Datasheet

PCM9211
www.ti.com SBAS495 –JUNE 2010
ELECTRICAL CHARACTERISTICS: Analog-to-Digital Converter (ADC)
All specifications at T
A
= +25°C, V
CC
= V
DD
= V
DDRX
= 3.3 V, and V
CCAD
= 5 V, unless otherwise noted.
PCM9211
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
ADC, CHARACTERISTICS
Resolution 16 24 Bits
f
S
Sampling frequency 16 96 kHz
Bit clock frequency 64f
S
1.024 6.144 MHz
256f
S
4.096 24.576 MHz
System clock frequency
512f
S
8.192 24.576 MHz
ADC, ANALOG INPUT
Full-scale input voltage V
IN
L, V
IN
R = 0 dB 0.6 V
CCAD
V
PP
Center voltage 0.5 V
CCAD
V
Input Impedance 10 kΩ
Antialiasing filter response –3 dB 300 kHz
ADC, DC ACCURACY
Gain mismatch, channel to
Full-scale input, V
IN
L, V
IN
R 2.0 ±8.0 % of FSR
channel
Gain error Full-scale input, V
IN
L, V
IN
R ±2.0 ±8.0 % of FSR
Bipolar zero error HPF bypass, V
IN
L, V
IN
R ±0.5 ±2.0 % of FSR
ADC, DYNAMIC PERFORMANCE
f
S
= 48 kHz –93 –85 dB
THD+N V
IN
= –1 dB
f
S
= 96 kHz –93 dB
f
S
= 48 kHz, A-weighted 95 99 dB
Dynamic range
f
S
= 96 kHz, A-weighted 101 dB
f
S
= 48 kHz, A-weighted 95 99 dB
S/N ratio
f
S
= 96 kHz, A-weighted 101 dB
f
S
= 48 kHz 92 96 dB
Channel separation (between
L-ch and R-ch)
f
S
= 96 kHz 98 dB
ADC, DIGITAL FILTER PERFORMANCE
Passband 0.454 f
S
Hz
Stop band 0.583 f
S
Hz
Passband ripple < 0.454 f
S
±0.05 dB
Stop band attenuation > 0.583 f
S
–65 dB
Group delay time 17.4 / f
S
sec
0.019 f
S
/
HPF frequency response –3 dB Hz
1000
ADC, COMMON VOLTAGE OUTPUT
V
COM
output voltage 0.5 V
CCAD
V
V
COM
output impedance 7 12.5 18 kΩ
Allowable V
COM
output
±1 mA
source/sink current
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Product Folder Link(s): PCM9211