ST LM146, LM246, LM346 User Manual

查询LM146供应商

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:

±22V

±1.5Vto

.CLASSE AB OUTPUT STAGE. NO CROSS-

OVERDISTORTION

.OVERLOADPROTECTION FOR INPUTS AND

OUTPUTS

LM246 - LM346

PROGR AMMABL E

N

DIP16

(PlasticPackage)

LM146

D

SO16

(PlasticMicropackage)

DESC RIP TI ON

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

Gain-bandwidthproduct = 1MHz (I
Slewrate = 0.5V/µs(I
Inputbias current ≈30 nA (I
I

=currentinto pin8 and pin 9

set

(see schematicdiagram)

+

V

− V

set

CC

=

I

CC

R

set

set

−

− 0.6V

=10µA)

set

=10µA)

set

=10µA)

set

=10µA)

set

) allow the

ORDER CODES

Part

Number

LM146 –55
LM246 –40
LM346 0

Example : LM246N

PIN C O NNEC TIO NS (top view)

Output1

Invertinginput 1

Non-invertinginput1

V

CC

Non-invertinginput 2

Invertinginput 2

Output2

1

2

3

+

4

5

6

7

8

Set

Temperature

Range

o

C, +125oC ••

o

C, +105oC ••

o

C, +70oC ••

Package

ND

Output4

16

Invertinginput 4

15

Non-invertinginput 4

14

V

13

CC

Non-invertinginput 3

12

11

Invertinginput 3

10

Output3

Set

9

November1997

1/9

SCHE MATIC DIAGRAM ( 1/4 LM146)

Q16

Q15

LM146 - LM246 - LM346

V

CC

Q17

Inverting

input

Q1 Q2

V

V

CC

CC

Q3

Q4

Q5

Non-

inverting

input

C
8pF

Q10

Q12

Q14

R2

1kΩ

Q11

Q9

Q18 Q19

C

Q13

Q6

Q20

Q8

Q7Q21

30Ω

R

I

SET

R1

set

set

V

CCVCC

V

CC

Output

R

set

Toother op amps

I

set

SET

or

V

CC

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter LM146 LM246 LM346 Unit

V

T

T

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.

Supply Voltage ±22 ±22 ±22

CC

V

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

i

V

Differential Input Voltage ±30 ±30 ±30 V

id

Output Short-circuit Duration - (note 2) Infinite

P

Power Dissipation

tot

oper

stg

N/D Suffix 500
Operating Free-air Temperature Range –55 to +125 –40 to +105 0 to +70
Storage Temperature Range –65 to +150 –65 to +150 –65 to +150

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.

mW

V

o

C

o

C

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LM146 - LM246 - LM346

ELECTRICAL CHARACTERISTICS

= ±15V, I

V

CC

Symbol Parameter

Input Offset Voltage (RS≤ 10kΩ)

V

io

Input Offset Current

I

io

Input Bias Current

I

ib

Large Signal Voltage Gain

A

vd

(V

SVR Supply Voltage Rejection Ratio (R

I

Supply Current, all Amp, no Load

CC

V

Input Common Mode Voltage Range

icm

CMR Common Mode Rejection Ratio (R

I

Output Short-circuit Current

OS

± V

Output Voltage Swing (RL= 10kΩ)

opp

SR Slew Rate (V

unity Gain) 0.3 0.5 0.3 0.5

R

Input Resistance 1 1 MΩ

I

C

Input Capacitance 2 2 pF

I

V

o1/Vo2

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

GBP Gain Bandwidth Product

(V
f = 100kHz) 0.8 1 0.5 1

=10µA, T

set

=25oC

T

amb

. ≤ T

T

min

T

amb

. ≤ T

T

min

T

amb

. ≤ T

T

min

= ±10V, RL= 10kΩ)

o

T

amb

. ≤ T

T

min

T

amb

. ≤ T

T

min

T

amb

. ≤ T

T

min

T

amb

. ≤ T

T

min

T

amb

. ≤ T

T

min

T

amb

. ≤ T

T

min

T

amb

. ≤ T

T

min

= 10 mV, RL= 10kΩ,CL= 100pF

I

≤ T

amb

=25oC

≤ T

amb

=25oC

≤ T

amb

=25oC

≤ T

amb

=25oC

≤ T

amb

=25oC

≤ T

amb

=25oC

≤ T

amb

=25oC

≤ T

amb

=25oC

≤ T

amb

=25oC

≤ T

amb

= ±10V, RL= 10kΩ,CL= 100pF,

I

= +25oC (unlessotherwise specified)

amb

max.

max.

max.

max.

max.

max.

max.

max.

max.

max.

≤ 10kΩ)

S

≤ 10kΩ)

S

LM146 LM246 - LM346

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

0.5 3
5

220

25

30 100

100

0.5 5
6

2 100

100

30 250

250

100501000 50251000

8080110 8080110

±13.5
±13.5

12

2

±13.5
±13.5

12

2

8070110 8070110

10

12
12

20 30

4

14 12

35

10

12

4

20 30

35

14

Unit

mV

nA

nA

V/mV

dB

mA

V

dB

mA

V

V/µs

MHz

THD Total Harmonic Distortion

(f = 1kHz, A

= 100pF, vo=2Vpp) 0.015 0.015

C

L

Equivalent Input Noise Voltage

e

n

(f = 1kHz, R

= 20dB, RL= 10kΩ

v

= 100Ω)

s

28 28

%

nV

√Hz

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LM146 - LM246 - LM346

4/9

LM146 - LM246 - LM346

5/9

LM146 - LM246 - LM346

6/9

LM146 - LM246 - LM346

VOLTAGE FO L LOWE R TRANSIENT
RESPONSE

INPUT (mV) OUTPUT (mV)

-50

-50

50

0

50

0

0

2345

1

TIME ( µs)

set

V

CC

amb

C
R

=10µAI

=15V

=+25°CT

= 100pF

L

= 10kΩ

L

TRANSIENT RESPONSE TEST CIRCUIT

e

G

I

1/4

LM146

R

L

C

L

7/9

PACKAGE MECHANICAL DATA

16 PINS - PLASTI C DI P

LM146 - LM246 - LM346

Dimensions

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

Millimeters Inches

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

PM-DIP16.EPS

DIP16.TBL

8/9

LM146 - LM246 - LM346

PACKAGE MECHANICAL DATA

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

Dimensions

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

Millimeters Inches

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

o

c1 45

(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

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.

PM-SO16.EPS

SO16.TBL

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

SGS-THOMSON Microelectronics GROUP OF COMPANIES

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