LM146/LM346
Programmable Quad Operational Amplifiers

General Description

The LM146 series of quad op amps consists of four indepen-
dent, high gain, internally compensated, low power, pro-
grammable amplifiers. Two external resistors (R

SET

) allow

the user to program the gain bandwidth product, slew rate,
supply current, input bias current, input offset current and in-
put noise. For example, the user can trade-off supply current
for bandwidth or optimize noise figure for a given source re-
sistance. In a similar way, other amplifier characteristics can
be tailored to the application. Except for the two program-
ming pins at the end of the package, the LM146 pin-out is
the same as the LM124 and LM148.

Features

SET

=10 µA)

Programmable electrical characteristics

Battery-powered operation

Low supply current:

350 µA/amplifier

Guaranteed gain bandwidth product:

0.8 MHz min

Large DC voltage gain:

120 dB

Low noise voltage:

Wide power supply range:

1.5V to

22V

Class AB output stageno crossover distortion

Ideal pin out for Biquad active filters

Input bias currents are temperature compensated

Connection Diagram

PROGRAMMING EQUATIONS

Total Supply Current = 1.4 mA (I

SET

/10 µA)

Gain Bandwidth Product = 1 MHz (I

SET

/10 µA)

Slew Rate = 0.4V/µs (I

SET

/10 µA)

Input Bias Current

50 nA (I

SET

/10 µA)

SET

= Current into pin 8, pin 9 (see schematic-diagram)

Dual-In-Line Package

DS005654-1

Top View

Order Number LM146J, LM146J/883,

LM346M or LM346N

See NS Package Number

J16A, M16A or N16A

May 1999

LM146/LM346

Programmable

Quad

Operational

Amplifiers

DS005654

www.national.com

Absolute Maximum Ratings

(Notes 1, 5)

If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.

LM146

LM346

Supply Voltage

22V

18V

Differential Input Voltage (Note 1)

30V

CM Input Voltage (Note 1)

15V

Power Dissipation (Note 2)

900 mW

500 mW

Output Short-Circuit Duration (Note 3)

Continuous

Operating Temperature Range

-55°C to +125°C

0°C to +70°C

Maximum Junction Temperature

150°C

100°C

Storage Temperature Range

-65°C to +150°C

Lead Temperature (Soldering, 10 seconds)

260°C

Thermal Resistance (

), (Note 2)

Cavity DIP (J)

900 mW

100°C/W

Small Outline (M)

115°C/W

Molded DIP (N)

500 mW

90°C/W

Soldering Information

Dual-In-Line Package

Soldering (10 seconds)

+260°C

Small Outline Package

Vapor Phase (60 seconds)

+215°C

Infrared (15 seconds)

+220°C

See AN-450 "Surface Mounting Methods and Their Effect on Product Reliability" for other methods of soldering surface mount de-
vices.

ESD rating is to be determined.

DC Electrical Characteristics

15V, I

SET

=10 µA), (Note 4)

Parameter

Conditions

LM146

LM346

Units

Min

Typ

Max

Min

Typ

Max

Input Offset Voltage

=0V, R

, T

=25°C

0.5

Input Offset Current

=0V, T

=25°C

100

Input Bias Current

=0V, T

=25°C

100

250

Supply Current (4 Op Amps)

=25°C

1.4

2.0

1.4

2.5

Large Signal Voltage Gain

=10 k

OUT

10V,

100

1000

V/mV

=25°C

Input CM Range

=25°C

13.5

CM Rejection Ratio

10 k

, T

=25°C

100

Power Supply Rejection Ratio

10 k

, T

=25°C,

100

5 to

15V

Output Voltage Swing

10 k

, T

=25°C

Short-Circuit

=25°C

Gain Bandwidth Product

=25°C

0.8

1.2

0.5

1.2

MHz

Phase Margin

=25°C

Deg

Slew Rate

=25°C

0.4

V/µs

Input Noise Voltage

f=1 kHz, T

=25°C

Channel Separation

=10 k

OUT

=0V to

120

12V, T

=25°C

Input Resistance

=25°C

1.0

Input Capacitance

=25°C

2.0

Input Offset Voltage

=0V, R

0.5

7.5

www.national.com

DC Electrical Characteristics

(Continued)

15V, I

SET

=10 µA), (Note 4)

Parameter

Conditions

LM146

LM346

Units

Min

Typ

Max

Min

Typ

Max

Input Offset Current

=0V

100

Input Bias Current

=0V

100

250

Supply Current (4 Op Amps)

1.7

2.2

1.7

2.5

Large Signal Voltage Gain

=10 k

OUT

10V

1000

V/mV

Input CM Range

13.5

CM Rejection Ratio

100

Power Supply Rejection Ratio

100

5V to

15V

Output Voltage Swing

10 k

DC Electrical Characteristic

15V, I

SET

=10 µA)

Parameter

Conditions

LM146

LM346

Units

Min

Typ

Max

Min

Typ

Max

Input Offset Voltage

=0V, R

0.5

=25°C

Input Bias Current

=0V, T

=25°C

7.5

100

Supply Current (4 Op Amps)

=25°C

140

250

140

300

µA

Gain Bandwidth Product

=25°C

100

kHz

DC Electrical Characteristics

1.5V, I

SET

=10 µA)

Parameter

Conditions

LM146

LM346

Units

Min

Typ

Max

Min

Typ

Max

Input Offset Voltage

=0V, R

0.5

=25°C

Input CM Range

=25°C

0.7

CM Rejection Ratio

, T

=25°C

Output Voltage Swing

10 k

, T

=25°C

0.6

Note 1: For supply voltages less than

15V, the absolute maximum input voltage is equal to the supply voltage.

Note 2: The maximum power dissipation for these devices must be derated at elevated temperatures and is dictated by T

jMAX

, and the ambient temperature,

. The maximum available power dissipation at any temperature is P

=(T

jMAX

- T

or the 25°C P

dMAX

, whichever is less.

Note 3: Any of the amplifier outputs can be shorted to ground indefinitely; however, more than one should not be simultaneously shorted as the maximum junction
temperature will be exceeded.

Note 4: These specifications apply over the absolute maximum operating temperature range unless otherwise noted.

Note 5: Refer to RETS146X for LM146J military specifications.

Part Number LM346