Texas Instruments PCM2706 Evaluation Module PCM2706EVM-U PCM2706EVM-U 데이터 시트
제품 코드
PCM2706EVM-U
SBFS036A – AUGUST 2011 – REVISED JULY 2012
ELECTRICAL CHARACTERISTICS
All specifications at T
A
= +25°C, V
BUS
= 5 V, f
S
= 44.1 kHz, f
IN
= 1 kHz, and 16-bit data (unless otherwise noted).
PCM2704CDB, PCM2705CDB
PCM2706CPJT, PCM2707CPJT
PARAMETER
TEST CONDITIONS
UNIT
MIN
TYP
MAX
DIGITAL INPUT/OUTPUT
Host interface
Apply USB revision 1.1, full-speed
Audio data format
USB isochronous data format
INPUT LOGIC
V
IH
2
3.3
V
IL
–0.3
0.8
Input logic level
V
DC
V
IH
(1)
2
5.5
V
IL
(1)
–0.3
0.8
I
IH
(2)
V
IN
= 3.3 V
±10
I
IL
(2)
V
IN
= 0 V
±10
Input logic current
μ
A
I
IH
V
IN
= 3.3 V
65
100
I
IL
V
IN
= 0 V
±10
OUTPUT LOGIC
V
OH
(3)
I
OH
= –2 mA
2.8
V
OL
(3)
I
OL
= 2 mA
0.3
Output logic level
V
DC
V
OH
I
OH
= –2 mA
2.4
V
OL
I
OL
= 2 mA
0.4
CLOCK FREQUENCY
Input clock frequency, XTI
11.994
12
12.006
MHz
f
S
Sampling frequency
32, 44.1, 48
kHz
DAC CHARACTERISTICS
Resolution
16
Bits
Audio data channel
1, 2
Channel
DC ACCURACY
Gain mismatch, channel-to-channel
±2
±8
% of FSR
Gain error
±2
±8
% of FSR
Bipolar zero error
±3
±6
% of FSR
DYNAMIC PERFORMANCE
(4)
R
L
> 10 k
Ω
, self-powered,
0.006
0.01
%
V
OUT
= 0 dB
Line
(5)
Total harmonic
R
L
> 10 k
Ω
, bus-powered,
THD+N
0.012
0.02
%
distortion + noise
V
OUT
= 0 dB
R
L
= 32
Ω
, self-/
Headphone
0.025
%
bus-powered, V
OUT
= 0 dB
THD+N
Total harmonic distortion + noise
V
OUT
= –60 dB
2
%
Dynamic range
EIAJ, A-weighted
90
98
dB
SNR
Signal-to-noise ratio
EIAJ, A-weighted
90
98
dB
Channel separation
60
70
dB
(1)
HOST pin.
(2)
D+, D–, HOST, TEST, TEST0, TEST1, DT, PSEL, FSEL, XTI pins.
(3)
FUNC0, FUNC1, FUNC2 pins.
(4)
f
IN
= 1 kHz, using the System Two™ Cascade audio measurement system by Audio Precision™ in RMS mode with a 20-kHz low-pass
filter (LPF) and 400-Hz high-pass filter (HPF).
(5)
THD+N performance varies slightly, depending on the effective output load, including dummy load R7, R8 in
Copyright © 2011–2012, Texas Instruments Incorporated
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