NTE887M Integrated Circuit Low Power, JFET OP Amplifier Description: The NTE887M is a JFET–input operational amplifier in an 8–Lead DIP type package designed as a low–power version of the NTE857M amplifier. This device features high input impedance, wide bandwidth, high slew rate, and low input offset and bias current. Features: D Very Low Power Consumption D Typical Supply Current: 200µA D Wide Common–Mode and Differential Voltage Ranges D Low Input Bias and Offset Currents D Common–Mode Input Voltage Range Includes VCC+ D Output Short–Circuit Protection D High Input Impedance: JFET–Input Stage D Internal Frequency Compensation D Latch–Up–Free Operation D High Slew rate: 3.5V/µs Typ Absolute Maximum Ratings: (TA = 0° to +70°C unless otherwise specified) Supply Voltage (Note 1), VCC+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +18V Supply Voltage (Note 1), VCC– . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –18V Differential Input Voltage (Note 2), VID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±30V Input Voltage (Note 1, Note 3), VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±15V Duration of Output Short Circuit (Note 4), ts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Unlimited Continuous Total Dissipation, PD TA ≤ +25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 680mW Derate Above +65°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8mW/°C TA = +70°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 640mW Operating Ambient Temperature Range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0° to +70°C Storage Temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C Lead Temperature (During Soldering, 1/16” (1.6mm) from case for 10sec), TL . . . . . . . . . . . +260°C Note 1. All voltage values, except differential voltages, are with respect to the midpoint between VCC+ and VCC–. Note 2. Differential voltages are at the non–inverting input pin with respect to the inverting input pin. Note 3. The magnitude of the input voltage must never exceed the magnitude of the supply voltage or 15V, whchever is less. Note 4. The output may be shorted to GND or to either supply. Temperature and/or supply voltages must be limited to ensure that the dissipation rating is not exceeded. Electrical Characteristics: (VCC± = ±15V, Note 5 unless otherwise specified) Parameter Input Offset Voltage Temperature Coefficient of Input Offset Voltage Input Offset Current Input Bias Current Symbol VIO aVIO IIO IIB Test Conditions Min Typ Max Unit TA = +25°C – 3 15 mV TA = 0° to +70°C – – 20 mV VO = 0, RS = 50Ω, TA = 0° to +70°C – 10 – µV/°C VO = 0, Note 6 TA = +25°C – 5 200 pA TA = 0° to +70°C – – 5 nA TA = +25°C – 30 400 pA TA = 0° to +70°C – – 10 nA ±11 –12 +15 – V VO = 0, RS = 50Ω Ω VO = 0, Note 6 Common–Mode Input Voltage Range VICR TA = +25°C Maximim Peak Output Voltage Swing VOM RL = 10kΩ, TA = +25°C ±10.0 ±13.5 – V RL ≥ 10kΩ, TA = 0° to +70°C ±10.0 – – V TA = +25°C 3 6 – V/mV TA = 0° to +70°C 3 – – V/mV RL = 10kΩ, TA = +25°C – 1 – MHz TA = +25°C – 1012 – Ω VIC = VICRmin, VO = 0, RS = 50Ω, TA = +25°C 70 86 – dB VCC = ±15V to ±9V, VO = 0, RS = 50Ω, TA = +25°C 70 95 – dB Large–Signal Differential Voltage Amplification Unity–Gain Bandwidth AVD B1 Input Resistance ri Common–Mode Rejection Ratio CMRR Supply Volatge Rejection Ratio (∆VCC±/∆VIO) kSVR VO = ±10V, RL ≥ 10kΩ Ω Total Power Dissipation PD No Load, VO = 0, TA = +25°C – 6.0 7.5 mW Supply Current ICC No Load, VO = 0, TA = +25°C – 200 250 µA AVD = 100, TA = +25°C – 120 – dB Crosstalk Attenuation Vo1/Vo2 Note 5. All characteristics are measured under open–loop conditions with zero common–mode voltage unless otherwise specified. Note 6. Input bias currents of a FET–input operational amplifier are normal junction reverse currents, which are temperature sensitive. Pulse techniques must be used that will maintain the junction temperature as close to the ambient temperature as possible. Operating Characteristics: (VCC± = ±15V, TA = +25°C unless otherwise specified) Parameter Slew Rate at Unity Gain Rise Time Symbol SR tr Test Conditions VI = 10V, RL = 10kΩ, CL = 100pF VI = 20mV, RL = 10kΩ, CL = 100pF Overshoot Factor Equivalent Input Noise Voltage Vn RS = 100Ω, f = 1kHz Min Typ Max Unit 1.5 3.5 – V/µs – 0.2 – µs – 10% – – 42 – nV/√Hz Pin Connection Diagram Offset Null 1 1 Inverting Input 8 N.C. 7 VCC (+) 2 Non–Inverting Input 3 6 Output VCC (–) 4 5 Offset Null 2 8 5 .260 (6.6) 1 4 .300 (7.62) .390 (9.9) Max .155 (3.93) .100 (2.54) .145 (3.68) .300 (7.62)