NTE724 Integrated Circuit Differential/Cascode Amplifier Description: The NTE724 is a differential/cascode amplifier in an 8Lead TO5 type metal can package designed for use in communications and industrial equipment operating at frequencies from dc to 120MHz. Features: Controlled for Input Offset Voltage, Input Offset Current, and Input Bias Current Balanced Differential Amplifier Configuration with Controlled ConstantCurrent Source Single and DualEnded Operation Applications: RF and IF Amplifiers (Differential or Cascode) DC, Audio, and Sense Amplifiers Converter in the Commercial FM Band Oscillator Mixer Limiter Absolute Maximum Ratings: (T = +25C unless otherwise specified) A Power Dissipation (T +85C), P . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 450mW A D Derate Linearly Above 85C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5mW/C Operating Ambient Temperature Range, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 to +125C opr Storage Temperature Range, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 to +150C stg Lead Temperature (During Soldering, 1/16 from case, 10sec max), T . . . . . . . . . . . . . . . . . +265C L Electrical Characteristics: (T = +25C, V = +12V, V = 12V unless otherwise specified) A CC EE Parameter Symbol Test Conditions Min Typ Max Unit Input Bias Current I V = +6V, V = 6V 16.6 70.0 A II CC EE 36 106 A Quiescent Operating Current I or I V = +6V, V = 6V 0.8 1.25 2.0 mA 6 8 CC EE 2.0 3.3 5.0 mA AGC Bias Current (Into Constant I V = 12V, V = 9V 1.28 mA 7 CC AGC Current Source Pin7) V = 12V, V = 12V 1.65 mA CC AGCElectrical Characteristics (Contd): (T = +25C, V = +12V, V = 12V unless otherwise A CC EE specified) Parameter Symbol Test Conditions Min Typ Max Unit Input Current (Pin7) I V = +6V, V = 6V 0.5 0.85 1.0 mA 7 CC EE 1.0 1.65 2.1 mA Device Dissipation P V = +6V, V = 6V 24 36 54 mW T CC EE 120 175 260 mW Power Gain G Cascode 16 20 dB V = 9V, P CC f = 100MHz Differential Amp 14 17 dB V = 9V, Cascode 35 39 dB CC f = 10.7MHz Differential Amp 28 32 dB Noise Figure NF V = 9V, Cascode 7.2 9.0 dB CC f = 100MHz Differential Amp 6.7 9.0 dB Power Output (Untuned) P Diff. Amp 50 InputOutput 5.7 W V = 9V, O CC f = 10.7MHz AGC Range AGC Differential Amp 62 dB Voltage Gain A V = 0V, Cascode 40 dB CC f = 10.7MHz Differential Amp 30 dB R = 1k L PeaktoPeak Output Current I V = 9V 2.0 4.0 7.0 mA Differential Amp, f = 10.7MHz, PP CC e = 400mV in V = 12V 3.5 6.0 10.0 mA CC Pin Connection Diagram (Top View) Input Low 5 Output High Current Source Emitter 4 6 AGC Substrate and Case 3 7 2 8 Output Low Current Source Bias 1 Input High
