ST LM148, LM248, LM348 Operation Manual

LM148
LM248
LM348

FOUR UA741

QUAD BIPOLAR OPERATIONAL AMPLIFIERS

■ LOW SUPPLY CURRENT: 0.53mA/AMPLI-

FIER

■ CLASS AB OUTPUT STAGE: NO CROSS

OVER DIST ORTION

■ PIN COMPATIBLE WITH LM124

■ LOW INPUT OFFSET VOLTAGE: 1mV

■ LOW INPUT OFFSET CURRENT: 2nA

■ LOW INPUT BIAS CURRENT : 30nA

■ GAIN BANDWIDTH PRODUCT: 1.3MHz

■ HIGH DEGREE OF IS OLATION BETWEEN

AMPLIFIERS: 120dB

■ OVERLOAD PROT ECTION FOR INPUTS

AND OUTPUTS

DESCRIPTION

The LM148 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 UA741 operat ional amplifier. In addi­tion the total supply current for all four amplifiers is
compatible to the supply current of a single UA741
type op amp. Other features inclu de inpu t of fset
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 cou­pling.

The LM148 can be used anywhere multiple
UA741 type amplifiers are being used and in appli­cations where amplifier matching or high packaing
density is required.

ORDER CODE

Part

Number

Temperature

Range

LM148 -55°C, +125°C
LM248 -40°C, +105°C
LM348 0°C, +70°C

Example : LM348D

Package

ND

••

••

••

N

DIP14

(Plastic Package)

D

(Plastic Micropackage)

PIN CONNECTIONS (top view)

1

Output 1

V

CC

Output 2

2

3

+

4

5

6

7

Inverting Input 1

Non-inverting Input 1

Non-inverting Input 2

Inverting Input 2

SO14

14

13

-

+

+

-

-

+

12

11

10

+

­9

8

Output 4

Inverting Input 4

Non-inverting Input 4

-

V

CC

Non-inverting Input 3

Inverting Input 3

Output 3

N = Dual in Line Package (DIP)
D = Small Outline Package (SO) - also available i n Tape & Reel (DT)

March 2002

1/5

LM148-LM248-LM348

SCHEMATIC DIAGRAM

Non-inverting input

Inverting

input

Vcc+

25W

Output

350kW

Vcc+

2.5kW

60kW

7.4pF

Vcc+

60W

340W

36kW

Vcc-

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter LM148 LM248 LM348 Unit

V

P

T

T

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

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

Supply voltage ±22 V

CC

V

Input Voltage

i

V

Differential Input Voltage ±44 V

id

Output Short-circuit Duration
Power Dissipation 500 mW

tot

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

oper

Storage Temperature Range -65 to +150 °C

stg

junction will be exceeded.

1)

2)

±22 V

Infinite

2/5

LM148-LM248-LM348

ELECTRICAL CHARACTERISTICS

V

= ±15V, T

CC

Symbol Parameter Min. Typ. Max. Unit

Input Offset Voltage (Rs ≤ 10kΩ)

V

io

Input Offset Current

I

io

Input Bias Current

I

ib

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

A

vd

Supply Voltage Rejection Ratio (R

SVR

Supply Current, all Amp, no load

I

cc

Input Common Mode Voltage Range

V

icm

Common Mode Rejection Ratio (R

CMR

Output Short-circuit Current

I

os

Output Voltage Swing

±V

opp

Slew Rate (V

SR

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

t

r

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

K

OV

R

Input Resistance 0.8 2.5 M

I

GBP

THD

V

o1/Vo2

Gain Bandwith Product (V
f =100kHz)

Total Harmonic Distortion (f = 1kHz, A
C

L

Equivalent Input Noise Voltage (f = 1kHz, Rs = 100

e

n

Channel Separation 120 dB

= 25°C (unless otherwise specified)

amb

T

T

T
T

T
T

amb

min

amb
min

amb

min

= 25°C

≤ T

amb

= 25°C

≤ T

amb

= 25°C

≤ T

amb

≤ T

≤ T

≤ T

max

max

max

15

22575nA

30 100

Ω)

T

= 25°C

amb

T

≤ T

≤ T

amb

max

≤ 10kΩ)

s

= 25°C

≤ T

≤ T

amb

max

= 25°C

≤ T

≤ T

amb

max

= 25°C

≤ T

≤ T

amb

max

≤ 10kΩ)

s

= 25°C

≤ T

≤ T

amb

max

= 25°C

= 25°C RL ≤ 10k

≤ T

≤ T

amb

max

= ±10V, RL = 10kΩ, CL = 100pF, unity Gain)

I

T
T

T
T

T
T

T

T

min

amb

min

amb

min

amb

min

T
T

T

amb

min

amb

min

amb

R

≤ 2k

L

RL ≤ 10k

≤ 2k

R

L

Ω

Ω

Ω

Ω

50

160 V/mV

25

77

100 dB

77

2.1 3.6

±12
±12

70

110 dB

70

10 25 35

12
10

13

12 V
12
10

0.25 0.5 V/µs

0.3 µs
5%

= 10 mV, RL = 10kΩ, CL = 100pF

I

0.7 1.3

= 20dB, RL = 10k

v

Ω

= 100pF, Vo = 2Vpp) 0.08

Ω

40

6

300

4.8

MHz

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

mV

nA

mA

mA

Ω

%

nV

Hz

3/5

LM148-LM248-LM348

PACKAGE MECHANICAL DATA
14 PINS - PLASTIC PACKAGE

Dimensions

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

Millimeters Inches

4/5

PACKAGE MECHANICAL DATA
14 PINS - PLASTIC MICROPACKAGE (SO)

a2

LG

A

LM148-LM248-LM348

C

c1

b

e3

D

14

e

s

a1

b1

E

M

8

F

1

Dimensions

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 i nclude mold flash or protrusions - Mold flash or protrusions shall not exceed 0.15mm (.066 inc) ONLY FOR DATA BOOK.

Information furnished is bel ieved to be accurate and reliable. However, STMicroe lectronics 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 li cense is granted by implication or otherwise unde r any patent or patent rights of STMicroelectronics. Specifications
mentioned in this publication ar e subject to change without notice. This publication supersedes and replaces all information
previously supplied. S TMicroelectronics products are not authorized for use as critica l components in life suppo rt devices or
systems without express written approval of STMicroelectronics.

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

Millimeters Inches

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7

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