TEXAS INSTRUMENTS OPA2227, OPA4227, OPA2228, OPA4228 Technical data

4227

A227

2227

SBOS110A – MAY 1998 – REVISED JANUARY 2005

High Precision, Low Noise

OPERA TIONAL AMPLIFIERS

OPA227

OPA2227 OPA4227

OPA228

OPA2228 OPA4228

FEATURES

● LOW NOISE: 3nV/√Hz

● WIDE BANDWIDTH:

OPA227: 8MHz, 2.3V/µs OPA228: 33MHz, 10V/

● 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: 75

µV 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

SPICE model available for OPA227 at www.ti.com

OPA227, OPA228

Trim

–In +In

V–

1 2 3 4

DIP-8, SO-8

NC = Not Connected

Trim

V+

Output

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.

Out A

–In A +In A

V–

OPA2227, OPA2228

2 3 4

DIP-8, SO-8

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 pin-for-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 perchannel 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.

OPA4227, OPA4228

Out A

–In A

+In A

V+

Out B

–In B

+In B

V+ +In B –In B

Out B

3 4 5

6 7

DIP-14, SO-14

14 13 12 11 10

9 8

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

PRODUCTION DATA information is current as of publication date. 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, T

PARAMETER CONDITION MIN TYP MAX MIN TYP MAX UNITS OFFSET VOLTAGE

Input Offset Voltage V

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

vs Temperature dV vs Power Supply PSRR V

= –40°C to +85°C ±2 ✻ µV/V

vs Time 0.2 ✻ µV/mo

/dT ±0.1 ±0.6 ±0.3 ±2 µV/°C

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

INPUT BIAS CURRENT

Input Bias Current I

= –40°C to +85°C ±10 ✻ nA

Input Offset Current I

= –40°C to +85°C ±10 ✻ nA

NOISE

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

f = 100Hz 3 ✻ nV/√Hz

f = 1kHz 3 ✻ nV/√Hz

Current Noise Density, f = 1kHz i

INPUT VOLTAGE RANGE

Common-Mode Voltage Range V Common-Mode Rejection CMRR V

= –40°C to +85°C 120 ✻ dB

INPUT IMPEDANCE

Differential 10 Common-Mode V

OPEN-LOOP GAIN

Open-Loop Voltage Gain A

= –40°C to +85°C 132 ✻ dB

= (V–)+2V to (V+)–2V, RL = 10kΩ

OLVO

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

TA = –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

0.01% G = 1, 10V Step, C Overload Recovery Time VIN • G = V Total Harmonic Distortion + Noise THD+N f = 1kHz, G = 1, V

OUTPUT

Voltage Output R

= –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

Short-Circuit Current I Capacitive Load Drive C

LOAD

POWER SUPPLY

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

= –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

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.

= –40°C to +85°C.

