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TS4902 Dataheets PDF



Part Number TS4902
Manufacturers STMicroelectronics
Logo STMicroelectronics
Description 300mW at 3.3V SUPPLY AUDIO POWER AMPLIFIER WITH STANDBY MODE ACTIVE LOW
Datasheet TS4902 DatasheetTS4902 Datasheet (PDF)

TS4902 300mW at 3.3V SUPPLY AUDIO POWER AMPLIFIER WITH STANDBY MODE ACTIVE LOW s OPERATING FROM VCC = 2.2V to 5.5V s 0.7W OUTPUT POWER @ Vcc=5V, THD=1%, f=1kHz, with an 8Ω load PIN CONNECTIONS (top view) s 0.3W OUTPUT POWER @ Vcc=3.3V, THD=1%, f=1kHz, with an 8Ω load s ULTRA LOW CONSUMPTION IN STANDBY MODE (10nA) s 77dB PSRR @ 217Hz from 5V to 2.2V s ULTRA LOW POP & CLICK s ULTRA LOW DISTORTION (0.1%) s UNITY GAIN STABLE s AVAILABLE IN MiniSO8 & SO8 DESCRIPTION The TS4902 is an audio power amp.

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TS4902 300mW at 3.3V SUPPLY AUDIO POWER AMPLIFIER WITH STANDBY MODE ACTIVE LOW s OPERATING FROM VCC = 2.2V to 5.5V s 0.7W OUTPUT POWER @ Vcc=5V, THD=1%, f=1kHz, with an 8Ω load PIN CONNECTIONS (top view) s 0.3W OUTPUT POWER @ Vcc=3.3V, THD=1%, f=1kHz, with an 8Ω load s ULTRA LOW CONSUMPTION IN STANDBY MODE (10nA) s 77dB PSRR @ 217Hz from 5V to 2.2V s ULTRA LOW POP & CLICK s ULTRA LOW DISTORTION (0.1%) s UNITY GAIN STABLE s AVAILABLE IN MiniSO8 & SO8 DESCRIPTION The TS4902 is an audio power amplifier designed to provide the best price to power ratio while preserving high audio quality. Available in MiniSO8 & SO8 package, it is capable of delivering up to 0.7W of continuous RMS ouput power into an 8Ω load @ 5V. TS4902 is also exhibiting an outstanding 0.1% distortion level (THD) from a 5V supply for a Pout of 200mW RMS. An externally controlled standby mode reduces the supply current to less than 10nA. It also includes an internal thermal shutdown protection. The unity-gain stable amplifier can be configured by external gain setting resistors. APPLICATIONS s Mobile Phones (Cellular / Cordless) s PDAs s Portable Audio Devices ORDER CODE Part Number TS4902IST TS4902ID Temperature Range -40, +85°C Package TS4902IS-TS4902IST - MiniSO8 Standby Bypass VIN+ VIN- 1 2 3 4 8 7 6 5 VOUT2 GND VCC VOUT1 TS4902ID-TS4902IDT - SO8 Standby Bypass VIN+ VIN- 1 2 3 4 8 7 6 5 VOUT2 GND VCC VOUT1 TYPICAL APPLICATION SCHEMATIC Cfeed Rfeed VCC 6 Audio Input Cin 3 Vin+ + RL 8 Ohms VCC AV = -1 2 1 Bypass Standby Bias GND Cb 7 TS4902 + Vout 2 8 Cs Rin 4 Vin- - V C Vout 1 5 ST • D • Rstb S = MiniSO Package (MiniSO) is only available in Tape & Reel (ST) D = Small Outline Package (SO) - also available in Tape & Reel (DT) January 2002 1/19 TS4902 ABSOLUTE MAXIMUM RATINGS Symbol VCC Vi Toper Tstg Tj Rthja Supply voltage Input Voltage 2) 1) Parameter Value 6 GND to VCC -40 to + 85 -65 to +150 150 175 215 See the power derating curves Fig 20. 