TEXAS INSTRUMENTS OPA637 Technical data

Difet

®

OPA627

OPA627

Precision High-Speed

®

OPERATIONAL AMPLIFIERS

OPA627
OPA637

FEATURES

● VERY LOW NOISE: 4.5nV/√Hz at 10kHz

● FAST SETTLING TIME:

OPA627—550ns to 0.01%
OPA637—450ns to 0.01%

● LOW V

● LOW DRIFT: 0.8

● LOW I

: 100µV max

OS

: 5pA max

B

µV/°C max

● OPA627: Unity-Gain Stable

● OPA637: Stable in Gain

≥ 5

DESCRIPTION

The OPA627 and OPA637
ers provide a new level of performance in a precision
FET op amp. When compared to the popular OPA111
op amp, the OPA627/637 has lower noise, lower offset
voltage, and much higher speed. It is useful in a broad
range of precision and high speed analog circuitry.

The OPA627/637 is fabricated on a high-speed, dielec­trically-isolated complementary NPN/PNP process. It
operates over a wide range of power supply voltage—
±4.5V to ±18V. Laser-trimmed
provides high accuracy and low-noise performance
comparable with the best bipolar-input op amps.

Difet

operational amplifi-

Difet

input circuitry

APPLICATIONS

● PRECISION INSTRUMENTATION

● FAST DATA ACQUISITION

● DAC OUTPUT AMPLIFIER

● OPTOELECTRONICS

● SONAR, ULTRASOUND

● HIGH-IMPEDANCE SENSOR AMPS

● HIGH-PERFORMANCE AUDIO CIRCUITRY

● ACTIVE FILTERS

High frequency complementary transistors allow in­creased circuit bandwidth, attaining dynamic perform­ance not possible with previous precision FET op
amps. The OPA627 is unity-gain stable. The OPA637
is stable in gains equal to or greater than five.

Difet

fabrication achieves extremely low input bias
currents without compromising input voltage noise
performance. Low input bias current is maintained
over a wide input common-mode voltage range with
unique cascode circuitry.

The OPA627/637 is available in plastic DIP, SOIC
and metal TO-99 packages. Industrial and military
temperature range models are available.

SBOS165

7

Trim

1

+In

3

®

Difet

, Burr-Brown Corp.

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/ • FAXLine: [phone] (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: [phone] • Immediate Product Info: [phone]

©1989 Burr-Brown Corporation PDS-998H Printed in U.S.A. March, 1998

Trim

5

–In
2

+V

S

Output
6

–V

S

4

SPECIFICATIONS

ELECTRICAL

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

OPA627BM, BP, SM OPA627AM, AP, AU

OPA637BM, BP, SM OPA637AM, AP, AU
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
OFFSET VOLTAGE

Input Offset Voltage 40 100 130 250 µV

AP, BP, AU Grades 100 250 280 500 µV

Average Drift 0.4 0.8 1.2 2 µV/°C

AP, BP, AU Grades 0.8 2 2.5 µV/°C

Power Supply Rejection VS = ±4.5 to ±18V 106 120 100 116 dB

INPUT BIAS CURRENT

Input Bias Current VCM = 0V 1 5 2 10 pA

Over Specified Temperature V

SM Grade V

Over Common-Mode Voltage V

Input Offset Current V

Over Specified Temperature V

SM Grade 50 nA

NOISE

Input Voltage Noise

Noise Density: f = 10Hz 15 40 20 nV/√Hz

Voltage Noise, BW = 0.1Hz to 10Hz 0.6 1.6 0.8 µVp-p

Input Bias Current Noise

Noise Density, f = 100Hz 1.6 2.5 2.5 fA/√Hz
Current Noise, BW = 0.1Hz to 10Hz 30 60 48 fAp-p

INPUT IMPEDANCE

Differential 10
Common-Mode 10

INPUT VOLTAGE RANGE

Common-Mode Input Range ±11 ±11.5 * * V

Over Specified Temperature ±10.5 ±11 * * V

Common-Mode Rejection V

OPEN-LOOP GAIN

Open-Loop Voltage Gain V

Over Specified Temperature V

SM Grade V

FREQUENCY RESPONSE

Slew Rate: OPA627 G = –1, 10V Step 40 55 * * V/µs
Settling Time: OPA627 0.01% G = –1, 10V Step 550 * ns

Gain-Bandwidth Product: OPA627 G = 1 16 * MHz
Total Harmonic Distortion + Noise G = +1, f = 1kHz 0.00003 * %

POWER SUPPLY

Specified Operating Voltage ±15 * V
Operating Voltage Range ±4.5 ±18 * * V
Current ±7 ±7.5 * * mA

OUTPUT

Voltage Output R

Over Specified Temperature ±11 ±11.5 * * V
Current Output V
Short-Circuit Current ±35 +70/–55 ±100***mA
Output Impedance, Open-Loop 1MHz 55 * Ω

TEMPERATURE RANGE

Specification: AP, BP, AM, BM, AU –25 +85 * * °C
Storage: AM, BM, SM –60 +150 * * °C

AP, BP, AU –40 +125 * * °C

θ

: AM, BM, SM 200 * ° C/W

J-A

AP, BP 100 * °C/W
AU 160 °C/W

* Specifications same as “B” grade.
NOTES: (1) Offset voltage measured fully warmed-up. (2) High-speed test at T

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.

