TPA2005D1 Datasheet, PDF (1/42 Pages) Texas Instruments – 1.1 W MONO FILTER FREE CLASS D AUDIO POWER AMPLIFIER

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
TPA2005D1
SLOS369G – JULY 2002 – REVISED OCTOBER 2015
TPA2005D1 1.4-W MONO Filter-Free Class-D Audio Power Amplifier
1 Features
•1 1.4 W Into 8 Ω From a 5 V Supply at
THD = 10% (Typ)
• Maximum Battery Life and Minimum Heat
– Efficiency With an 8-Ω Speaker:
– 84% at 400 mW
– 79% at 100 mW
– 2.8-mA Quiescent Current
– 0.5-μA Shutdown Current
• Capable of Driving an
8-Ω Speaker (2.5 V ≤ V_DD ≤ 5.5 V) and a
4-Ω Speaker (2.5 V ≤ V_DD ≤ 4.2 V)
• Only Three External Components
– Optimized PWM Output Stage Eliminates LC
Output Filter
– Internally Generated 250-kHz Switching
Frequency Eliminates Capacitor & Resistor
– Improved PSRR (–71 dB at 217 Hz) and
Wide Supply Voltage (2.5 V to 5.5 V)
Eliminates Need for a Voltage Regulator
– Fully Differential Design Reduces RF
Rectification & Eliminates Bypass Capacitor
– Improved CMRR Eliminates Two Input
Coupling Capacitors
• Space Saving Package
– 3 mm × 3 mm QFN package (DRB)
– 2.5 mm × 2.5 mm MicroStar Junior™ BGA
Package (ZQY)
– 3 mm x 5 mm MSOP PowerPAD™ Package
(DGN)
• Use TPA2006D1 for 1.8 V Logic Compatibility on
Shutdown Pin
3 Description
The TPA2005D1 is a 1.4-W high efficiency filter-free
class-D audio power amplifier in a MicroStar Junior™
BGA, QFN, or MSOP package that requires only
three external components.
Features like 84% efficiency, –71-dB PSRR
at 217 Hz, improved RF-rectification immunity, and
15 mm² total PCB area make the TPA2005D1 ideal
for cellular handsets. A fast start-up time of 9 ms with
minimal pop makes the TPA2005D1 ideal for PDA
applications.
In cellular handsets, the earpiece, speaker phone,
and melody ringer can each be driven by the
TPA2005D1. The device allows independent gain
control by summing the signals from each function
while minimizing noise to only 48 μV_RMS.
The TPA2005D1 has short-circuit and thermal
protection.
PART NUMBER
TPA2005D1
Device Information⁽¹⁾
PACKAGE
BODY SIZE (NOM)
HVSSOP (8)
3.00 mm × 3.00 mm
VSON (8)
3.00 mm x 3.00 mm
BGA MICROSTAR
JUNIOR (15)
2.50 mm x 2.50 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Device Layout and Size
Actual Solution Size
C_S
R_I
2.5 mm
R_I
2 Applications
Ideal for Wireless or Cellular Handsets and PDAs
6 mm
Application Circuit
+ ^RI
Differential
Input
– ^RI
SHUTDOWN
Internal
Oscillator
To Battery
V_DD
C_S
IN–
_
+
IN+
PWM
V_O+
H–
Bridge V_O–
Bias
Circuitry
GND
TPA2005D1
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.