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| NTE1670 Integrated Circuit Air Core Meter Driver Description: The NTE1670 is a function generator/driver for air-core (moving-magnet) meter movements in a 14-Lead DIP type package. A Norton amplifier and an NPN transistor are included on chip for signal conditioning as required. Driver outputs are self-centering and develop 4.5V swing at 20mA. Better than 2% linearity is guaranteed over a full 305-degree operating range. Features: D Self-Centering 20mA Outputs D 12V Operation D Norton Amplifier D Function Generator Applications: D Air-Core Meter Driver D Tachometers D Ruggedized Instruments Absolute Maximum Ratings: Supply Voltage (Pin13), VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20V Power Dissipation (Note 1), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1300mW Collector-Emitter Breakdown Voltage, V(BR)CEO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20VMIN Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40C to +85C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65C to -150C Lead Temperature (During soldering, 10sec Max), TL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +260C Note 1 For operation above +25C, the NTE1670 must be derated based upon a +125C maximum junction temperature and a thermal resistance of +76C/W which applies for the device soldered in a printed circuit board and operating in a still-air ambient. Electrical Characteristics: (VCC = 13.1V TA = +25C unless otherwise specified) Parameter Supply Current (Pin13) Regulator Voltage (Pin11) Regulator Output Resistance (Pin11) Symbol IS VREG Test Conditions Zero Input Frequency IREG = 0mA IREG = 0mA to 3mA Min - 8.1 - Typ - 8.5 13.5 Max 65 8.9 - Unit mA V Electrical Characteristics (Cont'd): (VCC = 13.1V TA = +25C unless otherwise specified) Parameter Reference Voltage (Pin4) Reference Output Resistance (Pin4) Norton Amplifier Mirror Gain(Pin5, Pin6) NPN Transistor DC Gain (Pin9, Pin10) Function Generator Feedback Bias Current (Pin1) Drive Voltage Extremes, Sine and Cosine (Pin2, Pin12) Sine Output Voltage with Zero Input (Pin2) Function Generator Linearity Function Generator Gain k hFE V1 = 5.1V ILOAD = 20mA V8 = VREF FSD = 305 Meter Deflection/V8 Symbol VREF Test Conditions IREF = 0mA IREF = 0A to 50A IBIAS ^ 20A Min 1.9 - 0.9 - - 4.0 -350 - Typ 2.1 5.3 1.0 125 1.0 4.5 0 - Max 2.3 - 1.1 - - - +350 1.7 mA V mV %FSD /V Unit V k 50.75 53.75 56.75 Pin Connection Diagram Common 1 Sine Output 2 N.C. 3 N.C. 4 Inverting Input 5 Non-Inverting Input 6 GND 7 14 GND 13 VCC 12 Cosine Output 11 8.5V Reg 10 Signal Input 9 Pulse Train 8 Norton Amp Out 14 8 1 7 .785 (19.95) Max .200 (5.08) Max .300 (7.62) .100 (2.45) .600 (15.24) .099 (2.5) Min |
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