(1)

(2)

= 0V 1 2 nA

CM

= 0V 50 nA

CM

= ±10V 1 2 pA

CM

= 0V 0.5 5 1 10 pA

CM

= 0V 1 2 nA

CM

f = 100Hz 8 20 10 nV/√Hz
f = 1kHz 5.2 8 5.6 nV/√Hz
f = 10kHz 4.5 6 4.8 nV/√Hz

13

|| 8 * Ω || pF

13

|| 7 * Ω || pF

= ±10.5V 106 116 100 110 dB

CM

= ±10V, RL = 1kΩ 112 120 106 116 dB

O

= ±10V, RL = 1kΩ 106 117 100 110 dB

O

= ±10V, RL = 1kΩ 100 114 dB

O

OPA637 G = –4, 10V Step 100 135 * * V/µs

0.1% G = –1, 10V Step 450 * ns

OPA637 0.01% G = –4, 10V Step 450 * ns

0.1% G = –4, 10V Step 300 * ns
OPA637 G = 10 80 * MHz

= 1kΩ±11.5 ±12.3 * *

L

= ±10V ±45 * mA

O

SM –55 +125 °C

= +25°C. See Typical Performance Curves for warmed-up performance.

J

®

OPA627, 637

2

PIN CONFIGURATIONS

Top View

Offset Trim

Top View

Case connected to –V

1

–In

2

+In

3

–V

4

S

Offset Trim

–In

No Internal Connection

1

2

3

+In

.

S

ELECTROSTATIC

–V

8

No Internal Connection

7

+V

6

Output

5

Offset Trim

8

4

S

S

+V

7

6

5

Offset Trim

S

Output

DIP/SOIC

TO-99

ABSOLUTE MAXIMUM RATINGS

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

Input Voltage Range .............................................. +V

Differential Input Range ....................................................... Total V

Power Dissipation ........................................................................ 1000mW

Operating Temperature

M Package .................................................................. –55°C to +125°C

P, U Package ............................................................. –40°C to +125°C

Storage Temperature

M Package .................................................................. –65°C to +150°C

P, U Package ............................................................. –40°C to +125°C

Junction Temperature

M Package .................................................................................. +175°C

P, U Package ............................................................................. +150°C

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

SOlC (soldering, 3s) ................................................................... +260°C

NOTE: (1) Stresses above these ratings may cause permanent damage.

(1)

+ 2V to –VS – 2V

S

+ 4V

S

PACKAGE/ORDERING INFORMATION

PRODUCT PACKAGE NUMBER

PACKAGE DRAWING TEMPERATURE

OPA627AP Plastic DIP 006 –25°C to +85°C
OPA627BP Plastic DIP 006 –25°C to +85°C
OPA627AU SOIC 182 –25°C to +85°C
OPA627AM TO-99 Metal 001 –25°C to +85°C
OPA627BM TO-99 Metal 001 –25°C to +85°C
OPA627SM TO-99 Metal 001 –55°C to +125°C

OPA637AP Plastic DIP 006 –25°C to +85°C
OPA637BP Plastic DIP 006 –25°C to +85°C
OPA637AU SOIC 182 –25°C to +85°C
OPA637AM TO-99 Metal 001 –25°C to +85°C
OPA637BM TO-99 Metal 001 –25°C to +85°C
OPA637SM TO-99 Metal 001 –55°C to +125°C

NOTE: (1) For detailed drawing and dimension table, please see end of data
sheet, or Appendix C of Burr-Brown IC Data Book.

(1)

RANGE

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.

®

3

OPA627, 637

TYPICAL PERFORMANCE CURVES

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

INPUT VOLTAGE NOISE SPECTRAL DENSITY

1k

√

100

10

Voltage Noise (nV/ Hz)

1

1

10 100 1k 10k 100k 1M 10M

1k

√

100

10

Voltage Noise (nV/ Hz)

VOLTAGE NOISE vs SOURCE RESISTANCE

–
+

R

S

OPA627 + Resistor

1

100

1k 10k 100k 1M 10M 100M

Frequency (Hz)

Resistor Noise Only

Source Resistance ( )

Comparison with

OPA27 Bipolar Op

Amp + Resistor

Spot Noise
at 10kHz

Ω

TOTAL INPUT VOLTAGE NOISE vs BANDWIDTH

100

Noise Bandwidth:

0.1Hz to indicated

10

frequency.

