Burr Brown INA101SM, INA101KU-1K, INA101KU, INA101HP, INA101CM Datasheet

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Internet: http://www.burr-brown.com/ • FAXLine: [phone] (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: [phone] • Immediate Product Info: [phone]

FEATURES

● LOW DRIFT: 0.25µV/°C max

● LOW OFFSET VOLTAGE: 25µV max

● LOW NONLINEARITY: 0.002%

● LOW NOISE: 13nV/√Hz

● HIGH CMR: 106dB AT 60Hz

● HIGH INPUT IMPEDANCE: 10

10

Ω

● 14-PIN PLASTIC, CERAMIC DIP,

SOL-16, AND TO-100 PACKAGES

High Accuracy

INSTRUMENTATION AMPLIFIER

APPLICATIONS

● STRAIN GAGES

● THERMOCOUPLES

● RTDs

● REMOTE TRANSDUCERS

● LOW-LEVEL SIGNALS

● MEDICAL INSTRUMENTATION

The INA101 is packaged in TO-100 metal, 14-pin
plastic and ceramic DIP, and SOL-16 surface-mount
packages. Commercial, industrial and military tem­perature range models are available.

®

DESCRIPTION

The INA101 is a high accuracy instrumentation ampli­fier designed for low-level signal amplification and
general purpose data acquisition. Three precision op
amps and laser-trimmed metal film resistors are inte­grated on a single monolithic integrated circuit.

INA101

A

1

A

2

A

3

8

7

10kΩ10kΩ

10kΩ10kΩ

2

9

5

4

1

10

–Input

+Input

R

G

Offset

Adj.

+V

CC

INA101

Common

Output

20kΩ

20kΩ

3

–V

CC

6

TO-100 PACKAGE

A

1

A

2

A

3

1

14

10kΩ10kΩ

10kΩ10kΩ

6

2

12

11

4

3

–Input

+Input

R

G

Offset

Adj.

+V

CC

INA101

Common

Output

20kΩ

20kΩ

7

–V

CC

13

DIP PACKAGE

A1 Output

8

A

2

Output

9

10

5

Gain Sense 1
Gain Set 1

Gain Set 2

Gain Sense 2

1kΩ

1kΩ

1kΩ

1kΩ

©1981 Burr-Brown Corporation PDS-454K Printed in U.S.A. July, 1998

®

INA101

2

SPECIFICATIONS

ELECTRICAL

At +25°C with ±15VDC power supply and in circuit of Figure 1, unless otherwise noted.

INA101AM, AG INA101SM, SG INA101CM, CG INA101HP, KU
PARAMETER MIN TYP MAX MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS
GAIN

Range of Gain 1 1000 * * * * * * V/V
Gain Equation G = 1 + (40k/RG) * * * V/V
Error from Equation, DC

(1)

±(0.04 + 0.00016G ±(0.1 + 0.0003G * * * * ±(0.1 + ±(0.3 + %

–0.02/G) –0.05/G) 0.00015G) 0.0002G)

–0.05/G –0.10/G

Gain Temp. Coefficient

(3)

G = 1 2 5 * * * * * * ppm/°C
G = 10 20 100 * * 10 * * * ppm/°C
G = 100 22 110 * * 11 * * * ppm/°C
G = 1000 22 110 * * 11 * * * ppm/°C

Nonlinearity, DC

(2)

±(0.002 + 10–5 G) ±(0.005 + 2 x 10–5 G) ±(0.001 ±(0.002 ±(0.001 ±(0.002 * * % of p-p FS

+10–5 G) +10

–5

G) +10

–5

G) +10

–5

G)

RATED OUTPUT

Voltage ±10 ±12.5 * * * * * * V
Current ±5 ±10 * * * * * * mA
Output Impedance 0.2 * * * Ω
Capacitive Load 1000 * * * pF

INPUT OFFSET VOLTAGE

Initial Offset at +25°C ±(25 + 200/G) ±(50 + 400/G) ±10+ ±(25 ±(10+ ±(25 + ±(125 + ±(250 + µV

100/G) +200/G) 100/G) 200/G) 450/G) 900/G)

vs Temperature ±(2 + 20/G) ±(0.75 ±(0.25 + ±(2 + 20/G) µV/°C

+ 10/G) 10/G)
vs Supply ±(1 + 20/G) * * * µV/V
vs Time ±(1 + 20/G) * * * µV/mo

INPUT BIAS CURRENT

Initial Bias Current

(each input) ±15 ±30 ±10 * ±5 ±20 * * nA
vs Temperature ±0.2 * * * nA/°C
vs Supply ±0.1 * * * nA/V

Initial Offset Current ±15 ±30 ±10 * ±5 ±20 * * nA

vs Temperature ±0.5 * * * nA/°C

INPUT IMPEDANCE

Differential 1010 || 3 * * * Ω || pF
Common-mode 1010 || 3 * * * Ω || pF

INPUT VOLTAGE RANGE

Range, Linear Response ±10 ±12 * * * * * * V
CMR with 1kΩ Source Imbalance

DC to 60Hz, G = 1 80 90 * * * * 65 85 dB
DC to 60Hz, G = 10 96 106 * * * * 90 95 dB
DC to 60Hz, G = 100 to 1000 106 110 * * * * 100 105 dB

INPUT NOISE

Input Voltage Noise

fB = 0.01Hz to 10Hz 0.8 * * * µV, p-p

Density, G = 1000

fO = 10Hz 18 * * * nV/√Hz
fO = 100Hz 15 * * * nV/√Hz
fO = 1kHz 13 * * * nV/√Hz

Input Current Noise

fB = 0.01Hz to 10Hz 50 * * * pA, p-p

Density

fO = 10Hz 0.8 * * * pA/√Hz
fO = 100Hz 0.46 * * * pA/√Hz
fO = 1kHz 0.35 * * * pA/√Hz

DYNAMIC RESPONSE

Small Signal, ±3dB Flatness

G = 1 300 * * * kHz
G = 10 140 * * * kHz
G = 100 25 * * * kHz
G = 1000 2.5 * * * kHz

Small Signal, ±1% Flatness

G = 1 20 * * * kHz
G = 10 10 * * * kHz
G = 100 1 * * * kHz
G = 1000 200 * * * Hz

Full Power, G = 1 to 100 6.4 * * * kHz
Slew Rate, G = 1 to 100 0.2 0.4 * * * * * * V/µs
Settling Time (0.1%)

G = 1 30 40 * * * * * * µs
G = 100 40 55 * * * * * * µs
G = 1000 350 470 * * * * * * µs

Settling Time (0.01%)

G = 1 30 45 * * * * * * µs
G = 100 50 70 * * * * * * µs
G = 1000 500 650 * * * * * * µs

POWER SUPPLY

Rated Voltage ±15 * * * V
Voltage Range ±5 ±20 * * * * * * V
Current, Quiescent

(2)

±6.7 ±8.5 * * * * * * mA

TEMPERATURE RANGE

(5)

Specification –25 +85 –55 +125 * * 0 +70 °C
Operation –55 +125 * * * * –25 +85 °C
Storage –65 +150 * * * * –40 +85 °C

* Specifications same as for INA101AM, AG.
NOTES: (1) Typically the tolerance of RG will be the major source of gain error. (2) Nonlinearity is the maximum peak deviation from the best straight-line as a percentage of peak-to-peak full scale output. (3) Not including the TCR of RG. (4) Adjustable
to zero at any one gain. (5)

θ

JC

output stage = 113°C/W,

θ

JC

quiescent circuitry = 19°C/W,

θ

CA

= 83°C/W.