
27
92HD75B
V 1.0 01-09
4-CHANNEL HD AUDIO CODECS OPTIMIZED FOR LOW POWER
92HD75B
4-CHANNEL HD AUDIO CODECS OPTIMIZED FOR LOW POWER
PC AUDIO
2.2.
92HD75B 5V, 4.75V, and 3.3V Analog Performance Characteristics
(Tambient = 25 C, AVdd = Supply ± 5%, DVdd = 3.3V ± 5%, AVss=DVss=0V; 20Hz to 20KHz swept
sinusoidal input; Sample Frequency = 48 kHz; 0 dB = 1 VRMS, 10K
Ω//50pF load, Testbench Char-
acterization BW: 20 Hz – 20 kHz, 0 dB settings on all gain stages)
ESD: The 92HD75B is an ESD (electrostatic discharge) sensitive device. The human body and test equipment can
accumulate and discharge electrostatic charges up to 4000 Volts without detection. Even though the 92HD75B implements
internal ESD protection circuitry, proper ESD precautions should be followed to avoid damaging the functionality or
performance.
Table 12. 92HD75B 5V, 4.75V, and 3.3V Analog Performance Characteristics
Parameter
Conditions
AVdd
Min
Typ
Max
Unit
Digital to Analog Converters
Resolution
All
24
Bits
Dynamic Range1: PCM to All Analog
Outputs
-60dB FS signal level
5V
4.75V
3.3V
93
-dB
SNR2 - DAC to All Mono/Line-Out Ports
Analog Mixer Disabled,
PCM data
5V
4.75V
3.3V
95
dB
THD+N3 - DAC to All Mono/Line-Out Ports
Analog Mixer Disabled, 0dB FS
Signal, PCM data
5V
4.75V
3.3V
83
dBr
THD+N3 - DAC to All Mono/Line-Out Ports
Analog Mixer Disabled,-3dB FS
Signal, PCM data
5V
4.75V
3.3V
83
dBr
Dynamic Range3: PCM to All Analog
Outputs
Analog Mixer Enabled PC Beep
enabled, -60dB FS signal level
5V
4.75V
3.3V
92
dB
THD+N3 - DAC to All Mono/Line-Out Ports Analog Mixer Enabled with Analog PC
Beep enabled, 0dB FS Signal, PCM
data
5V
4.75V
3.3V
81
dBr
THD+N3 - DAC to All Mono/Line-Out Ports
Analog Mixer Enabled PC Beep
enabled,-3dB FS Signal, PCM data
5V
4.75V
3.3V
81
dBr
SNR2 - DAC to All Headphone Ports
Analog Mixer Disabled, 10K
Ω load,
PCM data
5V
4.75V
3.3V
95
dB
THD+N3 - DAC to All Headphone Ports
Analog Mixer Disabled, 0dB FS
Signal, 10K
Ω load, PCM data
5V
4.75V
3.3V
83
dBr