Analog Devices OP27 c Datasheet

Low-Noise, Precision

a

FEATURES

÷

Low Noise: 80 nV p-p (0.1 Hz to 10 Hz), 3 nV/
Low Drift: 0.2 V/C
High Speed: 2.8 V/s Slew Rate, 8 MHz Gain

Bandwidth
Low V
Excellent CMRR: 126 dB at V

: 10 V

OS

of ±11 V

CM

High Open-Loop Gain: 1.8 Million
Fits 725, OP07, 5534A Sockets
Available in Die Form

GENERAL DESCRIPTION

The OP27 precision operational amplifier combines the low
offset and drift of the OP07 with both high speed and low noise.
Offsets down to 25 mV and maximum drift of 0.6 mV/∞C, makes
the OP27 ideal for precision instrumentation applications.
Exceptionally low noise, e

= 3.5 nV/÷Hz, at 10 Hz, a low 1/f

n

noise corner frequency of 2.7 Hz, and high gain (1.8 million),
allow accurate high-gain amplification of low-level signals. A
gain-bandwidth product of 8 MHz and a 2.8 V/msec slew rate
provides excellent dynamic accuracy in high-speed, data­acquisition systems.

A low input bias current of ±10 nA is achieved by use of a
bias-current-cancellation circuit. Over the military temperature
range, this circuit typically holds I

and IOS to ±20 nA and 15 nA,

B

respectively.

The output stage has good load driving capability. A guaranteed
swing of ±10 V into 600 W and low output distortion make the
OP27 an excellent choice for professional audio applications.

Hz

(Continued on page 7)

Operational Amplifier

OP27

PIN CONNECTIONS

TO-99

(J-Suffix)

BAL

BAL 1

–IN 2

+IN 3

OP27

4V– (CASE)

NC = NO CONNECT

8-Pin Hermetic DIP

(Z-Suffix)

Epoxy Mini-DIP

(P-Suffix)

8-Pin SO

(S-Suffix)

TRIM

OS

–IN

+IN

1

OP27

2

3

4

NC = NO CONNECT

V

V+

OUT

NC

8

V

TRIM

OS

7

V+

6

OUT

5

NCV–

SIMPLIFIED SCHEMATIC

NONINVERTING

INPUT (+)

INVERTING

INPUT (–)

R1 AND R2 ARE PERMANENTLY

*

ADJUSTED AT WAFER TEST FOR
MINIMUM OFFSET VOLTAGE.

Q6

Q3

R1*

R3

18

V

ADJ.

OS

Q2B

R4

R2*

Q2AQ1A Q1B

Q11 Q12

REV. C

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. Trademarks and
registered trademarks are the property of their respective companies.

V+

C2

Q22

Q21

R23 R24

Q23

Q27 Q28

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone] www.analog.com
Fax: [phone] © 2003 Analog Devices, Inc. All rights reserved.

Q24

R5

C1

R9

R12

C3 C4

Q20 Q19

Q26

Q46

OUTPUT

Q45

V–

OP27

–SPECIFICATIONS

ELECTRICAL CHARACTERISTICS

(@ VS = ±15 V, TA = 25C, unless otherwise noted.)

OP27A/E OP27F OP27C/G

Parameter Symbol Conditions Min Typ Max Min Typ Max Min Typ Max Unit

INPUT OFFSET
VOLTAGE

LONG-TERM V

STABILITY

1

OS

2, 3

V

OS

10 25 20 60 30 100 mV

VOS/Time 0.2 1.0 0.3 1.5 0.4 2.0 mV/M

INPUT OFFSET
CURRENT I

OS

735 950 12 75 nA

INPUT BIAS
CURRENT I

INPUT NOISE

VOLTAGE

INPUT NOISE e

Voltage Density

3, 4

3

e

B

n p-p

n

0.1 Hz to 10 Hz 0.08 0.18 0.08 0.18 0.09 0.25 mV p-p

fO = 10 Hz 3.5 5.5 3.5 5.5 3.8 8.0 nV/÷Hz
fO = 30 Hz 3.1 4.5 3.1 4.5 3.3 5.6 nV/÷Hz

±10 ± 40 ±12 ± 55 ±15 ± 80 nA

fO = 1000 Hz 3.0 3.8 3.0 3.8 3.2 4.5 nV/÷Hz

INPUT NOISE i

Current Density

3, 5

n

fO = 10 Hz 1.7 4.0 1.7 4.0 1.7 pA/÷Hz
fO = 30 Hz 1.0 2.3 1.0 2.3 1.0 pA/÷Hz
fO = 1000 Hz 0.4 0.6 0.4 0.6 0.4 0.6 pA/÷Hz

