TS482IST STMicroelectronics

TS482 100mW Stereo Headphone Amplifier Operating from Vcc=2V to 5.5V TS482ID, TS482IDT - SO-8 100mW into 16 at 5V 1 8 VCC OUT (1) 38mW into 16 at 3.3V 2 7 O VIN- (1) UT (2) 11.5mW into 16 at 2V 3 6 VIN- (2) VIN+ (1) 4 5 GND VIN+ (2) Switch ON/OFF click reduction circuitry High power supply rejection ratio: 85dB at 5V TS482IST - MiniSO-8 High signal-to-noise ratio: 110dB(A) at 5V 1 8 VCC OUT (1) High crosstalk immunity: 100dB (F=1kHz) 2 7 O VIN- (1) UT (2) Rail-to-rail input and output V 3 6 VIN- (2) IN+ (1) 4 5 GND VIN+ (2) Unity-gain stable Available in SO-8, MiniSO-8 & DFN8 TS482IQT - DFN8 Description OUOUTT (1(1)) 11 88 VcVccc The TS482 is a dual audio power amplifier able to VVININ - - ((1)1) 22 77 OUOUTT (2(2)) drive a 16 or 32 stereo headset down to low VVININ + + ( (11)) 33 VVININ - - ((2)2) 66 44 voltages. GNGNDD 55 VVININ + + ( (22)) It is delivering up to 100mW per channel (into 16 loads) of continuous average power with 0.1% Typical application schematic THD+N from a 5V power supply. RRffeed1eed1 The unity gain stable TS482 can be configured by 1F1F VcVccc 3.3.9k9k external gain-setting resistors. RRpolpol ++ VcVccc CsCs 100k100k RRiigghht Int In CiCinn11 88 Applications 3.3.9k9k 220F220F 22 RRLL==32O32Ohmhmss -- 11 ++ ++ RiRinn11 33 ++ 2.2.2F2F CbCb Stereo headphone amplifier CCoutout11 TTSS482482 ++ CCoutout22 55 RRLL==32Ohm32Ohmss 2.2.2F2F ++ 77 11FF ++ RiRinn22 Optical storage 66 -- ++ 220F220F 3.3.9k9k 44 LefLeftt I Inn CiCinn22 Computer motherboard 100k100k RRpolpol PDA, organizers & notebook computers 3.3.9k9k RRffeed2eed2 High-end TV, set-top box, DVD players Sound cards Order Codes Part Number Temperature Range Package Packing Marking TS482ID/IDT SO-8 Tube or Tape & Reel TS482IST -40, +85C miniSO-8 482I Tape & Reel TS482IQT DFN8 Rev 2 November 2005 1/26 www.st.com 26 ++ ++Absolute Maximum Ratings TS482 1 Absolute Maximum Ratings Table 1. Key parameters and their absolute maximum ratings Symbol Parameter Value Unit (1) V 6V CC Supply voltage V -0.3 to V +0.3 Input Voltage V i CC T Operating Free Air Temperature Range -40 to + 85 C oper T Storage Temperature -65 to +150 C stg T Maximum Junction Temperature 150 C j Thermal Resistance Junction to Ambient 175 SO8 R C/W thja 215 MiniSO8 70 DFN8 (2) Power Dissipation 0.71 SO-8 Pd W 0.58 MiniSO-8 1.79 DFN8 ESD Human Body Model (pin to pin) 2 kV ESD Machine Model - 220pF - 240pF (pin to pin) 200 V Latch-up Latch-up Immunity (all pins) 200 mA Lead Temperature (soldering, 10sec) 250 C Lead Temperature (soldering, 10sec) for lead-free 260 C (3) Output Short-Circuit Duration see note 1. All voltages values are measured with respect to the ground pin. 2. Pd has been calculated with Tamb = 25C, Tjunction = 150C. 3. Attention must be paid to continuous power dissipation. Exposure of the IC to a short circuit on one or two amplifiers simultaneously can cause excessive heating and the destruction of the device. Table 2. Operating conditions Symbol Parameter Value Unit V Supply Voltage 2 to 5.5 V CC R Load Resistor >= 16 L Load Capacitor C R = 16 to 100 pF 400 L L 100 R > 100 L G to V Vicm Common Mode Input Voltage Range V ND CC Thermal Resistance Junction to Ambient SO-8 150 R C/W thja MiniSO-8 190 (1) 41 DFN8 1. When mounted on a 4-layer PCB. 2/26