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TEA7532FP bảng dữ liệu(PDF) 3 Page - STMicroelectronics |
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TEA7532FP bảng dữ liệu(HTML) 3 Page - STMicroelectronics |
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3 / 16 page  FUNCTIONAL DESCRIPTION TEA7532 performs the following functions : The circuit amplifies the incoming signal and feeds it to the loudspeaker. PG0 and PG1 inputs are used to set the loudspeaker gain in a range of 32dB to 14dB in 6dB steps. The TEA7532 inputs (PG0, PG1, ON/OFF) permit the loudspeaker to be cut-off thus ensuring privacy of communication. - The antilarsen (antiacoustic feedback) system is incorporated. - The maximum power available on a 50 Ω imped- ance loudspeaker is 25mW at 3 volts and 100mW at 5V. Limit values for external components : R3 min = 5 k Ω (R3 adjust VLS), R7 max = 390 kΩ, R6 min = R7/35 R max between pin 5 and 6 = 10k Ω +C min = 10nF. ELECTRICAL CHARACTERISTICS (Tamb =25 oC, ILS = 30mA unless otherwise specified) Symbol Parameter Test Conditions Min. Typ. Max. Unit VLS1 VLS Supply ILS = 2mA (fig. 7) ILS = 30mA (fig. 7) 2.6 3.0 3.15 3.4 3.4 V V VLSM VLS Maximum Ipin 1 =50 µA (fig. 7 ; So = closed) 5.5 V VADJ Voltage Pin 1 ILS = 2mA to 30mA (fig. 7) 1.1 1.25 1.4 V G Loudspeaker Amplifier Gain = V10 − V12 V9 ON/OFF PG0 PG1 G000 G001 G010 G011 G100 GND GND GND GND VLS GND GND VLS VLS X GND VLS GND VLS X 12 18 24 30 14 20 26 32 –30 16 22 28 34 –20 dB dB dB dB dB THD Distortion f = 300Hz to 2kHz, V10 –V12 = 0.8VRMS, G = G011, (fig. 8) 2% G2 [V(10) – V(12)]/V2 PG0 =PG1 =VLS,V8 = 0.8V (fig. 8) 30 32 34 dB ZMICIN Microphone Input Symetrical at (pins 5-6) Asymetrical at (pin 6) fig. 9 4.5 k Ω ZINPIN Earphone Input (fig. 9) 2.2 2.8 3.4 k Ω ZIN2 Antilarsen Adjustment Input 1 1.2 1.45 k Ω VOFFS Ouput Offset [V(10) –V(12)] G011 ; (fig. 8) – 50 50 mV ION/OFF IPG0 IPG1 Input Current ON State VPG1 = 0V ; (fig. 8) – 10 –10 –10 –5 –5 –5 µA µA µA ION/OFF IPG0 IPG1 Input Current OFF State VPG1 =VLS ; (fig. 8) 1 1 1 µA µA µA VIL ON/OFF VIL PG0 VIL PG1 Input Voltage ON State 0.45 0.45 0.45 V V V VIH ON/OFF VIH PG0 VIH PG1 Input Voltage OFF State 1.5 1.5 1.5 V V V GMIC Microphone Gain = V(7)/[V(5) –V(6)] VMIC = 10mVRMS, f = 2kHz (fig. 10) 22.5 23.5 24.5 dB Vg Voltage Pin 8 0.48 0.67 0.75 V GATT Loudspeaker Attenuated Gain = [V(10) –V(12)]/V(9) G011 ; V8 = 0.6V ; (fig. 10) G011 ; V8 = 0.4V ; (fig. 10) 20 –30 30 –20 dB dB TEA7532 3/16 |
Số phần tương tự - TEA7532FP |
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Mô tả tương tự - TEA7532FP |
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