TEXAS INSTRUMENTS OPA2227, OPA4227, OPA2228, OPA4228 Technical data

		O
		PA
			4227
		OP			PA
		A227		O		2227
			OP
			A4227
		O
		PA227		O
				PA2227

OPA227

OPA2227

OPA4227

OPA228

OPA2228

OPA4228

SBOS110A – MAY 1998 – REVISED JANUARY 2005

High Precision, Low Noise

OPERATIONAL AMPLIFIERS

	FEATURES			DESCRIPTION
	● LOW NOISE: 3nV/√
		Hz		The OPA227 and OPA228 series op amps combine low
	● WIDE BANDWIDTH:			noise and wide bandwidth with high precision to make them
	OPA227: 8MHz, 2.3V/ s			the ideal choice for applications requiring both ac and preci-
	OPA228: 33MHz, 10V/ s			sion dc performance.
	● SETTLING TIME: 5 s			The OPA227 is unity-gain stable and features high slew rate
	(significant improvement over OP-27)			(2.3V/ s) and wide bandwidth (8MHz). The OPA228 is opti-
	● HIGH CMRR: 138dB			mized for closed-loop gains of 5 or greater, and offers higher
	● HIGH OPEN-LOOP GAIN: 160dB			speed with a slew rate of 10V/ s and a bandwidth of 33MHz.
	● LOW INPUT BIAS CURRENT: 10nA max			The OPA227 and OPA228 series op amps are ideal for
	● LOW OFFSET VOLTAGE: 75 V max			professional audio equipment. In addition, low quiescent
	● WIDE SUPPLY RANGE: ± 2.5V to ± 18V			current and low cost make them ideal for portable applica-
	● OPA227 REPLACES OP-27, LT1007, MAX427			tions requiring high precision.
	● OPA228 REPLACES OP-37, LT1037, MAX437			The OPA227 and OPA228 series op amps are pin-for-pin
	● SINGLE, DUAL, AND QUAD VERSIONS			replacements for the industry standard OP-27 and OP-37
				with substantial improvements across the board. The dual
	APPLICATIONS			and quad versions are available for space savings and per-
				channel cost reduction.

● DATA ACQUISITION							The OPA227, OPA228, OPA2227, and OPA2228 are
● TELECOM EQUIPMENT
							available in DIP-8 and SO-8 packages. The OPA4227 and
● GEOPHYSICAL ANALYSIS							OPA4228 are available in DIP-14 and SO-14 packages
● VIBRATION ANALYSIS							with standard pin configurations. Operation is specified
● SPECTRAL ANALYSIS							from –40° C to +85° C.
● PROFESSIONAL AUDIO EQUIPMENT
● ACTIVE FILTERS									OPA4227, OPA4228
● POWER SUPPLY CONTROL								Out A	1	14	Out D
SPICE model available for OPA227 at www.ti.com								–In A	2	13	–In D
						OPA2227, OPA2228			A	D
								+In A	3	12	+In D
	OPA227, OPA228							V+	4	11	V–
				Out A	1		8	V+
Trim	1	8	Trim			A		+In B	5	10	+In C
				–In A	2		7	Out B	B	C
–In	2	7	V+			B		–In B	6	9	–In C
				+In A	3		6	–In B
+In	3	6	Output					Out B	7	8	Out C
				V–	4		5	+In B
V–	4	5	NC			DIP-8, SO-8			DIP-14, SO-14

DIP-8, SO-8

NC = Not Connected

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.	Copyright © 1998-2005, Texas Instruments Incorporated
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.

