IC AMP AUDIO PWR .367W AB 8MSOP

TS421IST

Manufacturer Part NumberTS421IST
DescriptionIC AMP AUDIO PWR .367W AB 8MSOP
ManufacturerSTMicroelectronics
TypeClass AB
TS421IST datasheet
 


Specifications of TS421IST

Output Type1-Channel (Mono)Max Output Power X Channels @ Load367mW x 1 @ 16 Ohm
Voltage - Supply2 V ~ 5.5 VFeaturesDifferential Inputs, Short-Circuit Protection, Standby
Mounting TypeSurface MountPackage / Case8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
Lead Free Status / RoHS StatusLead free / RoHS CompliantOther names497-4449-2
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360mW MONO AMPLIFIER WITH STANDBY MODE
OPERATING FROM Vcc=2V to 5.5V
STANDBY MODE ACTIVE HIGH (TS419) or
LOW (TS421)
OUTPUT POWER into 16 : 367mW @ 5V
with 10% THD+N max or 295mW @5V and
110mW @3.3V with 1% THD+N max.
LOW CURRENT CONSUMPTION: 2.5mA max
High Signal-to-Noise ratio: 95dB(A) at 5V
PSRR: 56dB typ. at 1kHz, 46dB at 217Hz
SHORT CIRCUIT LIMITATION
ON/OFF click reduction circuitry
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 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 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
16/32 ohms earpiece or receiver speaker driver
Mobile and cordless phones (analog / digital)
PDAs & computers
Portable appliances
ORDER CODE
Temp.
Package
Part
Range:
Number
D
S
Q
I
TS419
TS421
TS419
TS419-2
tba tba
TS419-4
tba tba x4/12dB
-40, +85°C
TS419-8
tba tba x8/18dB
TS421
TS421-2
tba tba
TS421-4
tba tba x4/12dB
TS421-8
tba tba x8/18dB
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)
Gain
Marking
external
TS419I
external
TS421I
external
K19A
x2/6dB
K19B
K19C
K19D
external
K21A
x2/6dB
K21B
K21C
K21D
TS419
TS421
TS419IDT: SO8
TS419IST, TS419-xIST: MiniSO8
TS419IQT, TS419-xIQT: DFN8
1
1
8
8
GND
GND
Vcc
Vcc
V
V
2
2
7
7
OUT 2
OUT 2
V
V
OUT 1
OUT 1
3
3
STANDBY
STANDBY
6
6
V
V
IN-
IN-
BYPASS
BYPASS
4
4
V
V
5
5
IN+
IN+
TS421IDT: SO8
TS421IST, TS421-xIST: MiniSO8
TS421IQT, TS421-xIQT: DFN8
1
1
8
8
GND
GND
Vcc
Vcc
V
V
2
2
7
7
OUT 2
OUT 2
V
V
OUT 1
OUT 1
3
3
STANDBY
STANDBY
6
6
V
V
IN-
IN-
BYPASS
BYPASS
V
V
4
4
5
5
IN+
IN+
1/32

TS421IST Summary of contents

  • Page 1

    ... TS419IST, TS419-xIST: MiniSO8 TS419IQT, TS419-xIQT: DFN8 GND GND Vcc Vcc OUT 2 OUT OUT 1 OUT STANDBY STANDBY IN- IN- BYPASS BYPASS IN+ IN+ TS421IDT: SO8 TS421IST, TS421-xIST: MiniSO8 TS421IQT, TS421-xIQT: DFN8 GND GND Vcc Vcc OUT 2 OUT OUT 1 OUT STANDBY STANDBY IN- IN- BYPASS BYPASS IN+ IN+ 1/32 ...

  • Page 2

    TS419-TS421 ABSOLUTE MAXIMUM RATINGS Symbol 1) V Supply voltage CC V Input Voltage i T Storage Temperature stg T Maximum Junction Temperature j Thermal Resistance Junction to Ambient R thja SO8 MiniSO8 DFN8 2) Power Dissipation SO8 Pd MiniSO8 DFN8 ...

