TS4974IQT STMicroelectronics, TS4974IQT Datasheet
TS4974IQT
Specifications of TS4974IQT
Related parts for TS4974IQT
TS4974IQT Summary of contents
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Features ■ Operates from ■ Zero pop & click ■ output power @ THD = 1 kHz, with 8 Ω load ■ ...
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Contents Contents 1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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TS4974 1 Absolute maximum ratings Table 1. Absolute maximum ratings Symbol V Supply voltage CC V Input voltage i T Operating free air temperature range oper T Storage temperature stg T Maximum junction temperature j R Thermal resistance junction to ...
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Typical application schematics 2 Typical application schematics Figure 1. Typical application schematics for the TS4974 Vin- P1 Vin+ P2 Table 3. External component descriptions Components Rpu1, Rpu2 Rpd1, Rpd2 4/25 VCC VCC Rpu1 Rpu2 ...
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TS4974 3 Electrical characteristics Table GND = Symbol I Supply current, no input signal, no load CC Standby current I STBY No input signal, V STBY Volume control UP/DOWN current I ...
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Electrical characteristics Table +3.3 V, GND = Symbol Supply current input signal, no load Standby current I STBY No input signal, V STBY Volume control UP/DOWN current I U/D 0 ...
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TS4974 Table +2.6V, GND = 0V Symbol Supply current input signal, no load Standby current I STBY No input signal, V STBY Volume control UP/DOWN current I U/D 0 ≤ V ≤ ...
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Electrical characteristics Table 7. Output noise G=+12 dB G=+6 dB G=0 dB G=-12 dB G=-33 dB 8/25 Unweighted filter kHz V (µA) out 22 21 TS4974 A-weighted filter V (µA) out 15 14.5 ...
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TS4974 Figure 2. THD+N vs. output power 10 Ω 0dB F = 1kHz μ < 125kHz ° Tamb = 25 C Vcc=2.6V 1 0.1 1E-3 0.01 Output power (W) Figure ...
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Electrical characteristics Figure 8. THD+N vs. output power 10 Ω 0dB F = 20kHz μ Vcc=3.3V BW < 125kHz ° Tamb = 25 C Vcc=2.6V 1 0.1 1E-3 0.01 Output power ...
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TS4974 Figure 14. PSRR vs. frequency 0 Vcc = 5V Vripple = 200mVpp - 0dB Inputs Grounded ° Tamb = 25 C -40 Cb=1, 0.47, 0.1 -60 -80 -100 20 100 Frequency (Hz) Figure 16. PSRR vs. frequency ...
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Electrical characteristics Figure 20. CMRR vs. frequency 0 Vcc = 5V ≥ Ω -10 Tamb = 25°C -20 -30 -40 G=12dB μ Cb=1, 0.47, 0.1 F -50 -60 -70 -80 100 Frequency (Hz) Figure 22. CMRR vs. frequency ...
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TS4974 Figure 26. SNR vs. supply voltage 110 Unweighted filter (20Hz to 20kHz) 108 F = 1kHz G = 12dB 106 THD + N < 0.5% 104 ° Tamb = 25 C 102 100 Ω RL=8 92 ...
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Electrical characteristics Figure 32. Standby voltage vs. supply current Figure 33. Frequency response 4.0 No load ° Tamb = 25 C 3.5 3.0 2.5 Vcc=2.6V 2.0 1.5 1.0 0.5 0.0 0.0 0.5 1.0 Vstby (V) Figure 34. Frequency response 14 ...
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TS4974 Figure 38. Power derating curves 1.5 1.0 0.5 AMR Value 0 Ambiant Temperature ( C) with 4 layers PCB 75 100 125 Electrical characteristics 15/25 ...
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Application information 4 Application information 4.1 Differential configuration principle The TS4974 is a monolithic full-differential input/ output power amplifier with a digital volume control. It has an internal gain range of - +12 dB, by steps of ...
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TS4974 4.3 Power dissipation and efficiency Assumptions: ● Load voltage and current are sinusoidal (V ● Supply voltage is a pure DC source (V The output voltage is: and and Therefore, the average current delivered by the supply voltage is: ...
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Application information and the maximum value is obtained when: and its value is: Equation 3 Note: This maximum value is only dependent on the power supply voltage and load values. The efficiency is the ratio between the output power and ...
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TS4974 4.4 Decoupling of the circuit Two capacitors are needed to correctly bypass the TS4974. A power supply bypass capacitor C and a bias voltage bypass capacitor has particular influence on the THD+N in the high frequency ...
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Application information 4.7 Pop performance Due to its fully differential structure, the pop performance of the TS4974 is close to perfect. However, due to mismatching between internal resistors R capacitors C , some noise might remain at startup. To eliminate ...
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TS4974 The volume is controlled by means of two pins, UP/DVC and DOWN/DVC. When the V voltage is applied, it activates the increase or decrease in gain. When one of the input pins is grounded, volume changing is activated. When ...
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Application information 4.10 Notes on PSRR measurement What is the PSRR? The PSRR is the power supply rejection ratio. The PSRR of a device is the ratio between a power supply disturbance and the result on the output. In other ...
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... These packages have a Lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an STMicroelectronics trademark. ECOPACK specifications are available at: www.st.com. Table 8. ...
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... Ordering information 6 Ordering information Table 9. Order codes Part number TS4974IQT 7 Revision history Date 1-Nov-2005 1-Oct-2006 25-Oct-2006 10-May-2007 24/25 Temperature Package range -40° +85° C DFN10 Revision 1 Mechanical data updated for DFN10 package. 2 Preliminary data. 3 Final datasheet. Updated Figure 1, Figure Added Table 3. 4 Modified Section 4 ...
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... TS4974 Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...