TECHNICAL DATA KKA7050 LOW VOLTAGE MONO/STEREO POWER AMPLIFIER GENERAL DESCRIPTION The KKA7050 is a low voltage audio amplifier for small radios with headphones (such as watch, pen and pocket radios) in mono (bridge-tied load) or stereo applications. Features • Limited to battery supply application only (typ. 3 and 4 V) • Operates with supply voltage down to 1,6 V • No external components required • Very low quiescent current • Fixed integrated gain of 26 dB, floating differential input • Flexibility in use - mono BTL as well as stereo • Small dimension of encapsulation (see package design example) QUICK REFERENCE DATA Supply voltage range Vp 1,6 to 6,0 V Total quiescent current (at Vp = 3 V) ltot typ. 3,2 mA Bridge tied load application (BTL) Output power at R) = 32 Q Vp=3V;dtat=10% PO typ. 140 mW D.C. output offset voltage between the outputs lAVI max. 70 mV Vno(rms) typ. 140 mV dtot = 10%; Vp = 3V PO typ. 35 mW dtot = 10%; Vp= 4,5V PO typ. 75 mW Channel separation at Rs = 0 Ω; f = 1 kHz Noise output voltage (r.m.s. value) K typ. 40 dB at f = 1 kHz; Rs = 5 kΩ Vno(rms) typ. 100 mV Noise output voltage (r.m.s. value) at f = 1 kHz; Rg = 5 kfit Stereo application Output power at R( = 32 Ω PACKAGE OUTLINE 8-lead DIL; plastic (SOT97); SOT97-1; 1 KKA7050 CHARACTERISTICS Vp = 3 V; f = 1 kHz; RL = 32 0., Tamb = 25 °C; unless otherwise specified PARAMETER SYMBOL MIN. TYP. MAX. UNIT Supply voltage Vp 1,6 - 6,0 V Total quiescent current Itot - 3,2 4 mA PO - 140 - mW Supply Bridge-tied load application (BTL); see Fig.4 Output power; note 1 Vp = 3,0 V; diet = 10% Vp = 4,5 V; diet = 10% (RL = 64 Q) PO - 150 - mW Voltage gain GV - 32 - dB RS = 5 kQ.-, f = 1 kHz Vno(rms) - 140 - mV RS = 0 Q; f = 500 kHz; B =5 kHz Vno(rms) - tbf - mV D.C. output offset voltage (at Rs = 5 kΩ) Input impedance (at Rs =∞) Input bias current l∆VI IZiI 1 - 70 - Ii - 40 - MΩ nA PO - 35 - mW Noise output voltage (r.m.s. value) mV Stereo application; Output power; note 1 Vp=3,OV;dtot=10% Vp=4,5V;dtot=10% PO - 75 - mW Voltage gain GV 24.5 26 27.5 dB RS = 5 kΩ; f = 1 kHz Vno(rms) - 100 - mV RS = 0 Ω; f = 500 kHz; B =5 kHz Channel separation Vno(rms) - tbf - mV Noise output voltage (r.m.s. value) RS = 0 Ω; f = 1 kHz K 30 40 - dB Input impedance (at Rs = ∞) Input bias current IZjl 2 - - Ii - 20 - MΩ nA Note 1. Output power is measured directly at the output pins of the IC. It is shown as a function of the supply voltage in Fig.2 (BTL application) and Fig.3 (stereo application). Аpplication diagram (BTL) Аpplication diagram (stereo) 2 KKA7050 N SUFFIX PLASTIC DIP (MS – 001BA) A Dimension, mm 5 8 B 1 4 MIN MAX A 8.51 10.16 B 6.1 7.11 5.33 C L F Symbol C D 0.36 0.56 F 1.14 1.78 -T- SEATING PLANE N G K D 0.25 (0.010) M M H J T NOTES: 1. Dimensions “A”, “B” do not include mold flash or protrusions. Maximum mold flash or protrusions 0.25 mm (0.010) per side. G 2.54 H 7.62 J 0° 10° K 2.92 3.81 L 7.62 8.26 M 0.2 0.36 N 0.38 3