TS4994 ST Microelectronics, Inc., TS4994 Datasheet

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... Ultra fast startup time: 15ms typ. Available in flip-chip 300um/9 bumps, DFN10 3x3, 0.5mm pitch & miniso-8 All lead-free packages Description The TS4994 is an audio power amplifier capable of delivering 1W of continuous RMS output power into an 8 load @ 5V. Thanks to its differential inputs, it exhibits outstanding noise immunity. ...

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... Bypass Optional + Cb 1u Standby Mode Stdby GND GND GND GND VCC GND VCC Application Component Information IN . FEED . (fcl = GND Vo Ohms TS4994IJ Rfeed2 20k + Cs 1u GND Vo Ohms Bias TS4994IQ Rfeed2 20k ...

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... Figure 3: Typical Application Mini-SO8 Version Diff. input - GND Diff. Input + VCC + Cs 1u Rfeed1 20k 7 GND VCC Cin1 Rin1 2 Vin- - 20k 220nF Cin2 Rin2 3 Vin+ + 20k 220nF 4 Bypass Bias Optional + Cb 1u Standby Stdby GND GND 1 6 Rfeed2 GND 20k GND VCC Vo Ohms TS4994IS TS4994 3/32 ...

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... TS4994 2 Absolute Maximum Ratings Table 1: Key parameters and their absolute maximum ratings Symbol 1 VCC Supply voltage 2 V 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 DFN10 Flip-Chip Mini-SO8 Pd Power Dissipation ...

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... 20kHz) F 20kHz 25°C (unless otherwise specified) amb Min. Typ. Max 1000 0 0.9 0.6 CC 0.8 1 0.5 100 90 100 2 6 5 TS4994 Unit MHz V RMS ms 5/32 ...

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... TS4994 Table 4: Electrical Characteristics: V measurements at 2.6V and 5V) GND = 0V, T Symbol I Supply Current No input signal, no load CC Standby Current No input signal, Vstdby = V I STANDBY No input signal, Vstdby = V Differential Output Offset Voltage Voo No input signal Input Common Mode Voltage V ICM CMRR -60dB Output Power ...

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... 20kHz) F 20kHz 25°C (unless otherwise specified) amb Min. Typ. Max 1000 0 0.6 0.9 200 250 0.5 100 90 100 2 6 5 TS4994 Unit MHz V RMS ms 7/32 ...

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... TS4994 Figure 4: Current consumption vs. power supply voltage 4.0 No load Tamb=25 C 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 Power Supply Voltage (V) Figure 5: Current consumption vs. standby voltage 4.0 3.5 3.0 Standby mode=0V 2.5 Standby mode=5V 2.0 1.5 1.0 0.5 0 Standby Voltage (V) Figure 6: Current consumption vs. standby voltage 3.5 3.0 2.5 Standby mode=0V Standby mode=3.3V 2.0 1.5 1.0 0.5 0.0 0.0 0.6 1.2 1.8 Standby Voltage (V) 8/32 Figure 7: Current consumption vs. standby ...

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... Tamb = 25 C 1.00 0.75 0.50 0.25 0.00 2.5 3.0 3.5 4.0 Vcc (V) 1.0 0.8 Vcc=5V Vcc=4.5V 0.6 Vcc=4V 0.4 0.2 Vcc=3.5V Vcc=3V Vcc=2.5V 0 Load Resistance 1.2 Heat sink surface 1.0 (See demoboard) 0.8 0.6 0.4 0.2 No Heat sink 0 Ambiant Temperature ( C) TS4994 16 32 4.5 5.0 THD+N= 1kHz BW < 125kHz Tamb = 100mm 100 125 9/32 ...

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... TS4994 Figure 16: Power derating curves 1.5 with 4 layers PCB 1.0 0.5 AMR Value 0 Ambiant Temperature ( C) Figure 17: Power derating curves 0.6 Nominal Value 0.4 AMR Value 0.2 0 Ambiant Temperature ( C) Figure 18: Open loop gain vs. frequency 60 Gain 40 20 Phase 0 Vcc = 5V - 500pF Tamb = 25 C -40 0 100 Frequency (kHz) 10/32 Figure 19: Open loop gain vs ...

