Burr Brown INA111BU, INA111BP, INA111AU-1K, INA111AU, INA111AP Datasheet

®

INA111

INA111

High Speed FET-Input

INSTRUMENT ATION AMPLIFIER

INA111

FEA TURES

● FET INPUT: IB = 20pA max

● HIGH SPEED: T

● LOW OFFSET VOLTAGE: 500

= 4µs (G = 100, 0.01%)

S

µV max

● LOW OFFSET VOLTAGE DRIFT:

µV/°C max

5

● HIGH COMMON-MODE REJECTION:

106dB min

● 8-PIN PLASTIC DIP, SOL-16 SOIC

APPLICATIONS

● MEDICAL INSTRUMENTATION

● DATA ACQUISITION

–

2

V

IN

(4)

1

(2)

R

G

8

(15)

+

3

V

IN

(5)

A

1

25kΩ

25kΩ

A

2

V+

DESCRIPTION

The INA111 is a high speed, FET-input instrumenta­tion amplifier offering excellent performance.

The INA111 uses a current-feedback topology provid­ing extended bandwidth (2MHz at G = 10) and fast
settling time (4µs to 0.01% at G = 100). A single
external resistor sets any gain from 1 to over 1000.

Offset voltage and drift are laser trimmed for excellent
DC accuracy. The INA111’s FET inputs reduce input
bias current to under 20pA, simplifying input filtering
and limiting circuitry.

The INA111 is available in 8-pin plastic DIP, and
SOL-16 surface-mount packages, specified for the
–40°C to +85°C temperature range.

(13)7

INA111

Feedback

10kΩ10kΩ

A

3

10kΩ10kΩ

(12)

6

(11)

5

(10)

DIP Connected

Internally

V

O

G = 1 +

Ref

50kΩ

R

G

DIP

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]

©

1992 Burr-Brown Corporation PDS-1143E Printed in U.S.A. March, 1998

V–

(7)4

(SOIC)

®

1

INA111

SPECIFICATIONS

ELECTRICAL

At TA = +25°C, VS = ±15V, RL = 2kΩ, unless otherwise noted.

INA111BP, BU INA111AP, AU
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
INPUT

Offset Voltage, RTI
Initial T
vs Temperature T
vs Power Supply V
Impedance, Differential 10
Common-Mode 10
Input Common-Mode Range V
Common-Mode Rejection V

BIAS CURRENT ±2 ±20 ✻✻pA
OFFSET CURRENT ±0.1 ±10 ✻✻pA
NOISE VOLTAGE, RTI G = 1000, R

f = 100Hz 13 ✻ nV/√Hz
f = 1kHz 10 ✻ nV/√Hz
f = 10kHz 10 ✻ nV/√Hz
f

= 0.1Hz to 10Hz 1 ✻ µVp-p

B

Noise Current
f = 10kHz 0.8 ✻ fA/√Hz

GAIN

Gain Equation 1 + (50kΩ/R
Range of Gain 1 10000 ✻✻V/V
Gain Error G = 1, R

Gain vs Temperature G = 1 ±1 ±10 ✻✻ppm/°C
50kΩ Resistance

(1)

Nonlinearity G = 1 ±0.0005 ±0.005 ✻✻% of FSR

OUTPUT

Voltage I
Load Capacitance Stability 1000 ✻ pF
Short Circuit Current +30/–25 ✻ mA

FREQUENCY RESPONSE

Bandwidth, –3dB G = 1 2 ✻ MHz

Slew Rate V
Settling Time, 0.01% G = 1 2 ✻ µs

Overload Recovery 50% Overdrive 1 ✻ µs

POWER SUPPLY

Voltage Range ±6 ±15 ±18 ✻✻ ✻ V
Current V

TEMPERATURE RANGE

Specification –40 85 ✻✻°C
Operating –40 125 ✻✻°C

θ

JA

✻ Specification same as INA111BP.
NOTE: (1) Temperature coefficient of the “50kΩ” term in the gain equation.

