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PDF TS421 Data sheet ( Hoja de datos )
| Número de pieza | TS421 | |
| Descripción | 360mW MONO AMPLIFIER WITH STANDBY MODE | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TS421 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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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 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
1 page  
TS419-TS421
ELECTRICAL CHARACTERISTICS
VCC = +3.3V, GND = 0V, Tamb = 25°C (unless otherwise specified) 1)
Symbol
Parameter
ICC
Supply Current
No input signal, no load
ISTANDBY
Standby Current
No input signal, VSTANDBY=GND for TS421
No input signal, VSTANDBY=Vcc for TS419
Voo
Output Offset Voltage
No input signal, RL = 16 or 32Ω, Rfeed=20kΩ
Output Power
THD+N = 0.1% Max, F = 1kHz, RL = 32Ω
THD+N = 1% Max, F = 1kHz, RL = 32Ω
PO THD+N = 10% Max, F = 1kHz, RL = 32Ω
THD+N = 0.1% Max, F = 1kHz, RL = 16Ω
THD+N = 1% Max, F = 1kHz, RL = 16Ω
THD+N = 10% Max, F = 1kHz, RL = 16Ω
THD + N
Total Harmonic Distortion + Noise (Av=2)
RL = 32Ω, Pout = 50mW, 20Hz ≤ F ≤ 20kHz
RL = 16Ω, Pout = 70mW, 20Hz ≤ F ≤ 20kHz
PSRR
Power Supply Rejection Ratio
inputs grounded, F = 1kHz, Vripple = 200mVpp, Cb=1µF
SNR
Signal-to-Noise Ratio (Weighted A, Av=2)
(RL = 32Ω, THD +N < 0.5%, 20Hz ≤ F ≤ 20kHz)
ΦM
Phase Margin at Unity Gain
RL = 16Ω, CL = 400pF
Gain Margin
GM RL = 16Ω, CL = 400pF
GBP
Gain Bandwidth Product
RL = 16Ω
Slew Rate
SR RL = 16Ω
1. All electrical values are guaranted with correlation measurements at 2V and 5V
Min. Typ. Max. Unit
1.8 2.5
mA
10 1000
nA
5 25 mV
75
65 81
102
104
91 113
143
0.15
0.2
50 56
82 94
58
18
1.1
0.4
mW
%
dB
dB
Degrees
dB
MHz
V/µS
5/32
5 Page 
TS419-TS421
Fig. 13: Current Consumption vs Power Supply
Voltage
Fig. 14: Current Consumption vs Standby
Voltage
2.0
No load
Ta=85°C
1.5
1.0
Ta=25°C
Ta=-40°C
0.5
0.0
0
1234
Power Supply Voltage (V)
5
2.0
1.5
1.0
0.5
0.0
0
Ta=85°C
Ta=25°C
Ta=-40°C
TS419
Vcc = 5V
No load
1234
Standby Voltage (V)
5
Fig. 15: Current Consumption vs Standby
Voltage
2.0
1.5
1.0
0.5
0.0
0
Ta=85°C
Ta=25°C
Ta=-40°C
12
Standby Voltage (V)
TS419
Vcc = 3.3V
No load
3
Fig. 16: Current Consumption vs Standby
Voltage
2.0
Ta=85°C
1.5
1.0
Ta=25°C
0.5
0.0
0
Ta=-40°C
1
Standby Voltage (V)
TS419
Vcc = 2V
No load
2
Fig. 17: Current Consumption vs Standby
Voltage
Fig. 18: Current Consumption vs Standby
Voltage
2.5
Ta=85°C
2.0
Ta=25°C
1.5
1.0 Ta=-40°C
0.5
0.0
0
TS421
Vcc = 5V
No load
1234
Standby Voltage (V)
5
2.0
1.5
Ta=85°C
1.0
Ta=25°C
Ta=-40°C
0.5
0.0
0
12
Standby Voltage (V)
TS421
Vcc = 3.3V
No load
3
11/32
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet TS421.PDF ] | |
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