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... Frequency (Hz) 0 Vcc = 2.6V Vripple = 200mVpp Inputs = Grounded Cin = 4 Cb=0.1 F Tamb = 25 C Cb=0. 100 1000 Frequency (Hz) 0 Vcc = 5V Vripple = 200mVpp Inputs = Grounded Av = 2.5, Cin = 4 Cb=0.1 F Tamb = 25 C Cb=0. 100 1000 Frequency (Hz) TS4994 Cb=0 20k 10000 Cb=0 10000 20k Cb=0 10000 20k 11/32 ...

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... TS4994 Figure 28: PSRR vs. frequency 0 -10 Vcc = 3.3V Vripple = 200mVpp -20 Inputs = Grounded - 2.5, Cin = 4 -50 Tamb = 25 C -60 Cb=0.47 F -70 Cb=1 F -80 -90 -100 -110 -120 20 100 1000 Frequency (Hz) Figure 29: PSRR vs. frequency 0 -10 Vcc = 2.6V -20 Vripple = 200mVpp Inputs = Grounded - 2.5, Cin = 4 -50 Tamb = 25 C -60 Cb=0.47 F -70 ...

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... Cin = 470 F - Cb=1 F -40 Tamb = 25 C Cb=0.47 F -50 Cb=0.1 F -60 Cb=0 -70 -80 -90 20 100 1000 Frequency (Hz) 0 Vcc = 5V -10 Vic = 200mVpp - 2.5, Cin = 470 -30 Tamb = 25 C -40 Cb=1 F -50 Cb=0.47 F Cb=0.1 F -60 Cb=0 -70 -80 -90 20 100 1000 Frequency (Hz) TS4994 10000 20k 10000 20k 10000 20k 13/32 ...

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... TS4994 Figure 40: CMRR vs. frequency 0 Vcc = 3.3V -10 Vic = 200mVpp - 2.5, Cin = 470 -30 Tamb = 25 C -40 Cb=1 F -50 Cb=0.47 F Cb=0.1 F -60 Cb=0 -70 -80 -90 -100 20 100 1000 Frequency (Hz) Figure 41: CMRR vs. frequency 0 Vcc = 2.6V -10 Vic = 200mVpp - 2.5, Cin = 470 -30 Tamb = 25 C -40 Cb=1 F -50 Cb=0.47 F Cb=0.1 F -60 Cb=0 -70 -80 -90 -100 20 100 ...

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... Vcc=2. 1kHz Av = 7.5 Vcc=3. < 125kHz Vcc=5V Tamb = 25 C 0.1 1E-3 0.01 0.1 Output Power ( 20kHz Vcc=2. < 125kHz Vcc=3.3V 1 Tamb = 25 C Vcc=5V 0.1 1E-3 0.01 0.1 Output Power ( 20kHz Av = 2.5 Vcc=2. < 125kHz Vcc=3.3V 1 Tamb = 25 C Vcc=5V 0.1 1E-3 0.01 0.1 Output Power (W) TS4994 15/32 ...

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... TS4994 Figure 52: THD+N vs. output power 20kHz Av = 7.5 Vcc=2. < 125kHz Vcc=3.3V Tamb = Vcc=5V 0.1 1E-3 0.01 Output Power (W) Figure 53: THD+N vs. output power Vcc=2. 20Hz Vcc=3. < 125kHz Tamb = 25 C 0.1 Vcc=5V 0.01 1E-3 1E-3 0.01 Output Power (W) Figure 54: THD+N vs. output power Vcc=2. 20Hz ...

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... BW < 125kHz Tamb = 25 C F=1kHz 0.1 F=20Hz 0.01 1E-3 0.01 0.1 Output Power ( Vcc = 2. F=20kHz BW < 125kHz Tamb = 25 C F=1kHz 0.1 F=20Hz 0.01 1E-3 0.01 Output Power ( < 125kHz Vcc=2.6V, Po=225mW Tamb = 25 C 0.1 Vcc=5V, Po=850mW 20 100 1000 Frequency (Hz) TS4994 1 0.1 10000 20k 17/32 ...

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... TS4994 Figure 64: THD+N vs. frequency < 125kHz Vcc=2.6V, Po=225mW Tamb = 25 C 0.1 0.01 1E-3 20 100 1000 Frequency (Hz) Figure 65: THD+N vs. frequency 7 < 125kHz Vcc=2.6V, Po=225mW 1 Tamb = 25 C 0.1 0.01 20 100 1000 Frequency (Hz) Figure 66: THD+N vs. frequency 7 < 125kHz Vcc=2.6V, Po=225mW ...

