NTE7052 Integrated Circuit Mono BTL Audio Amplifier, 3W Description: The NTE7052 is a mono output amplifier in a 9–Lead SIP type package designed for use in battery– fed portable radios and mains–fed equipment such as televisions. This device needs no external components because it makes use of the Bridge–Tied–Load (BTL) principle. Consequently it has, at the same supply voltage, a higher output power compared to a conventional Single Ended output stages. The NTE7052 is capable of delivering an output power of 1W into a loudspeaker load of 8Ω with a 6V supply or 3W into a 16Ω loudspeaker at 11V without the need of an external heatsink. The gain is internally fixed at 40dB. Special attention is given to ON/OFF switch click suppression, and it has a good overall stability. The load can be short circuited at all input conditions. Features: D No External Components D No ON/OFF Switch Clicks D Good Overall Stability D Low Power Consumption D Short–Circuit Protection D ESD Protected on All Pins Absolute Maximum Ratings: Supply Voltage, VP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V Peak Repetitive Output Current, IORM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1A Peak Non–Repetitive Output Current, IOSM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5A Total Power Dissipation (TC < +60°C), Ptot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9W Short Circuit Time (Note 1), TSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Hr Junction Temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +150°C Thermal Resistance, Junction–to–Case, RthJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10K/W Thermal Resistance, Junction–to–Ambient, RthJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55K/W Note 1. The load can be short–circuited at all input conditions. Electrical Characteristics: (TA = +25°C, VP = 11V, f = 1kHz, RL = 16Ω unless otherwise specified) Parameter Operating Supply Voltage Repetitive Peak Output Current Symbol Test Conditions Min Typ Max Unit VP 3 11 18 V IORM – – 600 mA – 5 7 mA 2.5 3.0 – W – 0.25 1.0 % 39.0 40.5 42.0 dB Total Quiescent Current IP RL = ∞, Note 2 Output Power PO THD = 10% Total Harmonic Distortion THD Voltage Gain GV Noise Output Voltage Vno PO = 500mW Note 3 – 180 300 µV Note 4 – 60 – µV Frequency Response 20 to 20,000 Hz Ripple Rejection RR Note 5 36 50 – dB DC Output Offset Voltage ∆V RS = 5kΩ – – 200 mV Input Impedance |Zi| – 100 – kΩ II – 100 300 nA Input Bias Current Note 2. With a load connected to the outputs the quiescent current will increase, the maximum value of this increase being equal to the DC output offset voltage divided by RL. Note 3. The noise output voltage (RMS value) is measured with RS = 5kΩ unweighted (20Hs to 20kHz). Note 4. The noise output voltage (RMS value) at f = 500kHz is measured with RS = 0Ω and BW = 5kHz. With a practical load (RL = 16Ω, LL = 200µH) the noise output current is only 50nA. Note 5. The ripple rejection is measured with RS = 0Ω and f = 100Hz to 10kHz. The ripple voltage (200mV) is applied to the positive supply rail. Pin Connection Diagram (Front View) 9 N.C. 8 Output (–) 7 Power GND 6 Output (+) 5 N.C. 4 Signal GND 3 Input (+) 2 VP 1 N.C. .890 (22.6) .728 (18.5) .067 (1.72) .591 (15.0) .150 (3.8) .328 .229 (8.33) (5.82) .059 (1.5) 1 9 .250 (6.35) .281 (7.14) .100 (2.54)