2 200 Class A 250 Unit V V °C °C °C °C/W Operating Free Air Temperature Range Storage Temperature Maximum Junction Temperature Thermal Resistance Junction to Ambient 3) SO8 MiniSO8 Power Dissipation 4) Pd ESD Human Body Model ESD Machine Model Latch-up Latch-up Immunity Lead Temperature (soldering, 10sec) 1. 2. 3. 4. All voltages values are measured with respect to the ground pin. The magnitude of input signal must never exceed VCC + 0.3V / G ND - 0.3V Device is protected in case of over temperature by a thermal shutdown active @ 150°C. Exceeding the power derating curves during a long period, will cause abnormal operation. kV V °C OPERATING CONDITIONS Symbol VCC VICM VSTB RL Rthja Supply Voltage Common Mode Input Voltage Range Standby Voltage Input : Device ON Device OFF Load Resistor Thermal Resistance Junction to Ambient 1) SO8 MiniSO8 Parameter Value 2.2 to 5.5 GND to VCC - 1.5V 1.5 ≤ VSTB ≤ VCC GND ≤ VSTB ≤ 0.5 4 - 32 150 190 Unit V V V Ω °C/W 1. This thermal resistance can be reduced with a suitable PCB layout (see Power Derating Curves) 2/19 TS4902 ELECTRICAL CHARACTERISTICS VCC = +5V, GND = 0V, Tamb = 25°C (unless otherwise specified) Symbol ICC ISTANDBY Voo Po THD + N PSRR ΦM GM GBP Parameter Supply Current No input signal, no load Standby Current 1) No input signal, Vstdby = GND, RL = 8Ω Output Offset Voltage No input signal, RL = 8Ω Output Power THD = 1% Max, f = 1kHz, RL = 8Ω Total Harmonic Distortion + Noise Po = 250mW rms, Gv = 2, 20Hz < f < 20kHz, RL = 8Ω Power Supply Rejection Ratio 2) f = 217Hz, RL = 8Ω, RFeed = 22KΩ, Vripple = 200mV rms Phase Margin at Unity Gain RL = 8Ω, CL = 500pF Gain Margin RL = 8Ω, CL = 500pF Gain Bandwidth Product RL = 8Ω Min. Typ. 6 10 5 0.7 0.15 77 70 20 2 Max. 8 1000 20 Unit mA nA mV W % dB Degrees dB MHz 1. Standby mode is actived when Vstdby is tied to GND 2. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the surimposed sinus signal to Vcc @ f = 217Hz VCC = +3.3V, GND = 0V, Tamb = 25°C (unless otherwise specified)3) Symbol ICC ISTANDBY Voo Po THD + N PSRR ΦM GM GBP Parameter Supply Current No input signal, no load Standby Current 1) No input signal, Vstdby = GND, RL = 8Ω Output Offset Voltage No input signal, RL = 8Ω Output Power THD = 1% Max, f = 1kHz, RL = 8Ω Total Harmonic Distortion + Noise Po = 250mW rms, Gv = 2, 20Hz < f < 20kHz, RL = 8Ω Power Supply Rejection Ratio 2) f = 217Hz, RL = 8Ω, RFeed = 22KΩ, Vripple = 200mV rms Phase Margin at Unity Gain RL = 8Ω, CL = 500pF Gain Margin RL = 8Ω, CL = 500pF Gain Bandwidth Product RL = 8Ω Min. Typ. 5.5 10 5 300 0.15 77 70 20 2 Max. 8 1000 20 Unit mA nA mV mW % dB Degrees dB MHz 1. Standby mode is actived when Vstdby is tied to GND 2. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the surimposed sinus signal to Vcc @ f = 217Hz 3. All electrical values are made by correlation between 2.6V and 5V measurements 3/19 TS4902 ELECTRICAL CHARACTERISTICS VCC = 2.6V, GND = 0V, Tamb = 25°C (unless otherwise specified) Symbol ICC ISTANDBY Voo Po TH.


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