  • Page 3

    FIXED GAIN VERSION SPECIFIC ELECTRICAL CHARACTERISTICS V from +5V to +2V, GND = 0V Symbol R Input Resistance IN Gain value for Gain TS419/TS421-2 G Gain value for Gain TS419/TS421-4 Gain value for Gain TS419/TS421-8 APPLICATION COMPONENTS INFORMATION ...

  • Page 4

    TS419-TS421 ELECTRICAL CHARACTERISTICS V = +5V, GND = 0V 25°C (unless otherwise specified) CC amb Symbol Supply Current input signal, no load Standby Current No input signal STANDBY No input signal, V Output ...

  • Page 5

    ELECTRICAL CHARACTERISTICS V = +3.3V, GND = 0V 25°C (unless otherwise specified) CC amb Symbol Supply Current input signal, no load Standby Current No input signal STANDBY No input signal, V Output Offset ...

  • Page 6

    TS419-TS421 ELECTRICAL CHARACTERISTICS V = +2.5V, GND = 0V 25°C (unless otherwise specified) CC amb Symbol Supply Current input signal, no load Standby Current No input signal STANDBY No input signal, V Output ...

  • Page 7

    ELECTRICAL CHARACTERISTICS V = +2V, GND = 0V 25°C (unless otherwise specified) CC amb Symbol Supply Current input signal, no load Standby Current No input signal STANDBY No input signal, V Output Offset ...

  • Page 8

    TS419-TS421 Index of Graphs Common Curves Open Loop Gain and Phase vs Frequency Current Consumption vs Power Supply Voltage Current Consumption vs Standby Voltage Output Power vs Power Supply Voltage Output Power vs Load Resistor Power Dissipation vs Output Power ...

  • Page 9

    Fig. 1: Open Loop Gain and Phase vs Frequency 80 Gain 60 40 Phase 20 0 -20 -40 0 100 Frequency (kHz) Fig. 3: Open Loop Gain and Phase vs Frequency 80 Gain 60 40 Phase 20 0 ...

  • Page 10

    TS419-TS421 Fig. 7: Open Loop Gain and Phase vs Frequency 80 Gain 60 40 Phase 20 0 -20 -40 0 100 Frequency (kHz) Fig. 9: Open Loop Gain and Phase vs Frequency 80 Gain 60 40 Phase 20 ...

  • Page 11

    Fig. 13: Current Consumption vs Power Supply Voltage 2.0 No load Ta=85 C 1.5 Ta=25 C 1.0 0.5 0 Power Supply Voltage (V) Fig. 15: Current Consumption vs Standby Voltage 2.0 1.5 Ta=25 C 1.0 Ta=-40 C ...

  • Page 12

    TS419-TS421 Fig. 19: Current Consumption vs Standby Voltage 2.0 Ta=85 C 1.5 Ta=25 C 1.0 Ta=-40 C 0.5 0 Standby Voltage (V) Fig. 21: Output Power vs Power Supply Voltage 500 450 F = 1kHz ...

  • Page 13

    Fig. 25: Output Power vs Load Resistor 200 THD+N=10% 150 THD+N=1% 100 50 THD+N=0. Load Resistance ( ) Fig. 27: Output Power vs Load Resistor 50 45 THD+N=10% 40 THD+N= ...

  • Page 14

    TS419-TS421 Fig. 31: Power Dissipation vs Output Power 100 Vcc=2V F=1kHz THD+N< RL= Output Power (mW) Fig. 33: Output Voltage Swing For One Amp. vs Power Supply Voltage 5.0 Tamb=25 ...

  • Page 15

    Fig. 35: THD + N vs Output Power 20Hz < 22kHz Vcc=2V Tamb = 25 C 0.1 Vcc=2.5V 0.01 Vcc=3.3V 1E Output Power ...

