NSC LPC662IN, LPC662AIN Datasheet

LPC662
Low Power CMOS Dual Operational Amplifier

General Description

The LPC662 CMOS Dual operational amplifier is ideal for
operation from a single supply. It features a wide range of
operating voltage from +5V to +15V, rail-to-rail output swing
in addition to an input common-mode range that includes
ground. Performance limitations that have plagued CMOS
amplifiers in the past are not a problem with this design.
Input V
(into 100 kΩ and5kΩ) are all equal to or better than widely
accepted bipolar equivalents, while the power supply
requirement is typically less than 0.5 mW.

This chip is built with National’s advanced Double-Poly
Silicon-Gate CMOS process.

See the LPC660 datasheet for a Quad CMOS operational
amplifier and LPC661 for a single CMOS operational
amplifier with these same features.

, drift, and broadband noise as well as voltage gain

OS

Applications

n High-impedance buffer
n Precision current-to-voltage converter

n Long-term integrator
n High-impedance preamplifier
n Active filter
n Sample-and-Hold circuit
n Peak detector

Features

n Rail-to-rail output swing
n Micropower operation (
n Specified for 100 kΩ and5kΩloads
n High voltage gain 120 dB
n Low input offset voltage 3 mV
n Low offset voltage drift 1.3 µV/˚C
n Ultra low input bias current 2 fA
n Input common-mode includes GND
n Operating range from +5V to +15V
n Low distortion 0.01% at 1 kHz
n Slew rate 0.11 V/µs
n Full military temperature range available

<

0.5 mW)

LPC662 Low Power CMOS Dual Operational Amplifier

August 2000

Application Circuit

Howland Current Pump

DS010548-23

© 2001 National Semiconductor Corporation DS010548 www.national.com

Absolute Maximum Ratings (Note 3)

If Military/Aerospace specified devices are required,

LPC662

please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.

Differential Input Voltage

+−V−

Supply Voltage (V
Output Short Circuit to V
Output Short Circuit to V

) 16V

+

−

Lead Temperature

(Soldering, 10 sec.) 260˚C
Storage Temp. Range −65˚C to +150˚C
Junction Temperature 150˚C
ESD Rating

(C = 100 pF, R = 1.5 kΩ) 1000V
Power Dissipation (Note 2)
Current at Input Pin
Current at Output Pin

±

Supply Voltage

(Note 11)

(Note 1)

±

5mA

±

18 mA

Current at Power Supply Pin 35 mA

+

Voltage at Input/Output Pin (V

) + 0.3V, (V−) −0.3V

Operating Ratings (Note 3)

Temperature Range

LPC662AMJ/883 −55˚C ≤ T
LPC662AM −55˚C ≤ T
LPC662AI −40˚C ≤ T

LPC662I −40˚C ≤ T
Supply Range 4.75V to 15.5V
Power Dissipation (Note 9)

Thermal Resistance (θ

) (Note 10)

JA

8-Pin Ceramic DIP 100˚C/W

8-Pin Molded DIP 101˚C/W

8-Pin SO 165˚C/W

8-Pin Side Brazed Ceramic DIP 100˚C/W

≤ +125˚C

J

≤ +125˚C

J

≤ +85˚C

J

≤ +85˚C

J

DC Electrical Characteristics

Unless otherwise specified, all limits guaranteed for TJ= 25˚C. Boldface limits apply at the temperature extremes. V+= 5V, V
= 0V, VCM= 1.5V, VO= 2.5V and R

Parameter Conditions Typ LPC662AMJ/883 Limit Limit Units

Input Offset Voltage 1 3 3 6 mV

Input Offset Voltage 1.3 µV/˚C
Average Drift
Input Bias Current 0.002 20 pA

Input Offset Current 0.001 20 pA

Input Resistance
Common Mode 0V ≤ V
Rejection Ratio V

+

= 15V 68 68 61 min
Positive Power Supply 5V ≤ V
Rejection Ratio V

O

Negative Power Supply 0V ≤ V
Rejection Ratio 82 83 73 min
Input Common-Mode V

+

= 5V and 15V −0.4 −0.1 −0.1 −0.1 V
Voltage Range For CMRR ≥ 50 dB 000max

Large Signal R

= 100 kΩ (Note 5) 1000 400 400 300 V/mV

L

Voltage Gain Sourcing 250 300 200 min

Sinking 500 180 180 90 V/mV

R

=5kΩ(Note 5) 1000 200 200 100 V/mV

L

Sourcing 150 160 80 min
Sinking 250 100 100 50 V/mV

>

1M unless otherwise specified.

L

LPC662AM LPC662AI LPC662I

Limit (Note 4) (Note 4)

(Notes 4, 8)

3.5 3.3 6.3 max

100 4 4 max

100 2 2 max

>

1 Tera Ω

≤ 12.0V 83 70 70 63 dB

CM

+

≤ 15V 83 70 70 63 dB

= 2.5V 68 68 61 min

−

≤ −10V 94 84 84 74 dB

+

V

− 1.9 V+− 2.3 V+− 2.3 V+− 2.3 V

+

V

− 2.6 V+− 2.5 V+− 2.5 min

70 120 70 min

35 60 40 min

−

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DC Electrical Characteristics (Continued)

Unless otherwise specified, all limits guaranteed for TJ= 25˚C. Boldface limits apply at the temperature extremes. V+= 5V, V
= 0V, VCM= 1.5V, VO= 2.5V and R

