Datasheet LM346D, LM346, LM346N, LM246, LM146 Datasheet (SGS Thomson Microelectronics)

November1997

PROGR AMMABL E

QUAD BIPOLAR OPERAT ION AL AMPL IFI ERS

.PROGRAMMABLE ELECTRICAL CHARAC-

TERISTICS

.BATTERYPOWEREDOPERATION

.LOW SUPPLY CURRENT (250µA/amplifier)

.GAIN-BANDWIDTH PRODUCT: 1MHz

.LARGEDC VOLTAGEGAIN : 120dB

.LOW NOISEVOLTAGE: 28nV/VHz

.WIDE POWERSUPPLYRANGE:

±1.5Vto

±22V

.CLASSE AB OUTPUT STAGE. NO CROSS-

OVERDISTORTION

.OVERLOADPROTECTION FOR INPUTS AND

OUTPUTS

DESC RIP TI ON

The LM346consistsof fourindependent,highgain,
internallycompensated,low power programmable
amplifiers. Two external resistors (R

set

) allow the
user to program the gain-bandwith product, slew
rate,supply current,inputbias current,input offset
currentand input noise. For example the user can
trade-off supply current for bandwidth or optimize
noisefigurefora givensource resistance.In a simi­lar wayother amplifiercharacteristicscanbe
tailoredto theapplication.

Exceptfor thetwo programming pins at the end of
the packagethe LM346pin out is the sameas the
LM324and LM348.

PROGRAMMINGEQUATIONS:
Totalsupplycurrent= 1mA(I

set

=10µA)

Gain-bandwidthproduct = 1MHz (I

set

=10µA)

Slewrate = 0.5V/µs(I

set

=10µA)

Inputbias current ≈30 nA (I

set

=10µA)

I

set

=currentinto pin8 and pin 9

(see schematicdiagram)

I

set

=

V

CC

+

− V

CC

−

− 0.6V

R

set

4

5

6

7

9

10

11

12

13

15

1

2

3

8

16

14

Output1

Invertinginput 1

Non-invertinginput1

Non-invertinginput 2

Invertinginput 2

Output2

Set

Output4

Invertinginput 4

Non-invertinginput 4

V

CC

Non-invertinginput 3

Invertinginput 3

Output3

Set

V

CC

+

PIN C O NNEC TIO NS (top view)

ORDER CODES

Part

Number

Temperature

Range

Package

ND

LM146 –55

o

C, +125oC ••

LM246 –40

o

C, +105oC ••

LM346 0

o

C, +70oC ••

Example : LM246N

N

DIP16

(PlasticPackage)

D

SO16

(PlasticMicropackage)

LM146

LM246 - LM346

1/9

Notes : 1. For supply volt ages less than ±15V, the absolute maxi mum i nput voltage is equal t o the s upply vol tage.

2. Any of the ampl ifier output s can be shorted t o g r ound indefi nitly ; howev e r m or e t han one should n ot be
simul t aneous l y shorted as the maximum junction temperat ur e wi ll be exceeded.

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter LM146 LM246 LM346 Unit

V

CC

Supply Voltage ±22 ±22 ±22

V

V

i

Input Voltage - (note 1) ±15 ±15 ±15 V

V

id

Differential Input Voltage ±30 ±30 ±30 V
Output Short-circuit Duration - (note 2) Infinite

P

tot

Power Dissipation

N/D Suffix 500

mW

T

oper

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

o

C

T

stg

Storage Temperature Range –65 to +150 –65 to +150 –65 to +150

o

C

V

CC

V

CC

V

CC

or

Q18 Q19

Toother op amps

V

CCVCC

Output

R

set

R

set

I

set

I

set

SET

SET

R1

30Ω

Q12

Q10

Q11

Q9

Q16

Q15

Q14

Q13

8pF

C

C

Non-

inverting

input

Q20

Q6

Q8

Q5

R2

1kΩ

Q7Q21

Q4

Q3

Q17

V

CC

V

CC

Q1 Q2

Inverting

input

SCHE MATIC DIAGRAM ( 1/4 LM146)

LM146 - LM246 - LM346

2/9

ELECTRICAL CHARACTERISTICS

V

CC

= ±15V, I

set

=10µA, T

amb

= +25oC (unlessotherwise specified)

Symbol Parameter

LM146 LM246 - LM346

Unit

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

V

io

Input Offset Voltage (RS≤ 10kΩ)

T

amb

=25oC

T

min

. ≤ T

amb

≤ T

max.

