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PDF INA101KU Data sheet ( Hoja de datos )
| Número de pieza | INA101KU | |
| Descripción | High Accuracy INSTRUMENTATION AMPLIFIER | |
| Fabricantes | Burr-Brown Corporation | |
| Logotipo |  |
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® INA101
High Accuracy
INSTRUMENTATION AMPLIFIER
FEATURES
q LOW DRIFT: 0.25µV/°C max
q LOW OFFSET VOLTAGE: 25µV max
q LOW NONLINEARITY: 0.002%
q LOW NOISE: 13nV/√Hz
q HIGH CMR: 106dB AT 60Hz
q HIGH INPUT IMPEDANCE: 1010Ω
q 14-PIN PLASTIC, CERAMIC DIP,
SOL-16, AND TO-100 PACKAGES
APPLICATIONS
q STRAIN GAGES
q THERMOCOUPLES
q RTDs
q REMOTE TRANSDUCERS
q LOW-LEVEL SIGNALS
q MEDICAL INSTRUMENTATION
DESCRIPTION
The INA101 is a high accuracy instrumentation ampli-
fier designed for low-level signal amplification and
general purpose data acquisition. Three precision op
amps and laser-trimmed metal film resistors are inte-
grated on a single monolithic integrated circuit.
The INA101 is packaged in TO-100 metal, 14-pin
plastic and ceramic DIP, and SOL-16 surface-mount
packages. Commercial, industrial and military tem-
perature range models are available.
–Input
10
1
1kΩ
RG
4
5
+Input
1kΩ
Offset
Adj.
23
A1
20kΩ
20kΩ
A2
96
+VCC –VCC
TO-100 PACKAGE
10kΩ
10kΩ
INA101
10kΩ
A3
10kΩ
Output
8
Common
7
–Input
Gain Sense 1
Gain Set 1
RG
Gain Set 2
Gain Sense 2
+Input
3
1kΩ
4
5
10
11
1kΩ
12
Offset
Adj. A1 Output
67
8
DIP PACKAGE
INA101
A1
20kΩ
10kΩ
20kΩ
A2
10kΩ
10kΩ
A3
Output
1
10kΩ
Common
14
2 13
+VCC –VCC
9
A2 Output
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111
Internet: http://www.burr-brown.com/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
©1981 Burr-Brown Corporation
PDS-454K
Printed in U.S.A. July, 1998
1 page  
TYPICAL PERFORMANCE CURVES (CONT)
At +25°C, VCC = ±15V unless otherwise noted.
1000
100
SETTLING TIME vs GAIN
RL = 2kΩ
CL = 1000pF
0.01%
0.1%
1%
10
1
10 100
Gain (V/V)
1000
30
20
10
0
0
OUTPUT NOISE vs GAIN
RS = 1MΩ
RS = 1000kΩ
RS = 10kΩ
RS = 0
10 100
Gain (V/V)
1000
1000
INPUT NOISE VOLTAGE
vs FREQUENCY (100 ≤ GAIN ≤ 1000)
100
10
1
0 10 100 1000
Frequency (Hz)
APPLICATION INFORMATION
Figure 1 shows the basic connections required for operation
of the INA101. (Pin numbers shown are for the TO-100
metal package.) Applications with noisy or high impedance
power supplies may require decoupling capacitors close to
the device pins as shown.
The output is referred to the output Common terminal which
is normally grounded. This must be a low-impedance con-
nection to assure good common-mode rejection. A resis-
tance greater than 0.1Ω in series with the Common pin will
cause common-mode rejection to fall below 106dB.
SETTING THE GAIN
Gain of the INA101 is set by connecting a single external
resistor, RG:
G
=
1
+
40kΩ
RG
(1)
The 40kΩ term in equation (1) comes from the sum of the
two internal feedback resistors. These are on-chip metal film
resistors which are laser trimmed to accurate absolute val-
ues. The accuracy and temperature coefficient of these
resistors are included in the gain accuracy and drift specifi-
cations of the INA101.
The stability and temperature drift of the external gain
setting resistor, RG, also affects gain. RG’s contribution to
gain accuracy and drift can be directly inferred from the gain
equation (1). Low resistor values required for high gain can
make wiring resistance important. Sockets add to the wiring
resistance which will contribute additional gain error (possi-
bly an unstable gain error) in gains of approximately 100 or
greater. The gain sense connections on the DIP and SOL-16
packages (see Figure 2) reduce the gain error produced by
wiring or socket resistance.
®
5 INA101
5 Page | ||
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| PDF Descargar | [ Datasheet INA101KU.PDF ] | |
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