Datasheet

PCM3008
SLAS332 – APRIL 2001
5
www.ti.com
electrical characteristics, all specifications at T
A
= 25°C, V
CC
= 2.4 V, f
s
= 44.1 kHz,
system clock = 384f
s
, f
IN
= 1 kHz, 16-bit data, (unless otherwise noted)
PCM3008T
PARAMETER TEST CONDITIONS
MIN TYP MAX
UNIT
DIGITAL INPUT/OUTPUT
V
IH
(3)
0.7 V
CC
3.6
V
IL
(3)
Input logic level
0.3V
CC
VDC
I
IN
(3)
Input logic current ±10 µA
V
OH
(4)
I
O
= –400 µA V
CC
–0.2
V
OL
(4)
Output logic level
I
O
= 400 µA 0.2
VDC
CLOCK FREQUENCY
Sampling frequency 8 44.1 48 kHz
256 f
s
2.0480 11.2896 12.2880
f
s
System clock frequency
384 f
s
3.0720 16.9344 18.4320
MHzSystem clock frequency
512 f
s
4.0960 22.5792 24.5760
MHz
ADC CHARACTERISTICS
Resolution 16 Bits
DC ACCURACY
Gain mismatch channel to channel ±1 ±5
Gain error ±2 ±10
% of
Bipolar zero error ±0
FSR
DYNAMIC PERFORMANCE
(5)
V
IN
= –0.5 dB –84 –74
THD+N
V
IN
= –60 dB
–26
Dynamic range A-weighted 82 88
dB
S/N ratio A-weighted 82 88
dB
Channel separation 80 86
ANALOG INPUT
Input voltage 0.6 V
CC
V
p–p
Center voltage 0.5 V
CC
V
Input impedance 30 kΩ
–3 dB 150 kHz
Antialiasing filter frequency response
f
IN
= 20 kHz
–0.08 dB
DIGITAL FILTER PERFORMANCE
Passband 0.454 f
s
Stopband 0.583 f
s
Hz
Passband ripple ±0.05
Stopband attenuation –65
dB
Delay time 17.4 f
s
s
HPF frequency response –3 dB 0.078 f
s
mHz
DAC CHARACTERISTICS
Resolution 16 Bits
NOTES: 3. Pins 6, 7, 9, 10–14: DEM0, DEMI, DIN, LRCK, SYSCK, BCK, PDAD, PDDA, (Schmitt trigger input, 3.3 V tolerant.
4. Pin 8: DOUT
5. f
IN
= 1 kHz, using audio precision system II, RMS mode with 20 kHz LPF, 400 Hz HPF in calculation.