NTE1852

NTE1852 Integrated Circuit 4W Audio Amplifier with DC Volume Control Description: The NTE1852 is a monolithic integrated 4W audio Amplifier circuit with DC volume control in a 9−pin single in−line (SIP) plastic package. The wide supply voltage range makes this circuit very suitable for applications such as television receivers and record players. The DC volume control stage has a logarithmic control characteristic with a range of more than 80dB. Control can be obtained by means of a variable DC voltage between 3.5 and 8V. The audio amplifier has a well−defined open−loop gain and a fixed integrated closed−loop gain. This offers an optimum in number of external components, performance and stability Features: D DC volume control D SIP package D Low distortion D Logarithmic control Applications: D Computers D Intercom D AM/FM Radio D Television D Modems Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35V Non−repetitive peak output current, IOSM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3A Repetitive peak output current, IORM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5A Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65 to +150°C Total Power Dissipation, PTOT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see derating curve DC and AC Electrical Characteristics: (VCC = 18V; RL = 8Ω; f = 1kHz; TA = 25°C, unless otherwise specified) Parameter Supply Voltage Total quiescent current Symbol VCC ITOT Min 15 − Typ − 35 Max 35 − Unit V mA Parameter Noise output voltage (see note) Total sensitivity (DC control at maximum gain for PO = 2.5W) Frequency response (−3dB) AUDIO AMPLIFIER Repetitive peak output current Output power at dTOT = 10% Total harmonic distortion at PO = 2.5W Voltage gain Sensitivity for PO = 2.5W Input impedance (Pin 5) DC VOLUME CONTROL UNIT Gain Control Range Signal handling at dTOT < 1% (DC control at 0dB) sensitivity for VO = 125mV at maximum voltage gain Input impedance (Pin 8) Output impedance (Pin 6) Symbol Vn Vi f IORM PO dTOT AV Vi ⎪ZI⎪ φ Vi Vi ⎪ZI⎪ ⎪ZO⎪ Min − 38 35Hz − 4 − − 100 100 80 1.2 − 100 100 Typ − 55 − − 4.5 0.5 30 125 250 − − 55 250 200 Max 1.4 69 20 1.5 − 1 − 160 500 − − − − 400 Unit mV mV kHz A W % dB mV kΩ dB V mV kΩ Ω Note: RS = 5kΩ and DC control at minimum gain. .827 (21.0) .130 (3.3) Dia .065 (1.68) .242 (6.1) 9 8 7 6 5 4 DC Control Amp GND DC Control Amp Input Seating Plane .590 (15.0) Control Voltage DC Control Voltage Power Amp Input Bypass .228 .728 (5.8) (18.5) .169 (4.3) .250 (6.35) 1 9 3 VCC 2 1 Power Amp Output Power Amp GND .134 (3.42) .100 (2.54) .118 (3.0) Min .140 (3.56) .886 (22.0)