Burr Brown OPA2227PA, OPA2227U, OPA2227UA-2K5, OPA2228U, OPA2228PA Datasheet

®

High Precision, Low Noise

OPERATIONAL AMPLIFIERS

FEA TURES

● LOW NOISE: 3nV/√Hz

● WIDE BANDWIDTH:

OPA227: 8MHz, 2.3V/

µs

OPA228: 33MHz, 10V/

µs

● SETTLING TIME: 5

µs

(significant improvement over OP-27)

● HIGH CMRR: 138dB

● HIGH OPEN-LOOP GAIN: 160dB

● LOW INPUT BIAS CURRENT: 10nA max

● LOW OFFSET VOLTAGE: 75µV max

● WIDE SUPPLY RANGE: ±2.5V to ±18V

● OPA227 REPLACES OP-27, LT1007, MAX427

● OPA228 REPLACES OP-37, LT1037, MAX437

● SINGLE, DUAL, AND QUAD VERSIONS

APPLICATIONS

● DATA ACQUISITION

● TELECOM EQUIPMENT

● GEOPHYSICAL ANALYSIS

● VIBRATION ANALYSIS

● SPECTRAL ANALYSIS

● PROFESSIONAL AUDIO EQUIPMENT

● ACTIVE FILTERS

● POWER SUPPLY CONTROL

OPA227

OPA2227
OPA4227

OPA228

OPA2228
OPA4228

© 1998 Burr-Brown Corporation PDS-1494B Printed in U.S.A. May, 1999

International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: [phone]

Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: [phone] • Immediate Product Info: [phone]

OPA4227

OPA227

O

P

A

2

2

7

OPA2227

O

P

A4227

O

P

A

2

2

2

7

For most current data sheet and other product

information, visit www.burr-brown.com

DESCRIPTION

The OPA227 and OPA228 series op amps combine
low noise and wide bandwidth with high precision to
make them the ideal choice for applications requiring
both ac and precision dc performance.

The OPA227 is unity gain stable and features high
slew rate (2.3V/µs) and wide bandwidth (8MHz). The
OPA228 is optimized for closed-loop gains of 5 or
greater, and offers higher speed with a slew rate of
10V/µs and a bandwidth of 33MHz.

The OPA227 and OPA228 series op amps are ideal
for professional audio equipment. In addition, low
quiescent current and low cost make them ideal for
portable applications requiring high precision.

The OPA227 and OPA228 series op amps are pin­for-pin replacements for the industry standard OP-27
and OP-37 with substantial improvements across the
board. The dual and quad versions are available for
space savings and per-channel cost reduction.

The OPA227, OPA228, OPA2227, and OPA2228
are available in DIP-8 and SO-8 packages. The
OPA4227 and OPA4228 are available in DIP-14
and SO-14 packages with standard pin configura­tions. Operation is specified from –40°C to +85°C.

SPICE Model available for OPA227 at www.burr-brown.com

1
2
3
4

8
7
6
5

Trim
V+
Output
NC

Trim

–In
+In

V–

OPA227, OPA228

DIP-8, SO-8

1
2
3
4

8
7
6
5

V+
Out B
–In B
+In B

Out A

–In A
+In A

V–

OPA2227, OPA2228

DIP-8, SO-8

A

B

1
2
3
4
5
6
7

14
13
12
11
10

9
8

Out D
–In D
+In D
V–
+In C
–In C
Out C

Out A

–In A
+In A

V+
+In B
–In B

Out B

OPA4227, OPA4228

DIP-14, SO-14

AD

BC

2

®

OPA227, 2227, 4227
OPA228, 2228, 4228

SPECIFICATIONS: VS = ±5V to ±15V

OPA227 Series

At TA = +25°C, and RL = 10kΩ, unless otherwise noted.
Boldface limits apply over the specified temperature range, T

A

= –40°C to +85°C.

