IDT CONFIDENTIAL
41
V 0.987 11/09
2009 INTEGRATED DEVICE TECHNOLOGY, INC.
92HD81
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
3.2.
92HD81 Analog Performance Characteristics (PRELIMINARY)
(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 92HD81 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 92HD81 implements
internal ESD protection circuitry, proper ESD precautions should be followed to avoid damaging the functionality or
performance.
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
93
100
-dB
SNR2 - DAC to All Mono/Line-Out Ports
Analog Mixer Disabled, PCM data
5V
4.75V
95
dB
THD+N3 - DAC to All Mono/Line-Out Ports Analog Mixer Disabled, 0/-1/-3dB FS
Signal, PCM data
5V
4.75V
83
dBr
SNR2 - DAC to All Headphone Ports
Analog Mixer Disabled, 10K
Ω load,
PCM data
5V
4.75V
95
dB
THD+N3 - DAC to All Headphone Ports
Analog Mixer Disabled, 0/-1/-3dB FS
Signal, 10K
Ω load, PCM data
5V
4.75V
83
dBr
SNR2 - DAC to All Headphone Ports
Analog Mixer Disabled, 32
Ω load,
PCM data
5V
4.75V
95
dB
THD+N3 - DAC to All Headphone Ports
Analog Mixer Disabled, 0dB FS
Signal, 32
Ω load, PCM data
5V
4.75V
68
dBr
Any Analog Input (ADC) to DAC Crosstalk
10KHz Signal Frequency. 0dBV
signal applied to ADC, DACs idle,
ports enabled as output.
All
-65
-
dB
Any Analog Input (ADC) to DAC Crosstalk
1KHz Signal Frequency
see above
All
-65
-
dB
DAC L/R crosstalk
DAC to LO or HP 20-15KHz into
10K
Ω load
All
65
dB
DAC L/R crosstalk
DAC to HP 20-15KHz into 32
Ω load
All
65
dB
Gain Error
Analog Mixer Disabled
All
0.5
dB
Interchannel Gain Mismatch
Analog Mixer Disabled
All
0.5
dB
D/A Digital Filter Pass Band4
All
20
-
21,000
Hz
D/A Digital Filter Pass Band Ripple5
0.1
+/- dB
D/A Digital Filter Transition Band
All
21,000
-
31,000
Hz
D/A Digital Filter Stop Band
All
31,000
-
Hz
D/A Digital Filter Stop Band Rejection6
All
-100
-
dB
Table 14. 92HD81 Analog Performance Characteristics