Datasheet

PCM2912A
www.ti.com .......................................................................................................................................................................................... SLES230 – SEPTEMBER 2008
ELECTRICAL CHARACTERISTICS (continued)
All specifications at T
A
= +25 ° C, V
BUS
= 5 V, f
S
= 44.1 kHz, f
IN
= 1 kHz, and 16-bit data, unless otherwise noted.
PCM2912A
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
DIGITAL-TO-ANALOG CONVERTER (DAC) CHARACTERISTICS
Resolution 16 Bits
Audio data channel 1, 2 Channel
Sampling frequency 8, 11.025, 16, 22.05, 32, 44.1, 48 kHz
DAC Dynamic Performance
(7)
R
L
> 10 k Ω , V
OUT
= 0 dB of 0.6 V
CCA
0.01 0.02 %
Total harmonic distortion plus
THD+N
noise
R
L
= 32 Ω , V
OUT
= 0 dB of 0.55 V
CCA
0.02 0.05 %
Dynamic range EIAJ, A-Weighted 82 90 dB
SNR Signal-to-noise ratio EIAJ, A-Weighted 84 92 dB
Channel separation R
L
> 10 k Ω 80 88 dB
DAC DC Accuracy
Gain mismatch
± 2 ± 10 % of FSR
channel-to-channel
Gain error ± 2 ± 10 % of FSR
Bipolar zero error ± 3 % of FSR
Analog Output
R
L
> 10 k Ω 0.6 V
CCA
Output voltage V
PP
R
L
= 32 Ω 0.55 V
CCA
Center voltage 0.5 V
CCA
V
R
L
= 32 Ω 13
Output power mW
R
L
= 16 Ω 25
Line 10 k Ω
Load impedance (AC coupling)
Headphone 16 32 Ω
– 3 dB 140 kHz
LPF frequency response
f = 20 kHz – 0.1 dB
Sidetone Programmable Attenuator
Gain range – 76 0 dB
Gain step size 1 dB
Output Programmable Attenuator
Gain range – 76 0 dB
Gain step size 1 dB
Analog Loopback Performance
(8)
R
L
> 10 k Ω , V
IN
= 0 dB of 0.43 V
CCA
0.01 0.02 %
Total harmonic distortion plus
THD+N
noise
R
L
= 32 Ω , V
IN
= 0 dB of 0.43 V
CCA
0.02 0.05 %
Dynamic range EIAJ, A-weighted 82 90 dB
SNR Signal-to-noise ratio EIAJ, A-weighted 84 92 dB
DAC Digital Filter Performance
Passband 0.445 f
S
Hz
Stop band 0.555 f
S
Hz
Passband ripple ± 0.1 dB
Stop-band attenuation – 43 dB
Delay time 14.3/f
S
s
(7) f
OUT
= 1 kHz, using Audio Precision System Two, RMS mode with 20-kHz LPF, 400-Hz HPF. Output attenuator = 0 dB,
Sidetone = Mute.
(8) MIC Amp = 0 dB, Sidetone attenuator = 0 dB, Output attenuator = 0 dB.
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Product Folder Link(s): PCM2912A