|
|
Part: TS4871IST
Category:
Description: Output Rail to Rail 1W Audio Power Amplifier With Standby Mode
Company: ST Microelectronics, Inc.
Datasheet: Download TS4871IST datasheet File size : 339 kB
Request For quote: Find where to buy TS4871IST
Datasheet text preview:
TS4871
OUTPUT RAIL TO RAIL 1W AUDIO POWE R AMPLIFIER WITH STANDBY MODE
s OPERATING FROM VCC = 2.5V to 5.5V s 1W RAIL TO RAIL OUT PUT POWER @
MODE (10nA) Vcc=5V, THD=1%, f=1kHz, with 8 Load
TS4871IST - M iniS O8
PIN CONNECTIONS (Top View)
s ULTRA LOW CONSUMPTION IN STANDBY s 75dB PSRR @ 217Hz from 5V to 2.6V s ULTRA LOW POP & CLICK s ULTRA LOW DISTORTION (0.1%) s UNITY GAIN STABLE s AVAILABLE IN MiniSO8 & SO8
DESCRIPTION The TS4871 (MiniSO8 & SO8) is an Audio Power Amplifier c apable of delivering 1W of continuous RMS Ouput Power into 8 load @ 5V. This Audio Amplifier is exhibiting 0.1% distortion level (THD) from a 5V supply for a Pout = 250mW RMS. An ext ernal st andby mode c ontrol reduces the s upply current to less than 10nA. An internal thermal s hutdown protection is also provided. The TS4871 has been designed f or high quality audio applications such as m obile phones and to minimize the number of external components. The unity-gain stable amplifier c an be configured by external gain setting resistors. APPLICATIONS
Standby Bypass VIN + VIN1 2 3 4
8 7 6 5
VOUT 2 GND VCC VOUT1
TS4 871ID-TS4871IDT - S O8
Standby Bypass VIN+ VIN-
1 2 3 4
8 7 6 5
VOUT2 GND VCC VOUT1
s Mobile Phones (Cellular / Cordless) s Laptop / Notebook Computers s PDAs s Portable Audio Devices
ORDER CODE
Part Num ber TS4 871IS TS4 871ID Temperature Range -40, +85°C P ackage
Vcc Audio Input
T YPIC AL AP PLIC ATION SCHEM ATIC
Cfeed Rfeed Vcc 6 Vcc Cs
Rin Cin
4 3
VinVin+
+
Vout1 5
RL 8 Ohms Av=-1 + Vout2 8
S ·
D
2 Rstb 1
Bypass Standby Bias GND
·
Cb
TS4871
S = MiniSO Package ( MiniSO) only available i n T ape & Reel (ST) D = Small Outline Package ( SO) - also a vailable in T ape & Reel (DT)
7
January 2002
1/28
TS4871
ABSOLUTE MAXIMUM RATINGS
S ymbol VCC Vi Toper Tstg Tj R thja Su pply voltage 1) Inp ut Voltage
2)
Parameter
Value 6 GND t o VCC -40 to + 85 -65 to +1 50 150 175 215 Int ernally Limited4) 2 200 Class A 260
Unit V V °C °C °C °C/W
Op erating Free Air Temperature Range Sto rage Temperature Ma ximum Junction Temperature Thermal Resistance Junction t o Am bient 3) SO8 MiniSO8 Po wer D issipation
Pd
ESD Human Body Model ESD Ma chine Model Latch-up Lat ch-up Imm unity Lead Temperature (soldering, 10sec)
1. 2. 3. 4. All v oltages values are measured with respect t o the g round pin. The magnitude of input s ignal must n ever e xceed VCC + 0.3V / GND - 0.3V Device is protected in case of over temperature b y a thermal shutdown a ctive @ 1 50°C. Exceeding the power derating curves d uring a long p eriod, involves abnormal o perating condition.
kV V °C
OPERATING CONDITIONS
S ymbol VCC VICM VSTB RL R thja Su pply Voltage Common Mode Inp ut Voltage Range Sta ndby Voltage In put : Device ON Device OF F Load Resistor Thermal Resistance Junction t o Am bient SO8 MiniSO8
1)
Parameter
Value 2.5 to 5.5 GND to VCC - 1.5V GND VS TB 0.5 V VCC - 0.5V VSTB VCC 4 - 32 150 190
Unit V V V °C/W
1. This thermal r esistance c an be reduced with a s uitable P CB layout (see P ower Derating Curves Fig. 20)
2/28
TS4871
ELECTRICAL CHARACTERISTICS VCC = +5V, GND = 0V, Tamb = 25°C (unless otherwise specified)
Sy mbo l ICC ISTANDBY Voo Po THD + N P SRR M GM G BP Parameter Supply C urrent No input si gnal, no load Standby Current 1) No input si gnal, Vstdb y = V cc, R L = 8 Output Offse t Voltage No input si gnal, RL = 8 Output Power THD = 1% Max, f = 1k Hz, RL = 8 Total Harmonic Distortion + Noise Po = 250mW rms, Gv = 2, 20Hz < f < 20kHz, RL = 8 Power Supply Rejection Ratio2 ) f = 217Hz, RL = 8, RFeed = 22K, Vripple = 200mV rms Phase Margin at Unity Ga in RL = 8, CL = 5 00pF Gain Mar gin RL = 8, CL = 500pF Gain Bandwidth Product RL = 8 M in. Typ. 6 10 5 1 0.15 75 70 20 2 Max. 8 1000 20 Un it mA nA mV W % dB Degrees dB MH z
1. Standby mode is actived when Vstdby is tied to Vcc 2. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple )). Vripple is the surimposed s inus signal t o Vcc @ f = 217Hz
VCC = +3.3V, GND = 0V, Tamb = 25°C (unless otherwise specified)3)
Sy mbo l ICC ISTANDBY Voo Po THD + N P SRR M GM G BP Parameter Supply C urrent No input si gnal, no load Standby Current 1) No input si gnal, Vstdb y = V cc, R L = 8 Output Offse t Voltage No input si gnal, RL = 8 Output Power THD = 1% Max, f = 1k Hz, RL = 8 Total Harmonic Distortion + Noise Po = 250mW rms, Gv = 2, 20Hz < f < 20kHz, RL = 8 Power Supply Rejection Ratio2 ) f = 217Hz, RL = 8, RFeed = 22K, Vripple = 200mV rms Phase Margin at Unity Ga in RL = 8, CL = 500pF Gain Mar gin RL = 8, CL = 500pF Gain Bandwidth Product RL = 8 Min. Typ. 5.5 10 5 450 0.15 75 70 20 2 Ma x. 8 1000 20 U nit mA nA mV mW % dB Degrees dB M Hz
1. Standby mode is actived when Vstdby is tied to Vcc 2. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple )). Vripple is the surimposed s inus signal t o Vcc @ f = 217Hz 3. All electrical values are made by correlation between 2.6V and 5V measurements
3/2 8
Others parts begin by ts
TS-1 TS-2 TS-3 TS-4 TS-5 TS-6 TS-7 TS-8 TS-9 TS-10 TS-11 TS-12 TS-13 TS-14 TS-15 TS-16 TS-17 TS-18 TS-19 TS-20 TS-21 TS-22 TS-23 TS-24 TS-25 TS-26 TS-27 TS-28 TS-29 TS-30 TS-31 TS-32 TS-33 TS-34 TS-35 TS-36 TS-37 TS-38 TS-39 TS-40 TS-41 TS-42 TS-43 TS-44 TS-45 TS-46
|
|
|
