BURR-BROWN OPA124 User Manual

查询OPA124供应商

®

Low Noise Precision

OPERATIONAL AMPLIFIER

FEATURES

● LOW NOISE: 6nV/√Hz (10kHz)

● LOW BIAS CURRENT: 1pA max

● LOW OFFSET: 250

● LOW DRIFT: 2

● HIGH OPEN-LOOP GAIN: 120dB min

● HIGH COMMON-MODE REJECTION:

100dB min

● AVAILABLE IN 8-PIN PLASTIC DIP

AND 8-PIN SOIC PACKAGES

DESCRIPTION

The OPA124 is a precision monolithic FET opera­tional amplifier using a
manufacturing process. Outstanding DC and AC per­formance characteristics allow its use in the most
critical instrumentation applications.

Bias current, noise, voltage offset, drift, open-loop
gain, common-mode rejection and power supply re­jection are superior to BIFET and CMOS amplifiers.

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. This cascode design also
allows high precision input specifications and reduced
susceptibility to flicker noise. Laser trimming of thin­film resistors gives very low offset and drift.

Compared to the popular OPA111, the OPA124 gives
comparable performance and is available in an 8-pin
PDIP and 8-pin SOIC package.

BIFET® National Semiconductor Corp.,

®

Difet

Burr-Brown Corp.

µV max

µV/°C max

Difet

(dielectrical isolation)

OPA124

OPA124

Difet

APPLICATIONS

● PRECISION PHOTODIODE PREAMP

● MEDICAL EQUIPMENT

● OPTOELECTRONICS

● DATA ACQUISITION

● TEST EQUIPMENT

Substrate

8

–In

2

+In

3

(1)

Trim

1

(1)

Trim

5

NOTES: (1) Omitted on SOIC. (2) Patented.

Noise-Free Cascode

10kΩ

10kΩ

2kΩ

2kΩ

OPA124 Simplified Circuit

®

(2)

2kΩ

2kΩ

+V

CC

7

Output

6

–V

CC

4

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]

®

© 1993 Burr-Brown Corporation PDS-1203C Printed in U.S.A. March, 1998

1

OPA124

SPECIFICATIONS

ELECTRICAL

At V

= ±15VDC and TA = +25°C, unless otherwise noted.

CC

OPA124U, P OPA124UA, PA OPA124PB
PARAMETER CONDITION MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS
INPUT NOISE

Voltage,f

Current, f

OFFSET VOLTAGE

Input Offset Voltage VCM = 0VDC ±200 ±800 ±150 ±500 ±100 ±250 µV
vs Temperature T
Supply Rejection V
vs Temperature T

BIAS CURRENT

Input Bias Current VCM = 0VDC ±1 ±5 ±0.5 ±2 ±0.35 ±1pA

OFFSET CURRENT

Input Offset Current VCM = 0VDC ±1 ±5 ±0.5 ±1 ±0.25 ±0.5 pA

IMPEDANCE

Differential 10
Common-Mode 10

VOLTAGE RANGE

Common-Mode Input Range ±10 ±11 ✻✻ ✻✻ V
Common-Mode Rejection V
vs Temperature T

OPEN-LOOP GAIN, DC

Open-Loop Voltage Gain R

FREQUENCY RESPONSE

Unity Gain, Small Signal 1.5 ✻✻MHz
Full Power Response 20Vp-p, R
Slew Rate V
THD 0.0003 ✻✻%
Settling Time, 0.1% Gain = –1, R

0.01% 10V Step 10 ✻✻µs
Overload Recovery,
50% Overdrive

RATED OUTPUT

Voltage Output R
Current Output V
Output Resistance DC, Open Loop 100 ✻✻Ω
Load Capacitance Stability Gain = +1 1000 ✻✻pF
Short Circuit Current 10 40 ✻✻ ✻✻ mA

POWER SUPPLY

Rated Voltage ±15 ✻✻VDC
Voltage Range, Derated ±5 ±18 ✻✻✻✻VDC
Current, Quiescent I

TEMPERATURE RANGE

Specification T
Storage –65 +125 ✻✻✻✻°C

θ

Junction-Ambient: PDIP 90 ✻✻°C/W

SOIC 100 ✻✻°C/W

✻ Specification same as OPA124U, P
NOTES: (1) Offset voltage, offset current, and bias current are measured with the units fully warmed up. For performance at other temperatures see Typical Performance

Curves. (2) Overload recovery is defined as the time required for the output to return from saturation to linear operation following the removal of a 50% input overdrive.
(3) For performance at other temperatures see Typical Performance Curves. (4) Sample tested, 98% confidence. (5) Guaranteed by design.

