SGS Thomson Microelectronics LM348N, LM348D, LM348, LM248D, LM248 Datasheet

QUAD BIPOLAR OPERATIONAL AMPLIFIERS

.LOWSUPPLYCURRENT:0.53mA/AMPLIFIER

.CLASS AB OUTPUT STAGE : NO CROSS-

OVERDISTORTION

.PINCOMPATIBLEWITH LM124

.LOW INPUTOFFSETVOLTAGE:1mV

.LOW INPUTOFFSETCURRENT : 2nA

.LOW INPUTBIASCURRENT : 30nA

.GAINBANDWIDTHPRODUCT : 1.3MHz

.HIGH DEGREE OF ISOLATION BETWEEN

AMPLIFIERS: 120dB

.OVERLOADPROTECTIONFORINPUTSAND

OUTPUTS

LM24 8 - LM34 8

N

DIP14

(PlasticPackage)

ORDER CODES

LM148

FOURUA741

D

SO14

(PlasticMicropackage)

DESC RIP TI ON

The LM148consistsof four independent,high gain
internally compensated, low power operational
amplifiers which have been designed to provide
functionalcharacteristicsidenticaltothoseofthefa­miliar UA741 operational amplifier. In addition the
total supplycurrent forall fouramplifiersis compa­rable to the supply current of a singleUA741type
op amp. Other featuresincludeinput offsetcurrent
and input bias current which are much less than
thoseof a standardUA741.Also,excellentisolation
between amplifiers has been achieved by inde­pendentlybiasing each amplifier and using layout
techniqueswhichminimize thermal coupling.

The LM148can beusedanywheremultipleUA741
type amplifiers are being used and in applications
whereamplifier matchingor highpackingdensityis
required.

Part Num-

ber

LM148 –55
LM248 –40
LM348 0

Example : LM348D

PIN CONNECTIONS (top view)

Outpu t 1

Inve rt ing i npu t 1

Non-inver ting i nput 1

V

CC

Non-inv ert ing input 2

Inve rting input 2

Out put 2

1

2

3

+

4

5

6

7

Temperature

Range

o

C, +125oC ••

o

C, +105oC ••

o

C, +70oC ••

Package

ND

Output 4

14

Inverti ng i npu t 4

13

N on-in ver ting i nput 4

12

-

V

11

CC

10

N on-in ver ting i nput 3

9

Inverting input3

8

Output 3

November 1997

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LM148 - LM248 - L M348

SCHE MATIC DIAGRAM

Non-inverting input

Inverting

Input

350k

V

CC

25 Ω

12k Ω

Ω

Output

V

60k

7.4pF

2.5kΩ

CC

V

CC

60k Ω

340 Ω

Ω

36k Ω

Ω

25

V

CC

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter LM148 LM248 LM348 Unit

V

CC

V

V

P

T

oper

T

stg

Notes : 1. For supply voltage less than maximum value, t he absolute maximum input volt age i s equal to the supply

Supply Voltage ± 22 ± 22 ± 22 V
Differential Input Voltage ±44 ± 44 ± 44 V

id

Input Voltage (note 1) ± 22 ± 22 ± 22 V

i

Power Dissipation 500 500 500 mW

tot

Output Short-circuit Duration (note 2) Infinite
Operating Free-air Temperature Range –55, +125 –40, +105 0, +70
Storage Temperature Range –65, +150 –65, +150 –65, +150

voltage.

2. Any of the amplifi er outputs can be shorted to ground indefinitely ; however, more than one s hould not be
simultaneously shorted as the maximum junction temperature will be exceeded.

o

C

o

C

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ELECTRICAL CHARACTERISTICS

= ±15V, T

V

CC

Symbol Parameter

V

io

I

io

I

ib

A

vd

SVR Supply Voltage Rejection Ratio (R

I

CC

V

icm

CMR Common Mode Rejection Ratio (R

I

OS

± V

opp

SR Slew Rate (V

t

r

K

OV

R

I

GBP Gain Bandwidth Product (V

THD Total Harmonic Distortion (f = 1kHz, A

e

n

V

o1/Vo2

= 25oC (unless otherwise specified)

amb

Input OffsetVoltage (RS≤ 10kΩ)

=25oC

T

amb

T

min

. ≤ T

amb

≤ T

max.

Input OffsetCurrent

=25oC

T

amb

T

min

. ≤ T

amb

≤ T

max.

Input Bias Current

=25oC

T

amb

T

min

. ≤ T

amb

≤ T

max.

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

=25oC

T

amb

T

T
T

min

amb
min

. ≤ T

. ≤ T

amb

=25oC

amb

≤ T

≤ T

max.

max.

Supply Current, all Amp, no Load

=25oC

T

amb

T

min

. ≤ T

amb

≤ T

max.

Input Common Mode Voltage Range

=25oC

T

amb

T

T
T

min

amb
min

. ≤ T

. ≤ T

amb

=25oC

amb

≤ T

≤ T

max.

max.

Output Short-circuit Current

=25oC 102535

T

amb

Output Voltage Swing

=25oCR

T

amb

. ≤ T

T

min

unity Gain) 0.25 0.5

≤ T

amb

max.

= ±10V, RL= 10kΩ,CL= 100pF,

I

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

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

Input Resistance 0.8 2.5 MΩ

= 100pF, f = 100kHz) 0.7 1.3

C

L

= 10k

Ω,

R

L

CL= 100pF, Vo=2Vpp) 0.08

I

Equivalent Input Noise Voltage
(f = 1kHz, R

= 100Ω)40

s

Channel Separation 120 dB

≤ 10kΩ)

S

≤ 10kΩ)

S

= 10kΩ

L

=2kΩ

R

L

RL= 10kΩ

=2kΩ

R

L

= 10 mV, RL= 10kΩ,

= 20dB,

v

LM148 - LM248 - LM348

LM148 - LM248 - LM348

Min. Typ. Max.

50
25

77
77

±12
±12

70
70

12
10
12
10

15

225

30 100

160

100

2.1 3.6

110

13
12

6

75

300

4.8

Unit

mV

nA

nA

V/mV

dB

mA

V

dB

mA

V

V/µs

µs

%

MHz

%

nV

√Hz

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