PCM1794A-Q1 Datasheet, PDF (6/34 Pages) Texas Instruments – Audio Stereo Digital-to-Analog Converter

PCM1794A-Q1
SLES276A – NOVEMBER 2015 – REVISED DECEMBER 2015
www.ti.com
Electrical Characteristics (continued)
all specifications at T_A = 25°C, V_CC1 = V_CC2L = V_CC2R = 5 V, V_DD = 3.3 V, f_S = 44.1 kHz, system clock = 256 f_S, and 24-bit
data, unless otherwise noted
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
EIAJ, A-weighted, f_S = 44.1 kHz
123
127
Signal-to-noise ratio
EIAJ, A-weighted, f_S = 96 kHz
127
dB
EIAJ, A-weighted, f_S = 192 kHz
127
f_S = 44.1 kHz
120
123
Channel separation
f_S = 96 kHz
122
dB
f_S = 192 kHz
120
Level linearity error
V_OUT = –120 dB
DYNAMIC PERFORMANCE (4.5-V RMS Output)⁽¹⁾⁽³⁾
±1
dB
THD+N at V_OUT = 0 dB
Dynamic range
Signal-to-noise ratio
Channel separation
DYNAMIC PERFORMANCE (MONO MODE)⁽¹⁾⁽³⁾
f_S = 44.1 kHz
f_S = 96 kHz
f_S = 192 kHz
EIAJ, A-weighted, f_S = 44.1 kHz
EIAJ, A-weighted, f_S = 96 kHz
EIAJ, A-weighted, f_S = 192 kHz
EIAJ, A-weighted, f_S = 44.1 kHz
EIAJ, A-weighted, f_S = 96 kHz
EIAJ, A-weighted, f_S = 192 kHz
f_S = 44.1 kHz
f_S = 96 kHz
f_S = 192 kHz
0.0004%
0.0008%
0.0015%
129
129
dB
129
129
129
dB
129
124
123
dB
121
THD+N at V_OUT = 0 dB
Dynamic range
Signal-to-noise ratio
ANALOG OUTPUT
f_S = 44.1 kHz
f_S = 96 kHz
f_S = 192 kHz
EIAJ, A-weighted, f_S = 44.1 kHz
EIAJ, A-weighted, f_S = 96 kHz
EIAJ, A-weighted, f_S = 192 kHz
EIAJ, A-weighted, f_S = 44.1 kHz
EIAJ, A-weighted, f_S = 96 kHz
EIAJ, A-weighted, f_S = 192 kHz
0.0004%
0.0008%
0.0015%
132
132
dB
132
132
132
dB
132
Gain error
–6
±2
6 % of FSR
Gain mismatch, channel-to-channel
–3
±0.5
3 % of FSR
Bipolar zero error
At BPZ
–2
±0.5
2 % of FSR
Output current
Full scale (0 dB)
7.8
mA p-p
Center current
At BPZ
–6.2
mA
DIGITAL FILTER PERFORMANCE
De-emphasis error
±0.004
dB
FILTER CHARACTERISTICS-1: SHARP ROLLOFF
Pass band
Stop band
Pass-band ripple
±0.00001 dB
–3 dB
0.546 f_S
0.454 f_S
0.49 f_S
±0.00001
dB
Stop-band attenuation
Delay time
FILTER CHARACTERISTICS-2: SLOW ROLLOFF
Stop band = 0.546 f_S
–130
dB
55/f_S
s
Pass band
±0.04 dB
–3 dB
0.254 f_S
0.46 f_S
(3) Dynamic performance and dc accuracy are specified at the output of the postamplifier as shown in Figure 26.
6
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