TAS2560 Datasheet, PDF (1/80 Pages) Texas Instruments – 5.6-W Class-D Mono Audio Amplifier with IV Sense

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TAS2560
SLASE86B – JUNE 2016 – REVISED AUGUST 2016
TAS2560 5.6-W Class-D Mono Audio Amplifier with IV Sense
1 Features
•1 Ultra Low-Noise Mono Boosted Class-D Amplifier
– 5.6 W at 1% THD+N and 6.9 W at 10%
THD+N into 4-Ω Load from 4.2-V Supply
– 3.7 W at 1% THD+N and 4.5 W at 10%
THD+N into 8-Ω Load from 4.2-V Supply
• Output Noise for DAC + Class-D(ICN) is 16.2 μV
• DAC + Class-D SNR 111 dB at 1%THD+N / 8 Ω
• THD+N –89 dB at 1 W / 8 Ω with Flat Frequency
Response
• Post-Filter Feedback (PFFB)
• PSRR 110 dB for 200 mVpp Ripple at 217 Hz
• Input Sample Rates from 8 kHz to 96 kHz
• High Efficiency Class-H Boost Converter
– Automatically Adjusts Class-D Supply
– Multi-level Tracking to Improve Efficiency
• Built-In Speaker Sense
– Measures Speaker Current and Voltage
– Measures VBAT Voltage, Chip Temperature
• Built-In Automatic Gain Control (AGC)
– Limits Battery Current Consumption
• Adjustable Class-D Switching Edge-Rate Control
• Power Supplies
– Boost Input: 2.9 V to 5.5 V
– Analog/Digital: 1.65 V to 1.95 V
– Digital I/O: 1.62 V to 3.6 V
• Thermal, Short-Circuit, and Under-Voltage
Protection
• I2S, Left-Justified, Right-Justified, DSP, and TDM,
and PDM
• I2C Interface for Register Control
• Stereo Configuration Using Two TAS2560
Devices
2 Applications
• Mobile Phones
• Tablets
• Personal Electronics
• Building / Home Automation
• Bluetooth Speakers and Accessories
3 Description
The TAS2560 is a low-power, high-performance,
digital input, boosted Class-D Audio amplifier that can
be easily implemented in both mono and stereo (x2)
applications. The device features an ultra low-noise
audio DAC and Class-D power amplifier which
incorporates speaker voltage and current sensing
feedback for use with speaker protection algorithms.
A Class-H boost converter generates the Class-D
amplifier supply rail. When the audio signal requires
only a lower Class-D output power, system efficiency
is improved by deactivating the boost and connecting
VBAT directly to the Class-D amplifier supply. When
higher audio output power is required, the multi-level
boost re-activates tracking the signal to provide the
additional voltage to the load.
A configurable on-chip Battery Guard system reduces
the audio output power during the periods of low
battery voltage to minimize the battery dropping
below system brownout conditions. Additionally, faults
such as brownout, over-current, and over-
temperature can be reported back to the host
processor using the IRQ pin. All protection statuses
are available via a register read.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TAS2560
WCSP (30)
2.80 mm x 2.60 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Simplfied Schematic
L1
MCLK
I2S
4
I2C
2
/RESET
VBAT
2 SW
C1
VREG
TAS2560
VBOOST
2
C2
Ferrite bead
(optional)
SPK_P
+
SPK_N
To Speaker
-
Ferrite bead
(optional)
VSENSE_P
VSENSE_N
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.