Datasheet

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LM148-N, LM248-N, LM348-N

www.ti.com

SNOSBT2E –MAY 1999–REVISED MARCH 2013

LM148/LM248/LM348 Quad 741 Op Amps

Check for Samples: LM148-N, LM248-N, LM348-N

FEATURES

DESCRIPTION

The LM148 series is a true quad 741. It consists of

• 741 Op Amp Operating Characteristics

four independent, high gain, internally compensated,

• Class AB Output Stage—No Crossover

low power operational amplifiers which have been

Distortion

designed to provide functional characteristics

• Pin Compatible With the LM124

identical to those of the familiar 741 operational

amplifier. In addition the total supply current for all

• Overload Protection for Inputs and Outputs

four amplifiers is comparable to the supply current of

• Low Supply Current Drain: 0.6 mA/Amplifier

a single 741 type op amp. Other features include

• Low Input Offset Voltage: 1 mV

input offset currents and input bias current which are

much less than those of a standard 741. Also,

• Low Input Offset Current: 4 nA

excellent isolation between amplifiers has been

• Low Input Bias Current 30 nA

achieved by independently biasing each amplifier and

• High Degree of Isolation Between Amplifiers:

using layout techniques which minimize thermal

120 dB

coupling.

• Gain Bandwidth Product

The LM148 can be used anywhere multiple 741 or

– LM148 (Unity Gain): 1.0 MHz

1558 type amplifiers are being used and in

applications where amplifier matching or high packing

density is required. For lower power refer to LF444.

Schematic Diagram

* 1 pF in the LM149

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (22 pages)

