NTE997 Integrated Circuit Quad Operational Amplifier Description: The NTE997 is a monolithic quad operational amplifier in a 14–Lead DIP type package consisting of four independent high gain, internally compensated operational amplifiers. The specifically designed low noise input transistors allow the NTE997 to be used in low noise signal processing applications such as audio preamplifiers and signal conditioners. The simplified output stage completely eliminates crossover distortion under any load conditions, has large source and sink capacity, and is short– circuit protected. A novel current source stabilizes output parameters over a wide power supply voltage range. Features: D Unity Gain Bandwidth: 3MHz D Continuous Short Circuit Protection D No Frequency Compensation Required D No Latch–Up D Large Common Mode and Differential Voltage Ranges D Parameter Tracking Over Temperature Range D Gain and Phase Match Between Amplifiers Absolute Maximum Ratings: Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±18V Differential Input Voltage (Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±30V Input Voltage (Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±15V Internal Power Dissipation (TA = +70°C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 670mW Derate Above 70°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.3mW/°C Output Short Circuit Duration (Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Indifinite Operating Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +125°C Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +125°C Lead Temperature (During Soldering, 10sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +260°C Note 1. For supply voltage less than ±15V, the absolute maximum input voltage is equal to the supply voltage. Note 2. Short–circuit may be to GND, one amplifier only. ISC = 45mA (Typical). Electrical Characteristics: (TA = +25°C, VS = ±15V unless otherwise specified) Parameter Test Conditions Input Offset Voltage Min Typ Max Unit RS ≤ 10kΩ – 0.5 5.0 mV RS ≤ 10kΩ, –55° ≤ TA ≤ +125°C – – 6.0 mV – 5 200 nA – – 500 nA – 40 500 nA – – 1500 nA 0.3 5.0 – MΩ RL ≥ 2kΩ, VOUT = ±10V 50k 300k – RL ≥ 2kΩ, VOUT = ±10V, –55° ≤ TA ≤ +125°C 25k – – RL ≥ 10kΩ ±12 ±14 – V RL ≥ 2kΩ ±10 ±13 – V RL ≥ 2kΩ, –55° ≤ TA ≤ +125°C ±12 – – V ±12 ±14 – V Input Offset Current –55° ≤ TA ≤ +125°C Input Bias Current –55° ≤ TA ≤ +125°C Input Resistance Large Signal Voltage Gain Output Voltage Swing Input Voltage Range Common Mode Rejection Ratio RS ≤ 10kΩ 70 90 – dB Supply Voltage Rejection Ratio RS ≤ 10kΩ – 30 150 µV/V – 210 340 mW TA = –55°C – 240 400 mW TA = +125°C – 180 300 mW VIN = 20mV, RL = 2kΩ, CL ≤ 100pF – 5.0 – % 2.0 3.0 – MHz Power Consumption Transient Response (Unity Gain) Overshoot Unity Gain Bandwidth Slew Rate (Unity Gain) RL ≥ 2kΩ – 1.5 – V/µs Channel Separation (Open Loop) f = 10kHz, RS = 1kΩ, Gain = 100 – 105 – dB Pin Connection Diagram Invert Input A 1 Non–Invert Input A 2 14 Invert Input D 13 Non–Invert Input D Output A 3 12 Output D Output B 4 11 (+) VCC Non–Invert Input B 5 Invert Input B 6 (–) VCC 7 10 Output C 9 Non–Invert Input C 8 Invert Input C 14 8 1 7 .785 (19.95) Max .300 (7.62) .200 (5.08) Max .100 (2.45) .600 (15.24) .099 (2.5) Min