Analog Devices OP420 a Datasheet

Quad Micropower

9 10 11 12 13

+IN1

NC

V+

NC

+IN2

+IN4

NC

V–

NC

+IN3

–IN1

OUT1NCOUT4

–IN4

–IN2

OUT2NCOUT3

–IN3

3 2 1 20 19

4

5

6

7

8

18

17

16

15

14

a

FEATURES
Low Supply Current: 200 ␮A Max @ V
Single-Supply Operation: 5 V to 30 V
Dual-Supply Operation: 2.5 V to 15 V
Low Input Offset Voltage: 500 ␮V Typ
Low Input Offset Voltage Drift: 5 ␮V/ⴗC Typ
High Common-Mode Input Range: V– to (V+ – 1.5 V)
High CMRR: 100 dB Typ
High Open-Loop Gain: 1100 V/mV Typ
LM 148 Pinout

GENERAL DESCRIPTION

The OP420 quad micropower operational amplifier is a single­chip quad patterned after the OP20 precision micropower single
operational amplifier. A Darlington PNP input stage allows the
input common-mode voltage to include V–. The wide input
range combined with low power supply drain (~40 µA/section at
5 V) provides a unique solution for designs requiring high func­tional density and portable operation. Applications include
2-wire transmitters for process control loops, battery-operated
remote-line filters, signal preconditioning amplifiers, and a
variety of multiple-gain block arrays.

= 5 V

S

Operational Amplifier

PIN CONNECTIONS

1

OUT 1

–IN 1

+IN 1

+IN 2

–IN 2

OUT 2

+

2

3

4

V+

5

6

+

7

14-Pin Hermetic DIP

(Y-Suffix)

14-Pin Epoxy DIP

(P-Suffix)

14

+

13

12

11

10

9

+

8

OUT 4

–IN 4

+IN 4

V–

+IN 3

–IN 3

OUT 3

OUT A

–IN A

+IN A

V+

+IN B

–IN B

OUT B

N.C.

OP420

1

+

2

3

4

5

6

7

16-Pin SOL

+

+

+

(S-Suffix)

16

15

14

13

12

11

10

98

OUT D

–IN D

+IN D

V–

+IN C

–IN C

OUT C

N.C.

–IN

–IN

REV. A

Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.

Q1

OP420CRC/883

20-Lead LCC

(RC-Suffix)

V+

Q11

Q28

OUTPUT

Q29

V–

C1

Q3 Q4

Q5

Q6

Q2

Q7

Q9

Q13

Q10

Q12

Q8

Q26

Q27

Q33

Figure 1. Simplified Schematic (1/4 Shown)

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone] www.analog.com
Fax: [phone] © Analog Devices, Inc., 2002

OP420–SPECIFICATIONS

ELECTRICAL CHARACTERISTICS

(VS = ⴞ15 V, TA = 25ⴗC, unless otherwise noted.)

OP420C
OP420G

Parameter Symbol Conditions Min Typ Max Unit

INPUT OFFSET VOLTAGE V

OS

VS = ±2.5 V to ±15 V 1 4 mV

INPUT OFFSET
CURRENT* I

INPUT BIAS CURRENT* I

OS

B

VS = ±2.5 V to ±15 V 0.8 2.5 nA

VS = ±2.5 V to ±15 V 12 30 nA

INPUT NOISE VOLTAGE
DENSITY e

n

fO = 10 Hz 50 nV/√Hz
fO = 100 Hz 50 nV/√Hz

INPUT NOISE CURRENT
DENSITY i

n

fO = 10 Hz 0.12 pA/√Hz
fO = 100 Hz 0.12 pA/√Hz

INPUT VOLTAGE RANGE IVR V+ = 5 V, V– = 0 V 0/3.5 V

VS = ±15 V –15/13.5 V

COMMON-MODE CMRR V+ = 5 V, V– = 0 V

REJECTION RATIO 0 V ≤ VCM ≤ 3.5 V 80 96 dB

V

= ±15 V

S

POWER SUPPLY PSRR V

–15 V ≤ V

= ±2.5 V to ± 15 V,

S

≤ 13.5 V 80 96 dB

CM

REJECTION RATIO V– = 0 V, V+ = 5 V to 30 V 20 50 µV/V

LARGE SIGNAL VOLTAGE
GAIN A

VO

RL = 25 kΩ,
VO = ±10 V 400 900 V/mV

SLEW RATE SR 0.05 V/µs

CLOSED-LOOP
BANDWIDTH BW A

= 1.0 150 kHz

VCL

RL = 10 kΩ 150 kHz

OUTPUT VOLTAGE
SWING V

O

V+ = 5 V, V– = 0 V,

= 10 kΩ 0.8/4.0 V

R

L

V

= ±15 V

S

RL = 25 kΩ±14.0 V

SUPPLY CURRENT I

SY

VS = ±2.5 V, No Load — 170 300 µA

(Four Amplifiers) VS = ±15 V, No Load 360 460 µA

NOTE
*IOS and IB are measured at V

Specifications subject to change without notice.

CM

= 0°.

–2–

REV. A

OP420

(VS = ⴞ15 V, –55ⴗC ⱕ +125ⴗC for OP420C, –40ⴗC ⱕ TA ⱕ +85ⴗC for OP420G, unless

ELECTRICAL CHARACTERISTICS

Parameter Symbol Conditions Min Typ Max Unit

AVERAGE INPUT OFFSET

Voltage Drift

INPUT OFFSET

VOLTAGE V

INPUT OFFSET

CURRENT

INPUT BIAS CURRENT2I

INPUT VOLTAGE RANGE IVR V+ = 5 V, V– = 0 V 0/3.2 V

COMMON-MODE CMRR V+ = 5 V, V– = 0 V,

Rejection Ratio 0 V ≤ V

POWER SUPPLY PSRR V

Rejection Ratio V– = 0 V, V+ = 5 V to 30 V 25 80 µV/V

LARGE-SIGNAL
VOLTAGE GAIN A

OUTPUT VOLTAGE
SWING V

SUPPLY CURRENT I

(Four Amplifiers) VS = ±15 V, No Load 420 640 µA

NOTES

1

Sample tested.

2

IOS and IB are measured at VCM = 0°.

1

2

TCV

OS

I

OS

B

VO

O

SY

OS

otherwise noted.)

OP420C/OP420G

Unnulled 8 15 µV°C

VS = ±2.5 V to ±15 V 5.5 mV

VS = ±2.5 V to ±15 V 4 nA

VS = ±2.5 V to ±15 V 40 nA

VS = ±15 V –15/13.2 V

≤ 3.2 V 73 92 dB

CM

V

= ±15 V

S

–15 V ≤ VCM ≤ 13.2 V 73 92 dB

= ±2.5 V to ±15 V,

S

VS = ±15 V, RL = 50 kΩ,
VO = 10 V 200 650 V/mV

V+ = 5 V, V– = 0 V,
R

= 20 kΩ 1.0/3.8 V

L

= ±15 V,

V

S

RL = 50 kΩ±13.8 V

VS = ±2.5 V, No Load 210 400 µA

REV. A

–3–