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TAS2521 Datasheet(PDF) 7 Page - TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS

Part # TAS2521
Description  Digital Input Class-D Speaker Amplifier with Embedded miniDSP and mono headphone amplifier
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Manufacturer  TAOS [TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS]
Direct Link  http://www.taosinc.com
Logo TAOS - TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS

TAS2521 Datasheet(HTML) 7 Page - TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS

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TAS2521
www.ti.com
SLAS687A – FEBRUARY 2013 – REVISED FEBRUARY 2013
Electrical Characteristics (continued)
At 25°C, AVDD = 1.8V, IOVDD = 1.8 V, SPKVDD = 3.6 V, DVDD = 1.8 V, fS (audio) = 48 kHz, CODEC_CLKIN = 256 × fS,
PLL = Off
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
DAC OUTPUT TO CLASS-D SPEAKER OUTPUT; LOAD = 8
Ω (DIFFERENTIAL)
BTL measurement, class-D gain = 6 dB, Measured
ICN
Idle channel noise
35.2
μVms
as idle-channel noise, A-weighted(1) (2)
BTL measurement, class-D gain = 6 dB, -3dBFS
Output voltage
1.4
Vrms
input
BTL measurement, DAC input = –6 dBFS, class-D
THD+N
Total harmonic distortion + noise
–73.6
dB
gain = 6 dB
SPKVDD = 3.6 V, BTL measurement, CM = 0.9V,
0.7
class-D gain = 18 dB, THD = 10%
SPKVDD = 4.2 V, BTL measurement, CM = 0.9V,
1
class-D gain = 18 dB, THD = 10%
SPKVDD = 5.5 V, BTL measurement, CM = 0.9V,
1.7
class-D gain = 18 dB, THD = 10%
PO
Maximum output power
W
SPKVDD = 3.6 V, BTL measurement, CM = 0.9V,
0.5
class-D gain = 18 dB, THD = 1%
SPKVDD = 4.2 V, BTL measurement, CM = 0.9V,
0.8
class-D gain = 18 dB, THD = 1%
SPKVDD = 5.5 V, BTL measurement, CM = 0.9V,
1.3
class-D gain = 18 dB, THD = 1%
ANALOG BYPASS TO HEADPHONE AMPLIFIER
AC-COUPLED LOAD = 16
Ω (SINGLE-ENDED),
Device Setup
DRIVER GAIN = 0 dB, Input and output common-
mode = 0.9 V, input signal frequency fi = 1kHz
Voltage Gain
Input common-mode = 0.9 V
1
V/V
Gain Error
-1dBFS (446mVrms), 1-kHz input signal
±0.8
dB
Idle channel, IN1L and IN1R ac-shorted to ground,
ICN
Idle channel noise
10.2
μVms
Measured as idle-channel noise, A-weighted(1) (2)
THD+N
Total harmonic distortion + noise
-1 dBFS (446mVrms), 1-kHz input signal
-80.4
dB
(1)
Ratio of output level with 1-kHz full-scale sine-wave input, to the output level with the inputs short-circuited, measured A-weighted over a
20-Hz to 20-kHz bandwidth using an audio analyzer.
(2)
All performance measurements done with 20-kHz low-pass filter and, where noted, A-weighted filter. Failure to use such a filter may
result in higher THD+N and lower SNR and dynamic range readings than shown in the Electrical Characteristics. The low-pass filter
removes out-of-band noise, which, although not audible, may affect dynamic specification values.
Copyright © 2013, Texas Instruments Incorporated
ELECTRICAL SPECIFICATIONS
7
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