TPA2038D1_15 Datasheet, PDF (1/23 Pages) Texas Instruments – 3.2 W Mono Class-D Audio Power Amplifier With Selectable Gain and Auto-Recovering Short-Circuit Protection

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TPA2038D1
SLOS697A – AUGUST 2011 – REVISED OCTOBER 2012
3.2 W Mono Class-D Audio Power Amplifier With
Selectable Gain and Auto-Recovering Short-Circuit Protection
Check for Samples: TPA2038D1
FEATURES
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• Filter-Free Mono Class-D Speaker Amp
• GAIN Pin Selects Between 6 dB and 12 dB
• 3.2 W into 4 Ω from 5 V supply at 10% THD+N
• Powerful Mono Class-D Speaker Amplifier
– 1% at 1.4 W into 8 Ω from 5 V Supply
– 1% at 2.5 W into 4 Ω from 5 V Supply
• Integrated Image Reject Filter for DAC Noise
Reduction
• Low Output Noise of 20 μV
• Low Quiescent Current of 1.5 mA
• Auto-Recovering Short-Circuit Protection
• Thermal-Overload Protection
• 9-Ball 1,21 mm × 1,16 mm 0,4 mm Pitch WCSP
APPLICATIONS
• Wireless or Cellular Handsets and PDAs
• Portable Navigation Devices
• General Portable Audio Devices
DESCRIPTION
The TPA2038D1 is a 3.2 W into 4-ohm (10% THD)
high efficiency filter-free class-D audio power
amplifier. The GAIN pin sets gain to either 6 dB or
12 dB.
Features like 95% efficiency, 1.5 mA quiescent
current, 0.5 μA shutdown current, 81 dB PSRR,
20 μV output noise, and improved RF immunity make
the TPA2038D1 class-D amplifier ideal for cellular
handsets. A start-up time is within 4 ms with no turn-
on pop.
The TPA2038D1 is available in a 1.21 mm x
1.16 mm, 0.4 mm pitch wafer chip scale package
(WCSP).
APPLICATION CIRCUIT
GAIN
Gain Select
IN+
+
–
IN-
Internal
Oscillator
PWM
EN
Bias
Circuitry
To battery
V_DD
Cs
V_O-
H-Bridge
V_O+
GND
TPA 2038D1
9-BALL 0.4mm PITCH
WAFER CHIP SCALE PACKAGE (YFF)
(TOP VIEW OF PCB)
IN+
GAIN
V_O-
A1
A2
A3
VDD
PVDD
PGND
B1
B2
B3
TPA 2038 D1
IN-
EN
V_O+
C1
C2
C3
1.214 mm
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2011–2012, Texas Instruments Incorporated