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Part: TS486IDT
Category:
Description: Stereo Headphone Amplifier With Standby Active Low
Company: ST Microelectronics, Inc.
Datasheet: Download TS486IDT datasheet File size : 339 kB
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Datasheet text preview:
TS48 6 TS48 7
100mW STEREO HEADPHONE AMPLIFIER WITH STANDBY MO DE
s OPERATIN G FROM Vcc=2V to 5.5V s STANDBY MODE ACTIVE LOW (TS486) or s OUTPUT POWER: 102mW @5V, 38mW s LOW CURRENT CONSUMPTION: 2.5mA max s High Signal-to-Noise ratio: 103dB(A) at 5V s High Crosstalk immunity: 83dB (F=1kHz) s PSRR: 58 dB (F=1kHz), inputs grounded s ON/OFF click reduction circuitry s Unity-Gain Stable s SH ORT CIRCUIT LIMITATION s Available in SO8, MiniSO8 & DFN 3x3mm
DESCRIPTION The TS486/7 is a dual audio power amplifier capable of driving, in single-ended mode, either a 16 or a 32 stereo headset. Capable of descending to low voltages, it delivers up to 90mW per channel (into 16 loads) of continuous average power with 0.3% THD+N in the audio bandwitdth from a 5V power supply. An externally-controlled standby mode reduces the supply current to 10nA (typ.). The unity gain stable TS486/7 can be configured by external gain-setting resistors or used in a fixed gain version. APPLICATIONS
TS486-IQT, TS486-1IQT, TS486-2IQT, TS486-4IQT: DFN8
PIN CONNECTIONS (top view)
TS486IDT: SO8, TS486IST, TS486-1IST, TS486-2IST, TS486-4IST: MiniSO8
HIGH (TS487)
@3.3V into 16 with 0.1% THD+N max (1kHz)
O UT (1) VIN (1 ) BY PASS GND
1 2 3 4
8 7 6 5
VCC OUT (2) VIN ( 2) S HUTDO WN
OUT
(1)
1 2 3 4
8 7 6 5
Vcc OUT (2) VIN (2) SHUTDO WN
VIN (1) BYPASS GND
TS487IDT: SO8, TS487IST, TS487-1IST, TS487-2IST, TS487-4IST: MiniSO8
s Headphone Amplifier s Mobile phone, PDA, computer motherboard s High end TV, portable audio player
ORDER CODE
Part Temperature Package Number Range: I DSQ TS486 TS487 TS486 TS486-1 TS486-2 TS486-4 TS487 TS487-1 TS487-2 TS487-4 · · · tba tba tba · tba tba tba · tba tba tba · tba tba tba Gain Marking
OUT (1) VIN (1) BY PASS GND
1 2 3 4
8 7 6 5
V CC OUT (2) V IN (2) SHUTD OWN
-40, +85°C
external TS486I external TS487I external K86A x1/0dB K86B x2/6dB K86C x4/12dB K86D external K87A x1/0dB K87B x2/6dB K87C x4/12dB K87D
TS487-IQT, TS487-1IQT, TS487-2IQT, TS487-4IQT: DFN8
OUT (1) VIN (1) BYPASS GND
1 2 3 4
8 7 6 5
Vcc OUT (2) VIN (2) SHUTDOWN
MiniSO & DFN only available in Tape & Reel with T suffix, SO is available in Tube (D) and in Tape & Reel (DT)
June 2003
1/31
TS486-TS487
AB SOLUTE MAXIMUM RATINGS
Symbol VCC Vi Tstg Tj Rthja Supply voltage Input Voltage Storage Temperature Maximum Junction Temperature Thermal Resistance Junction to Ambient SO8 MiniSO8 DFN8 Power Dissipation 2) SO8 MiniSO8 DFN8
1)
Parameter
Value 6 -0.3v to VCC +0.3v -65 to +150 150 175 215 70 0.71 0.58 1.79 1.5 100 200 250 continous 4)
Unit V V °C °C °C/W
Pd
W
Human Body Model (pin to pin): TS486, TS4873) ESD Machine Model - 220pF - 240pF (pin to pin) Latch-up Latch-up Immunity (All pins) Lead Temperature (soldering, 10sec) ESD Output Short-Circuit to Vcc or GND
1. All voltage values are measured with respect to the ground pin. 2. Pd has been calculated with Tamb = 25°C, Tjunction = 150°C.
kV V mA °C
3. TS487 stands 1.5KV on all pins except standby pin which stands 1KV. 4. Attention must be paid to continous power dissipation (VDD x 300mA). Exposure of the IC to a short circuit for an extended time period is dramatically reducing product life expectancy.
OPERATING CONDITIONS
Symbol VCC RL Toper CL Supply Voltage Load Resistor Operating Free Air Temperature Range Load Capacitor RL = 16 to 100 RL > 100 Standby Voltage Input TS486 ACTIVE / TS487 in STANDBY TS486 in STANDBY / TS487 ACTIVE Thermal Resistance Junction to Ambient SO8 MiniSO8 DFN82) Parameter Value 2 to 5.5 16 -40 to + 85 400 100 1.5 VSTB VCC GND VSTB 0.4 1) 150 190 41 Unit V °C pF
VSTB
V
RTHJA
1.
°C/W
T he minimum current consumption (ISTANDBY) is guaranteed at GND (TS486) or VC C (TS487) for the whole temperature range.
2.
When mounted on a 4-layer PCB.
2/31
TS486-TS487
FIXED GAIN VERSION SPECIFIC ELECTRICAL CHARACTERISTICS VCC from +5V to +2V, GND = 0V, Tamb = 25°C (unless otherwise specified)
Symbol RIN 1,2 Input Resistance 1) Gain value for Gain TS486/TS487-1 G Gain value for Gain TS486/TS487-2 Gain value for Gain TS486/TS487-4
1. See figure 30 to establish the value of Cin vs. -3dB cut off frequency.
Parameter
Min.
Typ. 20 0dB 6dB 12dB
Max.
Unit k
dB
APPLICATION COMPONENTS INFORMATION
Components RIN1,2 CIN1,2 RFEED1,2 CS CB COUT1,2 Functional Description Inverting input resistor which sets the closed loop gain in conjunction with RFEED. This resistor also forms a high pass filter with CIN (fc = 1 / (2 x Pi x RIN x CIN)) . Not needed in fixed gain versions. Input coupling capacitor which blocks the DC voltage at the amplifier's input terminal. Feedback resistor which sets the closed loop gain in conjunction with RIN. AV= Closed Loop Gain= -RFEED/RIN. Not needed in fixed gain versions. Supply Bypass capacitor which provides power supply filtering. Bypass capacitor which provides half supply filtering. Output coupling capacitor which blocks the DC voltage at the load input terminal. This capacitor also forms a high pass filter with RL (fc = 1 / (2 x Pi x RL x COUT )).
TYPICAL APPLICATION SCHEMATICS
3/31
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