|
STMicroelectronics |
TS419
TS421
360mW MONO AMPLIFIER WITH STANDBY MODE
s OPERATING FROM Vcc=2V to 5.5V
s STANDBY MODE ACTIVE HIGH (TS419) or
LOW (TS421)
s OUTPUT POWER into 16Ω: 367mW @ 5V
with 10% THD+N max or 295mW @5V and
110mW @3.3V with 1% THD+N max.
s LOW CURRENT CONSUMPTION: 2.5mA max
s High Signal-to-Noise ratio: 95dB(A) at 5V
s PSRR: 56dB typ. at 1kHz, 46dB at 217Hz
s SHORT CIRCUIT LIMITATION
s ON/OFF click reduction circuitry
s Available in SO8, MiniSO8 & DFN 3x3
DESCRIPTION
The TS419/TS421 is a monaural audio power am-
plifier driving in BTL mode a 16 or 32Ω earpiece or
receiver speaker. The main advantage of this con-
figuration is to get rid of bulky ouput capacitors.
Capable of descending to low voltages, it delivers
up to 220mW per channel (into 16Ω loads) of con-
tinuous average power with 0.2% THD+N in the
audio bandwidth from a 5V power supply.
An externally controlled standby mode reduces
the supply current to 10nA (typ.). The TS419/
TS421 can be configured by external gain-setting
resistors or used in a fixed gain version.
APPLICATIONS
s 16/32 ohms earpiece or receiver speaker driver
s Mobile and cordless phones (analog / digital)
s PDAs & computers
s Portable appliances
ORDER CODE
Part
Number
Temp.
Range:
I
Package
DS Q
Gain Marking
TS419
• external TS419I
TS421
• external TS421I
TS419
• • external K19A
TS419-2
tba tba x2/6dB K19B
TS419-4
-40, +85°C
TS419-8
tba tba x4/12dB K19C
tba tba x8/18dB K19D
TS421
• • external K21A
TS421-2
tba tba x2/6dB K21B
TS421-4
tba tba x4/12dB K21C
TS421-8
tba tba x8/18dB K21D
MiniSO & DFN only available in Tape & Reel with T suffix.
SO is available in Tube (D) and in Tape & Reel (DT)
June 2003
PIN CONNECTIONS (top view)
TS419IDT: SO8
TS419IST, TS419-xIST: MiniSO8
Standby
Bypass
VIN+
VIN-
1
2
3
4
8 VOUT2
7 GND
6 VCC
5 VOUT1
TS419IQT, TS419-xIQT: DFN8
GND 1
VOUT 2 2
STANDBY 3
BYPASS 4
8 Vcc
7 VOUT 1
6 VIN-
5 VIN+
TS421IDT: SO8
TS421IST, TS421-xIST: MiniSO8
TS421IQT, TS421-xIQT: DFN8
GND 1
VOUT 2 2
STANDBY 3
BYPASS 4
8 Vcc
7 VOUT 1
6 VIN-
5 VIN+
1/32
TS419-TS421
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
VCC Supply voltage 1)
6V
Vi Input Voltage
-0.3V to VCC +0.3V
V
Tstg Storage Temperature
-65 to +150
°C
Tj Maximum Junction Temperature
150 °C
Rthja
Thermal Resistance Junction to Ambient
SO8
MiniSO8
DFN8
175 °C/W
215
70
Power Dissipation 2)
Pd SO8
MiniSO8
DFN8
0.71
0.58
1.79
W
ESD Human Body Model (pin to pin): TS4193), TS421
1.5 kV
ESD Machine Model - 220pF - 240pF (pin to pin)
100 V
Latch-up Latch-up Immunity (All pins)
200 mA
Lead Temperature (soldering, 10sec)
250 °C
Output Short-Circuit to Vcc or GND
continous 4)
1. All voltage values are measured with respect to the ground pin.
2. Pd has been calculated with Tamb = 25°C, Tjunction = 150°C.
3. TS419 stands 1.5KV on all pins except standby pin which stands 1KV.
4. Attention must be paid to continous power dissipation (VDD x 300mA). Exposure of the IC to a short circuit for an extended time period is
dramatically reducing product life expectancy.
OPERATING CONDITIONS
Symbol
Parameter
Value
VCC
RL
Toper
CL
VICM
Supply Voltage
Load Resistor
Operating Free Air Temperature Range
Load Capacitor
RL = 16 to 100Ω
RL > 100Ω
Common Mode Input Voltage Range
2 to 5.5
≥ 16
-40 to + 85
400
100
GND to VCC-1V
VSTB
Standby Voltage Input
TS421 ACTIVE / TS419 in STANDBY
TS421 in STANDBY / TS419 ACTIVE
1.5 ≤ VSTB ≤ VCC
GND ≤ VSTB ≤ 0.4 1)
RTHJA
Thermal Resistance Junction to Ambient
SO8
MiniSO8
DFN8 2)
150
190
41
Twu Wake-up time from standby to active mode (Cb = 1µF) 3)
≥ 0.12
1. The minimum current consumption (ISTANDBY) is guaranteed at VCC (TS419) or GND (TS421) for the whole temperature range.
2. When mounted on a 4-layer PCB
3. For more details on TWU, please refer to application note section on Wake-up time page 28.
Unit
V
Ω
°C
pF
V
V
°C/W
s
2/32
|