TS4990
1W
AUDIO POWER AMPLIFIER WITH ACTIVE LOW
STANDBY MODE
ADVANCE DATA
s
OPERATING FROM
V
CC
= 2.2V to 5.5V
s
1W
OUTPUT POWER @ Vcc=5V, THD=1%,
f=1kHz, with
8
Ω
Load
PIN CONNECTIONS
(top view)
s
ULTRA LOW CONSUMPTION IN STANDBY
MODE
(10nA)
TS4990JT - FLIP CHIP
s
62dB
PSRR @ 217Hz @ Grounded mode
s
Zero
POP & CLICK
s
ULTRA LOW DISTORTION
(0.1%)
s
UNITY GAIN STABLE
s
AVAILABLE IN 9 BUMPS
Flip Chip Package
DESCRIPTION
The TS4990 has been designed for demanding
audio applications such as mobile phones and to
minimize the number of external components.
This Audio Power Amplifier is capable of deliver-
ing 1W of continuous RMS Ouput Power into an
8
Ω
load @ 5V.
An externally controlled standby mode 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.
Rfeed
4
+
6
7
8
1
Vin-
Vout1
Vin+
5
4
3
GND
GND
9
VCC
BYPASS
VOUT2
STBY
2
TYPICAL APPLICATION SCHEMATIC
APPLICATIONS
Cfeed
Vcc
Cs
s
Mobile Phones (Cellular / Cordless)
s
Laptop / Notebook Computers
s
PDAs
s
Portable Audio Devices
Audio In
Cin
Rin
7
Vin-
-
Vout 1
VCC
6
Speaker
8 Ohms
5
Vin+
+
-
AV = -1
Vout 2
2
1
Bypass
+
ORDER CODE
Part Number
TS4990IJT
Temperature
Range
-40, +85°C
Package
J
•
Standby
Control
Cb
3
Standby
Bias
GND
+
TS4990
9
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.
8
1/6
TS4990
ABSOLUTE MAXIMUM RATINGS
Symbol
V
CC
V
i
T
oper
T
stg
T
j
R
thja
Supply voltage
1)
Input Voltage
2)
Operating Free Air Temperature Range
Storage Temperature
Maximum Junction Temperature
Thermal Resistance Junction to Ambient
3)
Flip Chip
Power Dissipation
Human Body Model
Machine Model
Latch-up Immunity
Lead Temperature (soldering, 10sec)
Parameter
Value
6
G
ND
to V
CC
-40 to + 85
-65 to +150
150
TBD
Internally Limited
2
200
Class A (200mA)
250
Unit
V
V
°C
°C
°C
°C/W
Pd
ESD
ESD
kV
V
°C
1. All voltages values are measured with respect to the ground pin.
2. The magnitude of input signal must never exceed V
CC
+ 0.3V / G
ND
- 0.3V
3. Device is protected in case of over temperature by a thermal shutdown active @ 150°C.
OPERATING CONDITIONS
Symbol
V
CC
V
ICM
V
STB
R
L
R
OUT
GND
Parameter
Supply Voltage
Common Mode Input Voltage Range
Standby Voltage Input :
Device ON
Device OFF
Load Resistor
Resistor Output to GND
Thermal Shutdown Temperature
Thermal Resistance Junction to Ambient
1)
Value
2.2 to 5.5
1.2V to V
CC
1.2
≤
V
STB
≤
V
CC
GND
≤
V
STB
≤
0.4
4 - 32
>1
150 min.
TBD
Unit
V
V
V
Ω
MΩ
°C
°C/W
T
SD
R
thja
1. This thermal resistance can be reduced with a suitable PCB layout .
2/6
TS4990
ELECTRICAL CHARACTERISTICS
V
CC
=
+5V,
GND =
0V,
T
amb
= 25°C (unless otherwise specified)
Symbol
I
CC
I
STANDBY
Voo
Po
THD + N
Parameter
Supply Current
No input signal, no load
Standby Current
1)
No input signal, Vstdby = G
ND
, RL = 8Ω
Output Offset Voltage
No input signal, RL = 8Ω
Output Power
THD = 1% Max, f = 1kHz, RL = 8Ω
Total Harmonic Distortion + Noise
Po = 250mW rms, Gv = 2, 20Hz < f < 20kHz, RL = 8Ω
Power Supply Rejection Ratio
2)
RL = 8Ω, Gv = 2, Vripple = 200mVpp, Input Grounded
F = 217Hz
F = 1kHz
Wake-Up Time
0.8
Min.
