Datasheet
SLES071B − MARCH 2003 − REVISED NOVEMBER 2006
www.ti.com
3
ELECTRICAL CHARACTERISTICS (Continued)
all specifications at T
A
= 25°C, V
CC
= 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
PCM1791ADB
UNIT
PARAMETER
TEST CONDITIONS
MIN TYP MAX
UNIT
DIGITAL INPUT/OUTPUT
Logic family TTL compatible
V
IH
Input logic level
2
VDC
V
IL
Input logic level
0.8
VDC
I
IH
Input logic current
V
IN
= V
DD
10
A
I
IL
Input logic current
V
IN
= 0 V –10
µ
A
V
OH
Output logic level
I
OH
= –2 mA 2.4
VDC
V
OL
Output logic level
I
OL
= 2 mA 0.4
VDC
I
OHZ
High-impedance output logic current
(1)
V
OUT
= V
DD
10
A
I
OLZ
High-impedance output logic current
(1)
V
OUT
= 0 V −10
µ
A
DYNAMIC PERFORMANCE (PCM MODE)
(2)
f
S
= 44.1 kHz 0.001% 0.002%
THD+N at V
OUT
= 0 dB
f
S
= 96 kHz 0.0015%
THD+N at V
OUT
= 0 dB
f
S
= 192 kHz 0.003%
EIAJ, A-weighted, f
S
= 44.1 kHz 110 113
Dynamic range
EIAJ, A-weighted, f
S
= 96 kHz 113
dB
Dynamic range
EIAJ, A-weighted, f
S
= 192 kHz 113
dB
EIAJ, A-weighted, f
S
= 44.1 kHz 110 113
Signal-to-noise ratio
EIAJ, A-weighted, f
S
= 96 kHz 113
dB
Signal-to-noise ratio
EIAJ, A-weighted, f
S
= 192 kHz 113
dB
f
S
= 44.1 kHz 106 110
Channel separation
f
S
= 96 kHz 110
dB
Channel separation
f
S
= 192 kHz 109
dB
Level linearity error V
OUT
= –120 dB ±1 dB
DYNAMIC PERFORMANCE (DSD MODE)
(2)
(3)
THD+N at V
OUT
= 0 dB 2.1 V rms 0.001%
Dynamic range –60 dB, EIAJ, A-weighted 113 dB
Signal-to-noise ratio EIAJ, A-weighted 113 dB
ANALOG OUTPUT
Gain error –8 ±3 8 % of FSR
Gain mismatch, channel-to-channel –3 ±0.5 3 % of FSR
Bipolar zero error At BPZ –2 ±0.5 2 % of FSR
Differential output voltage
(4)
Full scale (0 dB) 3.2 V p-p
Bipolar zero voltage
(4)
At BPZ 1.4 V
Load impedance
(4)
R
1
= R
2
1.7 kΩ
(1)
MDO pin
(2)
Dynamic performance and DC accuracy are specified at the output of the postamplifier as shown in Figure 36. Analog performance specifications
are measured using the System Twot Cascade audio measurement system by Audio Precisiont in the averaging mode. For all
sampling-frequency operations, measurement bandwidth is limited with a 20-kHz AES17 filter.
(3)
Analog performance in the DSD mode is specified as the DSD modulation index of 100%. This is equivalent to PCM−mode performance at
44.1 kHz and 64 f
S
.
(4)
These parameters are defined at the PCM1791A output pins. Load impedances, R
1
and R
2
, are input resistors of the postamplifier. They are
defined as dc loads.
Audio Precision and System Two are trademarks of Audio Precision, Inc.
Other trademarks are the property of their respective owners.