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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, TA = –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

± 5

±

± 10

± 200

µ V

Input Offset Voltage

VOS

75

OTA = –40° C to +85°Cver Temperature

± 100

± 200

µ V

vs Temperature

dVOS/dT

VS = ± 2.5V to ± 18V

± 0.1

± 0.6

± 0.3

± 2

µ V/° C

vs Power Supply

PSRR

±

0.5

± 2

µ V/V

TA = –40°C to +85° C

± 2

µ V/V

vs Time

0.2

µ V/mo

Channel Separation (dual, quad)

dc

0.2

µ V/V

f = 1kHz, RL = 5kΩ

110

dB

INPUT BIAS CURRENT

±

±

Input Bias Current

IB

2.5

10

nA

TA = –40°C to +85° C

IOS

± 10

nA

Input Offset Current

±

2.5

±

10

nA

TA = –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 en

3.5

nV/√

Hz

f = 100Hz

3

nV/√

Hz

f = 1kHz

3

nV/√

Hz

Current Noise Density, f = 1kHz

in

0.4

pA/√

Hz

INPUT VOLTAGE RANGE

Common-Mode Voltage Range

VCM

VCM = (V–)+2V to (V+)–2V

(V–)+2

(V+)–2

V

Common-Mode Rejection

CMRR

120

138

dB

TA = –40°C to +85° C

120

dB

INPUT IMPEDANCE

Ω

Differential

107 || 12

|| pF

Common-Mode

VCM = (V–)+2V to (V+)–2V

109 || 3

Ω

|| pF

OPEN-LOOP GAIN

VO = (V–)+2V to (V+)–2V, RL = 10kΩ

Open-Loop Voltage Gain

AOL

132

160

dB

TA = –40°C to +85° C

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

132

dB

TA = –40°C to +85° C

132

160

dB

132

dB

FREQUENCY RESPONSE

Gain Bandwidth Product

GBW

8

MHz

Slew Rate

SR

2.3

V/µ

s

Settling Time: 0.1%

G = 1, 10V Step, CL = 100pF

5

µ s

0.01%

G = 1, 10V Step, CL = 100pF

5.6

µ s

Overload Recovery Time

VIN • G = VS

1.3

µ s

Total Harmonic Distortion + Noise

THD+N

f = 1kHz, G = 1, VO = 3.5Vrms

0.00005

%

OUTPUT

RL = 10kΩ

Voltage Output

(V–)+2

(V+)–2

V

TA = –40°C to +85° C

RL = 10kΩ

(V–)+2

(V+)–2

V

TA = –40°C to +85° C

RL = 600Ω

(V–)+3.5

(V+)–3.5

V

RL = 600Ω

(V–)+3.5

±

(V+)–3.5

V

Short-Circuit Current

ISC

45

mA

Capacitive Load Drive

CLOAD

See

Typical Curve

POWER SUPPLY

± 5

±

Specified Voltage Range

VS

15

V

Operating Voltage Range

± 2.5

±

18

V

Quiescent Current (per amplifier)

IQ

IO = 0

±

3.7

±

3.8

mA

TA = –40°C to +85° C

IO = 0

± 4.2

mA

TEMPERATURE RANGE

° C

Specified Range

–40

+85

Operating Range

–55

+125

° C

Storage Range

θ JA

–65

+150

° C

Thermal Resistance

° C/W

SO-8 Surface Mount

150

DIP-8

100

° C/W

DIP-14

80

° C/W

SO-14 Surface Mount

100

° C/W

Specifications same as OPA227P, U.

	OPA227, 2227, 4227
2	OPA228, 2228, 4228

www.ti.com

SBOS110A

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, TA = –40° C to +85° C.

OPA228PA, UA

OPA228P, U

OPA2228PA, UA

OPA2228P, U

OPA4228PA, UA

PARAMETER

CONDITION

MIN

TYP

MAX

MIN

TYP

MAX

UNITS

OFFSET VOLTAGE

± 5

±

± 10

± 200

µ V

Input Offset Voltage

VOS

75

OTA = –40° C to +85°Cver Temperature

± 100

± 200

µ V

vs Temperature

dVOS/dT

VS = ± 2.5V to ± 18V

± 0.1

± 0.6

± 0.3

± 2

µ V/° C

vs Power Supply

PSRR

±

0.5

± 2

µ V/V

TA = –40°C to +85°C

± 2

µ V/V

vs Time

0.2

µ V/mo

Channel Separation (dual, quad)