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LM148-N, LM248-N, LM348-N www.ti.com SNOSBT2E – MAY 1999 – REVISED MARCH 2013 LM148/LM248/LM348 Quad 741 Op Amps Check for Samples: LM148-N, LM248-N, LM348-N FEATURES DESCRIPTION • • The LM148 series is a true quad 741. It consists of four independent, high gain, internally compensated, low power operational amplifiers which have been designed to provide functional characteristics identical to those of the familiar 741 operational amplifier.
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LM148-N, LM248-N, LM348-N SNOSBT2E – MAY 1999 – REVISED MARCH 2013 www.ti.com These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
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LM148-N, LM248-N, LM348-N www.ti.com SNOSBT2E – MAY 1999 – REVISED MARCH 2013 Electrical Characteristics (continued) These specifications apply for VS = ±15V and over the absolute maximum operating temperature range (TL ≤ TA ≤ TH) unless otherwise noted. Parameter Slew Rate Conditions LM148 Min TA = 25°C, LM148 Series (AV = 1) Output Short Circuit Current TA = 25°C Input Offset Voltage RS ≤ 10 kΩ Typ LM248 Max Min Typ LM348 Max Min Typ Units Max 0.5 0.5 0.5 V/μs 25 25 25 mA 6.0 7.
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LM148-N, LM248-N, LM348-N SNOSBT2E – MAY 1999 – REVISED MARCH 2013 www.ti.com Typical Performance Characteristics 4 Supply Current Input Bias Current Figure 1. Figure 2. Voltage Swing Positive Current Limit Figure 3. Figure 4. Negative Current Limit Output Impedance Figure 5. Figure 6.
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LM148-N, LM248-N, LM348-N www.ti.com SNOSBT2E – MAY 1999 – REVISED MARCH 2013 Typical Performance Characteristics (continued) Common-Mode Rejection Ratio Open Loop Frequency Response Figure 7. Figure 8. Bode Plot LM148 Large Signal Pulse Response (LM148) Figure 9. Figure 10. Small Signal Pulse Response (LM148) Undistorted Output Voltage Swing Figure 11. Figure 12.
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LM148-N, LM248-N, LM348-N SNOSBT2E – MAY 1999 – REVISED MARCH 2013 www.ti.com Typical Performance Characteristics (continued) 6 Gain Bandwidth Slew Rate Figure 13. Figure 14. Inverting Large Signal Pulse Response (LM148) Input Noise Voltage and Noise Current Figure 15. Figure 16. Positive Common-Mode Input Voltage Limit Negative Common-Mode Input Voltage Limit Figure 17. Figure 18.
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LM148-N, LM248-N, LM348-N www.ti.com SNOSBT2E – MAY 1999 – REVISED MARCH 2013 APPLICATION HINTS The LM148 series are quad low power 741 op amps. In the proliferation of quad op amps, these are the first to offer the convenience of familiar, easy to use operating characteristics of the 741 op amp. In those applications where 741 op amps have been employed, the LM148 series op amps can be employed directly with no change in circuit performance.
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LM148-N, LM248-N, LM348-N SNOSBT2E – MAY 1999 – REVISED MARCH 2013 www.ti.com Typical Applications—LM148 Figure 19. One Decade Low Distortion Sinewave Generator fMAX = 5 kHz, THD ≤ 0.03% R1 = 100k pot. C1 = 0.0047 μF, C2 = 0.01 μF, C3 = 0.1 μF, R2 = R6 = R7 = 1M, R3 = 5.1k, R4 = 12Ω, R5 = 240Ω, Q = NS5102, D1 = 1N914, D2 = 3.6V avalanche diode (ex.
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LM148-N, LM248-N, LM348-N www.ti.com SNOSBT2E – MAY 1999 – REVISED MARCH 2013 Figure 21. Low Drift Peak Detector with Bias Current Compensation Adjust R for minimum drift D3 low leakage diode D1 added to improve speed VS = ±15V Figure 22.
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LM148-N, LM248-N, LM348-N SNOSBT2E – MAY 1999 – REVISED MARCH 2013 www.ti.com Figure 23. A 1 kHz 4 Pole Butterworth Use general equations, and tune each section separately Q1stSECTION = 0.541, Q2ndSECTION = 1.
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LM148-N, LM248-N, LM348-N www.ti.com SNOSBT2E – MAY 1999 – REVISED MARCH 2013 Figure 24. A 3 Amplifier Bi-Quad Notch Filter Ex: fNOTCH = 3 kHz, Q = 5, R1 = 270k, R2 = R3 = 20k, R4 = 27k, R5 = 20k, R6 = R8 = 10k, R7 = 100k, C1 = C2 = 0.001 μF Better noise performance than the state-space approach. Figure 25. A 4th Order 1 kHz Elliptic Filter (4 Poles, 4 Zeros) R1C1 = R2C2 = t R′1C′1 = R′2C′2 = t′ fC = 1 kHz, fS = 2 kHz, fp = 0.543, fZ = 2.14, Q = 0.841, f′ P = 0.987, f′ Z = 4.92, Q′ = 4.
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LM148-N, LM248-N, LM348-N SNOSBT2E – MAY 1999 – REVISED MARCH 2013 www.ti.com Use the BP outputs to tune Q, Q′, tune the 2 sections separately R1 = R2 = 92.6k, R3 = R4 = R5 = 100k, R6 = 10k, R0 = 107.8k, RL = 100k, RH = 155.1k, R′1 = R′2 = 50.9k, R′4 = R′5 = 100k, R′6 = 10k, R′0 = 5.78k, R′L = 100k, R′H = 248.12k, R′f = 100k. All capacitors are 0.001 μF. Figure 26. Lowpass Response Typical Simulation Figure 27.
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LM148-N, LM248-N, LM348-N www.ti.com SNOSBT2E – MAY 1999 – REVISED MARCH 2013 Connection Diagram Figure 28.
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LM148-N, LM248-N, LM348-N SNOSBT2E – MAY 1999 – REVISED MARCH 2013 www.ti.com REVISION HISTORY Changes from Revision D (March 2013) to Revision E • 14 Page Changed layout of National Data Sheet to TI format ..........................................................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 1-Nov-2013 (6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish value exceeds the maximum column width. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided.
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PACKAGE MATERIALS INFORMATION www.ti.com 8-Apr-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant LM348MX SOIC D 14 2500 330.0 16.4 6.5 9.35 2.3 8.0 16.0 Q1 LM348MX/NOPB SOIC D 14 2500 330.0 16.4 6.5 9.35 2.3 8.0 16.
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PACKAGE MATERIALS INFORMATION www.ti.com 8-Apr-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LM348MX SOIC D 14 2500 367.0 367.0 35.0 LM348MX/NOPB SOIC D 14 2500 367.0 367.0 35.
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MECHANICAL DATA NFF0014A N0014A N14A (Rev G) www.ti.
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