TS4962IQT STMicroelectronics, TS4962IQT Datasheet

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... Notebook PCs Description The TS4962 is a differential class-D BTL power amplifier. It can drive up to 2.2 W into a 4 Ω load and 1.4 W into an 8 Ω load achieves outstanding efficiency (88% typ.) compared to standard AB-class audio amps. January 2010 DFN8 TS4962IQT pinout The gain of the device can be controlled via two external gain setting resistors. Pop & ...

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Contents Contents 1 Absolute maximum ratings and operating conditions . . . . . . . . . . . . . 3 2 Application overview . . . . . . . . . . . . . . ...

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TS4962 1 Absolute maximum ratings and operating conditions 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 Thermal resistance ...

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Absolute maximum ratings and operating conditions Table 3. Operating conditions Symbol V Supply voltage CC V Common mode input voltage range IC Standby voltage input: V Device ON STBY Device OFF R Load resistor L Thermal resistance junction to ambient ...

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TS4962 2 Application overview Table 4. External component information Component Input capacitor Table 5. Pin description Pin number Functional description Bypass supply capacitor. Install as close as possible ...

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Application overview Figure 1. Typical application schematics In+ GND Differential In- GND Vcc In+ GND GND + Differential Input - In- Input capacitors are optional GND 6/44 Vcc Stdby 1 Internal Bias 150k GND Rin + 4 - In- Input ...

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TS4962 3 Electrical characteristics Table 6. Electrical characteristics at V with GND = Symbol Supply current input signal, no load Standby current I STBY No input signal, V Output offset voltage ...

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Electrical characteristics Table 6. Electrical characteristics at V with GND = (continued) Symbol V Output voltage noise kHz Unweighted R A-weighted R Unweighted R A-weighted R ...

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TS4962 Table 7. Electrical characteristics amb Symbol Supply current input signal, no load Standby current I STBY No input signal, V Output offset voltage input signal, R Output power ...

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Electrical characteristics Table 7. Electrical characteristics amb Symbol V Output voltage noise kHz Unweighted R A-weighted R Unweighted R A-weighted R Unweighted R A-weighted R Unweighted ...

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TS4962 Table 8. Electrical characteristics at V with GND = Symbol Supply current input signal, no load Standby current I STBY No input signal, V Output offset voltage input signal, R ...

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Electrical characteristics Table 8. Electrical characteristics at V with GND = (continued) Symbol V Output voltage noise kHz Unweighted R A-weighted R Unweighted R A-weighted R ...

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TS4962 Table 9. Electrical characteristics at V with GND = Symbol Supply current input signal, no load Standby current I STBY No input signal, V Output offset voltage input signal, R ...

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Electrical characteristics Table 9. Electrical characteristics at V with GND = (continued) Symbol V Output voltage noise kHz Unweighted R A-weighted R Unweighted R A-weighted R ...

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TS4962 Table 10. Electrical characteristics at V with GND = Symbol Supply current input signal, no load Standby current I STBY No input signal, V Output offset voltage input signal, R ...

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Electrical characteristics Table 10. Electrical characteristics at V with GND = (continued) Symbol V Output voltage noise kHz Unweighted R A-weighted R Unweighted R A-weighted R ...

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TS4962 Table 11. Electrical characteristics at V with GND = Symbol Supply current input signal, no load Standby current I STBY No input signal, V Output offset voltage input signal, R ...

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Electrical characteristics Table 11. Electrical characteristics at V with GND = (continued) Symbol V Output voltage noise kHz Unweighted R A-weighted R Unweighted R A-weighted R ...

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TS4962 3.1 Electrical characteristics curves The graphs shown in this section use the following abbreviations μ μH = pure resistor + very low series resistance inductor ● Filter = LC output filter (1 µF ...

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Electrical characteristics Current consumption vs. power Figure 4. supply voltage 2.5 No load Tamb=25 ° C 2.0 1.5 1.0 0.5 0 Power Supply Voltage (V) Figure 6. Current consumption vs. standby voltage 2.0 1.5 1.0 0.5 0.0 ...

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TS4962 Figure 10. Efficiency vs. output power 100 80 Efficiency 60 40 Power Dissipation 20 0 0.0 0.2 0.4 0.6 0.8 Output Power (W) Figure 12. Output power vs. power supply voltage 3 Ω + ≥ 15 ...

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Electrical characteristics Figure 16. PSRR vs. frequency 0 Vripple = 200mVpp -10 Inputs = Grounded G = 6dB, Cin = 4.7 μ Ω + Filter Δ R/R ≤ 0.1% -30 Tamb = 25 ° C ...

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TS4962 Figure 22. CMRR vs. frequency 0 RL=4 Ω μ H G=6dB Δ Vicm=200mVpp -20 Δ R/R ≤ 0.1% Cin=4.7 μ F Vcc=5V, 3.6V, 2.5V Tamb = 25 ° C -40 -60 100 1000 20 Frequency (Hz) Figure ...

