Datenblatt-pdf.com


TS421-8 Schematic ( PDF Datasheet ) - STMicroelectronics

Teilenummer TS421-8
Beschreibung 360mW MONO AMPLIFIER WITH STANDBY MODE
Hersteller STMicroelectronics
Logo STMicroelectronics Logo 




Gesamt 30 Seiten
TS421-8 Datasheet, Funktion
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: 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 32earpiece 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 16loads) 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






TS421-8 Datasheet, Funktion
TS419-TS421
ELECTRICAL CHARACTERISTICS
VCC = +2.5V, 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=20k
Output Power
THD+N = 0.1% Max, F = 1kHz, RL = 32
THD+N = 1% Max, F = 1kHz, RL = 32
PO THD+N = 10% Max, F = 1kHz, RL = 32
THD+N = 0.1% Max, F = 1kHz, RL = 16
THD+N = 1% Max, F = 1kHz, RL = 16
THD+N = 10% Max, F = 1kHz, RL = 16
THD + N
Total Harmonic Distortion + Noise (Av=2)
RL = 32Ω, Pout = 30mW, 20Hz F 20kHz
RL = 16Ω, Pout = 40mW, 20Hz F 20kHz
PSRR
Power Supply Rejection Ratio (Av=2)
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 = 16, CL = 400pF
Gain Margin
GM RL = 16, CL = 400pF
GBP
Gain Bandwidth Product
RL = 16
Slew Rate
SR RL = 16
1. All electrical values are guaranted with correlation measurements at 2V and 5V
Min. Typ. Max. Unit
1.7 2.5
mA
10 1000
nA
5 25 mV
37
32 41
52
50
44 55
70
0.15
0.2
50 56
80 91
58
18
1.1
0.4
mW
%
dB
dB
Degrees
dB
MHz
V/µS
6/32

6 Page









TS421-8 pdf, datenblatt
TS419-TS421
Fig. 19: 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
1
Standby Voltage (V)
TS421
Vcc = 2V
No load
2
Fig. 21: Output Power vs Power Supply
Voltage
500
450 RL = 16
F = 1kHz
400 BW < 125kHz
350 Tamb = 25°C
THD+N=1%
300 THD+N=10%
250
200
150
100 THD+N=0.1%
50
0
2.0 2.5 3.0 3.5 4.0 4.5 5.0
Vcc (V)
5.5
Fig. 23: Output Power vs Power Supply
Voltage
200
RL = 64
F = 1kHz
BW < 125kHz
150 Tamb = 25°C
THD+N=1%
THD+N=10%
100
50
THD+N=0.1%
0
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
Vcc (V)
Fig. 20: Output Power vs Power Supply
Voltage
550
500 RL = 8
F = 1kHz
450 BW < 125kHz
400 Tamb = 25°C
THD+N=1%
350
THD+N=10%
300
250
200
150
100 THD+N=0.1%
50
0
2.0 2.5 3.0 3.5 4.0 4.5 5.0
Vcc (V)
5.5
Fig. 22: Output Power vs Power Supply
Voltage
300 RL = 32
F = 1kHz
250 BW < 125kHz
Tamb = 25°C
THD+N=1%
200 THD+N=10%
150
100
THD+N=0.1%
50
0
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
Vcc (V)
Fig. 24: Output Power vs Load Resistor
500
450
400
350
300
250
200
150
100
50
0
8
THD+N=10%
THD+N=1%
Vcc = 5V
F = 1kHz
BW < 125kHz
Tamb = 25°C
THD+N=0.1%
16 24 32 40 48 56 64
Load Resistance ( )
12/32

12 Page





SeitenGesamt 30 Seiten
PDF Download[ TS421-8 Schematic.PDF ]

Link teilen




Besondere Datenblatt

TeilenummerBeschreibungHersteller
TS421-2360mW MONO AMPLIFIER WITH STANDBY MODESTMicroelectronics
STMicroelectronics
TS421-4360mW MONO AMPLIFIER WITH STANDBY MODESTMicroelectronics
STMicroelectronics
TS421-8360mW MONO AMPLIFIER WITH STANDBY MODESTMicroelectronics
STMicroelectronics

TeilenummerBeschreibungHersteller
CD40175BC

Hex D-Type Flip-Flop / Quad D-Type Flip-Flop.

Fairchild Semiconductor
Fairchild Semiconductor
KTD1146

EPITAXIAL PLANAR NPN TRANSISTOR.

KEC
KEC


www.Datenblatt-PDF.com       |      2020       |      Kontakt     |      Suche