OPA227PA, UA

OPA227P, U OPA2227PA, UA

OPA2227P, U OPA4227PA, UA

PARAMETER CONDITION MIN TYP MAX MIN TYP MAX UNITS
OFFSET VOLTAGE

Input Offset Voltage V

OS

±5 ±75 ±10 ±200 µV

OT

A

= –40°C to +85°Cver Temperature ±100 ±200 µV

vs Temperature dVOS/dT ±0.1 ±0.6 ±0.3 ±2 µV/°C
vs Power Supply PSRR V

S

= ±2.5V to ±18V ±0.5 ±2 ✻✻µV/V

T

A

= –40°C to +85°C ±2 ✻ µV/V

vs Time 0.2 ✻ µV/mo

Channel Separation (dual, quad) dc 0.2 ✻ µV/V

f = 1kHz, R

L

= 5kΩ 110 ✻ dB

INPUT BIAS CURRENT

Input Bias Current I

B

±2.5 ±10 ✻✻nA

T

A

= –40°C to +85°C ±10 ✻ nA

Input Offset Current I

OS

±2.5 ±10 ✻✻nA

T

A

= –40°C to +85°C ±10 ✻ nA

NOISE

Input Voltage Noise, f = 0.1Hz to 10Hz 90 ✻ nVp-p

15 ✻ nVrms

Input Voltage Noise Density, f = 10Hz e

n

3.5 ✻ nV/√Hz
f = 100Hz 3 ✻ nV/√Hz
f = 1kHz 3 ✻ nV/√Hz

Current Noise Density, f = 1kHz i

n

0.4 ✻ pA/√Hz

INPUT VOLTAGE RANGE

Common-Mode Voltage Range V

CM

(V–)+2 (V+)–2 ✻✻V

Common-Mode Rejection CMRR V

CM

= (V–)+2V to (V+)–2V 120 138 ✻✻ dB

T

A

= –40°C to +85°C 120 ✻ dB

INPUT IMPEDANCE

Differential 10

7

|| 12 ✻ Ω || pF

Common-Mode VCM = (V–)+2V to (V+)–2V 109 || 3 ✻ Ω || pF

OPEN-LOOP GAIN

Open-Loop Voltage Gain A

OLVO

= (V–)+2V to (V+)–2V, RL = 10kΩ

132 160 ✻✻ dB

T

A

= –40°C to +85°C 132 ✻ dB

VO = (V–)+3.5V to (V+)–3.5V, RL = 600Ω

132 160 ✻✻ dB

T

A

= –40°C to +85°C 132 ✻ dB

FREQUENCY RESPONSE

Gain Bandwidth Product GBW 8 ✻ MHz
Slew Rate SR 2.3 ✻ V/µs
Settling Time: 0.1% G = 1, 10V Step, C

L

= 100pF 5 ✻ µs

0.01% G = 1, 10V Step, C

L

= 100pF 5.6 ✻ µs

Overload Recovery Time V

IN

• G = V

S

1.3 ✻ µs

Total Harmonic Distortion + Noise THD+N f = 1kHz, G = 1, VO = 3.5Vrms 0.00005 ✻ %

OUTPUT

Voltage Output R

L

= 10kΩ (V–)+2 (V+)–2 ✻✻V

T

A

= –40°C to +85°C RL = 10kΩ (V–)+2 (V+)–2 ✻✻V

R

L

= 600Ω (V–)+3.5 (V+)–3.5 ✻✻V

T

A

= –40°C to +85°C RL = 600Ω (V–)+3.5 (V+)–3.5 ✻✻V

Short-Circuit Current I

SC

±45 ✻ mA

Capacitive Load Drive C

LOAD

See Typical Curve ✻

POWER SUPPLY

Specified Voltage Range V

S

±5 ±15 ✻✻V
Operating Voltage Range ±2.5 ±18 ✻✻V
Quiescent Current (per amplifier) I

Q

IO = 0 ±3.7 ±3.8 ✻✻mA

TA = –40°C to +85°C IO = 0 ±4.2 ✻ mA

TEMPERATURE RANGE

Specified Range –40 +85 ✻✻°C
Operating Range –55 +125 ✻✻°C
Storage Range –65 +150 ✻✻°C
Thermal Resistance

θ

JA

SO-8 Surface Mount 150 ✻ °C/W
DIP-8 100 ✻ °C/W
DIP-14 80 ✻ °C/W
SO-14 Surface Mount 100 ✻ °C/W

✻ Specifications same as OPA227P, U.

