Elektronische Bauelemente Power Audio Amplifier SGSC34119 power a

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Elektronische Bauelemente Power Audio Amplifier SGSC34119 power a

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SSGSC34119
Elektronische Bauelemente Power Audio Amplifier
SGSC34119 power audio amplifier integrated circuit intended (primarily) telephone applications, such speakerphones. provides differential speaker outputs maximize output swing supply voltages (2.0V minimum). Coupling capacitors speaker required. Open loop gain closed loop gain with external resistors. Chip Disable permits powering down and/or muting input signal.
FEATURES
Wide Operating Supply Voltage Range (2.0V 16V), allows Telephone Line Powered Applications Quiescent Supply Current (2.7mA Typ) Battery Powered Applications Chip Disable Input Power Down Power-Down Quiescent Current (65µA Typ) Drives Wide Range Speaker Loads (8.0 Output Power Exceeds with Speaker Total Harmonic Distortion (0.5% Typ) Gain Adjustable from Voice Band Requires External Components
PACKAGE DIMENSIONS
REF.
Millimeter Min. 5.80 4.80 3.80 0.40 0.19 Max. 6.20 5.00 4.00 0.90 0.25
REF.
Millimeter Min. Max. 0.10 0.25 0.35 0.49 1.35 1.75 0.375 REF. 1.27 TYP.
BLOCK DIAGRAM SIMPLIFIED APPLICATION CONFIGURATION
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SSGSC34119
Elektronische Bauelemente Power Audio Amplifier
MAXIMUM RATINGS
Parameter
Supply Voltage Maximum Output Current Maximum Voltage Vin, FC1, FC2, Applied Output Voltage VO1, when disabled Junction Temperature Note: data available upon request.
Value
-1.0 ±250 -1.0, VCC+ -1.0, VCC+ -55, +140
Units
RECOMMENDED OPERATING CONDITIONS
Characteristics
Supply Voltage Voltage (Pin Load Impedance Peak Load Current Differential Gain (5.0 Bandwidth) Ambient Temperature
Symbol
+2.0
±200
Units
ELECTRICAL CHARACTERISTICS (TA=25 unless otherwise specified)
Parameter
Input Resistance Open Loop Gain Close Loop Gain Gain Bandwidth Product Output Power
Symbol
Test Conditions
Amplifier 100Hz Amplifier kHz, 12V, 100, Pout
-0.35
+0.35
Units
Amplifiers Characteristics) AVOL1 Pout3 Pout6 Pout12
Total Harmonic Distortion kHz)
Pout 12V, Pout
Power Supply Rejection (VCC Differential Muting
0.0F
PSRR
kHz,
Output Level
Output Level Output Offset Voltage (VO1 VO2) Input Bias Current Equivalent Resistance
Amplifiers Characteristics) VO(3) VO1, VO2, (Rf=75k) VO(6) VO(12) High Iout -75mA, 2VVCC16V Iout 75mA, 2VVCC16V RFC1 RFC2
75k, Vin(VCC=6V)
(VCC (VCC
1.15 2.65 5.65 VCC-1 0.16 -100
1.25 -200
01-June-2002 Rev.
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SSGSC34119
Elektronische Bauelemente Power Audio Amplifier
ELECTRICAL CHARACTERISTICS (Cont'd)
Parameter
Input Voltage Input Resistance Power Supply Current
Symbol
Test Conditions Chip Disable (Pin1)
High
Units
ICC3 ICC16 ICCD
Power Supply
0.8V 16V, 0.8V
2.0V Note: Currents into positive; currents negative.
FUNCTION Symbol
Description
Chip Disable-Digital input. Logic (<0.8V) sets normal operation. Logic (2V) sets power down mode. Input impedance nominally 90k. capacitor this increases power supply rejection, affects turn-on time. This left open capacitor sufficient. Analog ground amplifiers. 1.0F capacitor this (with 5.0F capacitor provides (typically) 52dB power supply rejection. Turn-on time circuit affected capacitor this pin. This used alternate input. Amplifier input. This input capacitor resistor frequency roll-off input impedance. feedback resistor connected this VO1. Amplifier Output level (VCC 0.7)/2. supply voltage (+2V +16V) applied this pin. Ground entire circuit. Amplifier Output This signal equal amplitude, 180° out-of-phase with that VO1. level (VCC 0.7)/2.
TYPICAL TEMPERATURE PERFORMANCE (-20°C 70°C)
Function
Input Bias Current (@Vin) Total Harmonic Distortion (VCC Pout kHz) Power Supply Current (VCC (VCC
Typical Change
+0.003 -0.25 -0.03
Units
pA/°C %/°C A/°C
Design Guidelines
General SGSC34119 power audio amplifier capable voltage operation (VCC minimum) such that encountered line-powered speakerphones. circuit provides differential output (VO1-VO2) speaker maximize available voltage swing voltages. differential gain external resistors. Pins allow controlling amount power supply noise rejection, well providing alternate inputs amplifiers. permits powering down muting purposes conserve power. Amplifiers Referring block diagram, internal configuration consists identical operational amplifiers. Amplifier open loop gain Hz), closed loop gain external resistor amplifier unity gain stable, unity gain frequency approximately MHz. order adequately cover telephone voice band (300 3400 Hz), maximum closed loop gain recommended. Amplifier internally gain -1.0(0dB).
