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PDF TS4962M Data sheet ( Hoja de datos )
| Número de pieza | TS4962M | |
| Descripción | 3W filter-free class D audio power amplifier | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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TS4962M
3W filter-free class D audio power amplifier
Features
■ 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.
www.Data■SheOeut4tUp.uctopmower: 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 300μm (Pb-free)
Description
The TS4962M is a differential Class-D BTL power
amplifier. It is 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 Class-AB audio amps.
The 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 the reduction
of current consumption to 10nA typ.
Pin connections
IN+
1/A1
GND
2/A2
OUT-
3/A3
VDD
4/B1
VDD
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
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
Applications
■ Cellular phone
■ PDA
■ Notebook PC
January 2007
Rev 4
1/41
www.st.com
41
1 page  
TS4962M
3 Electrical characteristics
Electrical characteristics
Table 4.
Symbol
VCC = +5V, GND = 0V, VIC = 2.5V, tamb = 25°C (unless otherwise specified)
Parameter
Conditions
Min. Typ. Max.
ICC
ISTBY
VOO
Supply current
Standby current (1)
Output offset voltage
Pout Output power
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THD + N
Total harmonic
distortion + noise
Efficiency Efficiency
PSRR
Power supply
rejection ratio with
inputs grounded (2)
No input signal, no load
No input signal, VSTBY = GND
No input signal, RL = 8Ω
G=6dB
THD = 1% max, F = 1kHz, RL = 4Ω
THD = 10% max, F = 1kHz, RL = 4Ω
THD = 1% max, F = 1kHz, RL = 8Ω
THD = 10% max, F = 1kHz, RL = 8Ω
Pout = 900mWRMS, G = 6dB, 20Hz < F < 20kHz
RL = 8Ω + 15µH, BW < 30kHz
Pout = 1WRMS, G = 6dB, F = 1kHz,
RL = 8Ω + 15µH, BW < 30kHz
Pout = 2WRMS, RL = 4Ω +≥ 15µH
Pout =1.2WRMS, RL = 8Ω+≥ 15µH
F = 217Hz, RL = 8Ω, G=6dB,
Vripple = 200mVpp
2.3 3.3
10 1000
3 25
2.3
3
1.4
1.75
1
0.4
78
88
63
CMRR
Common mode
rejection ratio
Gain Gain value
F = 217Hz, RL = 8Ω, G = 6dB,
ΔVicm = 200mVpp
Rin in kΩ
57
-2---7---3----k----Ω--
Rin
3----0---0----k---Ω---
Rin
-3---2---7----k---Ω---
Rin
RSTBY
Internal resistance
from Standby to GND
273 300 327
FPWM
Pulse width modulator
base frequency
180 250 320
SNR
tWU
tSTBY
Signal to noise ratio
Wake-up time
Standby time
A-weighting, Pout = 1.2W, RL = 8Ω
85
5 10
5 10
Unit
mA
nA
mV
W
%
%
dB
dB
V/V
kΩ
kHz
dB
ms
ms
5/41
5 Page 
TS4962M
Electrical characteristics
Table 7.
Symbol
VCC = +3V, GND = 0V, VIC = 2.5V, Tamb = 25°C (unless otherwise specified)(1)
Parameter
Conditions
Min. Typ. Max.
ICC
ISTBY
VOO
Supply current
Standby current (2)
Output offset voltage
Pout Output power
THD + N
Total harmonic
distortion + noise
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Efficiency Efficiency
PSRR
Power supply
rejection ratio with
inputs grounded (3)
No input signal, no load
No input signal, VSTBY = GND
No input signal, RL = 8Ω
G=6dB
THD = 1% max, F = 1kHz, RL = 4Ω
THD = 10% max, F = 1kHz, RL = 4Ω
THD = 1% max, F = 1kHz, RL = 8Ω
THD = 10% max, F = 1kHz, RL = 8Ω
Pout = 350mWRMS, G = 6dB, 20Hz < F < 20kHz
RL = 8Ω + 15µH, BW < 30kHz
Pout = 350mWRMS, G = 6dB, F = 1kHz,
RL = 8Ω + 15µH, BW < 30kHz
Pout = 0.7WRMS, RL = 4Ω +≥ 15µH
Pout = 0.45WRMS, RL = 8Ω+≥ 15µH
F = 217Hz, RL = 8Ω, G=6dB,
Vripple = 200mVpp
CMRR
Common mode
rejection ratio
Gain Gain value
F = 217Hz, RL = 8Ω, G = 6dB,
ΔVicm = 200mVpp
Rin in kΩ
-2---7---3----k---Ω---
Rin
RSTBY
Internal resistance
from Standby to GND
273
FPWM
Pulse width modulator
base frequency
180
SNR
tWU
tSTBY
Signal to noise ratio
Wake-up time
Standby time
A-weighting, Pout = 0.4W, RL = 8Ω
1.9
10
3
0.75
1
0.5
0.6
1
0.21
78
88
60
54
3----0---0----k---Ω---
Rin
300
250
82
5
5
2.7
1000
25
-3---2---7----k---Ω---
Rin
327
320
10
10
Unit
mA
nA
mV
W
%
%
dB
dB
V/V
kΩ
kHz
dB
ms
ms
11/41
11 Page | ||
| Páginas | Total 41 Páginas | |
| PDF Descargar | [ Datasheet TS4962M.PDF ] | |
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