TLC320AD80 Datasheet, PDF (25/37 Pages) Texas Instruments – Audio Processor Subsystem

3.3.2 Volume Control and Output Drivers Performance, T_A = 25°C,
AV_DD = DV_DD = 5 V ± 5%
PARAMETER
TEST CONDITIONS
MIN TYP
Range
Total continuous control range
68
Step resolution Differential error
0.5
1
Volume control
Volume integral Deviation from ideal volume
error
setting
±2
Gain tracking
Left and right channel gain
matching
±1
Mute
attenuation
Relative to volume setting of 0 dB
–80 –90
Full-scale output voltage
All analog audio outputs,
maximum volume
2.66 2.8
Common mode output voltage
All analog audio outputs
2.1 2.25
Output resistance (open loop)
All analog audio outputs
300
Short circuit protected, AUDIO
RIGHT, AUDIO LEFT, MUX OUT
600
Ouput load
resistance
Short circuit protected, AUDIO
MONO, EXT OUTR,
10
Output drive
EXT OUTL
capability
Short circuit protected, AUDIO
Ouput load
capacitance
RIGHT, AUDIO LEFT
Short circuit protected, AUDIO
MONO, EXT OUTR,
EXT OUTL, MUX OUT
Vref Output reference voltage
Output reference current
2.1 2.25
100
EXT OUTL,
Audio channel _{EXT OUTR}
80
separation
(relative to 0 dB) ^{AUDIO LEFT,}
AUDIO RIGHT
80
MAX
1.5
UNITS
dB
dB
dB
dB
dB
2.94 VPP
2.4 V
Ω
Ω
kΩ
300 pF
100 pF
2.4 V
µA
dB
dB
3.3.3 Monaural Decoder Performance, T_A = 25°C, AV_DD = DV_DD = 5 V ± 5%, f_s = 32 kHz
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNITS
3-dB Bandwidth
TV BASEBAND P or TV
BASEBAND M inputs only,
MCLK = 256 x 32 kHz or
384 x 32 kHz
14
kHz
Signal-to-noise ratio (SNR)
Total harmonic distortion (THD)
–3-dB Passband
A-weighted,
referenced to –3 dB,
fs = 50 Hz to 14 kHz
A-weighted,
referenced to –3 dB,
fs = 50 Hz to 14 kHz
54
dB
50
dB
14
kHz
BTSC filter
Passband ripple
Stopband
TV baseband input filter
referenced to 0 dB
±0.5
15.73425
dB
kHz
Stopband rejection
–44 –50
dB
3–3