0.5 3
5

0.5 5
6

mV

I

io

Input Offset Current

T

amb

=25oC

T

min

. ≤ T

amb

≤ T

max.

220

25

2 100

100

nA

I

ib

Input Bias Current

T

amb

=25oC

T

min

. ≤ T

amb

≤ T

max.

30 100

100

30 250

250

nA

A

vd

Large Signal Voltage Gain
(V

o

= ±10V, RL= 10kΩ)

T

amb

=25oC

T

min

. ≤ T

amb

≤ T

max.

100501000 50251000

V/mV

SVR Supply Voltage Rejection Ratio (R

S

≤ 10kΩ)

T

amb

=25oC

T

min

. ≤ T

amb

≤ T

max.

8080110 8080110

dB

I

CC

Supply Current, all Amp, no Load

T

amb

=25oC

T

min

. ≤ T

amb

≤ T

max.

12

2

12

2

mA

V

icm

Input Common Mode Voltage Range

T

amb

=25oC

T

min

. ≤ T

amb

≤ T

max.

±13.5
±13.5

±13.5
±13.5

V

CMR Common Mode Rejection Ratio (R

S

≤ 10kΩ)

T

amb

=25oC

T

min

. ≤ T

amb

≤ T

max.

8070110 8070110

dB

I

OS

Output Short-circuit Current

T

amb

=25oC

T

min

. ≤ T

amb

≤ T

max.

10

4

20 30

35

10

4

20 30

35

mA

± V

opp

Output Voltage Swing (RL= 10kΩ)

T

amb

=25oC

T

min

. ≤ T

amb

≤ T

max.

12
12

14 12

12

14

V

SR Slew Rate (V

I

= ±10V, RL= 10kΩ,CL= 100pF,

unity Gain) 0.3 0.5 0.3 0.5

V/µs

R

I

Input Resistance 1 1 MΩ

C

I

Input Capacitance 2 2 pF

V

o1/Vo2

Channel Separation (RL= 10kΩ,Vo= 12Vpp) 120 120 dB

GBP Gain Bandwidth Product

(V

I

= 10 mV, RL= 10kΩ,CL= 100pF

f = 100kHz) 0.8 1 0.5 1

MHz

THD Total Harmonic Distortion

(f = 1kHz, A

v

= 20dB, RL= 10kΩ

C

L

= 100pF, vo=2Vpp) 0.015 0.015

%

e

n

Equivalent Input Noise Voltage
(f = 1kHz, R

s

= 100Ω)

28 28

nV

√Hz

LM146 - LM246 - LM346

3/9

LM146 - LM246 - LM346

4/9

LM146 - LM246 - LM346

5/9

LM146 - LM246 - LM346

6/9

50

0

-50

50

-50

0

INPUT (mV) OUTPUT (mV)

0

1

2345

TIME ( µs)

=10µAI

set

=+25°CT

amb

V

CC

=15V

= 10kΩ

R

L

= 100pF

C

L

VOLTAGE FO L LOWE R TRANSIENT
RESPONSE

1/4

LM146

G

e

I

C

L

L

R

TRANSIENT RESPONSE TEST CIRCUIT

LM146 - LM246 - LM346

7/9

PM-DIP16.EPS

PACKAGE MECHANICAL DATA

16 PINS - PLASTI C DI P

Dimensions

Millimeters Inches

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

a1 0.51 0.020

B 0.77 1.65 0.030 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 17.78 0.700

F 7.1 0.280

i 5.1 0.201
L 3.3 0.130
Z 1.27 0.050

DIP16.TBL

LM146 - LM246 - LM346

8/9

PM-SO16.EPS

PACKAGE MECHANICAL DATA

16 PI NS - PLAS TI C MICROPA CKA G E (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

o

(typ.)
D 9.8 10 0.386 0.394
E 5.8 6.2 0.228 0.244
e 1.27 0.050

e3 8.89 0.350

F 3.8 4.0 0.150 0.157
G 4.6 5.3 0.181 0.209

SO16.TBL

Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics 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 license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON
Microelectronics. Specification mentioned in this publication are subject to change without notice. This publication supersedes
and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical
components in life support devices or systems without express written approval of SGS-THOMSON Microelectronics.

 1997 SGS-THOMSON Microelectronics – Printed in Italy – All Rights Reserved

SGS-THOMSON Microelectronics GROUP OF COMPANIES

Australia - Brazil - Canada - China - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco

The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A.

ORDERCODE :

LM146 - LM246 - LM346

9/9