TS4890IST STMicroelectronics, TS4890IST Datasheet
TS4890IST
Specifications of TS4890IST
TS4890IST
Available stocks
Related parts for TS4890IST
TS4890IST 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 5 5 ...
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 ...