INPUT
RESISTANCE

Differential-Mode
Common-Mode R

6

R

IN

INCM

1.3 6 0.94 5 0.7 4 MW
3 2.5 2 GW

INPUT VOLTAGE
RANGE IVR ±11.0 ± 12.3 ±11.0 ± 12.3 ±11.0 ± 12.3 V

COMMON-MODE

REJECTION RATIO CMRR VCM = ±11 V 114 126 106 123 100 120 dB

POWER SUPPLY PSRR VS = ±4 V

REJECTION RATIO to ±18 V 1 10 1 10 2 20 mV/V

LARGE-SIGNAL A

VO

VOLTAGE GAIN V

RL ≥ 2 kW,

= ±10 V 1000 1800 1000 1800 700 1500 V/mV

O

≥ 600 W,

R

L

VO = ±10 V 800 1500 800 1500 600 1500 V/mV

OUTPUT
VOLTAGE SWING V

O

RL ≥ 2 kW±12.0 ± 13.8 ±12.0 ± 13.8 ±11.5 ± 13.5 V
RL ≥ 600 W±10.0 ± 11.5 ±10.0 ± 11.5 ±10.0 ± 11.5 V

SLEW RATE

7

SR RL ≥ 2 kW 1.7 2.8 1.7 2.8 1.7 2.8 V/ms

O

GAIN
BANDWIDTH

PRODUCT

7

GBW 5.0 8.0 5.0 8.0 5.0 8.0 MHz

OPEN-LOOP
OUTPUT

RESISTANCE R

O

VO = 0, IO = 0 7070 70W

POWER
CONSUMPTION P

d

V

O

90 140 90 140 100 170 mW

OFFSET
ADJUSTMENT

RANGE RP = 10 kW±4.0 ±4.0 ±4.0 mV

NOTES

1

Input offset voltage measurements are performed ~ 0.5 seconds after application of power. A/E grades guaranteed fully warmed up.

2

Long-term input offset voltage stability refers to the average trend line of VOS versus. Time over extended periods after the first 30 days of operation. Excluding the
initial hour of operation, changes in VOS during the first 30 days are typically 2.5 mV. Refer to typical performance curve.

3

Sample tested.

4

See test circuit and frequency response curve for 0.1 Hz to 10 Hz tester.

5

See test circuit for current noise measurement.

6

Guaranteed by input bias current.

7

Guaranteed by design.

–2–

REV. C

OP27

ELECTRICAL CHARACTERISTICS

(@ VS = ±15 V, –55C £ TA £ 125C, unless otherwise noted.)

OP27A OP27C

Parameter Symbol Conditions Min Typ Max Min Typ Max Unit

INPUT OFFSET
VOLTAGE

AVERAGE INPUT
OFFSET DRIFT TCV

1

V

OS

TCV

OS

OSn

30 60 70 300 mV

2

3

0.2 0.6 4 1.8 mV/∞C

INPUT OFFSET
CURRENT I

OS

15 50 30 135 nA

INPUT BIAS
CURRENT I

B

±20 ±60 ±35 ± 150 nA

INPUT VOLTAGE
RANGE IVR ±10.3 ± 11.5 ± 10.2 ± 11.5 V

COMMON-MODE

REJECTION RATIO CMRR VCM = ±10 V 108 122 94 118 dB

POWER SUPPLY

REJECTION RATIO PSRR VS = ±4.5 V to ±18 V 2 16 4 51 mV/V

LARGE-SIGNAL
VOLTAGE GAIN A

VO

RL ≥ 2 kW, VO = ±10 V 600 1200 300 800 V/mV

OUTPUT
VOLTAGE SWING V

NOTES

1

Input offset voltage measurements are performed by automated test equipment approximately 0.5 seconds after application of power. A/E grades guaranteed fully
warmed up.

2

The TCVOS performance is within the specifications unnulled or when nulled with RP = 8 kW to 20 kW. TCVOS is 100% tested for A/E grades, sample tested for
C/F/G grades.

3

Guaranteed by design.

O

RL ≥ 2 kW±11.5 ± 13.5 ± 10.5 ± 13.0 V

REV. C

–3–

OP27

(@ VS = ±15 V, –25C¯£ TA £ 85C for OP27J, OP27Z, 0C £ TA £ 70C for OP27EP,

ELECTRICAL CHARACTERISTICS

Parameter Symbol Conditions Min Typ Max Min Typ Max Min Typ Max Unit

INPUT ONSET
VOLTAGE V

AVERAGE INPUT
OFFSET DRIFT TCV

INPUT OFFSET
CURRENT I

INPUT BIAS
CURRENT I

INPUT VOLTAGE
RANGE IVR ±10.5 ± 11.8 ±10.5 ±11.8 ± 10.5 ±11.8 V

COMMON-MODE

REJECTION RATIO CMRR VCM = ±10 V 110 124 102 121 96 118 dB

POWER SUPPLY

REJECTION RATIO PSRR VS = ±4.5 V 2 15 2 16 2 32 mV/V

LARGE-SIGNAL

VOLTAGE GAIN A

OUTPUT
VOLTAGE SWING V

NOTES

1

The TCVOS performance is within the specifications unnulled or when nulled with RP = 8 kW to 20 kW. TCVOS is 100% tested for A/E grades, sample tested for
C/F/G grades.

