Ordering number : ENA2033A LA4537MC Monolithic Linear IC Power Amplifier for 1.5V Headphone Stereos http://onsemi.com Features • Low current drain • 16Ω load drive capability • Excellent reduced voltage characteristics • Excellent power supply ripple rejection • Minimum number of external parts required (no input capacitor, feedback capacitor required) • Less harmonic interference in radio band • On-chip power switch function, muting function Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Allowable power dissipation Symbol VCC max Conditions Ratings Quiescent Pd max Unit 4.5 V 290 mW Operating temperature Topr −20 to +75 °C Storage temperature Tstg −40 to +125 °C 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. Operating Conditions at Ta = 25°C Parameter Symbol Recommended supply voltage VCC Operating voltage range Recommended load resistance Conditions Ratings Unit 1.5 V VCC op 0.9 to 4.0 V RL 16 to 32 Ω Semiconductor Components Industries, LLC, 2013 May, 2013 12313NKPC CAV 20120301-S00005/32112SY No.A2033-1/8 LA4537MC Electrical Characteristics at Ta = 25°C, RL = 16Ω, Rg = 600Ω, See specified Test Circuit. Ratings Parameter Symbol Conditions Unit min Quiescent current typ max ICCO1 VCC = 1.2V, quiescent 3.5 6.0 mA ICCO2 VCC = 2.5V, pin 10 → GND 1.4 2.5 mA ICCO3 VCC = 2.5V, pin 1 → GND 1.0 μA 31.5 dB 1.0 dB 1.5 % Voltage gain VG VCC = 1.2V, f = 1kHz, VO = −20dBm Voltage gain difference ΔVG VCC = 1.2V, f = 1kHz, VO = −20dBm Total harmonic distortion THD VCC = 1.2V, f = 1kHz, PO = 0.5mW Output power PO VCC = 1.5V, f = 1kHz, THD = 10% 5 8 mW Crosstalk CT VCC = 1.2V, f = 100Hz, Rg = 1kΩ, 40 45 dB SVRR VO = −20dB VCC = 1.0V, f = 100Hz, Rg = 1kΩ, 40 46 dB Ripple rejection 28.5 30.0 0.5 VR = −30dBm, BPF = 100Hz VCC = 2.5V, Rg = 1kΩ, BPF = 20Hz to 20kHz 55 80 μV I1 (on) VCC = 0.85V, V5 ≥ 0.5V 0.1 1.0 μA Power off voltage sensitivity V1 (off) VCC = 0.85V, V5 ≤ 0.1V Muting off current sensitivity I10 (off) VCC = 0.85V, V5 ≥ 0.5V 1.0 μA Muting on voltage sensitivity V10 (on) VCC = 0.85V, V5 ≤ 0.1V Output noise voltage VNO Power on current sensitivity 0.5 0.6 0.1 0.5 0.6 V V Note) The quiescent current is respresented by the current flowing into pin 6. The respective maximum currents flowing into pin 1 and pin 10 are calculated by (pin voltage -0.5) / 16 [V/kΩ] and the total current increases by these current values. Package Dimensions unit : mm (typ) 3426 5.0 5 0.35 1.75 MAX 0.15 1.5 1.0 0.175 1 0.835 0.37 6.4 6 4.4 10 SANYO : SOIC10 No.A2033-2/8 LA4537MC Block Diagram Test Circuit I1 I10 2 P/SW 3 1 LA4537MC 1 V1 1 1 P/SW MT/SW 10 MT/SW 4 4 2 2 IN 1 3 PRE GND 4 IN 2 5 REF Rg OUT 1 9 POWER GND 8 OUT 2 7 2 V10 3 + + + SG VR RL 1 2 Rg RL VCC + DC VCC 6 RIPPLE A ICC Sample Application Circuit 1 (Standard) LA4537MC ON P/SW OFF VR SG 2 MT/SW 10 OFF MT/SW ON VR SG 1 1 P/SW 2 IN 1 3 PRE GND 4 IN 2 OUT 1 9 POWER GND 8 OUT 2 7 + + RL + + 5 REF RL + VCC VCC 6 No.A2033-3/8 LA4537MC Sample Application Circuit 2 (Output capacitor shared) LA4537MC ON P/SW OFF 1 P/SW MT/SW 10 OFF MT/SW ON RL VR VR SG 1 SG 2 2 IN 1 3 PRE GND 4 IN 2 OUT 1 9 POWER GND 8 OUT 2 7 + RL + + 5 REF + VCC VCC 6 No.A2033-4/8 3 2 1 7 5 3 2 0.1 0.1 2 3 5 7 2 1 3 5 7 Output power, PO -- mW PO -- VCC RL=16Ω fin=1kHz THD -- PO 100 7 5 3 2 z f in 10 7 5 3 2 1 7 5 3 2 8 8 6 THD=1% 4 2 3 5 7 2 1 3 5 7 Output power, PO -- mW 10 PO -- VCC RL=32Ω fin=1kHz THD=10% 10 fin= 10k Hz =1 kH z VCC=1.2V RL=32Ω 0.1 0.1 10 Output