dc

0.2

µ V/V

f = 1kHz, RL = 5kΩ

110

dB

INPUT BIAS CURRENT

±

±

Input Bias Current

IB

2.5

10

nA

TA = –40°C to +85°C

IOS

± 10

nA

Input Offset Current

±

2.5

±

10

nA

TA = –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 en

3.5

nV/√

Hz

f = 100Hz

3

nV/√

Hz

f = 1kHz

3

nV/√

Hz

Current Noise Density, f = 1kHz

in

0.4

pA/√

Hz

INPUT VOLTAGE RANGE

Common-Mode Voltage Range

VCM

VCM = (V–)+2V to (V+)–2V

(V–)+2

(V+)–2

V

Common-Mode Rejection

CMRR

120

138

dB

TA = –40°C to +85°C

120

dB

INPUT IMPEDANCE

Ω

Differential

107 || 12

|| pF

Common-Mode

VCM = (V–)+2V to (V+)–2V

109 || 3

Ω

|| pF

OPEN-LOOP GAIN

VO = (V–)+2V to (V+)–2V, RL = 10kΩ

Open-Loop Voltage Gain

AOL

132

160

dB

TA = –40°C to +85°C

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

132

dB

TA = –40°C to +85°C

132

160

dB

132

dB

FREQUENCY RESPONSE

Minimum Closed-Loop Gain

5

V/V

Gain Bandwidth Product

GBW

33

MHz

Slew Rate

SR

11

V/µ

s

Settling Time: 0.1%

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

1.5

µ s

0.01%

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

2

µ s

Overload Recovery Time

VIN • G = VS

0.6

µ s

Total Harmonic Distortion + Noise

THD+N

f = 1kHz, G = 5, VO = 3.5Vrms

0.00005

%

OUTPUT

RL = 10kΩ

Voltage Output

(V–)+2

(V+)–2

V

TA = –40°C to +85°C

RL = 10kΩ

(V–)+2

(V+)–2

V

TA = –40°C to +85°C

RL = 600Ω

(V–)+3.5

(V+)–3.5

V

RL = 600Ω

(V–)+3.5

±

(V+)–3.5

V

Short-Circuit Current

ISC

45

mA

Capacitive Load Drive

CLOAD

See

Typical Curve

POWER SUPPLY

± 5

±

Specified Voltage Range

VS

15

V

Operating Voltage Range

± 2.5

±

18

V

Quiescent Current (per amplifier)

IQ

IO = 0

±

3.7

±

3.8

mA

TA = –40°C to +85°C

IO = 0

± 4.2

mA

TEMPERATURE RANGE

° C

Specified Range

–40

+85

Operating Range

–55

+125

° C

Storage Range

θ JA

–65

+150

° C

Thermal Resistance

° C/W

SO-8 Surface Mount

150

DIP-8

100

° C/W

DIP-14

80

° C/W

SO-14 Surface Mount

100

° C/W

Specifications same as OPA228P, U.

OPA227, 2227, 4227
OPA228, 2228, 4228	3

SBOS110A

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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.

PACKAGE/ORDERING INFORMATION

For the most current package and ordering information, see the Package Option Addendum located at the end of this datasheet, or refer to our web site at www.ti.com.

4

ELECTROSTATIC DISCHARGE SENSITIVITY

This integrated circuit can be damaged by ESD. Texas Instruments 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.

OPA227, 2227, 4227

OPA228, 2228, 4228

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SBOS110A

TYPICAL PERFORMANCE CURVES

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

OPEN-LOOP GAIN/PHASE vs FREQUENCY

180

0

160

OPA227

–20

140

–40

G

120

–60

(dB)

100

–80

(° )

(dB)

Phase

A

60

–120

A

OL

80

–100

OL

40

–140

20

–160

0

–180

–20

–200

0.01

0.10

1

10

100

1k

10k

100k

1M

10M 100M

Frequency (Hz)

