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LM248 Dataheets PDF



Part Number LM248
Manufacturers Motorola
Logo Motorola
Description Differential Input Operational Amplifiers
Datasheet LM248 DatasheetLM248 Datasheet (PDF)

DifferentialĂInput OperationalĂAmplifiers The LM348 series is a true quad MC1741. Integrated on a single monolithic chip are four independent, low power operational amplifiers which have been designed to provide operating characteristics identical to those of the industry standard MC1741, and can be applied with no change in circuit performance. In addition, the total supply current for all four amplifiers is comparable to the supply current of a single MC1741. Other features include input offse.

  LM248   LM248


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DifferentialĂInput OperationalĂAmplifiers The LM348 series is a true quad MC1741. Integrated on a single monolithic chip are four independent, low power operational amplifiers which have been designed to provide operating characteristics identical to those of the industry standard MC1741, and can be applied with no change in circuit performance. In addition, the total supply current for all four amplifiers is comparable to the supply current of a single MC1741. Other features include input offset currents and input bias currents which are much less than the MC1741 industry standard. The LM348 can be used in applications where amplifier matching or high packing density is important. Other applications include high impedance buffer amplifiers and active filter amplifiers. • Each Amplifier is Functionally Equivalent to the MC1741 • Low Input Offset and Input Bias Currents • Class AB Output Stage Eliminates Crossover Distortion • Pin Compatible with MC3403 and LM324 • True Differential Inputs • Internally Frequency Compensated • Short Circuit Protection • Low Power Supply Current (0.6 mA/Amplifier) Order this document by LM348/D LM348 LM248 DIFFERENTIAL INPUT OPERATIONAL AMPLIFIERS SEMICONDUCTOR TECHNICAL DATA 14 1 N SUFFIX PLASTIC PACKAGE CASE 646 14 1 D SUFFIX PLASTIC PACKAGE CASE 751A (SO–14) Representative Schematic Diagram (1/4 of Circuit Shown) Noninverting Input Inverting Input 4.5 k 39 k 30 pF 7.5 k 10 k 50 k 1.0 k 5.0 k 50 k 50 MOTOROLA ANALOG IC DEVICE DATA PIN CONNECTIONS VCC 25 Output 50 VEE Out 1 1 Inputs 1 2 *)1 3 VCC 4 Inputs 2 5 6 )*2 Out 2 7 14 Out 4 13 *)4 12 Inputs 4 11 VEE 10 )*3 9 Inputs 3 8 Out 3 (Top View) ORDERING INFORMATION Device Operating Temperature Range Package LM248N LM348D LM348N TA = –25° to +85°C TA = 0° to +70°C Plastic DIP SO–14 Plastic DIP © Motorola, Inc. 1995 1 LM348 LM248 MAXIMUM RATINGS (TA = +25°C, unless otherwise noted.) Rating Symbol Value Power Supply Voltage VCC VEE +18 –18 Input Differential Voltage Input Common Mode Voltage Output Short Circuit Duration Operating Ambient Temperature Range Storage Temperature Range Junction Temperature VID VICM tSC TA Tstg TJ ±36 ±18 Continuous –25 to +85 0 to +70 –55 to +125 150 Unit Vdc V V °C °C °C ELECTRICAL CHARACTERISTICS (VCC = +15 V, VEE = –15 V, TA = 25°C, unless otherwise noted.) Characteristic Symbol Min Typ Input Offset Voltage (RS ≤ 10 k) VIO – 1.0 Input Offset Current Input Bias Current Input Resistance Common Mode Input Voltage Range Large Signal Voltage Gain (RL ≥ 2.0 k, VO = ±10 V) IIO IIB ri VICR AVOL – 4.0 – 30 0.8 2.5 ±12 – 25 160 Channel Separation (f = 1.0 Hz to 20 kHz) – – –120 Common Mode Rejection (RS ≤ 10 k) Supply Voltage Rejection (RS ≤ 10 k) Output Voltage Swing (RL ≥ 10 k) (RL ≥ 2 k) Output Short Circuit Current Supply Current (All Amplifiers) CMR PSR VO ISC ID 70 90 77 96 ±12 ±13 ±10 ±12 – 25 – 2.4 Small Signal Bandwidth (AV = 1) Phase Margin (AV = 1) Slew Rate (AV = 1) BW – 1.0 φm – 60 SR – 0.5 Max Unit 6.0 mV 50 nA 200 – MΩ –V – V/mV – dB – dB – V – – – mA 4.5 mA – MHz – Degrees – V/µs ELECTRICAL CHARACTERISTICS (VCC = +15 V, VEE = –15 V, TA = *Thigh to Tlow, unless otherwise noted.) Characteristic Symbol Min Typ Max Unit Input Offset Voltage (RS ≤ 10 kΩ) VIO – – 7.5 mV Input Offset Current LM248 LM348 Input Bias Current LM248 LM348 IIO nA – – 125 – – 100 IIB – – 500 – – 400 Common Mode Input Voltage Range VICR ±12 – –V Large Signal Voltage Gain (RL ≥ 2 k, VO = ±10 V) AVOL 15 – – V/mV Common Mode Rejection (RS ≤ 10 k) Supply Voltage Rejection (RS ≤ 10 k) CMR PSR 70 90 77 96 – dB – Output Voltage Swing (RL ≥ 10 k) (RL ≥ 2 k) VO V ±12 ±13 – ±10 ±12 – * Thigh = 85°C for LM248, and 70°C for LM348. Tlow = –25°C for LM248, and 0°C for LM348. NOTE: Any of the amplifier outputs can be shorted to ground indefinitely; however, more than one should not be simultaneously shorted or the maximum junction temperature will be exceeded. 2 MOTOROLA ANALOG IC DEVICE DATA VO, OUTPUT VOLTAGE (Vpp) A vol, VOLTAGE GAIN (dB) LM348 LM248 Figure 1. Power Bandwidth (Large Signal Swing versus Frequency) 28 24 20 16 12 8.0 4.0 0 10 Voltage Follower THD < 5% 100 1.0 k 10 k f, FREQUENCY (Hz) 100 k Figure 2. Open Loop Frequency Response 120 100 80 60 40 20 0 –20 1.0 10 100 1.0 k 10 k 100 k 1.0 M 10 M f, FREQUENCY (Hz) Figure 3. Positive Output Voltage Swing versus Load Resistance 15 14 13 12 11 10 9.0 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.0 100 200 ±15 V Supplies ±12 V ± 9.0 V ± 6.0 V 500 700 1.0 k 2.0 k 5.0 k 7.0 k 10 k RL, LOAD RESISTANCE (Ω) VO, OUTPUT VOLTAGE (Vpp) Figure 4. Negative Output Voltage Swing versus Load Resistance –15 –14 –13 –12 –11 –10 –9.0 –8.0 –7.0 –6.0 –5.0 –4.0 –3.0 –2.0 –1.0 100 200 500 700 1.0 k ±15 V Supplies ±12 V ± 9.0 V ± 6.0 V 2.0 k 5.0 k 7.0 k 10 k RL, LOAD RESISTANCE (Ω) VO, OUTPUT VOLTAGE (Vpp) SUPPLY VO, OUTPUT VOLTAGE SWING (Vpp) Figure 5. Output Voltage Swing versus Load Resistance .


LM348 LM248 GS1117A


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