LF151 LF251 - LF351 WIDE BANDWIDTH SINGLE J-FET OPERATIONAL AMPLIFIER ■ INTERNALLY ADJUSTABLE INPUT OFFSET VOLTAGE ■ LOW POWER CONSUMPTION ■ WIDE COMMON-MODE (UP TO VCC+) AND DIFFERENTIAL VOLTAGE RANGE ■ LOW INPUT BIAS AND OFFSET CURRENT N DIP8 (Plastic Package) ■ OUTPUT SHORT-CIRCUIT PROTECTION ■ HIGH INPUT IMPEDANCE J–FET INPUT STAGE ■ INTERNAL FREQUENCY COMPENSATION ■ LATCH UP FREE OPERATION ■ HIGH SLEW RATE : 16V/µs (typ) D SO8 (Plastic Micropackage) DESCRIPTION ORDER CODE These circuits are high speed J–FET input singleoperational amplifiers incorporating well matched, high voltage J–FET and bipolar transistors in a monolithic integrated circuit. The devices feature high slew rates, low input bias and offset currents, and low offset voltage temperature coefficient. Package Part Number LF351 LF251 LF151 Temperature Range 0°C, +70°C -40°C, +105°C -55°C, +125°C N D • • • • • • N = Dual in Line Package (DIP) D = Small Outline Package (SO) - also available in Tape & Reel (DT) PIN CONNECTIONS (top view) March 2001 1 8 2 7 3 6 4 5 12345678- Offset null 1 Inverting input Non-inverting input VCCOffset null 2 Output VCC+ N.C. 1/9 LF151 - LF251 - LF351 SCHEMATIC DIAGRAM INPUT OFFSET VOLTAGE NULL CIRCUIT ABSOLUTE MAXIMUM RATINGS Symbol VCC Parameter Supply voltage - note LF151 1) 2) Vi Input Voltage - note Vid Differential Input Voltage - note 3) Ptot Power Dissipation Output Short-circuit Duration - note 4) Toper Operating Free-air Temperature Range Tstg Storage Temperature Range 1. 2. 3. 4. 2/9 LF251 LF351 Unit ±18 V ±15 V ±30 V 680 mW Infinite -55 to +125 -40 to +105 -65 to +150 0 to +70 °C °C All voltage values, except differential voltage, are with respect to the zero reference level (ground) of the supply voltages where the zero reference level is the midpoint between VCC + and VCC -. The magnitude of the input voltage must never exceed the magnitude of the supply voltage or 15 volts, whichever is less. Differential voltages are the non-inverting input terminal with respect to the inverting input terminal. The output may be shorted to ground or to either supply. Temperature and/or supply voltages must be limited to ensure that the dissipation rating is not exceeded LF151 - LF251 - LF351 ELECTRICAL CHARACTERISTICS VCC = ±15V, Tamb = +25°C (unless otherwise specified) Symbol Typ. Max. Input Offset Voltage (Rs = 10kΩ) Tamb = +25°C Tmin ≤ Tamb ≤ Tmax 3 10 13 Input Offset Voltage Drift 10 Iio Input Offset Current- note 1) Tamb = +25°C Tmin ≤ Tamb ≤ Tmax 5 100 4 Iib Input Bias Current -note 1 Tamb = +25°C Tmin ≤ Tamb ≤ Tmax 20 200 20 Avd Large Signal Voltage Gain (RL = 2kΩ, Vo = ±10V) Tamb = +25°C Tmin ≤ Tamb ≤ Tmax 50 25 200 Supply Voltage Rejection Ratio (RS = 10kΩ) Tamb = +25°C Tmin ≤ Tamb ≤ Tmax 80 80 86 Vio DVio SVR Parameter ICC Supply Current, no load Tamb = +25°C Tmin ≤ Tamb ≤ Tmax Vicm Input Common Mode Voltage Range CMR IOS SR tr Kov GBP Ri THD en ∅m 1. µV/°C pA nA nA V/mV dB 1.4 +15 -12 Common Mode Rejection Ratio (RS = 10kΩ) Tamb = +25°C Tmin ≤ Tamb ≤ Tmax 70 70 86 Output Short-circuit Current Tamb = +25°C Tmin ≤ Tamb ≤ Tmax 