					OPEN-LOOP GAIN/PHASE vs FREQUENCY
180																																													0
160																																				OPA228									–20
140																																													–40
120
																			G																										–60
100																																													–80
															φ
80																																													–100
60																																													–120
40																																													–140
20																																													–160
0																																													–180
–20																																													–200
0.01			0.10						1			10		100									1k			10k				100k				1M				10M 100M
																Frequency (Hz)

Phase (° )

PSRR, CMRR (dB)

POWER SUPPLY AND COMMON-MODE

REJECTION RATIO vs FREQUENCY

140
120
																												+CMRR
100
80																							+PSRR
60
																		–PSRR
40
-20
–0
0.1					1				10				100							1k							10k						100k						1M

Frequency (Hz)

	(nV/√ Hz)		(fA/√ Hz)
	Voltage Noise		Current Noise

INPUT VOLTAGE AND CURRENT NOISE SPECTRAL DENSITY vs FREQUENCY

100k

10k

1k	Current Noise

100

10

Voltage Noise

1

0.1

1

10

100

1k

10k

Frequency (Hz)

THD+Noise (%)

TOTAL HARMONIC DISTORTION + NOISE vs FREQUENCY

0.01
0.001										VOUT = 3.5Vrms													OPA227
0.0001
0.00001					G = 1, RL					= 10kΩ
20					100													1k									10k			20k
										Frequency (Hz)

THD+Noise (%)

TOTAL HARMONIC DISTORTION + NOISE vs FREQUENCY

0.01

VOUT = 3.5Vrms OPA228

0.001

0.0001
0.00001		G = 1, RL							= 10kΩ
20		100												1k	10k	50k
										Frequency (Hz)

OPA227, 2227, 4227
OPA228, 2228, 4228	5

SBOS110A

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TYPICAL PERFORMANCE CURVES (CONT)

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

INPUT NOISE VOLTAGE vs TIME

50nV/div

1s/div

Channel Separation (dB)

CHANNEL SEPARATION vs FREQUENCY

140

120

100

80

Dual and quad devices. G = 1, all channels.

Quad measured Channel A to D, or B to C;

60other combinations yield similiar or improved rejection.

40

10

100

1k

10k

100k

1M

Frequency (Hz)

VOLTAGE NOISE DISTRIBUTION (10Hz)

	24
(%)	16
of Units
Percent	8
	0
	0	3.16	3.25	3.34	3.43	3.51	3.60	3.69	3.78

Noise (nV/√ Hz)

OFFSET VOLTAGE DRIFT PRODUCTION DISTRIBUTION

	12		Typical distribution
			of packaged units.
(%)
of Amplifiers	8
Percent	4
	0
	0	0.5	1.0	1.5
		Offset Voltage Drift (µ V)/° C

OFFSET VOLTAGE PRODUCTION DISTRIBUTION

17.5

Typical distribution

	15.0	of packaged units.
(%)	12.5
Amplifiers
	10.0
	5.5
of
Percent	5.0
	2.5
	0
		–150	–135	–120	–105	–90	–75	–60	–45	–30	–15	0	15	30	45	60	75	90	105	120	135	150
									Offset Voltage (µ V)

WARM-UP OFFSET VOLTAGE DRIFT

		10
		8
	V)	6
	(
	Change	4
		2
	Voltage	0
		–2
	Offset	–4
		–6
		–8
		–10

0	50	100	150	200	250	300
		Time from Power Supply Turn-On (s)

	OPA227, 2227, 4227
6	OPA228, 2228, 4228

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SBOS110A

TYPICAL PERFORMANCE CURVES (CONT)

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

AOL, CMRR, PSRR vs TEMPERATURE

	160
	150																A	OL
(dB)	140											CMRR
	130
PSRR	120					PSRR
CMRR,,	110
	100
OL	90
A	80
				OPA227
	70
	60
	–75			–50		–25			0	25		50		75		100			125
									Temperature (° C)

OL

A , CMRR, PSRR (dB)

150
140					AOL,			CMRR,		PSRR		CMRR
160															AOL
130
120						PSRR
110
100
90
80
			OPA228
70
60
–75			–50			–25			0	25		50		75	100		125