3

®

OPA227, 2227, 4227
OPA228, 2228, 4228

OPA228PA, UA

OPA228P, U OPA2228PA, UA

OPA2228P, U OPA4228PA, UA

PARAMETER CONDITION MIN TYP MAX MIN TYP MAX UNITS
OFFSET VOLTAGE

Input Offset Voltage V

OS

±5 ±75 ±10 ±200 µV

OT

A

= –40°C to +85°Cver Temperature ±100 ±200 µV

vs Temperature dVOS/dT ±0.1 ±0.6 ±0.3 ±2 µV/°C
vs Power Supply PSRR V

S

= ±2.5V to ±18V ±0.5 ±2 ✻✻µV/V

T

A

= –40°C to +85°C ±2 ✻ µV/V

vs Time 0.2 ✻ µV/mo

Channel Separation (dual, quad) dc 0.2 ✻ µV/V

f = 1kHz, R

L

= 5kΩ 110 ✻ dB

INPUT BIAS CURRENT

Input Bias Current I

B

±2.5 ±10 ✻✻nA

T

A

= –40°C to +85°C ±10 ✻ nA

Input Offset Current I

OS

±2.5 ±10 ✻✻nA

T

A

= –40°C to +85°C ±10 ✻ nA

NOISE

Input Voltage Noise, f = 0.1Hz to 10Hz 90 ✻ nVp-p

15 ✻ nVrms

Input Voltage Noise Density, f = 10Hz e

n

3.5 ✻ nV/√Hz
f = 100Hz 3 ✻ nV/√Hz
f = 1kHz 3 ✻ nV/√Hz

Current Noise Density, f = 1kHz i

n

0.4 ✻ pA/√Hz

INPUT VOLTAGE RANGE

Common-Mode Voltage Range V

CM

(V–)+2 (V+)–2 ✻✻V

Common-Mode Rejection CMRR V

CM

= (V–)+2V to (V+)–2V 120 138 ✻✻ dB

T

A

= –40°C to +85°C 120 ✻ dB

INPUT IMPEDANCE

Differential 10

7

|| 12 ✻ Ω || pF

Common-Mode VCM = (V–)+2V to (V+)–2V 109 || 3 ✻ Ω || pF

OPEN-LOOP GAIN

Open-Loop Voltage Gain A

OLVO

= (V–)+2V to (V+)–2V, RL = 10kΩ

132 160 ✻✻ dB

T

A

= –40°C to +85°C 132 ✻ dB

VO = (V–)+3.5V to (V+)–3.5V, RL = 600Ω

132 160 ✻✻ dB

T

A

= –40°C to +85°C 132 ✻ dB

FREQUENCY RESPONSE

Minimum Closed-Loop Gain 5 ✻ V/V
Gain Bandwidth Product GBW 33 ✻ MHz
Slew Rate SR 11 ✻ V/µs
Settling Time: 0.1%

G = 5, 10V Step, CL = 100pF, CF =12pF

1.5 ✻ µs

0.01%

G = 5, 10V Step, CL = 100pF, CF =12pF

2 ✻ µs

Overload Recovery Time VIN • G = V

S

0.6 ✻ µs

Total Harmonic Distortion + Noise THD+N f = 1kHz, G = 5, V

O

= 3.5Vrms 0.00005 ✻ %

OUTPUT

Voltage Output R

L

= 10kΩ (V–)+2 (V+)–2 ✻✻V

T

A

= –40°C to +85°C RL = 10kΩ (V–)+2 (V+)–2 ✻✻V

R

L

= 600Ω (V–)+3.5 (V+)–3.5 ✻✻V

TA = –40°C to +85°C RL = 600Ω (V–)+3.5 (V+)–3.5 ✻✻V

Short-Circuit Current I

SC

±45 ✻ mA

Capacitive Load Drive C

LOAD

See Typical Curve ✻

POWER SUPPLY

Specified Voltage Range V

S

±5 ±15 ✻✻V
Operating Voltage Range ±2.5 ±18 ✻✻V
Quiescent Current (per amplifier) I

Q

IO = 0 ±3.7 ±3.8 ✻✻mA

T

A

= –40°C to +85°C IO = 0 ±4.2 ✻ mA

TEMPERATURE RANGE

Specified Range –40 +85 ✻✻°C
Operating Range –55 +125 ✻✻°C
Storage Range –65 +150 ✻✻°C
Thermal Resistance

θ

JA

SO-8 Surface Mount 150 ✻ °C/W
DIP-8 100 ✻ °C/W
DIP-14 80 ✻ °C/W
SO-14 Surface Mount 100 ✻ °C/W

✻ Specifications same as OPA228P, U.

SPECIFICATIONS: VS = ±5V to ±15V

OPA228 Series

At TA = +25°C, and RL = 10kΩ, unless otherwise noted.
Boldface limits apply over the specified temperature range, T

A

= –40°C to +85°C.