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... Electrical Characteristics Figure 70: SNR vs. power supply voltage with a weighted filter 110 RL=16 105 100 2 THD+N < 0.7% Tamb = 2.5 3.0 3.5 Power Supply Voltage (V) Figure 71: Startup time vs. bypass capacitor 20 Tamb=25 C Vcc= Vcc=2.6V 0 0.0 0.4 0.8 1.2 Bypass Capacitor RL=8 4.0 4.5 5.0 Vcc=3.3V 1.6 2.0 TS4994 19/32 ...

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... TS4994 4 Application Information 4.1 Differential Configuration Principle The TS4994 is a monolithic full-differential input/ output power amplifier. The TS4994 also includes a common mode feedback loop that controls the output bias value to average it at Vcc/2 for any DC common mode input voltage. This allows the ...

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... R ) -93dB. This example is a worst case scenario, where bypass capacitor each illustrates the fact that with only a small bypass capacitor, the TS4994 produce high PSRR performance. and C can be neglected. If in1,2 feed1,2 From DC to 200Hz, C decreases from infinite to a finite value and ...

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... Cb=0 The two following graphs show typical application of TS4994 with four 0.1% tolerances and a random choice for them. Figure 75: PSRR vs. frequency with random choice condition 10000 20k 0 -10 Vcc = 5V, Vripple = 200mVpp - Cin = 4.7 F R/R -30 Tamb = 25 C, Inputs = Grounded ...

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... This example worst case scenario where each resistor has extreme illustrates the fact that for CMRR, good matching is essential. As with the PSRR, due to self-generated noise, the TS4994 CMRR limitation would be about -110dB. Figures 77 and versus bypass capacitor C condition ( R=0.1%). Figure 77: CMRR vs. frequency worst case Cb=0 -10 ...

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... TS4994 Figure 79: CMRR vs. frequency with random choice condition 0 Vcc = 5V -10 Vic = 200mVpp - Cin = 470 F R/R 0.1 -30 Tamb = 25 C -40 -50 Cb=1 F Cb=0 -60 -70 -80 -90 20 100 1000 Frequency (Hz) Figure 80: CMRR vs. frequency with random choice condition 0 Vcc = 2.5V -10 Vic = 200mVpp - Cin = 470 F R/R 0.1 -30 ...

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... The maximum theoretical value is reached when Vpeak = Vcc The maximum die temperature allowable for the TS4994 overheating, a thermal shutdown set to 150°C, puts the TS4994 in standby until the temperature the die is reduced by about 5°C. To calculate the maximum ambient temperature (W) ...

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... Note: In shutdown mode, Bypass pin and Vin+, Vin- pins close to zero pop for all common applications possible and C in feed in In addition, when the TS4994 is set in standby, due to the high impedance output stage configuration in this mode, no pop is possible. Figure 81: Single ended input typical Ve GND Optional Application Information has a value other than 1µ ...

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... The new formula is 4.12 Demoboard A demoboard for the TS4994 is available, however it is designed only for the TS4994 in the DFN10 package. However, we can guarantee that Figure 82: Demoboard schematic Cn1 Pos. Input GND Neg. Input GND Cn2 Figure 83: Components location ...

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... TS4994 Figure 85: Bottom layer 28/32 Application Information ...

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... Package Mechanical Data 5 Package Mechanical Data 5.1 MiniSO8 package TS4994 29/32 ...

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... TS4994 5.2 Flip-chip package (9 bumps) Dimensions in millimeters unless otherwise indicated. PIN OUT (top view) Vcc Vcc IN+ IN IN- IN Stby Mode Stby Mode Gnd Gnd Balls are underneath 1.63 mm 1.63 mm 0.5mm 0.5mm 0.5mm 0.5mm ...

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... Package Mechanical Data 5.3 DFN10 package Dimensions in millimeters unless otherwise indicated. 0.35 0.35 0.8 0.8 3.0 3 0.25 0.25 0.5 0.5 TS4994 3.0 3.0 31/32 ...

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... Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America First Release The ST logo is a registered trademark of STMicroelectronics All other names are the property of their respective owners © 2004 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com Description of Changes TS4994 32/32 ...