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NTE871
Integrated Circuit Wideband High Speed Operational Amp
Description: The NTE871 is a large-signal wideband, high speed operational amplifier which has a unity gain crossover frequency (fT) of approximately 38MHz and an open-loop, 3dB corner frequency of approximately 110kHz. It can operate at a total supply voltage of from 14 to 36 volts (7 to 18 votls when using split supplies) and can provide at least 18VP-P and 30mAP-P at the output when operating from 15 volt supplies. The NTE871 can be compensated with a single external capacitor and has DC offset adjust terminals for those applications requiring offset null. The NTE871 circuit contains both bipolar and PMOS transistors on a single monlithic chip and is supplied in a 8-Lead TO5 package. Features: D High Open-Loop Gain at Video Frequencies: 42dB Typ. at 1MHz D High Unity-Gain Crossover Frequency: fT = 38MHz Typ. D Wide Power Bandwidth; VO = 18VP-P: 1.2MHz Typ. D High Slew Rate; 20dB Amplifier: 70V/s Typ. Unity-Gain Amplifier: 25V/s Typ. D Fast Setting Time: 0.6s Typ. D High Output Current: 15mA Min. D Single Capacitor Compensation D Offset Null Terminals Absolute Maximum Ratings: Supply Voltage (Between V+ and V- terminals) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36V Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12V Input Voltage to GND (Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V Offset Terminal to V- Terminal Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5V Output Current (Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50mA Device Dissipation (Up to TA = +55C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 630mW Derate Above TA = +55C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.67mW/C Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to +125C Storage Temperature range. Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65 to +150C Lead Temperature (During Soldering), TL At distance 1/16" 1/32" (1.59 0.79mm) from case for 10s max . . . . . . . . . . . . . . . . +265C Note 1. If the supply voltage is less than 15 volts, the maximum input voltage to GND is equal to the supply voltage. Note 2. The NTE871 does not contain circuitry to protect against short circuits in the output.
Electrical Characteristics: (TA = +25C, VCC = 15V unless otherwise specified)
Parameter Static Input Offset Voltage Input Bias Current Input Offset Current Low-Frequency Open-Loop Voltage Gain Common-Mode Input Voltage Range Common-Mode Rejection Ratio Maximum Output Voltage: Positive Negative Maximum Output Current: Positive Negative Supply Current Power Supply Rejection Ratio Dynamic Unity-Gain Crossover Frequency 1MHz Open-Loop Voltage Gain Slew Rate 20dB Amplifier Follower Mode Power Bandwidth 20dB Amplifier Follower Mode Open-Loop Differential Impedance Open-Loop Output Impedance Wideband Noise Voltage Referred to Input Setting Time (To Within 50mV of 9V Output Swing) ZI ZO PBW (Note 4) fT AOL SR AV = 10, CC = 0, VI = 1V (Pulse) AV = 1, CC = 10pF, VI = 10V (Pulse) AV = 10, CC = 0, VO = 10VP-P AV = 1, CC = 10pF, VO = 10VP-P F = 1MHz F = 1MHz 50 - 0.8 - - - - - 70 25 1.2 0.4 30 110 8 0.6 - - MHz - - - - - - k VRMS s CC = 0, VO = 0.3VP-P f = 1MHz, CC = 0, VO = 10VP-P - 36 38 42 - - MHz dB V/s VIO IIB IIO AOL VICR CMRR VOM+ VOM- VOM+ VOM- I+ PSRR VO = 0 0.1V VO = 0 0.1V VO = 0 0.1V VO = 1V Peak, F = 1kHz, Note 3 CMRR 76dB VI Common Mode = 12V Differential Input Voltage = 0 0.1V RL = 2k Differential Input Voltage = 0 0.1V RL = 250k VO = 0 0.1V, RL 10k V+ = 1V, V- = 1V - - - 56 12 76 +9 -9 +15 -15 - 60 1 0.7 0.05 61 +14 -13 90 +11 -11 +30 -30 8.5 70 5 2.0 0.4 - - - - - mA - - 10.5 - mA dB mV A A dB V dB V Symbol Test Conditions Min Typ Max Unit
eN(Total) BW = 1MHz, RS = 1k ts RL = 2k, CL = 20pF
Note 3. Low-frequency dynamic characteristics. Slew Rate Note 4. Power Bandwidth = VO (P-P)
Pin Connection Diagram (Top View) Offset Null 5 Output 6 4 V (-)
V (+)
7
3 Non-Inverting Input
Phase Compensation
8 1
2
Inverting Input
Offset Null and Phase Compensation
.370 (9.39) Dia Max .335 (8.52) Dia Max
.177 (4.5) Max
.492 (12.5) Min
.018 (0.45) Dia Typ 3 4 5 7 6 .200 (5.06) Dia
2 1 8 45
.032 (0.82)

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