4

®

OPA227, 2227, 4227
OPA228, 2228, 4228

ABSOLUTE MAXIMUM RATINGS

(1)

Supply Voltage .................................................................................. ±18V

Signal Input Terminals, Voltage ........................(V–) –0.7V to (V+) +0.7V

Current ....................................................... 20mA

Output Short-Circuit

(2)

.............................................................. Continuous

Operating Temperature ..................................................–55°C to +125°C

Storage Temperature ..................................................... –65°C to +150°C

Junction Temperature ...................................................................... 150°C

Lead Temperature (soldering, 10s)................................................. 300°C

NOTE: (1) Stresses above these ratings may cause permanent damage.
Exposure to absolute maximum conditions for extended periods may degrade
device reliability. (2) Short-circuit to ground, one amplifier per package.

ELECTROSTATIC
DISCHARGE SENSITIVITY

This integrated circuit can be damaged by ESD. Burr-Brown
recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.

ESD damage can range from subtle performance degrada­tion to complete device failure. Precision integrated circuits
may be more susceptible to damage because very small
parametric changes could cause the device not to meet its
published specifications.

PACKAGE/ORDERING INFORMATION

The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.

OFFSET OFFSET PACKAGE

VOLTAGE VOLTAGE DRIFT DRAWING TEMPERATURE ORDERING TRANSPORT

PRODUCT max,

µV max, µV/°C PACKAGE NUMBER

(1)

RANGE NUMBER

(2)

MEDIA

OPA227 Series
Single

OPA227PA ±200 ±2 DIP-8 006 –40°C to +85°C OPA227PA Rails
OPA227P ±75 ±0.6 DIP-8 006 –40°C to +85°C OPA227P Rails
OPA227UA ±200 ±2 SO-8 Surface Mount 182 –40°C to +85°C OPA227UA Rails

" " " " " " OPA227UA/2K5 Tape and Reel

OPA227U ±75 ±0.6 SO-8 Surface Mount 182 –40°C to +85°C OPA227U Rails

" " " " " " OPA227U/2K5 Tape and Reel

Dual

OPA2227PA ±200 ±2 DIP-8 006 –40°C to +85°C OPA2227PA Rails
OPA2227P ±75 ±0.6 DIP-8 006 –40°C to +85°C OPA2227P Rails
OPA2227UA ±200 ±2 SO-8 Surface Mount 182 –40°C to +85°C OPA2227UA Rails

" " " " " " OPA2227UA/2K5 Tape and Reel

OPA2227U ±75 ±0.6 SO-8 Surface Mount 182 –40°C to +85°C OPA2227U Rails

" " " " " " OPA2227U/2K5 Tape and Reel

Quad

OPA4227PA ±200 ±2 DIP-14 010 –40°C to +85°C OPA4227PA Rails
OPA4227UA ±200 ±2 SO-14 Surface Mount 235 –40°C to +85°C OPA4227UA Rails

" " " " " " OPA4227UA/2K5 Tape and Reel

OPA228 Series
Single

OPA228PA ±200 ±2 DIP-8 006 –40°C to +85°C OPA228PA Rails
OPA228P ±75 ±0.6 DIP-8 006 –40°C to +85°C OPA228P Rails
OPA228UA ±200 ±2 SO-8 Surface Mount 182 –40°C to +85°C OPA228UA Rails

" " " " " " OPA228UA/2K5 Tape and Reel

OPA228U ±75 ±0.6 SO-8 Surface Mount 182 –40°C to +85°C OPA228U Rails

" " " " " " OPA228U/2K5 Tape and Reel

Dual

OPA2228PA ±200 ±2 DIP-8 006 –40°C to +85°C OPA2228PA Rails
OPA2228P ±75 ±0.6 DIP-8 006 –40°C to +85°C OPA2228P Rails
OPA2228UA ±200 ±2 SO-8 Surface Mount 182 –40°C to +85°C OPA2228UA Rails

" " " " " " OPA2228UA/2K5 Tape and Reel

OPA2228U ±75 ±0.6 SO-8 Surface Mount 182 –40°C to +85°C OPA2228U Rails

" " " " " " OPA2228U/2K5 Tape and Reel

Quad

OPA4228PA ±200 ±2 DIP-14 010 –40°C to +85°C OPA4228PA Rails
OPA4228UA ±200 ±2 SO-14 Surface Mount 235 –40°C to +85°C OPA4228UA Rails

" " " " " " OPA4228UA/2K5 Tape and Reel

NOTE: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix C of Burr-Brown IC Data Book. (2) Products followed by a slash
(/) are only available in Tape and Reel in the quantities indicated (e.g. /2K5 indicates 2500 devices per reel). Ordering 2500 pieces of “OPA227UA/2K5” will get
a single 2500 piece Tape and Reel. For detailed Tape and Reel mechanical information, refer to Appendix B of Burr-Brown IC Data Book.

