TPA2037D1_15 Datasheet, PDF (1/20 Pages) Texas Instruments – 3.2W Mono Class-D Audio Power Amplifier With 6-dB Gain and Auto Short-Circuit Recovery

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TPA2037D1
SLOS648B – OCTOBER 2009 – REVISED JUNE 2010
3.2W Mono Class-D Audio Power Amplifier
With 6-dB Gain and Auto Short-Circuit Recovery
Check for Samples: TPA2037D1
FEATURES
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• Powerful Mono Class-D Speaker Amplifier
– 3.24 W (4 Ω, 5 V, 10% THDN)
– 2.57 W (4 Ω, 5 V, 1% THDN)
– 1.80 W (8 Ω, 5 V, 10% THDN)
– 1.46 W (8 Ω, 5 V, 1% THDN)
• +6 dB Fixed Gain
• Integrated Image Reject Filter for DAC Noise
Reduction
• Low Output Noise of 20 mV
• Low Quiescent Current of 1.5 mA
• Differential Input Impedance of 300 kΩ
• Auto-Recovering Short-Circuit Protection
• Thermal-Overload Protection
• Filter-Free Mono Class-D Amp
• 9-Ball 1,21 mm × 1,16 mm 0,4mm Pitch WCSP
APPLICATIONS
• Wireless or Cellular Handsets and PDAs
• Portable Navigation Devices
• General Portable Audio Devices
DESCRIPTION
The TPA2037D1 is a 3.2 W high efficiency filter-free
class-D audio power amplifier (class-D amp) with
6 dB of fixed gain in a 1.21 mm x 1.16 mm wafer chip
scale package (WCSP). The device requires only one
external component.
Features like 95% efficiency, 1.5 mA quiescent
current, 0.1 mA shutdown current, 81-dB PSRR,
20 mV output noise, and improved RF immunity make
the TPA2037D1 class-D amplifier ideal for cellular
handsets. A start-up time of 4 ms with no audible pop
makes the TPA2037D1 ideal for PDA and
smart-phone applications.
APPLICATION CIRCUIT
Internal
Oscillator
IN+
+
PWM
–
IN-
To battery
V_DD
Cs
V_O-
H-Bridge
V_O+
EN
Bias
Circuitry
GND
TPA 2037 D1
TPA 2037D1
9-BALL 0.4mm PITCH
WAFER CHIP SCALE PACKAGE (YFF)
(TOP VIEW OF PCB)
IN+
GND
V_O-
A1
A2
A3
VDD
PVDD
PGND
B1
B2
B3
IN-
EN
V_O+
C1
C2
C3
1.214 mm
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of 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.
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