TS4962 Datasheet, PDF (1/22 Pages) STMicroelectronics – 3W Filter-free Class D Audio Power Amplifier

TS4962
3W Filter-free Class D Audio Power Amplifier
■ Operating from Vcc=2.4V to 5.5V
■ Standby mode active low
■ Output power: 3W into 4Ω and 1.75W into 8Ω
with 10% THD+N max and 5V power supply.
■ Output power: 2.3W @5V or 0.75W @ 3.0V
into 4Ω with 1% THD+N max.
■ Output power: 1.4W @5V or 0.45W @ 3.0V
into 8Ω with 1% THD+N max.
■ Adjustable gain via external resistors
■ Low current consumption 2mA @ 3V
■ Efficiency: 88% typ.
■ Signal to noise ratio: 85dB typ.
■ PSRR: 63dB typ. @217Hz with 6dB gain
■ PWM base frequency: 250kHz
■ Low pop & click noise
■ Thermal shutdown protection
■ Available in flip-chip 9 x 300um in lead free*
Description
PRELIMINARY DATA
Pin Connections (top view)
TS4962EIJT
IN₊
1/A1
GND
2/A2
OUT_-
3/A3
V_DD
4/B1
V_DD
5/B2
GND
6/B3
IN_-
STBY
OUT₊
7/C1
8/C2
9/C3
IN+: positive differential input
IN-: negative differential input
VDD: analog power supply
GND: power supply ground
STBY: standby pin (active low)
OUT+: positive differential output
OUT-: negative differential output
The TS4962 is a differential class-D B.T.L. power
amplifier. Able to drive up to 2.3W into a 4Ω load
and 1.4W into a 8Ω load at 5V. It achieves
outstanding efficiency (88%typ.) compared to
classical AB-class audio amps.
Gain of the device can be controlled via two
external gain setting resistors. POP & CLICK
reduction circuitry provides low on/off switch noise
while allowing the device to start within 5ms.A
standby function (active low) allows to lower the
current consumption to 10nA typ.
Applications
■ Cellular Phone
■ PDA
■ Notebook PC
Block Diagram
C2 ^Stdby Internal
Bias
150k
B1
B2
Vcc
Out+
C3
C1
-
In-
In+ ₊
A1
PWM
Output
H
Bridge
150k
A3
Out-
Oscillator
GND
A2
B3
Order Codes
Part Number
TS4962IJT
TS4962EIJT
TS4962EKIJT
Temperature Range
-40, +85°C
-40, +85°C
-40, +85°C
Package
Flip-Chip
Lead -Free Flip-Chip
Lead Free + Back
Coating
Packaging
Tape & Reel
Marking
A62
A62
A62
February 2005
Revision 2
1/22
This product preview information shows the electrical and mechanical performances of a finalized product. However, details could still be modified.