OPA227PA, UA

OPA227P, U OPA2227PA, UA

OPA2227P, U OPA4227PA, UA

±5 ±75 ±10 ±200 µV

= ±2.5V to ±18V ±0.5 ±2 ✻✻µV/V

f = 1kHz, R

= 5kΩ 110 ✻ dB

±2.5 ±10 ✻✻nA ±2.5 ±10 ✻✻nA

15 ✻ nVrms

3.5 ✻ nV/√Hz

0.4 ✻ pA/√Hz

(V–)+2 (V+)–2 ✻✻V

= (V–)+2V to (V+)–2V 120 138 ✻✻ dB

|| 12 ✻ Ω || pF

= (V–)+2V to (V+)–2V 109 || 3 ✻ Ω || pF

132 160 ✻✻ dB 132 160 ✻✻ dB

= 100pF 5 ✻ µs

= 100pF 5.6 ✻ µs

= 3.5Vrms 0.00005 ✻ %

= 10kΩ (V–)+2 (V+)–2 ✻✻V

= 600Ω (V–)+3.5 (V+)–3.5 ✻✻V

1.3 ✻ µs

±45 ✻ mA

See Typical Curve ✻

±5 ±15 ✻✻V

IO = 0 ±3.7 ±3.8 ✻✻mA

OPA227, 2227, 4227

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OPA228, 2228, 4228

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, T

PARAMETER CONDITION MIN TYP MAX MIN TYP MAX UNITS OFFSET VOLTAGE

Input Offset Voltage V

= –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

= –40°C to +85°C ±2 ✻ µV/V

vs Time 0.2 ✻ µV/mo

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

INPUT BIAS CURRENT

Input Bias Current I

= –40°C to +85°C ±10 ✻ nA

Input Offset Current I

= –40°C to +85°C ±10 ✻ nA

NOISE

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

f = 100Hz 3 ✻ nV/√Hz

f = 1kHz 3 ✻ nV/√Hz

Current Noise Density, f = 1kHz i

INPUT VOLTAGE RANGE

Common-Mode Voltage Range V Common-Mode Rejection CMRR V

= –40°C to +85°C 120 ✻ dB

INPUT IMPEDANCE

Differential 10 Common-Mode VCM = (V–)+2V to (V+)–2V 109 || 3 ✻ Ω || pF

OPEN-LOOP GAIN

Open-Loop Voltage Gain A

= –40°C to +85°C 132 ✻ dB

= (V–)+2V to (V+)–2V, RL = 10kΩ

OLVO

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

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%

0.01%

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

G = 5, 10V Step, CL = 100pF, CF =12pF Overload Recovery Time VIN • G = V Total Harmonic Distortion + Noise THD+N f = 1kHz, G = 5, V

OUTPUT

Voltage Output R

= –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

Short-Circuit Current I Capacitive Load Drive C

LOAD

POWER SUPPLY

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

= –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

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.

= –40°C to +85°C.

OPA228PA, UA

OPA228P, U OPA2228PA, UA

OPA2228P, U OPA4228PA, UA

±5 ±75 ±10 ±200 µV

= ±2.5V to ±18V ±0.5 ±2 ✻✻µV/V

f = 1kHz, R

= 5kΩ 110 ✻ dB

±2.5 ±10 ✻✻nA ±2.5 ±10 ✻✻nA

15 ✻ nVrms

3.5 ✻ nV/√Hz

0.4 ✻ pA/√Hz

(V–)+2 (V+)–2 ✻✻V

= (V–)+2V to (V+)–2V 120 138 ✻✻ dB

|| 12 ✻ Ω || pF

132 160 ✻✻ dB 132 160 ✻✻ dB

1.5 ✻ µs 2 ✻ µs

= 3.5Vrms 0.00005 ✻ %

= 10kΩ (V–)+2 (V+)–2 ✻✻V

= 600Ω (V–)+3.5 (V+)–3.5 ✻✻V

0.6 ✻ µs

±45 ✻ mA

See Typical Curve ✻

±5 ±15 ✻✻V

IO = 0 ±3.7 ±3.8 ✻✻mA

OPA227, 2227, 4227 OPA228, 2228, 4228

SBOS110A

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ABSOLUTE MAXIMUM RATINGS

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

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

Output Short-Circuit

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.

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

(2)

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

(1)

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.

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

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OPA228, 2228, 4228

SBOS110A

TYPICAL PERFORMANCE CURVES

0.1 101 100 1k 10k

100k

10k

100

Voltage Noise (nV/√Hz)

Current Noise (fA/√Hz)

Frequency (Hz)

INPUT VOLTAGE AND CURRENT NOISE

SPECTRAL DENSITY vs FREQUENCY

Current Noise

Voltage Noise

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

OPEN-LOOP GAIN/PHASE vs FREQUENCY

OPA227

0.01 0.10 1 10 100 1k 10k 100k 1M 10M 100M Frequency (Hz)

POWER SUPPLY AND COMMON-MODE

REJECTION RATIO vs FREQUENCY

+CMRR

+PSRR

(dB)

140

120

100

180 160 140 120 100

80 60 40 20

–20

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

180 160 140 120 100

(dB)

Phase (°)

60 40 20

–20

OPEN-LOOP GAIN/PHASE vs FREQUENCY

OPA228

0.01 0.10 1 10 100 1k 10k 100k 1M 10M 100M Frequency (Hz)

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

Phase (°)

PSRR, CMRR (dB)

-20

–0

0.01

0.001

0.0001

THD+Noise (%)

0.00001

10.1 10 100 1k 10k 100k 1M

TOTAL HARMONIC DISTORTION + NOISE

G = 1, RL = 10kΩ

20 100 1k 10k 20k

–PSRR

Frequency (Hz)

vs FREQUENCY V

= 3.5Vrms

OUT

Frequency (Hz)

OPA227

0.01

0.001

0.0001

THD+Noise (%)

0.00001 20 100 1k 10k 50k

TOTAL HARMONIC DISTORTION + NOISE

G = 1, RL = 10kΩ

vs FREQUENCY V

= 3.5Vrms

OUT

Frequency (Hz)

OPA228

OPA227, 2227, 4227 OPA228, 2228, 4228

SBOS110A

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TYPICAL PERFORMANCE CURVES (CONT)

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

50nV/div

INPUT NOISE VOLTAGE vs TIME

1s/div

VOLTAGE NOISE DISTRIBUTION (10Hz)

140

120

100

Channel Separation (dB)

17.5

15.0

12.5

10.0

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.

10 100 1k 10k 100k 1M

Frequency (Hz)

OFFSET VOLTAGE PRODUCTION DISTRIBUTION

Typical distribution of packaged units.

