STMicroelectronics TS4990 Schematic [ru]

1W AUDIO POWER AMPLIFIER WITH ACTIVE LOW

■OPERATING FROM V

■1W OUTPUT POWER @ Vcc=5V, THD=1%,

f=1kHz, with 8

Ω Load

■ULTRA LOW CONSUMPTION IN STANDBY

MODE (10nA)

■62dB PSRR @ 217Hz @ Grounded mode

■Zero PO P & CLIC K

■ULTRA LOW DISTORTION (0.1%)

■UNITY GAIN STABLE

■AVAILABLE IN 9 BUMPS Flip Chip Package

= 2.2V to 5.5V

CC

STANDBY MODE

PIN CONNECTIONS (top view)

TS4990JT - FLIP CHIP

TS4990

ADVANCE DATA

DESCRIPTION

The TS4990 has been designed for demanding
audio applications such as m obile phones and t o
minimize the number of external components.

This Audio Power Amplifier is capable of deliver­ing 1W of continuous RMS Ouput Powe r into an

Ω load @ 5V.

8
An externally controlle d standby m ode control re-

duces the supply current to less than 10nA. It also
includes an internal thermal shutdown protection.

The unity-gain stable amplifier can be configured
by external gain setting resistors.

APPLICATIONS

■Mobile Phones (Cellular / Cordless)

■Laptop / Notebook Computers

■PDAs

■Portable Audio Devices

ORDER CODE

Part Number

Temperature

Range

TS4990IJT -40, +85°C

Package

J

•

6

6

Vin-

Vin-

7

7

8

8

1

1

BYPASS VOUT2

BYPASS VOUT2

Vout1

Vout1

GNDGND VCC

GNDGND VCC

9

9

2

2

TYPICAL APPLICATION SCHEMATIC

Rfeed

Audio In

Cin

Standby
Control

Cfeed

Rin

7

Vin-

5

Vin+

1

Bypass

3

Standby

+

Cb

Vcc

48

VCCGND

-

+

-

AV = -1

+

Bias

9

Vin+

Vin+

STBY

STBY

Vout 1

Vout 2

TS4990

5

5

4

4

3

3

+

Cs

6

Speaker
8 Ohms

2

J = Flip Chip Package - only available in Tape & Reel (JT)

February 2003

This is a preliminary information on a new product now in development. Details are subject to change without notice.

1/6

TS4990

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V

T

T

R

Supply voltage

CC

V

Input Voltage

i

Operating Free Air Temperature Range -40 to + 85 °C

oper

Storage Temperature -65 to +150 °C

stg

T

Maximum Junction Temperature 150 °C

j

thja

Thermal Resistance Junction to Ambient

Flip Chip

Pd Power Dissipation Internally Limited
ESD Human Body Model 2 kV
ESD Machine Model 200 V

Latch-up Immunity Class A (200mA)
Lead Te mpera ture (solde ring, 10sec ) 250 °C

1. All voltages values are measured with respect to the ground pin.

2. The magnitude of input signal must never exceed V

3. Device is protected in case of over temperature by a thermal shutdown active @ 150°C.

OPERATING CONDITIONS

Symbol Parameter Value Unit

V

V

V

R

GND

T

R

Supply Voltage 2.2 to 5.5 V

CC

Common Mode Input Voltage Range

ICM

Standby Voltage Input :

STB

Device ON
Device OFF

R

Load Resistor 4 - 32

L

OUT

Resistor Output to GND > 1 M
Thermal Shutdown Temperature 150 min. °C

SD
thja

Thermal Resistance Junction to Ambient

1)

2)

3)

+ 0.3V / GND - 0.3V

CC

1.2 ≤ V

GND ≤ V

1)

6V

GND to V

CC

TBD

1.2V to V

STB

STB

CC

≤ V

≤ 0.4

CC

TBD °C/W

V

°C/W

V

V

Ω

Ω

1. This thermal resistance can be reduced with a suitable PCB layout .

2/6

TS4990

ELECTRICAL CHARACTERISTICS

V

= +5V, GND = 0V , T

CC

Symbol Parameter Min. Typ. Max. Unit

= 25°C (unless otherwise specified)

amb

I

CC

I

STANDBY

Voo

Po

THD + N

PSRR

T

WU

1. Standby mode is actived wh en Vstdby is tied to Gnd

2. Dynamic mea surements - 20*log(rms(Vout )/ rms(Vri ppl e)). Vripple is the suri mposed s i nus signal to Vc c.

= +3.3V, GND = 0V, T

V

CC

Supply Current

No input signal, no load 4 6

Standby Current

No input signal, Vstdby = GND, RL = 8

1)

Ω

10 1000 nA

Output Offset Voltage

No input signal, RL = 8

Ω

Output Power

THD = 1% Max, f = 1kHz, RL = 8

Ω

Total Harmonic Distortion + Noise

Po = 250mW rms, Gv = 2, 20Hz < f < 20kHz, RL = 8

Power Supply Rejection Ratio
RL = 8

Gv = 2, Vripple = 200mVpp, Input Grounded

Ω,

2)

F = 217Hz
F = 1kHz

0.8 1 W

Ω

55
55

520

0.15 %

62
66

Wake-Up Time 100 TBD ms

= 25°C (unless otherwise specified)

amb

Symbol Parameter Min. Typ. Max. Unit

I

CC

I

STANDBY

Supply Current

No input signal, no load 4 6

Standby Current

No input signal, Vstdby = GND, RL = 8

1)

Ω

10 1000 nA

mA

mV

dB

mA

Voo

Po

THD + N

PSRR

T

WU

1. Standby mode i s actived when Vstdby is tied to Vcc

2. Dynamic mea surements - 20*log(rms(Vout )/ rms(Vri ppl e)). Vripple is the suri mposed s i nus signal to Vc c.

Output Offset Voltage

No input signal, RL = 8

Output Power

THD = 1% Max, f = 1kHz, RL = 8

Ω

Ω

380 450 mW

Total Harmonic Distortion + Noise

Po = 250mW rms, Gv = 2, 20Hz < f < 20kHz, RL = 8

Power Supply Rejection Ratio
RL = 8

Gv = 2, Vripple = 200mVpp, Input Grounded

Ω,

2)

F = 217Hz
F = 1kHz

Ω

55
55

Wake-Up Time 130 TBD ms

520

mV

0.15 %

62

dB

66

3/6