(4)

= 10Hz

O

f

O

f

O

f

O

f

B

f

B
B

f

O

(4)

= 100Hz

(4)

= 1kHz

(5)

= 10kHz
= 10Hz to 10kHz

(5)

= 0.1Hz to 10Hz 1.6 3.3 ✻✻ ✻✻µVp-p
= 0.1Hz to 10Hz 9.5 15 ✻✻ ✻✻fAp-p
= 0.1Hz thru 20kHz 0.5 0.8 ✻✻ ✻✻fA/√Hz

(1)

= T

to T

A

MIN

= ±10V to ±18V 88 110 90 ✻ 100 ✻ dB

CC

= T

(1)

(1)

(2)

A

IN

= T

A

= ±10V, RL = 2kΩ 1 1.6 ✻✻ ✻✻ V/µs

O

O

O

MAX

MIN

to T

MAX

84 100 86 ✻ 90 ✻ dB

= ±10VDC 92 110 94 ✻ 100 ✻ dB

to T

MIN

MAX

≥ 2kΩ 106 125 ✻✻ 120 ✻ dB

L

= 2kΩ 16 32 ✻✻ ✻✻ kHz

L

= 2kΩ 6 ✻✻µs

L

86 100 ✻✻ 90 ✻ dB

Gain = –1 5 ✻✻µs

= 2kΩ±11 ±12 ✻✻ ✻✻ V

L

= ±10VDC ±5.5 ±10 ✻✻ ✻✻ mA

= 0mADC 2.5 3.5 ✻✻ ✻✻mA

MIN

and T

MAX

–25 +85 ✻✻✻✻°C

40 80 ✻✻ ✻✻nV/√Hz
15 40 ✻✻ ✻✻nV/√Hz

815 ✻✻ ✻✻nV/√Hz
68 ✻✻ ✻✻nV/√Hz

0.7 1.2 ✻✻ ✻✻µVrms

±4 ±7.5 ±2 ±4 ±1 ±2 µV/°C

13

|| 1 ✻✻Ω || pF

14

|| 3 ✻✻Ω || pF

®

OPA124

2

CONNECTION DIAGRAMS

Top View DIP

Top View SOIC

Offset Trim

–In
+In

–V

1

–V

NC
–In
+In

2
3
4

S

NC = No Connect

1
2
3
4

S

8
7
6
5

Substrate
+V

S

Output
Offset Trim

8
7
6
5

Substrate
+V

S

Output
NC

PACKAGE/ORDERING INFORMATION

PRODUCT PACKAGE DRAWING NUMBER

OPA124U 8-Lead SOIC 182 –25°C to +85°C 5 7.5
OPA124P 8-Pin Plastic DIP 006 –25°C to +85°C 5 7.5
OPA124UA 8-Lead SOIC 182 –25°C to +85°C2 4
OPA124PA 8-Pin Plastic DIP 006 –25°C to +85°C2 4
OPA124PB 8-Pin Plastic DIP 006 –25°C to +85°C1 2

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

ABSOLUTE MAXIMUM RATINGS

Supply ........................................................................................... ±18VDC

Internal Power Dissipation
Differential Input Voltage
Input Voltage Range

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

Operating Temperature Range ....................................... –40°C to +125°C

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

Output Short Circuit Duration

Junction Temperature .................................................................... +175°C

NOTES: (1) Stresses above these ratings may cause permanent damage.
(2) Packages must be derated based on
for SOIC. (3) For supply voltages less than ±18VDC, the absolute maximum
input voltage is equal to +18V > V
may be to power supply common only. Rating applies to +25°C ambient.
Observe dissipation limit and T

(2)

......................................................... 750mW

(3)

..........................................................±36VDC

(3)

.................................................................±18VDC

(4)

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

> –VCC – 6V. See Figure 2. (4) Short circuit

IN

.

J

(1)

θ

= 90°C/W for PDIP and 100°C/W

JA

PACKAGE TEMPERATURE CURRENT DRIFT

(1)

RANGE pA, max µV/° C, max

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.

BIAS OFFSET

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.

3

OPA124

®