Percent of Units (%)

3.160 3.25 3.34 3.43 3.51 3.60 3.69 3.78 Noise (nV/√Hz)

OFFSET VOLTAGE DRIFT PRODUCTION DISTRIBUTION

Percent of Amplifiers (%)

0 0.5 1.0 1.5

Offset Voltage Drift (µV)/°C

Typical distribution of packaged units.

5.5

5.0

Percent of Amplifiers (%)

2.5

–90

–75

–60

–150

–135

–120

–105

8 6 4 2 0

–2 –4 –6

Offset Voltage Change (µV)

–8

–10

0 100 150 300

WARM-UP OFFSET VOLTAGE DRIFT

50 200 250

Time from Power Supply Turn-On (s)

–45

Offset Voltage (µV)

–30

–15

1530456075

105

120

135

150

OPA227, 2227, 4227

www.ti.com

OPA228, 2228, 4228

SBOS110A

TYPICAL PERFORMANCE CURVES (CONT)

–75 –50 –25 0 25 50 75 100 125

Short-Circuit Current (mA)

Temperature (°C)

SHORT-CIRCUIT CURRENT vs TEMPERATURE

–I

–75 –50 –25 0 25 50 75 100 125

160 150 140 130 120 110 100

90 80 70 60

, CMRR, PSRR (dB)

Temperature (°C)

, CMRR, PSRR vs TEMPERATURE

CMRR

PSRR

OPA228

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

, CMRR, PSRR vs TEMPERATURE

OPA227

PSRR

CMRR

Temperature (°C)

160 150 140 130 120 110 100

, CMRR, PSRR (dB)

80 70 60

–75 –50 –25 0 25 50 75 100 125

2.0

1.5

1.0

0.5 0

–0.5 –1.0

Input Bias Current (nA)

–1.5 –2.0

5.0

4.5

4.0

3.5

INPUT BIAS CURRENT vs TEMPERATURE

–60

–20 0 20 40 60 80 100 120 140

–40

QUIESCENT CURRENT vs TEMPERATURE

Temperature (°C)

±18V ±15V ±12V ±10V

±5V ±2.5V

3.8

QUIESCENT CURRENT vs SUPPLY VOLTAGE

3.6

3.4

3.2

Quiescent Current (mA)

3.0

2.5

–60 –40 –20 0 20 40 60 80

OPA227, 2227, 4227 OPA228, 2228, 4228

SBOS110A

Temperature (°C)

Quiescent Current (mA)

3.0

2.8

100 120 140

0 2 4 6 8 1012141618

Supply Voltage (±V)

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TYPICAL PERFORMANCE CURVES (CONT)

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

3.0

SLEW RATE vs TEMPERATURE

OPA227

2.5

Positive Slew Rate

2.0

1.5

1.0

Slew Rate (µV/V)

0.5

–75 –50 –25 0 25 50 75 100

Temperature (°C)

CHANGE IN INPUT BIAS CURRENT

2.0

1.5

1.0

0.5 0

(nA)

∆I

–0.5 –1.0 –1.5 –2.0

0 5 10 15 20 25 30 35 40

vs POWER SUPPLY VOLTAGE

Curve shows normalized change in bias current with respect to V from –2nA to +2nA at V

= ±10V. Typical IB may range

Supply Voltage (V)

Negative Slew Rate

= ±10V.

LOAD

= 2kΩ

= 100pF

125

SLEW RATE vs TEMPERATURE

OPA228

Slew Rate (µV/V)

–75 –50 –25 0 25 50 75 100

Temperature (°C)

CHANGE IN INPUT BIAS CURRENT

1.5

1.0

0.5

(nA)

∆I

–0.5

–1.0

–1.5

–15 –10 –50 510

vs COMMON-MODE VOLTAGE

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

Common-Mode Voltage (V)

VS = ±5V

= 0V.

LOAD

VS = ±15V

LOAD

= 2kΩ

= 100pF

125

100

SETTLING TIME vs CLOSED-LOOP GAIN

VS = ±15V, 10V Step C

= 1500pF

= 2kΩ

OPA227

0.01%

Settling Time (µs)

±1 ±10 ±100

0.1%

Gain (V/V)

OPA228

0.01%

0.1%

Output Voltage Swing (V)

OUTPUT VOLTAGE SWING vs OUTPUT CURRENT

15 14 13 12 11 10

–10 –11 –12 –13 –14 –15

0 102030405060

125°C

85°C

125°C

Output Current (mA)

25°C

85°C

25°C

–40°C

–55°C

–40°C

V+ (V+) –1V (V+) –2V (V+) –3V

(V–) +3V (V–) +2V (V–) +1V V–

OPA227, 2227, 4227

www.ti.com

OPA228, 2228, 4228

SBOS110A

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