IC AMP AUDIO PWR 1W MONO 8SOIC

TS4890IDT

Manufacturer Part NumberTS4890IDT
DescriptionIC AMP AUDIO PWR 1W MONO 8SOIC
ManufacturerSTMicroelectronics
TypeClass AB
TS4890IDT datasheet
 


Specifications of TS4890IDT

Output Type1-Channel (Mono)Max Output Power X Channels @ Load1W x 1 @ 8 Ohm
Voltage - Supply2.5 V ~ 5.5 VFeaturesDepop, Standby, Thermal Protection
Mounting TypeSurface MountPackage / Case8-SOIC (3.9mm Width)
Operational ClassClass-AAudio Amplifier Output Configuration1-Channel Mono
Output Power (typ)1x1@8OhmWAudio Amplifier FunctionSpeaker
Total Harmonic Distortion0.15@8Ohm@250mW%Single Supply Voltage (typ)3/5V
Dual Supply Voltage (typ)Not RequiredVSupply Current (max)8@5VmA
Power Supply RequirementSingleUnity Gain Bandwidth Product (typ)2MHz
Rail/rail I/o TypeRail to Rail OutputPower Supply Rejection Ratio77dB
Single Supply Voltage (min)2.2VSingle Supply Voltage (max)5.5V
Dual Supply Voltage (min)Not RequiredVDual Supply Voltage (max)Not RequiredV
Operating Temp Range-40C to 85COperating Temperature ClassificationIndustrial
MountingSurface MountPin Count8
Package TypeSOICFor Use With497-6363 - BOARD DEMO FOR TS489
Lead Free Status / RoHS StatusLead free / RoHS Compliant  
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RAIL TO RAIL OUTPUT 1W AUDIO POWER AMPLIFIER WITH
OPERATING FROM V
= 2.2V to 5.5V
CC
1W RAI L TO RAIL OUTPUT POWER @
Vcc=5V, THD=1%, f=1kHz, with 8 Load
ULTRA LOW CONSUMPTION IN STANDBY
MODE (10nA)
75dB PSRR @ 217Hz from 5 to 2.2V
POP & CLICK REDUCTION CIRCUITRY
ULTRA LOW DISTORTION (0.1%)
UNITY GAIN STABLE
AVAILABLE IN SO8, MiniSO8 & DFN8
DESCRIPTION
The TS4890 (MiniSO8 & SO8) is an Audio Power
Amplifier capable of delivering 1W of continuous
RMS. ouput power into 8 load @ 5V.
This Audio Amplifier is exhibiting 0.1% distortion
level (THD) from a 5V supply for a Pout = 250mW
RMS. An external standby mode control reduces
the supply current to less than 10nA. An internal
thermal shutdown protection is also provided.
The TS4890 have been designed for high quality
audio applications such as mobile phones and to
minimize the number of external components.
The unity-gain stable amplifier can be configured
by external gain setting resistors.
APPLICATIONS
Mobile Phones (Cellular / Cordless)
Laptop / Notebook Computers
PDAs
Portable Audio Devices
ORDER CODE
Package
Part
Temperature
Number
Range
S
D
TS4890
-40, +85°C
MiniSO & DFN only available in Tape & Reel: with T suffix.
SO is available in Tube (D) and of Tape & Reel (DT)
June 2003
STANDBY MODE ACTIVE LOW
PIN CONNECTIONS (Top View)
STANDBY
STANDBY
BYPASS
BYPASS
V
V
IN+
IN+
V
V
IN-
IN-
TYPICAL APPLICATION SCHEMATIC
Marking
Q
4890I
4890
4890
TS4890
TS4890ID, TS4890IDT - SO8
TS4890IST - MiniSO8
TS4890IQT - DFN8
8
8
1
1
V
V
OUT 2
OUT 2
7
7
2
2
GND
GND
6
6
3
3
Vcc
Vcc
5
5
V
V
4
4
OUT 1
OUT 1
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TS4890IDT Summary of contents

  • Page 1

    ... SO is available in Tube (D) and of Tape & Reel (DT) June 2003 STANDBY MODE ACTIVE LOW PIN CONNECTIONS (Top View) STANDBY STANDBY BYPASS BYPASS V V IN+ IN IN- IN- TYPICAL APPLICATION SCHEMATIC Marking Q 4890I 4890 4890 TS4890 TS4890ID, TS4890IDT - SO8 TS4890IST - MiniSO8 TS4890IQT - DFN8 OUT 2 OUT GND GND Vcc Vcc ...

  • Page 2

    TS4890 ABSOLUTE MAXIMUM RATINGS Symbol 1) V Supply voltage Input Voltage i T Operating Free Air Temperature Range oper T Storage Temperature stg T Maximum Junction Temperature j Thermal Resistance Junction to Ambient R thja SO8 MiniSO8 ...

  • Page 3

    ELECTRICAL CHARACTERISTICS V = +5V, GND = 0V 25°C (unless otherwise specified) CC amb Symbol Supply Current input signal, no load 1) Standby Current I STANDBY No input signal, Vstdby = G Output Offset Voltage ...

  • Page 4

    TS4890 V = 2.6V, GND = 0V 25°C (unless otherwise specified) CC amb Symbol Supply Current input signal, no load 1) Standby Current I STANDBY No input signal, Vstdby = G Output Offset Voltage Voo ...

  • Page 5

    Components Inverting input resistor which sets the closed loop gain in conjunction with Rfeed. This resistor also Rin forms a high pass filter with Cin ( Rin x Cin)) Cin Input coupling capacitor ...

