LA74309FA-BH

Ordering number : ENA2050 LA74309FA Monolithic Linear IC Microphone Amplifier for Digital Still Camera http://onsemi.com Overview LA74309FA is a microphone amplifier for digital still cameras that have mono audio recording. The analog signal processing for the recording of the digital still camera or other equipment can be easily composed, because the MIC power supply and the ALC circuit are built-in. Moreover, the regulator is built-in, therefore external regulator IC is unnecessary. Features • Microphone (MIC) amplifier (+20dB) • MIC power supply with built-in pull-up resistor • Automatic level control (ALC) amplifier (output level=-1dBV≈2.5Vpp) • 3rd order LPF (fc=11kHz) • 3V regulator (At the time of VCC=3.3V, internal supply voltage: VCCA≈3.0V) • Standby control (ICC≤10μA) Specifications Absolute Maximum Ratings at Ta=25°C Parameter Maximum power supply voltage Allowable power dissipation Symbol Conditions VCC max Pd max Ta≤85°C Ratings Unit 4.0 V 50 mW Operating temperature Topr -20 to +85 °C Storage temperature Tstg -55 to +150 °C Caution 1) Absolute maximum ratings represent the value which cannot be exceeded for any length of time. Caution 2) Even when the device is used within the range of absolute maximum ratings, as a result of continuous usage under high temperature, high current, high voltage, or drastic temperature change, the reliability of the IC may be degraded. Please contact us for the further details. Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. Semiconductor Components Industries, LLC, 2013 May, 2013 112 SY 20120301-S00001 No.A2050-1/5 LA74309FA Operating Conditions at Ta = 25°C Parameter Symbol Recommended power supply voltage Conditions Ratings VCC Operating voltage range of VCC VCCop Unit 3.3 V 3.1 to 3.6 V Electrical Characteristics at Ta=25°C, VCC=3.3V, f=1kHz Ratings Parameter Symbol Conditions Unit min typ max Circuit current VCC no signal current dissipation ICC VCC standby current dissipation REC output system ICCS VCC=3.3V, Standby mode (Pin3=0V) Standard REC output level VOR VIN=-49dBV at ALC IN pin (=Standard level) Standard REC output distortion HDR ALC IN, VIN=-49dBV, THD from to 5th harmonic ALC characteristics ALM ALC IN, VIN=-17dBV (=Standard level +32dB) ALMD ALC IN, VIN=-17dBV (=Standard level +32dB), THD from to 5th harmonic ALC THD VINRMX ALC IN maximum input level VCC=3.3V, Active mode (Pin3=3V) VNOR No signal at MIC IN pin, with JIS-A Filter REC output frequency FEQR1 ALC IN, VIN=-17dBV, The output level ratio at f=11kHz/1kHz REC output frequency -10 -3 5.3 6.7 mA 10 μA -9 -8 dBV 0.1 0.2 -1 0.25 REC output THD≤3% REC output noise level characteristics 1 3.9 -5 % dBV 1 % -10 dBV -53 -47 dBV -3 -1 dB FEQR2 ALC IN, VIN=-17dBV, The output level ratio at f=22kHz/1kHz -18 -12 dB FEQR3 ALC IN, VIN=-17dBV, The output level ratio at f=100kHz/1kHz -55 -45 dB MIC voltage gain VGMIC VIN=-39dBV at MIC IN pin 20 21 dB MIC output THD HDMIC MIC IN, VIN=-39dBV, THD from to 5th harmonic 0.03 0.1 % -30 dBV 1.9 V characteristics 2 REC output frequency characteristics 3 MIC output system MIC IN maximum input level VINMMX MIC VCC output DC voltage VMIC 19 MIC output THD=3% With 6.2kΩ load 1.5 1.7 Package Dimensions unit : mm (typ) 3428 3.0 0.55 4.9 3.0 10 1 2 0.5 0.16 0.1 1.03 0.25 SANYO : Micro10 No.A2050-2/5 LA74309FA Pin assinment GND 1 10 VCC ALC IN 2 9 REC OUT STANDBY L 3 8 ALC DET MIC OUT 4 7 INT MIC VCC MIC IN 5 6 VREF LA74309FA Pin Description Pin No. Pin Description 1 GND 2 ALC input 3 STANDBY CTL 4 MIC output 5 MIC input 6 Ripple removal for VREF 7 Internal MIC power supply 8 ALC DET 9 REC output 10 VCC Equivalent Circuit Block Diagram & Application Circuit REC OUT VCC3.3V 10 9 8 7 6 VREF REG MIC VCC CHARGE LPF VCCA 3.0V DET + ALC 1 2 GND 3 4 5 MIC IN MIC STANDBY CTL No.A2050-3/5 LA74309FA Pin Functions PIN No. Pin Name DC voltage 1 GND 0V 2 ALC IN AC voltage Functions Equivalent Circuit Ground Output level=-49dBV VCCA (=3.0V) (At MIC IN=-69dBV) Maximum input level =-10dBV 2 VREFL 3 STANDBY L Standby control pin 3 Over 2V: Standby OFF 4 MIC OUT 1.60V Output level=-49dBV MIC output pin VCCA (=3.0V) (At MIC IN=-69dBV) 4 VREFL 5 MIC IN Standard input level MIC input pin VCCA (=3.0V) =-69dBV Maximum input level 5 =-30dBV VREFL 6 VREF 2.30V MIC VCC and ripple rejection pin VCCA (=3.0V) for VREFL 6 7 INT MIC 2.30V MIC power supply pin VCCA (=3.0V) VCC 7 Continued on next page. No.A2050-4/5 LA74309FA Continued from preceding page. PIN No. Pin Name 8 ALC DET DC voltage AC voltage Functions Equivalent Circuit ALC detector pin VCCA (=3.0V) 8 9 REC OUT 1.60V Output level=-9dBV REC output pin VCC (=3.3V) (At MIC IN=-69dBV) 9 VREFL 10 VCC 3.3V Power supply pin ON Semiconductor and the ON logo are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent-Marking.pdf. SCILLC reserves the right to make changes without further notice to any products herein. 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