LM248D - STMicroelectronics

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■LOW SUPPLY CURRENT: 0.53mA/AMPLI-

FIER

■CLASS AB OUTPUT STAGE: NO CROSS

OVER D ISTORTI ON

■PIN COMPAT IBLE WITH LM124

■LOW INPUT OFFSET VO LTAGE: 1mV

■LOW INPUT OFFSET CURRENT: 2nA

■LOW INPUT BIAS CURRENT: 30nA

■GAIN BANDWIDTH PRODUCT: 1.3MHz

■HIGH DEG REE OF ISOLATION BETWEEN

AMPLIFIERS: 120dB

■OVERL O AD PROT EC TION FOR INPUTS

AND OUTPUTS

DESCRIPTION

The LM148 consists of four independent, high

gain internally compensated, low power opera-

tional amplifiers which have been designed to pro-

vide functional charac teristics identical to tho se of

the familiar UA741 operational amplifier. In addi-

tion the total supply current for all four amplifiers is

compatible to the supply current of a si ngle UA741

type op amp. Other features include input offset

current and input bias current which are much less

than those of a standard UA741. Also, excellent

isolation between amplifiers has been achieved by

independently biasing each amplifier and using

layout techniques qhich minimize thermal cou-

pling.

The LM148 can be used anywhere multiple

UA741 type amplifiers are being used and in appli-

cations where amplifier matching or high packaing

density is required.

ORDER CODE

N = Dual in Line Package (DIP)

D = Small Outline Package (SO) - also available in Tape & Reel (DT)

PIN CONNECTION S (top view)

Part

Number Temperature

Range Package

LM148 -55°C, +125°C ••

LM248 -40°C, +105°C ••

LM348 0°C, +70°C ••

Example : LM348D

DIP14

(Plastic Package)

SO14

(Plastic Micropackage)

Inverting Input 2

Non-inverting Input 2

Non-inverting Input 1

Output 3

Output 4

Non-inverting Input 4

Inverting Input 4

Non-inverting Input 3

Inverting Input 3

Output 1

Inverting Input 1

Output 2

LM148

LM248

LM348

FOUR UA741

QUAD BIPOLAR OPE RA TIONAL AMPLIFIERS

March 2002

LM148-LM248-LM348

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SCHEMATIC DIAGRAM

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter LM148 LM248 LM348 Unit

VCC Supply voltage ±22 V

ViInput Voltage 1)

1. For supply voltage less than m axim um value, the absolute maximum input voltage is equal to the supply voltage.

±22 V

Vid Differential Input Voltage ±44 V

Output Short-circuit Duration 2)

2. Any of the amplifier outputs can be shorted to ground indefinitly; however more than one should not be simultaneously shorted as the maximum

junction will be exc eeded.

Infinite

Ptot Power Dissipation 500 mW

Toper Operating Free-air Temperature Range -55 to +125 -40 to +105 0 to +70 °C

Tstg Storage Temperature Range -65 to +150 °C

Non-inverting input

Inverting

input

Vcc+

350kW

2.5kW

Vcc+

36kW

340W

60W

60kW

Vcc-

25W

7.4pF

Vcc+

Output

LM148-LM248-LM348

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ELECTRICAL CHARACTERISTICS

VCC = ±15V, Tamb = 25°C (unless otherwise specified)

Symbol Parameter Min. Typ. Max. Unit

Vio

Input Offset Voltage (Rs ≤ 10kΩ)

Tamb = 25°C

Tmin ≤ Tamb ≤ Tmax

Iio

Input Offset Current

Tamb = 25°C

Tmin ≤ Tamb ≤ Tmax 225

75 nA

Iib

Input Bias Current

Tamb = 25°C

Tmin ≤ Tamb ≤ Tmax

30 100

300 nA

Avd

Large Signal Voltage Gain (Vo = ±10V, RL = 2kΩ)

Tamb = 25°C

Tmin ≤ Tamb ≤ Tmax

25 160 V/mV

SVR Supply Voltage Rejection Ratio (Rs ≤ 10kΩ)

Tamb = 25°C

Tmin ≤ Tamb ≤ Tmax

77 100 dB

Icc

Supply Current, all Amp, no load

Tamb = 25°C

Tmin ≤ Tamb ≤ Tmax 2.1 3.6

4.8 mA

Vicm

Input Common Mode Voltage Range

Tamb = 25°C

Tmin ≤ Tamb ≤ Tmax ±12

±12

CMR Common Mode Rejection Ratio (Rs ≤ 10kΩ)

Tamb = 25°C

Tmin ≤ Tamb ≤ Tmax

70 110 dB

Ios Output Short-circuit Current

Tamb = 25°C 10 25 35 mA

±Vopp

Output Voltage Swing

Tamb = 25°C RL ≤ 10kΩ

RL ≤ 2kΩ

Tmin ≤ Tamb ≤ Tmax RL ≤ 10kΩ

RL ≤ 2kΩ

12 V

SR Slew Rate (VI = ±10V, RL = 10kΩ, CL = 100pF, unity Gain) 0.25 0.5 V/µs

trRsie Time (VI = ±10V, RL = 10kΩ, CL = 100pF, unity Gain) 0.3 µs

KOV Overshoot (VI = ±10V, RL = 10kΩ, CL = 100pF, unity Gain) 5%

Input Resistance 0.8 2.5 MΩ

GBP Gain Bandwith Product (VI = 10 mV, RL = 10kΩ, CL = 100pF

f =100kHz) 0.7 1.3 MHz

THD Total Harmonic Distortion (f = 1kHz, Av = 20dB, RL = 10kΩ

CL = 100pF, Vo = 2Vpp) 0.08 %

enEquivalent Input Noise Voltage (f = 1kHz, Rs = 100Ω40

Vo1/Vo2 Channel Separation 120 dB

------------

LM148-LM248-LM348

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PACKAGE MECHANICAL DATA

14 PINS - PLASTIC PACKAGE

Dimensions Millimeters Inches

Min. Typ. Max. Min. Typ. Max.

a1 0.51 0.020

B 1.39 1.65 0.055 0.065

b 0.5 0.020

b1 0.25 0.010

D 20 0.787

E 8.5 0.335

e 2.54 0.100

e3 15.24 0.600

F 7.1 0.280

i 5.1 0.201

L 3.3 0.130

Z 1.27 2.54 0.050 0.100

LM148-LM248-LM348

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PACKAGE MECHANICAL DATA

14 PINS - PLASTIC MICROPACKAGE (SO)

Dimensions Millimeters Inches

Min. Typ. Max. Min. Typ. Max.

A 1.75 0.069

a1 0.1 0.2 0.004 0.008

a2 1.6 0.063

b 0.35 0.46 0.014 0.018

b1 0.19 0.25 0.007 0.010

C 0.5 0.020

c1 45° (typ.)

D (1) 8.55 8.75 0.336 0.344

E 5.8 6.2 0.228 0.244

e 1.27 0.050

e3 7.62 0.300

F (1) 3.8 4.0 0.150 0.157

G 4.6 5.3 0.181 0.208

L 0.5 1.27 0.020 0.050

M 0.68 0.027

S 8° (max.)

Note : (1) D and F do not include mold flash or protrusions - Mold flash or protrusions shall not exceed 0.15mm (.066 inc) ONLY FOR DATA B OOK.

be3 eE

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mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information

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systems with out expres s written approval of STMicroelec tronics .

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