STAC9250 Datasheet, PDF (13/137 Pages) Integrated Device Technology – TWO-CHANNEL HD AUDIO CODEC WITH MODEM & DUAL DIGITAL MICROPHONE INTERFACES

STAC9250/9251
TWO-CHANNEL HD AUDIO CODEC WITH MODEM & DUAL DIGITAL MICROPHONE INTERFACES
PC AUDIO
2.3. STAC9250/9251 5V Analog Performance Characteristics
(T_ambient = 25 ºC, AVdd = 5.0 V ± 5%, DVdd = 3.3 V ± 5%, AVss = DVss = 0 V; 1 KHz input sine wave; Sample
Frequency = 48 KHz; 0dB = 1 VRMS, 10 KΩ / 50 pF load, Testbench Characterization BW: 20 Hz – 20 KHz, 0dB set-
tings on all gain stages)
Min and Max performance targets are not included here, as specific system characteristics, such as layout, routing and
external CODEC component selection, influence the performance of the CODEC. To receive min/max levels for your
system, please send us a unit and IDT will perform a full audio test suite and provide you with the results. Contact IDT
for more information.
Parameter
Full Scale Input Voltage:
All Analog Inputs with out boost
All Analog Inputs with boost (Note 1)
Full Scale Output:
PCM (DAC) to All Analog Outputs
HEADPHONE_OUT (32 Ω load) per channel (peak)
Dynamic Range: -60dB signal level (Note 2)
PCM to All Analog Outputs
All Analog Inputs to A/D (1 VRMS Input Referenced)
Analog Frequency Response (Note 3)
Total Harmonic Distortion + Noise (-3dB): (Note 4)
PCM to All Analog Outputs
All Analog Inputs to A/D (-3dBV input Level)
HEADPHONE_OUT (32 Ω load)
HEADPHONE_OUT (10 KΩ load)
SNR (idle channel) (Note 5)
DAC to All Analog Outputs
All Analog Inputs to A/D with High Pass Filter enabled
A/D & D/A Digital Filter Pass Band (Note 6)
A/D & D/A Digital Filter Transition Band
A/D & D/A Digital Filter Stop Band
A/D & D/A Digital Filter Stop Band Rejection (Note 7)
DAC Out-of-Band Rejection (Note 8)
Group Delay (48 KHz sample rate)
Power Supply Rejection Ratio (1 KHz)
Power Supply Rejection Ratio (20 KHz)
Any Analog Input to ADC (10 KHz Signal Frequency) Crosstalk
Any Analog Input to ADC (1 KHz Signal Frequency) Crosstalk
Spurious Tone Rejection
Min
-
-
-
-
-
-
10
-
-
-
-
-
-
20
19,200
28,800
-100
-55
-
-
-
-
-
-
Typ
1.00
0.03
1.00
50
99
88
-
-90
-87
-87
-90
100
89
-
-
-
-
-
-
-70
-40
-90
-90
-100
Max Unit
-
Vrms
-
Vrms
-
Vrms
-
mW
-
dB
-
dB
30,000 Hz
-
dB
-
dB
-
dB
-
dB
-
dB
-
dB
19,200 Hz
28,800 Hz
-
Hz
-
dB
-
dB
1
ms
-
dB
-
dB
-
dB
-
dB
-
dB
IDT™
13
TWO-CHANNEL HD AUDIO CODEC WITH MODEM & DUAL DIGITAL MICROPHONE INTERFACES
STAC9250/9251
V 1.1 102706