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Electrical characteristics Figure 28. THD+N vs. output power Ω μ 100Hz Vcc=3. 6dB BW < 30kHz Vcc=2.5V 1 Tamb = 25 ° C 0.1 0.01 1E-3 0.01 Output Power ...

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TS4962 Figure 34. THD+N vs. output power Ω μ 1kHz G = 6dB Vcc=3.6V BW < 30kHz Tamb = 25 ° C Vcc=2.5V 1 0.1 1E-3 0.01 Output Power (W) Figure ...

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Electrical characteristics Figure 40. THD+N vs. frequency 10 RL=4 Ω μ H G=6dB Bw < 30kHz Vcc=2.5V 1 Tamb = 25 ° C Po=0.35W 0.1 0.01 50 100 1000 Frequency (Hz) Figure 42. THD+N vs. frequency 10 RL=8 ...

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TS4962 Figure 46. THD+N vs. frequency 10 RL=8 Ω μ H G=6dB Bw < 30kHz Vcc=2.5V 1 Tamb = 25 ° C Po=0.1W 0.1 0.01 50 100 1000 Frequency (Hz) Figure 48. Gain vs. frequency 8 6 Vcc=5V, ...

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Electrical characteristics Figure 52. Gain vs. frequency 8 6 Vcc=5V, 3.6V, 2.5V 4 RL=8 Ω μ H G=6dB 2 Vin=500mVpp Cin=1 μ F Tamb = 25 ° 100 1000 Frequency (Hz) Figure 54. Gain vs. ...

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TS4962 Figure 58. Startup and shutdown times = 3V 6dB Vo1 Vo2 Standby Vo1-Vo2 Figure 60. Startup and shutdown times = 3V 6dB Vo1 Vo2 Standby Vo1-Vo2 Figure 59. ...

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Application information 4 Application information 4.1 Differential configuration principle The TS4962 is a monolithic, fully differential input/output class D power amplifier. The TS4962 also includes a common-mode feedback loop that controls the output bias value to average ...

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TS4962 4.3 Common-mode feedback loop limitations As explained previously, the common-mode feedback loop allows the output DC bias voltage to be averaged at V However, due page 4), the common-mode feedback loop can play its role only ...

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Application information 4.5 Decoupling of the circuit A power supply capacitor, referred The TS4962 has a typical switching frequency at 250 kHz and output fall and rise time about 5 ns. Due to these very fast transients, ...

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TS4962 4.9 Single-ended input configuration It is possible to use the TS4962 in a single-ended input configuration. However, input coupling capacitors are needed in this configuration. input application. Figure 61. Single-ended input typical application GND All formulas are identical except ...

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Application information We have the following equations. In general, for mixed situations (single-ended and differential inputs best to use the same rule, that is, equalize impedance on both TS4962 inputs. 4.10 Output filter considerations The TS4962 is designed ...

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TS4962 In the case where the distance between the TS4962 output and the speaker terminals is high possible to observe low frequency EMI issues due to the fact that the typical operating frequency is 250 kHz. In this ...

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Application information 4.11.2 Example 2: one differential input plus one single-ended input Figure 65. Typical application schematic with one differential input and one single-ended input E1+ With (R in kΩ 36/44 Standby Stdby 1 Internal R2 Bias E2+ ...

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TS4962 5 Demonstration board A demonstration board for the TS4962 is available. For more information about this demonstration board, refer to the application note AN2406 "TS4962IQ class D audio amplifier evaluation board user guidelines" available on www.st.com. Figure 66. Schematic ...

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Demonstration board Figure 68. Bottom layer Figure 69. Top layer 38/44 Doc ID 10968 Rev 8 TS4962 ...

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TS4962 6 Recommended footprint Figure 70. Recommended footprint for TS4962 DFN package 2.2mm 1.8mm 0.8mm 1.4mm Doc ID 10968 Rev 8 Recommended footprint 0.35mm 0.65mm 39/44 ...

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Package information 7 Package information In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at: www.st.com. ...

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TS4962 Figure 71. DFN8 exposed pad package mechanical drawing (pitch 0.65 mm) Table 12. DFN8 exposed pad package mechanical data (pitch 0.65 mm) Ref ...

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... Ordering information 8 Ordering information Table 13. Order codes Part number TS4962IQT 42/44 Temperature Package range -40°C, +85°C DFN8 Doc ID 10968 Rev 8 TS4962 Packaging Marking Tape & reel K962 ...

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TS4962 9 Revision history Table 14. Document revision history Date 31-May-2006 16-Oct-2006 10-Jan-2007 18-Jan-2010 Revision Modified package information. Now includes only standard DFN8 5 package. Added curves in Section 3: Electrical evaluation board information in 6 Added recommended footprint. Added ...

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