92HD87 Datasheet, PDF (34/204 Pages) Integrated Device Technology – SINGLE CHIP PC AUDIO SYSTEM

92HD87
SINGLE CHIP PC AUDIO SYSTEM, CODEC+STEREO SPEAKER AMPLIFIER+CAPLESS HP+LDO
3.2. 92HD87 Analog Performance Characteristics
(Tambient = 25 ºC, 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//50pF load, Testbench Char-
acterization BW: 20 Hz – 20 kHz, 0 dB settings on all gain stages)
Parameter
Conditions
AVdd Min Typ
Digital to Analog Converters
Resolution
All
24
Dynamic Range¹: PCM to All Analog
Outputs
-60dB FS signal level
5V
93
100
4.75V 93
100
SNR² - DAC to All Mono/Line-Out Ports
Analog Mixer Disabled, PCM data
5V
4.75V
95
95
THD+N³ - DAC to All Mono/Line-Out Ports ^{Analog Mixer Disabled, 0/-1/-3dB FS 5V}
83
Signal, PCM data
4.75V 83
SNR² - DAC to All Headphone Ports
Analog Mixer Disabled, 10K load, 5V
95
PCM data
4.75V 95
THD+N³ - DAC to All Headphone Ports
Analog Mixer Disabled, 0/-1/-3dB FS 5V
83
Signal, 10K load, PCM data
4.75V 83
SNR² - DAC to All Headphone Ports
Analog Mixer Disabled, 32 load,
5V
95
PCM data
4.75V 95
THD+N³ - DAC to All Headphone Ports
Analog Mixer Disabled, 0dB FS
Signal, 32 load, PCM data
5V
68
4.75V 68
Any Analog Input (ADC) to DAC Crosstalk 10KHz Signal Frequency. 0dBV
signal applied to ADC, DACs idle,
All
-65
-
ports enabled as output.
Any Analog Input (ADC) to DAC Crosstalk
1KHz Signal Frequency
see above
All
-65
-
DAC L/R crosstalk
DAC to LO or HP 20-15KHz into
10K load
All
65
DAC L/R crosstalk
DAC to HP 20-15KHz into 32 load All
65
Gain Error
Analog Mixer Disabled
All
Interchannel Gain Mismatch
Analog Mixer Disabled
All
D/A Digital Filter Pass Band⁴
All
20
-
D/A Digital Filter Pass Band Ripple⁵
D/A Digital Filter Transition Band
All 21,000 -
D/A Digital Filter Stop Band
All 31,000 -
D/A Digital Filter Stop Band Rejection⁶
All -100
-
D/A Out-of-Band Rejection⁷
All
-55
-
Group Delay (48KHz sample rate)
All
-
-
Attenuation, Gain Step Size DIGITAL
All
-
0.75
DAC Offset Voltage
All
-
10
Deviation from Linear Phase
All
-
1
Analog Outputs
Max
-
-
-
0.5
0.5
21,000
0.1
31,000
-
-
-
1
-
20
10
Unit
Bits
dB
dB
dBr
dB
dBr
dB
dBr
dB
dB
dB
dB
dB
dB
Hz
+/- dB
Hz
Hz
dB
dB
ms
dB
mV
deg.
Table 13. 92HD87 Analog Performance Characteristics
IDT CONFIDENTIAL
34
©2009 INTEGRATED DEVICE TECHNOLOGY, INC.
V 0.995 01/11
92HD87