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SSGSC34119
Elektronische Bauelemente Low Power Audio Amplifier
DESCRIPTION
The SGSC34119 is a low power audio amplifier integrated circuit intended (primarily) for telephone applications, such as in speakerphones. It provides differential speaker outputs to maximize output swing at low supply voltages (2.0V minimum). Coupling capacitors to the speaker are not required. Open loop gain is 80 dB, and the closed loop gain is set with two external resistors. A Chip Disable pin permits powering down and/or muting the input signal.
FEATURES
z z z z z z z z z
Wide Operating Supply Voltage Range (2.0V to 16V), allows Telephone Line Powered Applications Low Quiescent Supply Current (2.7mA Typ) for Battery Powered Applications Chip Disable Input to Power Down the IC Low Power-Down Quiescent Current (65µA Typ) Drives a Wide Range of Speaker Loads (8.0Ω and Up) Output Power Exceeds 250 mW with 32Ω Speaker Low Total Harmonic Distortion (0.5% Typ) Gain Adjustable from <0 dB to >46 dB for Voice Band Requires Few External Components
PACKAGE DIMENSIONS
REF. A B C D E F
Millimeter Min. 5.80 4.80 3.80 0 0.40 0.19 Max. 6.20 5.00 4.00 8 0.90 0.25
REF. M H L J K G
Millimeter Min. Max. 0.10 0.25 0.35 0.49 1.35 1.75 0.375 REF. 45 1.27 TYP.
BLOCK DIAGRAM AND SIMPLIFIED APPLICATION & PIN CONFIGURATION
01-June-2002 Rev. A
Page 1 of 9
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SSGSC34119
Elektronische Bauelemente Low Power Audio Amplifier
MAXIMUM RATINGS
Parameter
Supply Voltage Maximum Output Current at VO1 and VO2 Maximum Voltage @ Vin, FC1, FC2, CD Applied Output Voltage to VO1, VO2 when disabled Junction Temperature Note: ESD data available upon request.
Value
-1.0 to +18 ±250 -1.0, VCC+ 1.0 -1.0, VCC+ 1.0 -55, +140
Units
VDC mA VDC °C
RECOMMENDED OPERATING CONDITIONS
Characteristics
Supply Voltage Voltage @ CD (Pin 1) Load Impedance Peak Load Current Differential Gain (5.0 kHz Bandwidth) Ambient Temperature
Symbol
VCC VCD RL IL AVD TA
Min
+2.0 0 8.0 0 -20
Max
+16 VCC ±200 46 +70
Units
VDC Ω mA dB °C
ELECTRICAL CHARACTERISTICS (TA=25 °C unless otherwise specified)
Parameter
AC Input Resistance Open Loop Gain Close Loop Gain Gain Bandwidth Product Output Power
Symbol
Test Conditions
@ Vin Amplifier #1, f < 100Hz Amplifier #2, VCC = 6V, f = kHz, RL = 32Ω VCC = 3V, RL= 16Ω, THD ≦ 10 % VCC = 6V, RL= 32Ω, THD ≦ 10 % VCC = 12V, RL= 100Ω, THD ≦10 % VCC = 6V, RL= 32Ω, Pout = 125 mW VCC ≧ 3V, RL= 8Ω, Pout = 20 mW VCC ≧ 12V, RL= 32Ω, Pout = 200 mW
Min
80 -0.35 55 250 400 50 -
Typ
> 30 0 1.5 0.5 0.5 0.6 12 52 >70
Max
+0.35 1.0 -
Units
MΩ dB dB MHz
Amplifiers (AC Characteristics) Ri AVOL1 AV2 GBW Pout3 Pout6 Pout12 THD
mW
Total Harmonic Distortion (f = 1 kHz)
%
Power Supply Rejection (VCC = 6V, ΔVCC = 3V) Differential Muting
C1 = ∞ , C2 = 0.0μF
PSRR GMT
C1 = 0.1 μF, C2 = 0, f = 1 kHz C1 = 1.0 μF, C2 = 5.0 μf , f = 1 kHz VCC = 6V, 1 kHz ≦ f ≦ 20 kHz, CD = 2V
dB
dB
Output DC Level
Output Level Output DC Offset Voltage (VO1 – VO2) Input Bias Current Equivalent Resistance
.