TPA6205A1_17 Datasheet, PDF (1/38 Pages) Texas Instruments – 1.25-W Mono Fully Differential Audio Power Amplifier With 1.8-V Input logic Thresholds

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SLOS490TPA6205A1
SLOS490C – JULY 2006 – REVISED NOVEMBER 2015
TPA6205A1 1.25-W Mono Fully Differential Audio Power Amplifier
With 1.8-V Input logic Thresholds
1 Features
•1 1.25 W Into 8-Ω From a 5-V Supply at THD = 1%
(Typical)
• Shutdown Pin has 1.8-V Compatible Thresholds
• Low Supply Current: 1.7 mA Typical
• Shutdown Current < 10 µA
• Only Five External Components
– Improved PSRR (90 dB) and Wide Supply
Voltage (2.5 V to 5.5 V) for Direct Battery
Operation
– Fully Differential Design Reduces RF
Rectification
– Improved CMRR Eliminates Two Input
Coupling Capacitors
– C_(BYPASS) Is Optional Due to Fully Differential
Design and High PSRR
• Available in 3-mm × 3-mm QFN Package (DRB)
• Available in an 8-Pin PowerPAD™ MSOP (DGN)
• Available in a 2-mm × 2-mm MicroStar Junior™
BGA Package (ZQV)
2 Applications
• Designed for Wireless Handsets, PDAs, and
Other Mobile Devices
• Compatible With Low Power (1.8-V Logic) I/O
Threshold Control Signals
3 Description
The TPA6205A1 device is a 1.25-W mono fully
differential amplifier designed to drive a speaker with
at least 8-Ω impedance while consuming less than 37
mm2 (ZQV package option) total printed-circuit-board
(PCB) area in most applications. This device operates
from 2.5 V to 5.5 V, drawing only 1.7 mA of quiescent
supply current. The TPA6205A1 is available in the
space-saving 2-mm × 2-mm MicroStar Junior BGA
package, and the space saving 3-mm × 3-mm QFN
(DRB) package.
Features like 85-dB PSRR from 90 Hz to 5 kHz,
improved RF-rectification immunity, and small PCB
area makes the TPA6205A1 ideal for wireless
handsets. A fast start-up time of 4s with minimal pop
makes the TPA6205A1 ideal for PDA applications.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
MSOP-PowerPAD (8) 3.00 mm × 3.00 mm
TPA6205A1
SON (8)
BGA MICROSTAR
JUNIOR (8)
3.00 mm × 3.00 mm
2.00 mm × 2.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Application Circuit
R_F
In From
DAC
- ^RI
+ ^RI
R_F
SHUTDOWN
C_(BYPASS)
(Optional)
V_DD
IN- _{_}
V_O+
IN+ ₊
V_O-
GND
Bias
Circuitry
To Battery
C_s
Example Solution Size
Actual Solution Size
R_F
(1)_CB
R_I
R_I
C_S
5,25 mm
R_F
6,9 mm
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.