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TAS2559YZR Datasheet(PDF) 7 Page - Texas Instruments

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Part # TAS2559YZR
Description  5.7-W Class-D Mono Audio Amplifier with Class-H Boost and Speaker Sense with Stereo Processing
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TAS2559YZR Datasheet(HTML) 7 Page - Texas Instruments

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7
TAS2559
www.ti.com
SLASEE8 – NOVEMBER 2016
Product Folder Links: TAS2559
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
7.5 Electrical Characteristics
VBAT = 3.6V, AVDD = DVDD = IOVDD = 1.8 V, RESET = IOVDD, Gain = 16.4 dB, ERC = 14ns, Boost Inductor = 2.2 µH, RL =
8 Ω + 33 µH, 1-kHz input frequency, 48- kHz sample rate for digital input, Class-H Boost Enabled, TA= 25°C, ILIM = 3 A
(unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
BOOST CONVERTER
Boost Output Voltage
Average voltage (w/o including ripple).
8.5
V
Boost Converter Switching Frequency
1.77
MHz
Boost Converter Current Limit
3
A
Boost Converter Max In-Rush Current
High Efficiency Mode: Max inductor inrush
and startup current after enable
4
A
Normal Efficiency Mode: Max inductor
inrush and startup current after enable
1.5
CLASS-D CHANNEL
Output Voltage for Full-Scale Digital
Input
6.6
VRMS
Load Resistance (Load Spec
Resistance)
3.6
8
Ω
Class-D Frequency
Avg Frequency in Spread-Spectrum Mode
384
kHz
Fixed Frequency
44.1 × 8
48 × 8
Class-D + Boost Efficiency
POUT = 3.5 W (sinewave) ROM Mode 1
80
%
POUT = 0.5 W (sinewave) ROM Mode 1
87
Class-D Output Current Limit (Short
Circuit Protection)
VBOOST = 8.5 V, OUT– shorted to VBAT,
VBOOST, GND
6
A
Class-D Output Offset Voltage in
Digital Input Mode
–2.5
2.5
mV
Programmable Channel Gain
Accuracy
±0.5
dB
Mute Attenuation
Device in shutdown or device in normal
operation and MUTED
150
dB
VBAT Power Supply Rejection Ratio
(PSRR)
Ripple of 200 mVpp at 217 Hz
110
dB
AVDD Power Supply Rejection Ratio
(PSRR)
Ripple of 200 mVpp at 217 Hz
99
dB
THD+N
1 kHz, POUT = 0.1 W
0.0041
%
1 kHz, Po = 0.5 W
0.0036
1 kHz, Po = 1 W
0.0035
1 kHz, Po = 3 W
0.02
Output Integrated Noise (20 Hz-20
kHz) - 8 Ω
A-wt Filter, DAC modulator switching
15.9
µV
Signal-to-noise ratio
Referenced to 1% THD+N at output, a-
weighted
110.6
dB
Max Output Power, 3-A Current Limit
THD+N=1%, 8-Ω Load
3.7
W
THD+N=1%, 6-Ω Load
4.5
THD+N=1%, 4-Ω Load
5
Startup Pop
Digital Input, A-weighted output
10
mV
Output Impedance in Shutdown
/RESET = 0 V
10
Startup Time
Time taken from end of configuring device
in ROM mode1/2 to Speaker output signal
in SPI mode running at 25 MHz with 48
ksps input
8
mS
Shutdown Time
Measured from time when device is
programmed in software shutdown mode
100
µS


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