PCM2704C_14 Datasheet, PDF (3/41 Pages) Texas Instruments – Stereo Audio DAC with USB Interface Single-Ended Headphone Output and S/PDIF Output

PCM2704C, PCM2705C
PCM2706C, PCM2707C
www.ti.com
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).
PARAMETER
TEST CONDITIONS
PCM2704CDB, PCM2705CDB
PCM2706CPJT, PCM2707CPJT
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
V_IL
V_IH ⁽¹⁾
V_IL ⁽¹⁾
I_IH ⁽²⁾
I_IL ⁽²⁾
I_IH
Input logic level
Input logic current
I_IL
OUTPUT LOGIC
V_OH ⁽³⁾
V_OL ⁽³⁾
V_OH
Output logic level
V_OL
CLOCK FREQUENCY
V_IN = 3.3 V
V_IN = 0 V
V_IN = 3.3 V
V_IN = 0 V
I_OH = –2 mA
I_OL = 2 mA
I_OH = –2 mA
I_OL = 2 mA
2
3.3
–0.3
0.8
2
5.5
–0.3
0.8
±10
±10
65
100
±10
2.8
0.3
2.4
0.4
Input clock frequency, XTI
11.994
12
12.006
f_S
Sampling frequency
DAC CHARACTERISTICS
32, 44.1, 48
Resolution
16
Audio data channel
1, 2
DC ACCURACY
Gain mismatch, channel-to-channel
±2
±8
Gain error
±2
±8
Bipolar zero error
DYNAMIC PERFORMANCE ⁽⁴⁾
±3
±6
THD+N
Total harmonic
distortion + noise
Line ⁽⁵⁾
Headphone
THD+N Total harmonic distortion + noise
Dynamic range
R_L > 10 kΩ, self-powered,
V_OUT = 0 dB
R_L > 10 kΩ, bus-powered,
V_OUT = 0 dB
R_L = 32 Ω, self-/
bus-powered, V_OUT = 0 dB
V_OUT = –60 dB
EIAJ, A-weighted
0.006
0.01
0.012
0.02
0.025
2
90
98
SNR Signal-to-noise ratio
EIAJ, A-weighted
90
98
Channel separation
60
70
UNIT
V_DC
μA
V_DC
MHz
kHz
Bits
Channel
% of FSR
% of FSR
% of FSR
%
%
%
%
dB
dB
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 Figure 34.
Copyright © 2011–2012, Texas Instruments Incorporated
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Product Folder Link(s): PCM2704C PCM2705C PCM2706C PCM2707C