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

3/9