Datasheet

www.ti.com
ELECTRICAL CHARACTERISTICS
PCM1801
SBAS131C – OCTOBER 2000 – REVISED JULY 2007
All specifications at T
A
= 25 ° C, V
DD
= V
CC
= 5 V, f
S
= 44.1 kHz, 16-bit data, and SYSCLK = 384 f
S
, unless otherwise noted.
PCM1801U
PARAMETER TEST CONDITIONS
MIN TYP MAX UNITS
RESOLUTION 16 Bits
DIGITAL INPUT/OUTPUT
V
IH
(1)
2
Input logic level VDC
V
IL
(1)
0.8
I
IN
(2)
± 10
Input logic current μ A
I
IN
(3)
100
V
OH
(4)
I
OH
= –1.6 mA 4.5
Output logic level VDC
V
OL
(4)
I
OL
= 3.2 mA 0.5
f
S
Sampling frequency 4 44.1 48 kHz
256 f
S
1.024 11.2896 12.288
System clock frequency 384 f
S
1.536 16.9344 18.432 MHz
512 f
S
2.048 22.5792 24.576
DC ACCURACY
Gain mismatch, channel-to-channel ± 1 ± 2.5 % of FSR
Gain error ± 2 ± 5 % of FSR
Gain drift ± 20 ppm of FSR/ ° C
Bipolar zero error High-pass filter bypassed ± 2 % of FSR
Bipolar zero drift High-pass filter bypassed ± 20 ppm of FSR/ ° C
DYNAMIC PERFORMANCE
(5)
FS (–0.5 dB) –88 –80
THD+N dB
–60 dB –90
Dynamic range A-weighted 90 93 dB
Signal-to-noise ratio A-weighted 90 93 dB
Channel separation 87 90 dB
ANALOG INPUT
Input range FS (V
IN
= 0 dB) 2.828 Vp-p
Center voltage 2.1 V
Input impedance 30 k Ω
Antialiasing filter frequency response –3 dB 150 kHz
DIGITAL FILTER PERFORMANCE
Pass band 0.454 f
S
Hz
Stop band 0.583 f
S
Hz
Pass-band ripple ± 0.05 dB
Stop-band attenuation –65 dB
Delay time (latency) 17.4/f
S
s
High-pass frequency response –3 dB 0.019 f
S
mHz
(1) Pins 5, 6, 7, 9, and 10 (SCKI, BCK, LRCK, BYPAS, and FMT)
(2) Pins 5, 6, 7 (SCKI, BCK, LRCK) Schmitt-trigger input
(3) Pins 9, 10 (BYPAS, FMT) Schmitt-trigger input with 100-k Ω typical pulldown resistor
(4) Pin 8 (DOUT)
(5) f
IN
= 1 kHz, using the System Two™ audio measurement system by Audio Precision™ in rms mode with 20-kHz LPF and 400-Hz HPF
in the performance calculation.
4
Submit Documentation Feedback