01-June-2002 Rev. Page
SSGSC34119
Elektronische Bauelemente Power Audio Amplifier
outputs both amplifiers capable sourcing sinking peak current outputs typically swing within above ground, with below VCC, maximum current. Figures curves. output offset voltage (VO1-VO2) primarily function feedback resistor (Rf), secondarily amplifiers' input offset voltages. input offset voltage amplifiers will generally similar particular therefore nearly cancel each other outputs. Amplifier #1's bias current, however, flows (Pin through forcing shift negative amount equal IIB]. shifted positive equal amount. output offset voltage, specified Electrical Characteristics, measured with feedback resistor shown Typical Application Circuit, therefore takes into account bias current well internal offset voltages amplifiers. bias current constant with respect VCC. Power supply rejection provided capacitors Typical Application Circuit) FC2. somewhat dominant frequencies, while dominant high frequencies, shown graphs Figures required values depend conditions each application. line powered speakerphone, example, will require more filtering than circuit powered well regulated power supply. amount rejection function capacitors, equivalent impedance looking into (listed Electrical Characteristics RFC1 RFC2). addition providing filtering, also affect turn-on time circuit power-up, since capacitors must charge through internal resistors. graph Figure indicates turn-on time upon application turn-on time longer less 9.0V. Turn-off time upon removal VCC. Chip Disable Chip Disable (Pin used power down conserve power, muting, both. When Logic SGSC34119 enabled normal operation. When Logic (2.0 disabled. open, that equivalent Logic "0", although good design practice dictates that input should never left open. Input impedance nominal power supply current (when disabled) shown Figure Muting, defined change differential gain from normal operation muted operation, excess turn-off time audio output, from application signal, <2.0 turn on-time ms-15 Both times independent C1,C2, VCC. When SGSC34119 disabled, voltages change they powered from VCC. outputs, VO2, change high impedance condition, removing signal from speaker. signals from other sources applied outputs (while disabled), they must within range Ground. Power Dissipation Figures indicate device dissipation (within various combinations VCC, load power. maximum power which safely dissipated within SGSC34119 found from following equation: (140°C-TA)/JA where ambient temperature; package thermal resistance (100°C standard package.) power dissipated within SGSC34119, given application, found from following equation: (VCC ICC) (IRMS VCC) IRMS2) where obtained from Figure IRMS current load; load resistance. Figures along with Figures (distortion curves), peak working load current ±200 define operating range SGSC34119. operating range further defined terms allowable load power Figure loads 8.0, left (ascending) portion each three curves defined power level which distortion occurs. center flat portion each curve defined maximum output current capability SGSC34119. right (descending) portion each curve defined maximum internal power dissipation 25°C. higher ambient temperatures, maximum load power must reduced according above equations. Operating device beyond current junction temperature limits will degrade long term reliability. Layout Considerations Normally snubber needed output SGSC34119, unlike many other audio amplifiers. However, board layout, stray capacitances, manner which speaker wires configured, dictate otherwise. Generally, speaker wires should twisted tightly more than inches length.
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SSGSC34119
Elektronische Bauelemente Power Audio Amplifier
CHARACTERISTIC CURVE
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SSGSC34119
Elektronische Bauelemente Power Audio Amplifier
CHARACTERISTIC CURVE (cont'd)
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SSGSC34119
Elektronische Bauelemente Power Audio Amplifier
CHARACTERISTIC CURVE (cont'd)
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SSGSC34119
Elektronische Bauelemente Power Audio Amplifier
CHARACTERISTIC CURVE (cont'd)
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SSGSC34119
Elektronische Bauelemente Power Audio Amplifier
CHARACTERISTIC CURVE (cont'd)
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Elektronische Bauelemente Power Audio Amplifier SGSC34119 power a

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