Temperature (° C)

INPUT BIAS CURRENT vs TEMPERATURE

	2.0
(nA)	1.5
	1.0
Current	0.5
	0
Bias	–0.5
Input	–1.0
	–1.5
	–2.0
	–60		–40		–20		0		20		40		60		80		100		120		140

Temperature (° C)

QUIESCENT CURRENT vs TEMPERATURE

	5.0
(mA)	4.5																				± 18V
																					± 15V
Current																					± 12V
																					± 5V
	4.0																				± 10V
Quiescent
	3.5																				± 2.5V
	3.0
	2.5
	–60		–40		–20		0		20		40		60		80		100		120		140
									Temperature (° C)

SHORT-CIRCUIT CURRENT vs TEMPERATURE

	60
(mA)	50
Current	40
													+ISC			–ISC
	30
-Circuit
	20
Short	10
	0
	–75		–50		–25		0		25		50		75		100		125
							Temperature (° C)

QUIESCENT CURRENT vs SUPPLY VOLTAGE

	3.8
(mA)	3.6
Current	3.4
Quiescent	3.2
	3.0
	2.8

0	2	4	6	8	10	12	14	16	18	20
				Supply Voltage (±			V)

OPA227, 2227, 4227
OPA228, 2228, 4228	7

SBOS110A

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TYPICAL PERFORMANCE CURVES (CONT)

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

SLEW RATE vs TEMPERATURE

SLEW RATE vs TEMPERATURE

	3.0		OPA227
	2.5	Positive Slew Rate
V/V)(							Negative Slew Rate			V/V)(
	2.0
Rate	1.5									Rate
Slew	1.0									Slew
	0.5							RLOAD = 2kΩ
								CLOAD = 100pF
	0
		–75	–50	–25	0	25	50	75	100	125

12

OPA228

10

8
6
4
								RLOAD = 2kΩ
2
								CLOAD = 100pF
0
–75		–50	–25	0	25	50		75		100		125

Temperature (° C)

Temperature (° C)

CHANGE IN INPUT BIAS CURRENT vs POWER SUPPLY VOLTAGE

	2.0
	1.5		Curve shows normalized change in bias current
			with respect to VS = ± 10V. Typical IB may range
	1.0		from –2nA to +2nA at VS = ± 10V.
(nA)	0.5
	0
B
∆ I	–0.5
	–1.0
	–1.5
	–2.0
	0		5		10		15		20		25		30		35		40

Supply Voltage (V)

SETTLING TIME vs CLOSED-LOOP GAIN

	100	VS = ± 15V, 10V Step
		CL = 1500pF
		RL = 2kΩ
( s)		OPA227
Time
	10	0.01%
		0.1%
Settling
			OPA228
			0.01%	0.1%
	1
	± 1	± 10		± 100

Gain (V/V)

CHANGE IN INPUT BIAS CURRENT vs COMMON-MODE VOLTAGE

	1.5	Curve shows normalized change in bias current
	1.0	with respect to VCM = 0V. Typical IB may range
		from –2nA to +2nA at VCM = 0V.

	0.5
(nA)	0				VS = ± 15V
B
∆ I
	–0.5			VS = ± 5V
	–1.0
	–1.5
	–15	–10	–5	0	5	10	15

Common-Mode Voltage (V)

OUTPUT VOLTAGE SWING vs OUTPUT CURRENT

	15						V+
	14						(V+) –1V
(V)	13					–40° C	(V+) –2V
	12		125° C				(V+) –3V
Swing
	11		85° C			–55° C
	10		25° C
Voltage
	–10					–55° C
	–11		85° C
Output
	–12		125° C			–40° C	(V–) +3V
					25° C
	–13						(V–) +2V
	–14						(V–) +1V
	–15						V–
	0	10	20	30	40	50	60
			Output Current (mA)

	OPA227, 2227, 4227
8	OPA228, 2228, 4228

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SBOS110A