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32
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
VREFOut Drive
All
1.6
mA
VREFILT (VAG)
All
0.45 X
AVdd
V
Phased Locked Loop
PLL lock time
All
96
200
usec
PLL (or Azalia Bit CLK) 24MHz clock jitter
All
150
500
psec
ESD / Latchup
Latch-up
As described in JESD78A Class II
All
70
degC
ESD - Human Body Model
As described in JESD22-A114-B
All
2K
3K
V
Charged Device Model
As described in JESD22-C101
All
500
1K
V
1.Dynamic Range is the ratio of the full scale signal to the noise output with a -60dBFS signal as defined in AES17 as SNR in the
presence of signal and outlined in AES6id, measured “A weighted” over 20 Hz to 20 kHz bandwidth.
2.Ratio of Full Scale signal to idle channel noise output is measured “A weighted” over a 20 Hz to a 20 kHz bandwidth.
(AES17-1991 Idle Channel Noise or EIAJ CP-307 Signal-to-noise Ratio).
3.THD+N ratio as defined in AES17 and outlined in AES6id,non-weighted, over 20 Hz to 20 kHz bandwidth.Results at the jack
are dependent on external components and will likely be 1 - 2dB worse.
4.Peak-to-Peak Ripple over Passband meets ± 0.125dB limits, 48 kHz or 44.1 kHz Sample Frequency. 1dB limit.
5.Stop Band rejection determines filter requirements. Out-of-Band rejection determines audible noise.
6.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.
7.In series with 5
Ω. Maximum output capacitance is reduced to 220pF if a single pole 30kHz filter is added to attenuate conversion
noise.
8.Gain drift is the change in analog volume control gain for each step across the supported 0 oC TO 70 oC temperature range
referenced to the 25 oC gain value and specified in ppm per oC
9.± 1dB limits for Line Output & 0 dB gain, at -20dBV
10.Spurious tone rejection is tested with ADC dither enabled and compared to ADC performance without dither.
11.Everything enabled and active. Does not include 32
Ω load headphone power.
12.Idle measurement D3 set for minimum clicks/pops (biases and min. amps. on)
13.All GPIO and Digital microphone pins.
14.VDD is AVDD1 for GPIO5-7 and DVDD_CORE for others.
15.Can be set to 0.5 or 0.8 AVdd.
Table 12. 92HD75B 5V, 4.75V, and 3.3V Analog Performance Characteristics
Parameter
Conditions
AVdd
Min
Typ
Max
Unit