Typ.
4
10
Max.
6
1000
Unit
mA
nA
mV
W
%
5
1
0.15
20
PSRR
55
55
62
66
100
TBD
dB
T
WU
ms
1. Standby mode is actived when Vstdby is tied to Gnd
2. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the surimposed sinus signal to Vcc.
V
CC
=
+3.3V,
GND =
0V,
T
amb
= 25°C (unless otherwise specified)
Symbol
I
CC
I
STANDBY
Voo
Po
THD + N
Parameter
Supply Current
No input signal, no load
Standby Current
1)
No input signal, Vstdby = G
ND
, RL = 8Ω
Output Offset Voltage
No input signal, RL = 8Ω
Output Power
THD = 1% Max, f = 1kHz, RL = 8Ω
Total Harmonic Distortion + Noise
Po = 250mW rms, Gv = 2, 20Hz < f < 20kHz, RL = 8Ω
Power Supply Rejection Ratio
2)
RL = 8Ω, Gv = 2, Vripple = 200mVpp, Input Grounded
F = 217Hz
F = 1kHz
Wake-Up Time
380
Min.
Typ.
4
10
Max.
6
1000
Unit
mA
nA
mV
mW
%
5
450
0.15
20
PSRR
55
55
62
66
130
TBD
dB
T
WU
ms
1. Standby mode is actived when Vstdby is tied to Vcc
2. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the surimposed sinus signal to Vcc.
3/6
TS4990
ELECTRICAL CHARACTERISTICS
V
CC
=
2.6V,
GND =
0V,
T
amb
= 25°C (unless otherwise specified)
Symbol
I
CC
I
STANDBY
Voo
Po
THD + N
Parameter
Supply Current
No input signal, no load
Standby Current
1)
No input signal, Vstdby = G
ND
, RL = 8Ω
Output Offset Voltage
No input signal, RL = 8Ω
Output Power
THD = 1% Max, f = 1kHz, RL = 8Ω
Total Harmonic Distortion + Noise
Po = 200mW rms, Gv = 2, 20Hz < f < 20kHz, RL = 8Ω
Power Supply Rejection Ratio
2)
RL = 8Ω, Gv = 2, Vripple = 200mVpp, Input Grounded
F = 217Hz
F = 1kHz
Wake-Up Time
210
Min.
Typ.
4
10
Max.
6
1000
Unit
mA
nA
mV
mW
%
5
260
0.15
20
PSRR
55
55
62
66
130
TBD
dB
T
WU
ms
1. Standby mode is actived when Vstdby is tied to Vcc
2. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the surimposed sinus signal to Vcc.
Components
Rin
Cin
Rfeed
Cs
Cb
Cfeed
Gv
Functional Description
Inverting input resistor which sets the closed loop gain in conjunction with Rfeed. This resistor also
form a high pass filter with Cin (fc = 1 / (2 x Pi x Rin x Cin))
Input coupling capacitor which blocks the DC voltage at the amplifier input terminal
Feed back resistor which sets the closed loop gain in conjunction with Rin
Supply Bypass capacitor which provides power supply filtering
Bypass pin capacitor which provides half supply filtering
Low pass filter capacitor allowing to cut the high frequency (low pass filter cut-off frequency
1 / (2 x Pi x Rfeed x Cfeed))
Closed loop gain in BTL configuration = 2 x (Rfeed / Rin)
REMARKS
1.
All measurements, except PSRR measurements, are made with a supply bypass capacitor Cs = 1µF.
2.
The standby response time is about 1µs.
4/6
TS4990
TS4990IJT
PIN OUT
(top view)
MARKING
(top view)
250µm
6
7
8
1
Vin-
Vout1
Vin+
5
500µm
GND
GND
9
VCC
4
3
YWW 4990
BYPASS
VOUT2
STBY
2
s
Balls are underneath
s
s
s
s
ST Logo
Part number 4990
Three digits Datecode : YWW
The dot is for marking pin 1
PACKAGE MECHANICAL DATA
FLIP CHIP - 9 BUMPS
0.5mm
0.5mm
s
Die size : (1.6mm ±10%) x (1.6mm ±10%)
s
Die height (including bumps) : 600µm
±30µm
s
Bumps diameter : 315µm ±15µm
s
Pitch: 500µm ±10µm
0.5mm
1.6mm
0.5mm
1.6mm
600µm
5/6
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