Datasheet
www.ti.com
ELECTRICAL CHARACTERISTICS
PCM1802
SLES023C – DECEMBER 2001 – REVISED JANUARY 2005
all specifications at T
A
= 25 ° C, V
CC
= 5 V, V
DD
= 3.3 V, master mode, f
S
= 44.1 kHz, system clock = 384 f
S
, oversampling ratio
= × 128, 24-bit data (unless otherwise noted)
PCM1802DB
TEST CONDITIONS UNIT
MIN TYP MAX
Resolution 24 Bits
DATA FORMAT
Left-justified, I
2
S,
Audio data interface format
right-justified
Audio data bit length 20, 24 Bits
Audio data format MSB first, 2s complement
f
S
Sampling frequency 16 44.1 96 kHz
256 f
S
4.096 11.2896 24.576
384 f
S
6.144 16.9344 36.864
System clock frequency MHz
512 f
S
8.192 22.5792 49.152
768 f
S
12.288 33.8688
(1)
INPUT LOGIC
V
IH
(2)
2 V
DD
V
IL
(2)
0 0.8
Input logic level VDC
V
IH
(3)
2 5.5
V
IL
(3)
0 0.8
I
IH
(4)
V
IN
= V
DD
± 10
I
IL
(4)
V
IN
= 0 V ± 10
Input logic current µ A
I
IH
(5)
V
IN
= V
DD
65 100
I
IL
(5)
V
IN
= 0 V ± 10
OUTPUT LOGIC
V
OH
(6)
I
OUT
= –1 mA 2.8
Output logic level VDC
V
OL
(6)
I
OUT
= 1 mA 0.5
DC ACCURACY
Gain mismatch, channel-to-channel ± 1 ± 4 %FSR
Gain error ± 2 ± 6 %FSR
Bipolar zero error HPF bypassed
(7)
± 2 %FSR
DYNAMIC PERFORMANCE
(8)
f
S
= 44.1 kHz, V
IN
= –0.5 dB 0.0015% 0.003%
f
S
= 96 kHz, V
IN
= –0.5 dB
(9)
0.0025%
THD+N Total harmonic distortion + noise
f
S
= 44.1 kHz, V
IN
= –60 dB 0.7%
f
S
= 96 kHz, V
IN
= –60 dB
(9)
1.2%
f
S
= 44.1 kHz, A-weighted 100 105
Dynamic range dB
f
S
= 96 kHz, A-weighted
(9)
103
f
S
= 44.1 kHz, A-weighted 100 105
S/N ratio dB
f
S
= 96 kHz, A-weighted
(9)
103
(1) Maximum system clock frequency is not applicable at 768 f
S
, f
S
= 96 kHz. See the System Clock section of this data sheet.
(2) Pins 9–11: FSYNC, LRCK, BCK (Schmitt-trigger input in slave mode)
(3) Pins 7–8, 15–20: PDWN, BYPAS, SCKI, OSR, FMT0, FMT1, MODE0, MODE1 (Schmitt-trigger input, 5-V tolerant)
(4) Pins 9–11, 15: FSYNC, LRCK, BCK (Schmitt-trigger input in slave mode), SCKI (Schmitt-trigger input)
(5) Pins 7–8, 16–20: PDWN, BYPAS, OSR, FMT0, FMT1, MODE0, MODE1 (Schmitt-trigger input, with 50-k Ω typical pulldown resistor)
(6) Pins 9–12: FSYNC, LRCK, BCK (in master mode), DOUT
(7) High-pass filter
(8) Analog performance specifications are tested with System Two™ audio measurement system by Audio Precision™, using 400-Hz HPF,
20-kHz LPF for 44.1-kHz operation, 40-kHz LPF for 96-kHz operation in RMS mode.
(9) f
S
= 96 kHz, system clock = 256 f
S
, oversampling ratio = × 64.
4