  • Page 16

    TS419-TS421 Fig. 41: THD + N vs Output Power 20kHz < 125kHz Tamb = 25 C Vcc=2V 1 Vcc=2.5V Vcc=3.3V 0 Output Power (mW) ...

  • Page 17

    Fig. 47: Signal to Noise Ratio vs Power Supply Voltage with Unweighted Filter (20Hz to 20kHz) 100 THD+N < 0.5% RL=32 Tamb = RL= 2.0 ...

  • Page 18

    TS419-TS421 Fig. 53: PSRR vs Bypass Capacitor 0 Vripple = 200mVpp - Input = Grounded - Cin = >= 16 -30 Tamb = 25 C -40 Vcc = 2V -50 -60 Vcc ...

  • Page 19

    Fig. 56: THD + N vs Output Power 20Hz < 22kHz Tamb = 25 C Vcc=2V 0.1 Vcc=2.5V 0.01 Vcc=3. Output Power (mW) ...

  • Page 20

    TS419-TS421 Fig. 62: THD + N vs Output Power 20kHz < 125kHz Tamb = 25 C Vcc=2V 1 Vcc=2.5V Vcc=3. Output Power (mW) Fig. ...

  • Page 21

    Fig. 68: Signal to Noise Ratio vs Power Supply Voltage with Unweighted Filter (20Hz to 20kHz RL=32 THD+N < 0.5% 85 Tamb = RL=16 70 2.0 2.5 3.0 ...

  • Page 22

    TS419-TS421 Fig. 74: PSRR vs Bypass Capacitor 0 Vripple = 200mVpp - Input = Grounded Cb = Cin = 1 F -20 RL >= 16 Tamb = 25 C -30 Vcc = 2V -40 -50 -60 Vcc ...

  • Page 23

    Fig. 77: THD + N vs Output Power 20Hz < 22kHz Tamb = 25 C Vcc=2V 0.1 Vcc=2.5V Vcc=3.3V 0. Output Power (mW) ...

  • Page 24

    TS419-TS421 Fig. 83: THD + N vs Output Power 20kHz < 125kHz, Tamb = 25 C Vcc=2V Vcc=2.5V 1 Vcc=3. Output Power (mW) ...

  • Page 25

    Fig. 89: Signal to Noise Ratio vs Power Supply Voltage with Unweighted Filter (20Hz to 20kHz RL=32 THD+N < 0.5% Tamb = RL= 2.0 ...

  • Page 26

    TS419-TS421 Fig. 95: PSRR vs Bypass Capacitor 0 Vripple = 200mVpp -10 Input = Grounded Cb = Cin = 1 F -20 RL >= 16 Tamb = 25 C -30 -40 -50 Vcc = 5V, 3.3V & ...

  • Page 27

    APPLICATION INFORMATION BTL Configuration Principle The TS419 & TS420 are monolithic power amplifiers with a BTL output type. BTL (Bridge Tied Load) means that each end of the load is connected to two single-ended output amplifiers. Thus, we have: Single ...

  • Page 28

    TS419-TS421 The efficiency is the ratio between the output power and the power supply P OUT P sup ply The maximum theoretical value is reached when Vpeak = Vcc Decoupling of the circuit Two ...

  • Page 29

    Fig Differential Input Amplifier Configuration Input capacitance C can be calculated by the following formula using the -3dB lower frequency required the lower frequency required Note : ...

  • Page 30

    TS419-TS421 PACKAGE MECHANICAL DATA DIM. MIN. A 1.35 A1 0.10 A2 1.10 B 0.33 C 0.19 D 4. 5.80 h 0.25 L 0.40 k ddd 30/32 SO-8 MECHANICAL DATA mm. TYP MAX. 1.75 0.25 1.65 0.51 ...

  • Page 31

    PACKAGE MECHANICAL DATA TS419-TS421 31/32 ...

  • Page 32

    ... No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied ...