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| NTE7118 Integrated Circuit Audio Power Amplifier, 50W Description: The NTE7118 integrated circuit is a hi-fi power amplifier in a 9-Lead SIP type package designed for use as a building block in radio, TV, and other audio applications. The high performance of the IC meets the requirements of digital sources (e.g. Compact Disc equipment). The NTE7118 is totally protected, the two output transistors both having tthermal and SOAR protection. This device also has a mute function that can be arranged for a period after power-on with a delay time fixed by external components. The NTE7118 device is intended for symmetrical power supplies but an asymmetrical supply may also be used. Features: D High Output Power (Also with Bootstrap) D Low Offset Voltage D Good Ripple Rejection D Mute/Stand-by Facilities D Thermal Protection D Protected Against Electrostatic Discharge D No Switch-On or Switch-Off Clicks D Very Low Thermal Resistance D Safe Operating Area (SOAR) Protection D Short-Circuit Protection Absolute Maximum Ratings: Supply Voltage (Pin6 to Pin4), VP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30V Bootstrap Voltage (Pin7 to Pin4), Vbstr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70V Output Current (Repetitive Peak), IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8A Mute Voltage (Pin3 to Pin4), Vm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7V Thermal Shut-Down Protection Time (Note 1), tpr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Hour Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65 to +150C Thermal Resistance, Junction-to-Mounting Base, Rth j-mb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1K/W Note 1. Symmetrical power supply: AC and DC short-circuit protected. Asymmetrical power supply: AC short-circuit protected. Driven by a pink-noise voltage. Electrical Characteristics: (VP = 27.5V, RL = 8, f = 1kHz, TA = +25C unless otherwise specified) Parameter Supply Voltage Range (Pin6 to Pin4) Maximum Output Current (Peak Value) Operating State Input Voltage (Pin3 to Pin4) Total Quiescent Current Output Power V3-4 Itot PO RL = THD = -60dB THD = -20dB VP = 23V, THD = -60dB, RL = 8 VP = 23V, THD = -60dB, RL = 4 Total Harmonic Distortion Intermodulation Distortion Power Bandwidth Slew Rate Closed Loop Voltage Gain Open Loop Voltage Gain Input Impedance Signal-to-Noise Ratio Output Offset Voltage Input Bias Current Output Impedance Supply Voltage Ripple Rejection THD dim B dV/dt Gc Go |Zi| S/N VO II |Zo| SVRR Ripple Frequency = 100Hz, Ripply Voltage = 500mVeff, (RMS Value) Source Resistance = 2k Note 6 Note 4 PO = 50mW, Note 5 Note 3 PO = 32W PO = 32W, Note 2 (-3dB) THD = -60dB - - - 1 80 - - - * 6 30 37 - - - - - - 60 40 51 28 50 -90 -80 20 to 25,000 10 30 85 - - 2 0.1 - - - - - - - * * 0.1 - 7 90 - - - - -80 - V mA W W W W dB dB Hz V/s dB dB M dB V A W dB Symbol VP IOMmax Test Conditions Min 9 6.4 Typ - - Max 30 - Unit V A Quiescent Current into Pin2 Mute State Voltage on Pin3 Offset Voltage Output Voltage Ripple Rejection Standby State Voltage on Pin3 Total Quiescent Current Ripple Rejection Supply Voltage to Obtain Steady State I2 V3-4 VO VO RR V3-4 Itot RR VP - 2 - - - * 100 70 - 20 70 - * 4.5 - - - 1 - - 7.0 A V V V dB V mA dB V Vi(rms) = 2V, f = 1kHz - - 0 - - 4.5 * Value to be fixed. Note 2. Measured with two superimposed signals of 50Hz and 7kHz with an amplitude relationship of 4:1. Note 3. The closed loop gain is determined by external resistors and is variable between 20dB and 46dB. Note 4. The input impedance is determined by the bias resistor. Note 5. The noise output voltage is measured in a bandwidth of 20Hz to 20kHz with a source resistance of 2k. Note 6. The quiescent current into Pin2 has an impact on the mute time. Pin Connection Diagram (Front View) 1 Input 2 Protection 3 Mute 4 -VCC 5 Output 6 +VCC 7 Bootstrap 8 GND 9 Feedback .961 (24.4) .780 (19.8) .185 (4.7) .489 (12.4) 9 1 .079 (2.0) .674 (17.0) .079 (2.0) .100 (2.54) |
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