power, PO -- mW 12 Output power, PO -- mW fin Hz 10 7 5 Total harmonic distortion, THD -- % 3 2 =1 kH z fin= 10k Hz VCC=1.2V RL=16Ω f in = 100 H THD -- PO 100 7 5 f i n= 100 Total harmonic distortion, THD -- % LA4537MC THD=10% 6 THD=1% 4 2 2 0 0.5 1 1.5 2 2.5 3 0 0.5 4 3.5 1 1.5 Supply voltage, VCC -- V THD -- fin 10 2 VCC=0.9V 1 VCC=1.2V 7 5 3 2 0.1 0.01 200 Power dissipation, Pd -- mW Total harmonic distortion, THD -- % 3 2 3 5 7 0.1 2 3 5 7 1 2 3 5 7 10 2 3 Frequency, fin -- kHz V =3 C VC 5 =1. V CC 50 1 4 3.5 4 0.8 0.6 0.4 100 150 100 3.5 V 0 1 1.5 2 2.5 3 Supply voltage, VCC -- V Pd -- PO fin=1kHz RL=16Ω 3 PO=0.5mW fin=1kHz RL=16Ω 0.2 0.5 5 7100 Supply current, ICCOP -- mA Total harmonic distortion, THD -- % 5 2.5 THD -- VCC 1.2 PO=0.5mW RL=16Ω 7 2 Supply voltage, VCC -- V ICCOP -- PO VCC=3V fin=1kHz RL=16Ω 80 60 40 20 0 1 2 3 5 7 10 2 3 Output power, PO -- mW/ch 5 7 100 1 2 3 5 7 10 2 3 Output power, PO -- mW/ch 5 7 100 No.A2033-5/8 LA4537MC Vg -- fin Voltage gain, Vg -- dB 35 30 25 20 0.01 Output noise voltage, Vno -- µVrms 70 2 3 5 7 0.1 2 3 5 7 1 2 3 5 7 10 2 3 Frequency, fin -- kHz 60 55 1 1.5 2 2.5 3 3.5 27.5 CT -- fin 2 2.5 3 4 3.5 90 80 70 60 50 2 3 5 7 1 2 3 5 7 10 2 3 5 7 100 Signal source resistance, Rg -- kΩ CT -- VCC VO=-20dBm fin=100Hz Rg=1kΩ RL=16Ω 50 40 1.5 Vno -- Rg 55 VCC=1.2V VO=-20dBm Rg=1kΩ RL=16Ω 50 1 VCC=2.5V RL=16Ω 40 0.1 4 Crosstalk, CT -- dB Crosstalk, CT -- dB 30 Supply voltage, VCC -- V Supply voltage, VCC -- V 60 32.5 100 65 50 0.5 VO=-20dBm fin=1kHz RL=16Ω Cout=220µF 25 0.5 5 7 100 Vno -- VCC Rg=1kΩ RL=16Ω Vg -- VCC 35 VCC=1.2V VO=-20dBm RL=16Ω Cout=220µF Output noise voltage, Vno -- µVrms Voltage gain, Vg -- dB 40 45 40 30 0.01 5 7 0.1 2 3 5 7 1 2 3 5 7 10 2 3 Frequency, fin -- kHz 35 0.5 5 7100 2 2.5 3 4 3.5 VCC=1.2V RL=16Ω 7 5 3 On-time -- msec 60 1.5 AMP On-time -- Cref 1000 VCC=1.2V VO=-20dBm f=100Hz Rg=1kΩ RL=16Ω 1 Supply voltage, VCC -- V CT -- Cref 70 Crosstalk, CT -- dB 2 3 50 40 2 100 7 5 3 30 2 20 10 1 2 3 5 7 10 2 Capacitance, Cref -- µF 3 5 7 100 1 2 3 5 7 10 2 Capacitance, Cref -- µF 3 5 7 100 No.A2033-6/8 LA4537MC SVRR -- Cref 70 VCC=1.0V VR=-30dBm Rg=1kΩ RL=16Ω 60 55 SVRR -- dB SVRR -- dB 60 SVRR -- f 65 VCC=1.0V VR=-30dBm f=100Hz Rg=1kΩ RL=16Ω 50 50 45 40 40 30 2 1 55 5 7 2 10 3 5 Capacitance, Cref -- µF 7 SVRR -- VCC VR=-30dBm f=100Hz Rg=1kΩ RL=16Ω 45 40 2 3 5 7 0.1 2 3 5 7 1 2 3 5 7 10 2 3 5 7 100 Frequency, f -- kHz VMT -- fin --85 50 SVRR -- dB 35 0.01 100 Mutting level, VMT -- dBm 60 3 VCC=0.9V Vin=-10dBm RL=16Ω V1=0.85V V10=0.3V --90 Same characteristics during power-off mode --95 --100 35 30 0.5 1 1.5 2 2.5 3 3.5 --105 0.01 4 Supply voltage, VCC -- V --90 VMT -- VCC Vin=-10dBm fin=100Hz RL=16Ω V1=0.85V V10=0.3V 9 Same characteristics during power-off mode Quiescent current drain, ICCO -- mA Mutting level, VMT -- dBm --85 --95 --100 --105 0.5 5 7 0.1 5 7 1 2 3 5 7 10 2 3 5 7 100 ICCO -- VCC V1=0.85V no load no signal 8 2 3 Frequency, fin -- kHz 7 te Mu 6 off 5 4 3 n Mute o 2 1 0 1 1.5 2 2.5 3 3.5 4 Supply voltage, VCC -- V 1 2 3 V1=0.85V V10=0.85V 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 Supply voltage, VCC -- V Pin voltage -- VCC REF (5pin) Pin voltage -- V 0.8 OUT (7pin, 9pin) 0.6 0.4 0.2 0 0.5 1 1.5 2 2.5 3 3.5 4 Supply voltage, VCC -- V No.A2033-7/8 LA4537MC ON Semiconductor and the ON logo are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). 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