NTE1627 Integrated Circuit Power Amp, 550mW, for Battery Operated Radios Description: The NTE1627 is a monolithic integrated circuit in a 9–Lead SIP type package consisting of a power amplifier intended for applications such as portable radios, tape recorders, and intercoms. It operates from a supply voltage of 6V and can deliver the rated output power of 350mW (THD = 10%) to a load of 8Ω. A maximum output power of 550mW is attainable. Features: D Delivers 350mW (THD = 10%) of Output Power to a 8Ω Load with 6V Operation D Excellent Low–Voltage Characteristics (Starting Voltage < 2V) D Housed in a Compact 9–Lead SIP Package Comparable in Size to a Preamplifier IC D Low Current Consumption (Typically 4.8mA) Applications: D Portable Radios D Portable Tape Recorders D Intercoms Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12V Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500mW Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –25° to +75°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +125°C Electrical Characteristics: (TA = +25°C, VCC = 6V, RL = 8Ω, f = 1kHz unless otherwise specified) Parameter Quiescent Current Symbol IQ Test Conditions Min Typ Max Unit VIN = 0V – 4.8 7 mA Voltage Gain (Closed Loop) GVC RNF = 68Ω 47 50 53 dB Maximum Output Power POM VIN = –30dBm 420 550 – mW Rated Output Power POUT THD = 10% 250 350 – mW Total Harmonic Distortion THD PO = 100mW – 1.1 2.5 % Output Noise Voltage VNO Rg = 10kΩ – 1.0 2.5 mVrms Input Resistance RIN – 25 – kΩ Pin Connection Diagram (Front View) 9 Bypass 8 Input 7 NFB 6 Filter 5 GND 4 Output 3 VCC 2 Phase 1 Phase .110 (2.8) .870 (22.0) .235 (6.0) 1 9 .195 (5.0) .100 (2.54) .800 (20.32) .012 (0.30)