= +25°C ±100 ± 500/G ±500 ± 2000/G ±200 ± 500/G ±1000 ± 5000/G µV

A

= T

to T

A

MIN

= ±6V to ±18V 2 +10/G 30 + 100/G ✻✻µV/V

S

= ±10V, ∆RS = 1kΩ

CM

MAX

= 0V ±10 ±12 ✻✻ V

DIFF

±2 ± 10/G ±5 ± 100/G ±2 ± 20/G ±10 ± 100/G µV/°C

12

|| 6 ✻ Ω || pF

12

|| 3 ✻ Ω || pF

G = 1 80 90 75 ✻ dB

G = 10 96 110 90 ✻ dB

G = 100 106 115 100 ✻ dB

G = 1000 106 115 100 ✻ dB

= 0Ω

S

) ✻ V/V

G

= 10kΩ±0.01 ±0.02 ✻ 0.05 %

L

G = 10, R

G = 100, R

G = 1000, R

= 10kΩ±0.1 ±0.5 ✻✻%

L

= 10kΩ±0.15 ±0.5 ✻ ±0.7 %

L

= 10kΩ±0.25 ±1 ✻ ±2%

L

±25 ±100 ✻✻ppm/°C

G = 10 ±0.001 ±0.005 ✻ ± 0.01 % of FSR

G = 100 ±0.001 ±0.005 ✻ ±0.01 % of FSR

G = 1000 ±0.005 ±0.02 ✻ ±0.04 % of FSR

= 5mA, T

O

MIN

to T

±11 ±12.7 ✻✻ V

MAX

G = 10 2 ✻ MHz

G = 100 450 ✻ kHz

G = 1000 50 ✻ kHz

= ±10V, G = 2 to 100 17 ✻ V/µs

O

G = 10 2 ✻ µs

G = 100 4 ✻ µs

G = 1000 30 ✻ µs

= 0V ±3.3 ±4.5 ✻✻mA

IN

100 ✻ °C/W

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.

®

INA111

2

PIN CONFIGURATIONS

Top View DIP

ELECTROSTATIC
DISCHARGE SENSITIVITY

1

R

G

–

2

V

IN

+

3

V

IN

4

V–

Top View SOL-16 Surface Mount

1

NC

2

R

G

3

NC

–

4

V

IN

+

5

V

IN

6

NC

7

V–

8

NC

ABSOLUTE MAXIMUM RATINGS

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

Input Voltage Range .......................................... (V–) –0.7V to (V+) +15V

Output Short-Circuit (to ground) .............................................. Continuous

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

Storage Temperature ..................................................... –40°C to +125°C

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

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

NOTE: Stresses above these ratings may cause permanent damage.

8
7
6
5

(1)

R
V+
V
Ref

16
15
14
13
12
11
10

9

G

O

NC
R

G

NC
V+
Feedback
V

O

Ref
NC

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.

ORDERING INFORMATION

PRODUCT PACKAGE TEMPERATURE RANGE

INA111AP 8-Pin Plastic DIP –40°C to +85°C
INA111BP 8-Pin Plastic DIP –40°C to +85°C
INA111AU SOL-16 Surface-Mount –40°C to +85°C
INA111BU SOL-16 Surface-Mount –40°C to +85°C

PACKAGE INFORMATION

PRODUCT PACKAGE NUMBER

PACKAGE DRAWING

INA111AP 8-Pin Plastic DIP 006
INA111BP 8-Pin Plastic DIP 006
INA111AU 16-Pin Surface Mount 211
INA111BU 16-Pin Surface Mount 211

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

(1)

®

3

INA111

TYPICAL PERFORMANCE CURVES

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

10k

GAIN vs FREQUENCY

G = 1k

1k

100

10

Gain (V/V)

G = 100

G = 10

G = 1

1

0.1
1k 10k 100k 1M 10M

Frequency (Hz)

INPUT COMMON-MODE VOLTAGE RANGE

15

Limited by A

10

+ Output Swing

5

0

–5

Limited by A

– Output Swing

Common-Mode Voltage (V)

–10

–15

vs OUTPUT VOLTAGE

1

–

V

D/2

+
–

V

D/2

+

V

CM

(Any Gain)

A3 – Output
Swing Limit

2

Limited by A

+ Output Swing

V

O

A3 + Output
Swing Limit

Limited by A
– Output Swing

–15 –10 0 5 15–5

Output Voltage (V)

120

COMMON-MODE REJECTION vs FREQUENCY

100

80

G = 1k

60

G = 100

40

Common-Mode Rejection (dB)

20

G = 10

G = 1

0

10 100 1k 10k 100k 1M

Frequency (Hz)

120

2

100

POWER SUPPLY REJECTION vs FREQUENCY

80

60

40

1

Power Supply Rejection (dB)

20

G = 1k

G = 100
G = 10

G = 1

0

10

10 100 1k 10k 100k 1M

Frequency (Hz)

INPUT-REFERRED NOISE VOLTAGE vs FREQUENCY

1k

100

10

Input-Referred Noise Voltage (nV/√Hz)

1

1 10 100 1k 10k

Frequency (Hz)

®

INA111

G = 1

G = 10
G = 100, 1k

4

100

SETTLING TIME vs GAIN

10

Settling Time (µs)

0.01%

0.1%

1

1 10 100 1000

Gain (V/V)