1

0.1

Input Voltage Noise (µV)

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

OPEN-LOOP GAIN vs FREQUENCY

140
120
100

80
60
40

Voltage Gain (dB)

20

0

–20

1 10 100 1k 10k 100k 1M 10M 100M

RMS

Bandwidth (Hz)

OPA627

Frequency (Hz)

p-p

OPA637

30

20

10

Gain (dB)

0

–10

OPA627 GAIN/PHASE vs FREQUENCY

1

®

OPA627, 637

Gain

Frequency (MHz)

75° Phase

Margin

10 100

Phase

–90

–120

–150

–180

–210

Gain (dB)

Phase (Degrees)

–10

4

30

20

10

0

1 10 100

OPA637 GAIN/PHASE vs FREQUENCY

Phase

Gain

Frequency (MHz)

–90

–120

–150

Phase (Degrees)

–180

–210

TYPICAL PERFORMANCE CURVES (CONT)

OPEN-LOOP OUTPUT IMPEDANCE vs FREQUENCY

Frequency (Hz)

Output Resistance (Ω)

100

80

60

40

20

0

2 20 200 2k 20k 200k 2M 20M

POWER-SUPPLY REJECTION AND COMMON-MODE

REJECTION vs TEMPERATURE

Temperature (°C)

CMR and PSR (dB)

125

120

115

110

105

–75

PSR

CMR

–50 –25 0 25 50 75 100 125

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

125

120

115

Voltage Gain (dB)

110

105

–75 –50 –25 0 25 50 75 100 125

140

120

100

80

60

40

20

Common-Mode Rejection Ratio (dB)

0

OPEN-LOOP GAIN vs TEMPERATURE

Temperature (°C)

COMMON-MODE REJECTION vs FREQUENCY

OPA637

OPA627

1 10 100 1k 10k 100k 1M 10M

Frequency (Hz)

COMMON-MODE REJECTION vs

130

120

110

100

90

Common-Mode Rejection (dB)

80

–15 –10 –5 0 5 10 15

INPUT COMMON MODE VOLTAGE

Common-Mode Voltage (V)

140

120

100

Power-Supply Rejection (dB)

POWER-SUPPLY REJECTION vs FREQUENCY

80

60

40

20

0

1

10 100 1k 10k 100k 1M 10M

PSRR 627

+V

S

637

Frequency (Hz)

–VS PSRR 627

and 637

®

5

OPA627, 637

TYPICAL PERFORMANCE CURVES (CONT)

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

8

SUPPLY CURRENT vs TEMPERATURE

7.5

7

Supply Current (mA)

6.5

6

–75 –50 –25 0 25 50 75 100 125

Temperature (°C)

OPA627 GAIN-BANDWIDTH AND SLEW RATE

vs TEMPERATURE

24

20

Slew Rate

16

12

Gain-Bandwidth (MHz)

GBW

60

55

Slew Rate (V/µs)

100

OUTPUT CURRENT LIMIT vs TEMPERATURE

80

+IL at VO = 0V

at VO = +10V

+I

L

60

40

at VO = 0V

–I

Output Current (mA)

20

L

–IL at VO = –10V

0

–75 –50 –25 0 25 50 75 100 125

Temperature (°C)

OPA637 GAIN-BANDWIDTH AND SLEW RATE

vs TEMPERATURE

120

Slew Rate

100

80

GBW

Gain-Bandwidth (MHz)

60

160

140

120

100

Slew Rate (V/µs)

8

0.1

0.01

0.001

THD+N (%)

0.0001

0.00001

–50 –25 0 25 50 75 100 125

–75

Temperature (°C)

OPA627 TOTAL HARMONIC DISTORTION + NOISE

vs FREQUENCY

G = +1 G = +10

V

+

I

–

V

V = ±10V

I

O

ΩΩ

100pF

V = ±10V

+

O

–

600600

5k

Ω

Ω

549

100pF

Measurement BW: 80kHz

G = +10

G = +1

20 100 1k 10k 20k

Frequency (Hz)

®

OPA627, 637

50

40

–50 –25 0 25 50 75 100 125

–75

80

Temperature (°C)

OPA637 TOTAL HARMONIC DISTORTION + NOISE

vs FREQUENCY

1

0.1

0.01

THD+N (%)

G = +10

V

+

I

V = ±10V

O

–

Ω

5k

549

Ω

Measurement BW: 80kHz

G = +50

V

+

I

600

Ω

100pF

V = ±10V

O

–

600

Ω

Ω

5k

102

Ω

100pF

G = +50

0.001

0.0001

G = +10

20 100 1k 10k 20k

Frequency (Hz)

6