NTE1530 integrated circuit audio power amp w /alc, 450mw description: the NTE1530 is a silicon monolithic integrated circuit designed for audio power amplifier applications at a 6 volt power supply. this device contains a high gain low noise preamplifier, an automatic level control (alc) and a high gain low distortion power amplifier which makes this device the perfect audio circuit for use in cassette tape recorders. features: all functions of a preamplifier, an alc circuit and a power amplifier are encapsualated in a 14 ? lead dip package with heat sink tab. low noise, especially low pulsive noise power amplifier stage has high gain, high output power and low distortion characteristics. preamplifier stage has high gain and low distortion characteristics. wide alc range: output voltage change 1.8v typ., alc range 60db typ. low spurious radiation when driven to output clipping level. absolute maximum ratings ; (t a = +25 c unless otherwise specified) supply voltage (dc), v cc1 12v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . supply voltage (ac), v cc2 10v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . circuit current, i cc(peak) 500ma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . package dissipation (note 1), p d 2.4w . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . operating temperature range, t opt ? 20 to +75 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . storage temperature range, t stg ? 40 to +125 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . note 1. m ounted and soldered on a 50mm x 50mm copper foil of a printed circuit board (xxx3 grade). recommended conditions : (t a = +25 c unless otherwise specified) operating supply voltage 6v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . supply voltage range 3.5 to 10v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
electrical characteristics : (t a = +25 c, v cc = 6v, f = 1khz, nab, r l (pre) = 10k 2 , r l (power) = 8 2 unless otherwise specified) parameter symbol test conditions min typ max unit overall characteristics circuit current i cc no signal 10 20 33 ma circ u it c u rrent i cc no signal 10 20 33 ma output power p o v r ? max., thd = 10% 400 450 ? mw total harmonic distortion t.h.d. v r ? max, p o = 50mw ? 0.8 2.0 % output noise level nl 1 using p. head as an r g , v r ? max. ? 10 23 mv rms alc characteristics alc 1 v i = ? 70 ? 40dbm, rl? = 56 2 ? 1.8 9 db alc range alc 2 thd 3%, r l ? = 56 2 ? 60 ? db preamplifier stage open loop voltage gain a 01 r l (pre) = 10k 2 v o = 0 3v 55 65 ? ? db voltage gain a v 2 nab v o = 0.3v rms ? 30.8 ? db maximum output voltage v om r l (pre) = 10k 2 , thd = 1% ? 0.8 ? v rms input impedance r i1 20 ? ? k 2 power amplifier stage open loop voltage gain a v o2 p o = 50mw 70 81 ? db voltage gain a v2 p o = 50mw ? 46.8 ? db output noise level nl 2 v r ? min. (r g = 0) ? 0.4 2.0 mv rms input impedance r i 2 20 28 ? k 2 v cc rp head & bias filter power feedback pre ? input alc input alc output gnd pre ? output pre ? feedback bootstrap 1 2 3 4 5 erase head bias 6 power input 7 14 13 12 11 filter 10 9 8 power output tab/gnd pin connection diagram
.968 (24.6) max .763 (19.4) max .300 (7.62) .256 (6.5) .015 (0.38) .330 (8.4) .175 (4.4) .195 (4.9) .100 (2.54) .026 (0.66) .047 (1.2) .177 (4.5) .126 (3.2) 0.39 (0.99) dia
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