Parameter Conditions Typ LPC662AMJ/883 Limit Limit Units

+

Output Swing V

= 5V 4.987 4.970 4.970 4.940 V

R

= 100 kΩ to V+/2 4.950 4.950 4.910 min

L

+

V

= 5V 4.940 4.850 4.850 4.750 V

R

=5kΩto V+/2 4.750 4.750 4.650 min

L

+

V

= 15V 14.970 14.920 14.920 14.880 V

R

= 100 kΩ to V+/2 14.880 14.880 14.820 min

L

+

V

= 15V 14.840 14.680 14.680 14.580 V

R

=5kΩto V+/2 14.600 14.600 14.480 min

L

Output Current Sourcing, V

+

V

=5V 12 14 11 min

Sinking, V

Output Current Sourcing, V

+

V

= 15V 19 25 20 min

Sinking, V
(Note 11) 19 24 19 min

Supply Current Both Amplifiers 86 120 120 140 µA

V

O

>

1M unless otherwise specified.

L

LPC662AM LPC662AI LPC662I

Limit (Note 4) (Note 4)

(Notes 4, 8)

0.004 0.030 0.030 0.060 V

0.050 0.050 0.090 max

0.040 0.150 0.150 0.250 V

0.250 0.250 0.350 max

0.007 0.030 0.030 0.060 V

0.050 0.050 0.090 max

0.110 0.220 0.220 0.320 V

0.300 0.300 0.400 max

=0V 22161613mA

O

=5V 21161613mA

O

12 14 11 min

=0V 40192823mA

O

= 13V 39 19 28 23 mA

O

= 1.5V 145 140 160 max

LPC662

−

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AC Electrical Characteristics

Unless otherwise specified, all limits guaranteed for TJ= 25˚C. Boldface limits apply at the temperature extremes. V+= 5V, V

LPC662

= 0V, VCM= 1.5V, VO= 2.5V and R

Parameter Conditions Typ LPC662AMJ/883 Limit Limit Units

Slew Rate (Note 6) 0.11 0.07 0.07 0.05 V/µs

Gain-Bandwidth Product 0.35 MHz
Phase Margin 50 Deg
Gain Margin 17 dB
Amp-to-Amp Isolation (Note 7) 130 dB
Input Referred Voltage Noise F = 1 kHz 42

Input Referred Current Noise F = 1 kHz 0.0002

Total Harmonic Distortion F = 1 kHz, AV= −10, V+= 15V 0.01 %

R

Note 1: Applies to both single supply and split supply operation. Continuous short circuit operation at elevated ambient temperature and/or multiple Op Amp shorts
can result in exceeding the maximum allowed junction temperature of 150˚C. Output currents in excess of

Note 2: The maximum power dissipation is a function of T

−TA)/θJA.
Note 3: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is

intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The
guaranteed specifications apply only for the test conditions listed.

Note 4: Limits are guaranteed by testing or correlation.
Note 5: V
Note 6: V
Note 7: Input referred. V
Note 8: A military RETS electrical test specification is available on request. At the time of printing, the LPC662AMJ/883 RETS specification complied fully with the

boldface limits in this column. The LPC662AMJ/883 may also be procured to a Standard Military Drawing specification.
Note 9: For operating at elevated temperatures the device must be derated based on the thermal resistance θ
Note 10: All numbers apply for packages soldered directly into a PC board.
Note 11: Do not connect output to V

+

= 15V, VCM= 7.5V and RLconnected to 7.5V. For Sourcing tests, 7.5V ≤ VO≤ 11.5V. For Sinking tests, 2.5V ≤ VO≤ 7.5V.

+

= 15V. Connected as Voltage Follower with 10V step input. Number specified is the slower of the positive and negative slew rates.

+

= 15V and RL= 100 kΩ connected to V+/2. Each amp excited in turn with 1 kHz to produce VO=13VPP.

+

when V+is greater than 13V or reliability may be adversely affected.

>

1M unless otherwise specified.

L

= 100 kΩ,VO=8V

L

J(max)

LPC662AM LPC662AI LPC662I

Limit (Note 4) (Note 4)

(Notes 4, 8)

0.04 0.05 0.03 min

PP

±

30 mA over long term may adversely affect reliability.

, θJA, and TA. The maximum allowable power dissipation of any ambient temperature is PD=(T

with PD=(TJ−TA)/θJA.

JA

−

J(max)

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LPC662

Typical Performance Characteristics V

Supply Current vs
Supply Voltage

DS010548-28

Input Common-Mode
Voltage Range vs
Temperature

=±7.5V, TA= 25˚C unless otherwise specified

S

Input Bias Current
vs Temperature

Output Characteristics
Current Sinking

DS010548-29

Output Characteristics
Current Sourcing

DS010548-30

DS010548-32

DS010548-31

Input Voltage Noise
vs Frequency

DS010548-33

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Typical Performance Characteristics V

LPC662

Crosstalk Rejection
vs Frequency

=±7.5V, TA= 25˚C unless otherwise specified (Continued)

S

CMRR vs Frequency

CMRR vs Temperature

Open-Loop
Frequency Response

DS010548-34

DS010548-36

DS010548-35

Open-Loop Voltage Gain
vs Temperature

DS010548-38

Gain and Phase Responses
vs Load Capacitance

DS010548-39

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DS010548-40