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PDF INA106KU Data sheet ( Hoja de datos )
| Número de pieza | INA106KU | |
| Descripción | Precision Gain = 10 DIFFERENTIAL AMPLIFIER | |
| Fabricantes | Burr-Brown Corporation | |
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®
INA106
INA106
INA106
Precision Gain = 10
DIFFERENTIAL AMPLIFIER
FEATURES
q ACCURATE GAIN: ±0.025% max
q HIGH COMMON-MODE REJECTION:
86dB min
q NONLINEARITY: 0.001% max
q EASY TO USE
q PLASTIC 8-PIN DIP, SO-8 SOIC
PACKAGES
APPLICATIONS
q G = 10 DIFFERENTIAL AMPLIFIER
q G = +10 AMPLIFIER
q G = –10 AMPLIFIER
q G = +11 AMPLIFIER
q INSTRUMENTATION AMPLIFIER
DESCRIPTION
The INA106 is a monolithic Gain = 10 differential
amplifier consisting of a precision op amp and on-chip
metal film resistors. The resistors are laser trimmed
for accurate gain and high common-mode rejection.
Excellent TCR tracking of the resistors maintains
gain accuracy and common-mode rejection over
temperature.
The differential amplifier is the foundation of many
commonly used circuits. The INA106 provides this
precision circuit function without using an expensive
resistor network. The INA106 is available in 8-pin
plastic DIP and SO-8 surface-mount packages.
–In 2
R1
10kΩ
3
+In
R3
10kΩ
R2
100kΩ
R4
100kΩ
5 Sense
7 V+
6 Output
4 V–
1 Reference
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
©1987 Burr-Brown Corporation
PDS-729F
Printed in U.S.A. August, 1998
1 page  
TYPICAL PERFORMANCE CURVES (CONT)
At TA = +25°C, VS = ±15V, unless otherwise noted.
110
100
90
80
70
60
10
CMR vs FREQUENCY
100 1k
Frequency (Hz)
10k
100k
140
120
100
80
60
40
1
POWER SUPPLY REJECTION
vs FREQUENCY
V–
V+
10 100 1k 10k 100k
Frequency (Hz)
APPLICATIONS INFORMATION
Figure 1 shows the basic connections required for operation
of the INA106. Power supply bypass capacitors should be
connected close to the device pins as shown.
V–
1µF
V+
1µF
V2 2
4
R1
10kΩ
7
INA106
R2
100kΩ
5
R3
10kΩ
V3 3
R4
100kΩ
1
6
+
– VOUT = 10(V3 –V2)
FIGURE 1. Basic Power Supply and Signal Connections.
The differential input signal is connected to pins 2 and 3 as
shown. The source impedance connected to the inputs must
be equal to assure good common-mode rejection. A 5Ω
mismatch in source impedance will degrade the common-
mode rejection of a typical device to approximately 86dB. If
the source has a known source impedance mismatch, an
additional resistor in series with one input can be used to
preserve good common-mode rejection.
The output is referred to the output reference terminal
(pin 1) which is normally grounded. A voltage applied to the
Ref terminal will be summed with the output signal. The
source impedance of a signal applied to the Ref terminal
should be less than 10Ω to maintain good common-mode
rejection.
Figure 2 shows a voltage applied to pin 1 to trim the offset
voltage of the INA106. The known 100Ω source impedance
of the trim circuit is compensated by the 10Ω resistor in
series with pin 3 to maintain good CMR.
INA106
R1
V2 2
R2
5
10Ω
V3 3
Compensates for
some impedance
at pin 1. See text.
R3
VO = V2 – V3
Offset Adjustment Range = ±3mV
6 VO
R4
1 499kΩ
100Ω
+15V
100kΩ
–15V
FIGURE 2. Offset Adjustment.
Referring to Figure 1, the CMR depends upon the match of
the internal R4/R3 ratio to the R1/R2 ratio. A CMR of 106dB
requires resistor matching of 0.005%. To maintain high
CMR over temperature, the resistor TCR tracking must be
better than 2ppm/°C. These accuracies are difficult and
expensive to reliably achieve with discrete components.
®
5 INA106
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet INA106KU.PDF ] | |
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