 30,000 Hz
Total Harmonic Distortion + Noise (-3dB): (Note 4)
CD to LINE_OUT - -85 - dB
LINE / AUX / VIDEO to LINE_OUT - -85 - dB
PCM (DAC) to LINE_OUT (full scale) - -81 - dB
PCM (DAC) in BYPASS Mode to LINE_OUT - -84 - dB
LINE_IN to A/D (-3dBV input Level) - -85 - dB
HEADPHONE_OUT (32 Ω load) - -68 - dB
HEADPHONE_OUT (10 kΩ load) - -77 - dB
SNR (idle channel) (Note 5)
DAC to LINE_OUT 75 85 - dB
DAC in BYPASS Mode - 87 - dB
LINE / AUX / VIDEO to LINE_OUT - 86 - dB
LINE_IN to A/D with High Pass Filter enabled - 88 - dB
A/D & D/A Digital Filter Pass Band (Note 6) 20 - 19,200 Hz
A/D & D/A Digital Filter Transition Band 19,200 - 28,800 Hz
A/D & D/A Digital Filter Stop Band 28,800 - - Hz
A/D & D/A Digital Filter Stop Band Rejection (Note 7) -100 - - dB
DAC Out-of-Band Rejection (Note 8) -55 - - dB
Group Delay (48 KHz sample rate) - - 1 ms
Power Supply Rejection Ratio (1 KHz) - -70 - dB
