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