10 10 40 10 12 10 12 12 13.5 12 16 Tmin ≤ Tamb ≤ Tmax Unit mV ±11 Output Voltage Swing Tamb = +25°C ±Vopp Min. 3.4 3.4 mA V dB mA RL = RL = RL = RL = 2kΩ 10kΩ 2kΩ 10kΩ Slew Rate Vi = 10V, RL = 2kΩ, CL = 100pF, Tamb = +25°C, unity gain Rise Time Vi = 20mV, RL = 2kΩ, CL = 100pF, Tamb = +25°C, unity gain Overshoot Vi = 20mV, RL = 2kΩ, CL = 100pF, Tamb = +25°C, unity gain Gain Bandwidth Product f = 100kHz, Tamb = +25°C,Vin = 10mV, RL = 2kΩ, CL = 100pF 60 60 V V/µs µs 0.1 % 10 MHz 2.5 4 Input Resistance 1012 Total Harmonic Distortion ( f = 1kHz, Av = 20dB RL = 2kΩ, CL = 100pF, Tamb = +25°C,Vo = 2Vpp) 0.01 Ω Equivalent Input Noise Voltage RS = 100Ω, f = 1KHz 15 nV -----------Hz Phase Margin 45 Degrees The input bias currents are junction leakage currents which approximately double for every 10°C increase in the junction temperature. MAXIMUM PEAK-TO-PEAK OUTPUT 3/9 LF151 - LF251 - LF351 VOLTAGE versus FREQUENCY VOLTAGE versus FREQUENCY MAXIMUM PEAK-TO-PEAK OUTPUT VOLTAGE versus FREQUENCY MAXIMUM PEAK-TO-PEAK OUTPUT VOLTAGE versus FREE AIR TEMP. MAXIMUM PEAK-TO-PEAK OUTPUT VOLTAGE versus LOAD RESISTANCE MAXIMUM PEAK-TO-PEAK OUTPUT VOLTAGE versus SUPLY VOLTAGE MAXIMUM PEAK-TO-PEAK OUTPUT INPUT BIAS CURRENT versus FREE AIR 4/9 LF151 - LF251 - LF351 TEMPERATURE AMPLIFICATION versus FREE AIR TEMP. LARGE SIGNAL DIFFERENTIAL VOLTAGE AMPLIFICATION AND PHASE SHIFT versus FREQUENCY TOTAL POWER DISSIPATION versus FREE AIR TEMPERATURE SUPPLY CURRENT PER AMPLIFIER versus FREE AIR TEMPERATURE SUPPLY CURRENT PER AMPLIFIER versus SUPPLY VOLTAGE LARGE SIGNAL DIFFERENTIAL VOLTAGE COMMON MODE REJECTION RATIO versus 5/9 LF151 - LF251 - LF351 FREE AIR TEMPERATURE VOLTAGE FOLLOWER LARGE SIGNAL PULSE RESPONSE OUTPUT VOLTAGE versus ELAPSED TIME EQUIVALENT INPUT NOISE VOLTAGE versus FREQUENCY TOTAL HARMONIC DISTORTION versus FREQUENCY 6/9 LF151 - LF251 - LF351 PARAMETER MEASUREMENT INFORMATION Figure 1 : Voltage Follower Figure 2 : Gain-of-10 inverting amplifier TYPICAL APPLICATION (0.5Hz) SQUARE WAVE OSCILLATOR HIGH Q NOTCH FILTER 7/9 LF151 - LF251 - LF351 PACKAGE MECHANICAL DATA 8 PINS - PLASTIC DIP Millimeters Inches Dim. Min. A a1 B b b1 D E e e3 e4 F i L Z 8/9 Typ. Max. Min. 3.32 0.51 1.15 0.356 0.204 0.020 0.045 0.014 0.008 0.065 0.022 0.012 0.430 0.384 0.313 2.54 7.62 7.62 3.18 Max. 0.131 1.65 0.55 0.304 10.92 9.75 7.95 Typ. 0.100 0.300 0.300 6.6 5.08 3.81 1.52 0.125 0260 0.200 0.150 0.060 LF151 - LF251 - LF351 PACKAGE MECHANICAL DATA 8 PINS - PLASTIC MICROPACKAGE (SO) Millimeters Inches Dim. Min. A a1 a2 a3 b b1 C c1 D E e e3 F L M S Typ. Max. Min. 1.75 0.25 1.65 0.85 0.48 0.25 0.5 0.1 0.65 0.35 0.19 0.25 Typ. Max. 0.026 0.014 0.007 0.010 0.069 0.010 0.065 0.033 0.019 0.010 0.020 0.189 0.228 0.197 0.244 0.004 45° (typ.) 4.8 5.8 5.0 6.2 1.27 3.81 3.8 0.4 0.050 0.150 4.0 1.27 0.6 0.150 0.016 0.157 0.050 0.024 8° (max.) Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. © The ST logo is a registered trademark of STMicroelectronics © 2001 STMicroelectronics - Printed in Italy - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom © http://www.st.com 9/9