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TS419-4 Datasheet

  • TS419-4

  • 360mW MONO AMPLIFIER WITH STANDBY MODE

  • 991.82KB

  • 32頁(yè)

  • STMICROELECTRONICS   STMICROELECTRONICS

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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 16鈩? 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 32鈩?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 16鈩?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
TS419IQT, TS419-xIQT: DFN8
PIN CONNECTIONS
(top view)
TS419IDT: SO8
TS419IST, TS419-xIST: MiniSO8
Standby
Bypass
V
IN
+
V
IN-
1
2
3
4
8
7
6
5
V
OUT
2
GND
V
CC
V
OUT1
GND
V
OUT 2
STANDBY
BYPASS
1
2
3
4
8
7
6
5
Vcc
V
OUT 1
V
IN-
V
IN+
TS421IDT: SO8
TS421IST, TS421-xIST: MiniSO8
Package
Gain
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S
Q
external
external
external
x2/6dB
x4/12dB
x8/18dB
external
x2/6dB
x4/12dB
x8/18dB
TS419I
TS421I
K19A
K19B
K19C
K19D
K21A
K21B
K21C
K21D
Marking
TS421IQT, TS421-xIQT: DFN8
TS419
TS421
TS419
TS419-2
TS419-4
-40, +85擄C
TS419-8
TS421
TS421-2
TS421-4
TS421-8
GND
V
OUT 2
STANDBY
BYPASS
1
2
3
4
8
7
6
5
Vcc
V
OUT 1
V
IN-
V
IN+
MiniSO & DFN only available in Tape & Reel with T suffix.
SO is available in Tube (D) and in Tape & Reel (DT)
June 2003
1/32

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