  • Page 6

    TS4890 Fig Open Loop Frequency Response 60 Gain 40 Phase 20 0 -20 -40 0 100 Frequency (kHz) Fig Open Loop Frequency Response 80 Gain 60 40 Phase 20 0 -20 -40 0.3 1 ...

  • Page 7

    Fig Open Loop Frequency Response 80 Gain 60 40 Phase 20 0 -20 -40 0 100 Frequency (kHz) Fig Open Loop Frequency Response 100 80 Phase 60 Gain Vcc = 5V ...

  • Page 8

    TS4890 Fig Power Supply Rejection Ratio (PSRR) vs Power supply -30 Vripple = 200mVrms Rfeed = 22k -40 Input = floating Tamb = 25 C -50 Vcc = 5V to 2.2V - ...

  • Page 9

    Fig Pout @ THD + N = 10% vs Supply Voltage & 1kHz 1 < 125kHz 1.4 Tamb = 25 C ...

  • Page 10

    TS4890 Fig THD + N vs Output Power Vcc = Cin = < 125kHz Tamb = 20kHz 20Hz, 1kHz 0.1 1E-3 0.01 ...

  • Page 11

    Fig THD + N vs Output Power Vcc = 2. Cin = < 125kHz Tamb = 20kHz 20Hz, 1kHz 0.1 1E-3 0.01 ...

  • Page 12

    TS4890 Fig THD + N vs Output Power Vcc = 2. Cin = < 125kHz Tamb = 20Hz, 1kHz 20kHz 0.1 1E-3 ...

  • Page 13

    Fig THD + N vs Output Power Vcc = 3. 0.1 F, Cin = < 125kHz Tamb = 20Hz 20kHz 1kHz 0.1 ...

  • Page 14

    TS4890 Fig THD + N vs Output Power Vcc = Cin = < 125kHz 1 Tamb = 25 C 20kHz 0.1 20Hz, 1kHz 0.01 ...

  • Page 15

    Fig THD + N vs Output Power Vcc = 2. Cin = < 125kHz Tamb = 25 C 20kHz 20Hz 0.1 1kHz 0.01 1E-3 0.01 ...

  • Page 16

    TS4890 Fig THD + N vs Frequency Vcc = 2. 1µ < 125kHz Tamb = 25°C 0.1 20 100 1000 Frequency (Hz) Fig THD + ...

  • Page 17

    Fig THD + N vs Frequency 0.1µ 1µF 0.1 20 100 1000 Frequency (Hz) Fig THD + N vs Frequency 0.1µ 1µF 0.1 20 100 1000 ...

  • Page 18

    TS4890 Fig THD + N vs Frequency 0.1µ 1µF 0.1 20 100 1000 Frequency (Hz) Fig THD + N vs Frequency 0.1µ 1µF 0.1 20 100 ...

  • Page 19

    Fig THD + N vs Frequency 0 0.1 20 100 1000 Frequency (Hz) Fig THD + N vs Frequency 1 Pout = 310mW 0.1 Pout = 620mW 0.01 ...

  • Page 20

    TS4890 Fig THD + N vs Frequency Vcc = 2. 10 < 125kHz Tamb = 25 C Pout = 160mW 0.1 0.01 20 100 1000 Frequency ...

  • Page 21

    Fig Signal to Noise Ratio vs Power Supply with Weighted Filter type A 110 100 RL=8 90 RL= 2.2 2.5 3.0 3.5 Vcc (V) Fig Frequency Response Gain vs Cin, & Cfeed 10 ...

  • Page 22

    TS4890 Fig Current Consumption vs Standby Voltage @ Vcc = 2. 0.0 0.5 1.0 1.5 Vstandby (V) Fig Clipping Voltage vs Power Supply Voltage and Load Resistor 1.0 Tamb ...

  • Page 23

    APPLICATION INFORMATION Fig. 103 : Demoboard Schematic Fig. 104 : SO8 & MiniSO8 Demoboard Components Side TS4890 23/32 ...

  • Page 24

    TS4890 Fig. 105 : SO8 & MiniSO8 Demoboard Top Solder Layer Fig. 106 : SO8 & MiniSO8 Demoboard Bottom Solder Layer BTL Configuration Principle The TS4890 is a monolithic power amplifier with a BTL output type. BTL (Bridge Tied Load) ...

  • Page 25

    Power dissipation and efficiency Hypothesis : • Voltage and current in the load are sinusoidal (Vout and Iout) • Supply voltage is a pure DC source (Vcc) Regarding the load we have : V V sin OUT PEAK and V ...

  • Page 26

    TS4890 Power amplifier design examples Given : • Load impedance : 8 • Output power @ 1% THD+N : 0.5W • Input impedance : 10k min. • Input voltage peak to peak : 1Vpp • Bandwidth frequency : 20Hz to ...

  • Page 27

    Designator C7 100nF C9 Short Circuit C10 Short Circuit C12 1µF 2mm insulated Plug S1, S2, S6, S7 10.16mm pitch 3 pts connector 2.54mm S8 pitch P1 PCB Phono Jack D1* Led 3mm U1 TS4890ID or TS4890IS Application n°2 : ...

  • Page 28

    TS4890 Components : Designator R1 110k / 0.125W R4 22k / 0.125W R5 22k / 0.125W R6 110k / 0.125W R7* (Vcc-Vf_led)/If_led R8 10k / 0.125W C4 470nF C5 470nF C6 100µF C7 100nF C9 Short Circuit C10 Short Circuit ...

  • Page 29

    Note on how to use the PSRR curves (page 8) We have finished a design and we have chosen for the components : • Rin=Rfeed=22k • Cin=100nF • Cb=1µF Now, on fig. 16, we can see the PSRR (input grounded) ...

  • Page 30

    TS4890 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 TS4890 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 ...