Datasheet

www.ti.com
ELECTRICAL CHARACTERISTICS
PCM1808
SLES177A – APRIL 2006 – REVISED AUGUST 2006
All specifications at T
A
= 25 ° C, V
CC
= 5 V, V
DD
= 3.3 V, master mode, f
S
= 48 kHz, system clock = 512 f
S
, 24-bit data, unless
otherwise noted
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Resolution 24 Bits
DATA FORMAT
Audio data interface format I
2
S, left-justified
Audio data bit length 24 Bits
Audio data format MSB-first, 2s complement
f
S
Sampling frequency 8 48 96 kHz
256 f
S
2.048 12.288 24.576
System clock frequency 384 f
S
3.072 18.432 36.864 MHz
512 f
S
4.096 24.576 49.152
INPUT LOGIC
V
IH
(1)
2 V
DD
V
IL
(1)
0 0.8
Input logic level VDC
V
IH
(2) (3)
2 5.5
V
IL
(2) (3)
0 0.8
I
IH
(2)
V
IN
= V
DD
± 10
I
IL
(2)
V
IN
= 0 V ± 10
Input logic current µ A
I
IH
(1) (3)
V
IN
= V
DD
65 100
I
IL
(1) (3)
V
IN
= 0 V ± 10
OUTPUT LOGIC
V
OH
(4)
I
OUT
= –4 mA 2.8
Output logic level VDC
V
OL
(4)
I
OUT
= 4 mA 0.5
DC ACCURACY
Gain mismatch, channel-to-channel ± 1 ± 3 % of FSR
Gain error ± 3 ± 6 % of FSR
DYNAMIC PERFORMANCE
(5)
V
IN
= –0.5 dB, f
S
= 48 kHz –93 –87
V
IN
= –0.5 dB, f
S
= 96 kHz
(6)
–87
THD + N Total harmonic distortion + noise dB
V
IN
= –60 dB, f
S
= 48 kHz –37
V
IN
= –60 dB, f
S
= 96 kHz
(6)
–39
f
S
= 48 kHz, A-weighted 95 99
Dynamic range dB
f
S
= 96 kHz, A-weighted
(6)
101
f
S
= 48 kHz, A-weighted 95 99
S/N Signal-to-noise ratio dB
f
S
= 96 kHz, A-weighted
(6)
101
f
S
= 48 kHz 93 97
Channel separation dB
f
S
= 96 kHz
(6)
91
(1) Pins 7, 8: LRCK, BCK (Schmitt-trigger input, with 50-k Ω typical pulldown resistor, in slave mode)
(2) Pin 6: SCKI (Schmitt-trigger input, 5-V tolerant)
(3) Pins 10–12: MD0, MD1, FMT (Schmitt-trigger input, with 50-k Ω typical pulldown resistor, 5-V tolerant)
(4) Pins 7–9: LRCK, BCK (in master mode), DOUT
(5) Analog performance specifications are tested using a System Two™ audio measurement system by Audio Precision™ with 400-Hz HPF
and 20-kHz LPF in RMS mode.
(6) f
S
= 96 kHz, system clock = 256 f
S
.
3
Submit Documentation Feedback