Datasheet

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PCM2912
SLES216 – FEBRUARY 2008
ELECTRICAL CHARACTERISTICS (continued)
All specifications at T
A
= 25 ° C, V
BUS
= 5 V, f
S
= 44.1 kHz, f
IN
= 1 kHz, 16-bit data, unless otherwise noted
PCM2912PJT
PARAMETER TEST CONDITIONS UNIT
MIN TYP MAX
ADC CHARACTERISTICS
Resolution 16 Bits
Audio data channel 1 channel
8, 11.025, 16, 22.05, 32, 44.1,
Sampling frequency kHz
48
DYNAMIC PERFORMANCE
(6)
THD+N V
IN
= – 1 dB of 0.43 V
CCA
0.01% 0.02%
Dynamic range A-weighted 82 90 dB
S/N ratio A-weighted 84 92 dB
DC ACCURACY
Gain error ± 2 ± 10 % of FSR
Bipolar zero error ± 0 % of FSR
ANALOG INPUT
Input voltage 0.43 V
CCA
Vp-p
Center voltage 0.5 V
CCA
V
– 3 dB 150 kHz
Antialiasing filter frequency
response
f
IN
= 20 kHz – 0.08 dB
MICROPHONE AMPLIFIER
Gain 0 20 dB
Input impedance 20 k Ω
INPUT PGA
Gain range – 12 30 dB
Gain step size 1 dB
DIGITAL FILTER PERFORMANCE
Pass band 0.454 f
S
Hz
Stop band 0.583 f
S
Hz
Pass-band ripple ± 0.02 dB
Stop-band attenuation – 65 dB
Delay time 17.4/f
S
s
HPF frequency response – 3 dB 0.078 f
S
MHz
(6) f
IN
= 1 kHz, using Audio Precision™ System Two™, RMS mode with 20 kHz LPF, 400 Hz HPF in calculation. Mic amp = 0 dB, PGA =
0 dB.
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