5

®

OPA227, 2227, 4227
OPA228, 2228, 4228

TYPICAL PERFORMANCE CURVES

At TA = +25°C, RL = 10kΩ, and VS = ±15V, unless otherwise noted.

0.01 0.10 1 10 100 1k 10k 100k 1M 10M 100M

180
160
140
120
100

80
60
40
20

0

–20

A

OL

(dB)

0
–20
–40
–60
–80
–100
–120
–140
–160
–180
–200

Phase (°)

Frequency (Hz)

OPEN-LOOP GAIN/PHASE vs FREQUENCY

G

φ

OPA228

20 100 1k 10k 20k

0.01

0.001

0.0001

0.00001

THD+Noise (%)

Frequency (Hz)

TOTAL HARMONIC DISTORTION + NOISE

vs FREQUENCY

G = 1, RL = 10kΩ

V

OUT

= 3.5Vrms

OPA227

20 100 1k 10k 50k

0.01

0.001

0.0001

0.00001

THD+Noise (%)

Frequency (Hz)

TOTAL HARMONIC DISTORTION + NOISE

vs FREQUENCY

G = 1, RL = 10kΩ

V

OUT

= 3.5Vrms

OPA228

0.01 0.10 1 10 100 1k 10k 100k 1M 10M 100M

180
160
140
120
100

80
60
40
20

0

–20

A

OL

(dB)

0
–20
–40
–60
–80
–100
–120
–140
–160
–180
–200

Phase (°)

Frequency (Hz)

OPEN-LOOP GAIN/PHASE vs FREQUENCY

G

OPA227

φ

10.1 10 100 1k 10k 100k 1M

140

120

100

80

60

40

-20

–0

PSRR, CMRR (dB)

Frequency (Hz)

POWER SUPPLY AND COMMON-MODE

REJECTION RATIO vs FREQUENCY

+CMRR

+PSRR

–PSRR

0.1 101 100 1k 10k

100k

10k

1k

100

10

1

Voltage Noise (nV/√Hz)

Current Noise (fA/√Hz)

Frequency (Hz)

INPUT VOLTAGE AND CURRENT NOISE

SPECTRAL DENSITY vs FREQUENCY

Current Noise

Voltage Noise

6

®

OPA227, 2227, 4227
OPA228, 2228, 4228

TYPICAL PERFORMANCE CURVES (CONT)

At TA = +25°C, RL =10kΩ, and VS = ±15V, unless otherwise noted.

OFFSET VOLTAGE PRODUCTION DISTRIBUTION

Percent of Amplifiers (%)

Offset Voltage (µV)

–150

–135

–120

–105

–90

–75

–60

–45

–30

–15

0

1530456075

90

105

120

135

150

17.5

15.0

12.5

10.0

5.5

5.0

2.5

0

Typical distribution
of packaged units.

OFFSET VOLTAGE DRIFT PRODUCTION DISTRIBUTION

Percent of Amplifiers (%)

Offset Voltage Drift (µV)/°C

12

8

4

0

Typical distribution
of packaged units.

0 0.5 1.0 1.5

10

8
6
4
2

0
–2
–4
–6
–8

–10

Offset Voltage Change (µV)

0 100 150 300

Time from Power Supply Turn-On (s)

WARM-UP OFFSET VOLTAGE DRIFT

50 200 250

10 100 1k 10k 100k 1M

140

120

100

80

60

40

Channel Separation (dB)

Frequency (Hz)

CHANNEL SEPARATION vs FREQUENCY

Dual and quad devices. G = 1, all channels.
Quad measured Channel A to D, or B to C;
other combinations yield similiar or improved
rejection.

INPUT NOISE VOLTAGE vs TIME

1s/div

50nV/div

VOLTAGE NOISE DISTRIBUTION (10Hz)

Percent of Units (%)

Noise (nV/√Hz)

3.160 3.25 3.34 3.43 3.51 3.60 3.69 3.78

24

16

8

0