2

Guaranteed by design.

OS

TCV

OS

B

VO

O

1

OS

2

OSn

to ±18 V

R

≥ 2 kW,

L

VO = ±10 V 750 1500 700 1300 450 1000 V/mV

RL ≥ 2 kW±11.7 ±13.6 ± 11.4 ± 13.5 ±11.0 ± 13.3 V

OP27FP, and –40C £ TA £ 85C for OP27GP, OP27GS, unless otherwise noted.)

OP27E OP27F OP27G

20 50 40 140 55 220 mV

0.2 0.6 0.3 1.3 0 4 1.8 mV/∞C

0.2 0.6 0.3 1.3 0 4 1.8 mV/∞C

10 50 14 85 20 135 nA

±14 ±60 ±18 ±95 ±25 ±150 nA

–4–

REV. C

OP27

DIE CHARACTERISTICS

1. NULL

8

7

2. (–) INPUT

3. (+) INPUT

4. V–

6. OUTPUT

7. V+

8. NULL

1

1990

1427U

2

3

6

WAFER TEST LIMITS

4

(@ VS = ±15 V, TA = 25C unless otherwise noted.)

OP27N OP27G OP27GR

Parameter Symbol Conditions Limit Limit Limit Unit

INPUT OFFSET VOLTAGE* V

INPUT OFFSET CURRENT I

OS

OS

35 60 100 mV Max

35 50 75 nA Max

INPUT BIAS CURRENT IB ±40 ±55 ±80 nA Max
INPUT VOLTAGE RANGE IVR ±11 ±11 ±11 V Min

COMMON-MODE REJECTION
RATIO CMRR V

= IVR 114 106 100 dB Min

CM

POWER SUPPLY PSRR VS = ±4 V to ±18 V 10 10 20 mV/V Max

LARGE-SIGNAL VOLTAGE
GAIN A

OUTPUT VOLTAGE SWING V

POWER CONSUMPTION P

NOTE
*Electrical tests are performed at wafer probe to the limits shown. Due to variations in assembly methods and normal yield loss, yield after packaging is not guaranteed

for standard product dice. Consult factory to negotiate specifications based on dice lot qualification through sample lot assembly and testing.

VO

A

VO

O

V

O

d

RL ≥ 2 kW, VO = ±10 V 1000 1000 700 V/mV Min
RL ≥ 600 W, VO = ±10 V 800 800 600 V/mV Min

RL ≥ 2 kW±12.0 ± 12.0 +11.5 V Min
RL2600n ±10.0 ± 10.0 ±10.0 V Min

VO = 0 140 140 170 mW Max

REV. C

–5–

OP27

TYPICAL ELECTRICAL CHARACTERISTICS

(@ VS = ±15 V, TA = 25C unless otherwise noted.)

OP27N OP27G OP27GR

Parameter Symbol Conditions Typical Typical Typical Unit

AVERAGE INPUT OFFSET
VOLTAGE DRIFT* TCVOS or Nulled or Unnulled 0.2 0.3 0.4 mV/∞C

TCV

OSn

RP = 8 kW to 20 kW

AVERAGE INPUT OFFSET
CURRENT DRIFT TCI

OS

80 130 180 pA/∞C

AVERAGE INPUT BIAS
CURRENT DRIFT TCI

B

100 160 200 pA/∞C

INPUT NOISE VOLTAGE
DENSITY e

n

e

n

e

n

fO = 10 Hz 3.5 3.5 3.8 nV/÷Hz
fO = 30 Hz 3.1 3.1 3.3 nV/÷Hz
fO = 1000 Hz 3.0 3.0 3.2 nV/÷Hz

INPUT NOISE CURRENT
DENSITY i

INPUT NOISE VOLTAGE e

i
i

n

n

n

np-p

SLEW RATE SR R

fO = 10 Hz 1.7 1.7 1.7 pA/÷Hz
fO = 30 Hz 1.0 1.0 1.0 pA/÷Hz
fO = 1000 Hz 0.4 0.4 0.4 pA/÷Hz

0.1 Hz to 10 Hz 0.08 0.08 0.09 mV p-p
≥ 2 kW 2.8 2.8 2.8 V/ms

L

GAIN BANDWIDTH
PRODUCT GBW 8 8 8 MHz

NOTE

*Input offset voltage measurements are performed by automated test equipment approximately 0.5 seconds after application of power.

–6–

REV. C