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Número de pieza | INA110SG | |
Descripción | Fast-Settling FET-Input INSTRUMENTATION AMPLIFIER | |
Fabricantes | Burr-Brown Corporation | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de INA110SG (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
No Preview Available ! ® INA110
Fast-Settling FET-Input
INSTRUMENTATION AMPLIFIER
FEATURES
q LOW BIAS CURRENT: 50pA max
q FAST SETTLING: 4µs to 0.01%
q HIGH CMR: 106dB min; 90dB at 10kHz
q INTERNAL GAINS: 1, 10, 100, 200, 500
q VERY LOW GAIN DRIFT: 10 to 50ppm/°C
q LOW OFFSET DRIFT: 2µV/°C
q LOW COST
q PINOUT SIMILAR TO AD524 AND AD624
APPLICATIONS
q MULTIPLEXED INPUT DATA
ACQUISITION SYSTEM
q FAST DIFFERENTIAL PULSE AMPLIFIER
q HIGH SPEED GAIN BLOCK
q AMPLIFICATION OF HIGH IMPEDANCE
SOURCES
DESCRIPTION
FET
The INA110 is a versatile monolithic FET-input
instrumentation amplifier. Its current-feedback circuit
–In
X 10
1 Input
13 4.44kΩ
topology and laser trimmed input stage provide
12 404Ω
X 100
excellent dynamic performance and accuracy. The (1)
16 201Ω
INA110 settles in 4µs to 0.01%, making it ideal for X 200
high speed or multiplexed-input data acquisition
11 80.2Ω
X 500
systems.
INA110
10kΩ
A1
20kΩ
20kΩ
10kΩ
10
Sense
9
A3 Output
Internal gain-set resistors are provided for gains of 1,
10, 100, 200, and 500V/V. Inputs are protected for
differential and common-mode voltages up to ±VCC.
Its very high input impedance and low input bias
current make the INA110 ideal for applications
requiring input filters or input protection circuitry.
3
RG
2
+In
FET
Input
4
A2
5
10kΩ
87
10kΩ
6
Ref
14 15
The INA110 is available in 16-pin plastic and ceramic
DIPs, and in the SOL-16 surface-mount package.
Military, industrial and commercial temperature range
grades are available.
Input
Offset
Adjust
+VCC
–VCC
Output
Offset
Adjust
NOTE: (1) Connect to RG for desired gain.
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 • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
©1986 Burr-Brown Corporation
PDS-645E
Printed in U.S.A. September, 1993
1 page TYPICAL PERFORMANCE CURVES (CONT)
TA = +25°C, ±VCC = 15VDC, unless otherwise noted.
100nA
BIAS CURRENT vs TEMPERATURE
10nA
1pA
100pA
10pA
1pA
–55
–25
5 35 65
Temperature (°C)
95
125
GAIN vs FREQUENCY
1k
G = 500
G = 200
100 G = 100
G = 10
10
1 G=1
10 100 1k 10k 100k 1M 10M
Frequency (Hz)
120
100
80
60
40
20
0
1
CMR vs FREQUENCY
G = 500
G = 200
G = 100
G = 10
G=1
10 100 1k 10k 100k 1M
Frequency (Hz)
LARGE SIGNAL TRANSIENT RESPONSE
(G = 100)
10
0
–10
0 10 20
Time (µs)
120
100
80
60
40
20
0
1
POWER SUPPLY REJECTION vs FREQUENCY
G = 500
G = 200
G = 100
G = 10
G=1
10 100 1k 10k 100k 1M
Frequency (Hz)
SMALL SIGNAL TRANSIENT RESPONSE
(G = 100)
100
0
–100
0 10 20
Time (µs)
®
5 INA110
5 Page V1
∆VIN
V2
+15V
R1 D1
1
–15V
+15V
R2
D2 X200 16
3
D3 2
D4
–15V
+15V
8
INA110
7
10
9
6
–15V
VOUT
For lower voltage, lower resistor noise:
R1 = R2 = 20kΩ, D1 – D4 = FDH300 (1nA leakage)
For higher voltage, higher resistor noise:
R1 = R2 = 100kΩ, D1 – D4 = 2N4117A (1pA leakage)
Matching of RCs on inputs will affect CMR, but
can be optimized by trimming R1 or R2.
FIGURE 14. Input-Protected Instrumentation Amplifier.
V1
∆VIN
V2
10kΩ
990kΩ
990kΩ
1
12
X100
3
2
+15V
Overall G = 1
8
INA110
7
10
9
6
VOUT
10kΩ
–15V
Common-mode range = ±1000V.
CMR is dependent on ratio matching
of external input resistors.
FIGURE 15. High Common-Mode Voltage Differential
Amplifier.
1
∆VIN
X10 13
RG 3
2
+15V
8
INA110
7
10
9
6
–15V
–15V +15V
13
16
6
7 PGA102
8
1
4
3
15
2
VOUT
CODE
00
01
10
GAIN
10
100
1000
TYPICAL 0.01% SETTLING TIME
6µs
6µs
12µs
X10 X100
PGA Gain
Select
FIGURE 16. Digitally-Controlled Fast-Settling Programmable Gain Instrumentation Amplifier.
X10
X100
∆VIN X200
X500
RG
1
13
12
16
11
3
2
+15V
8
INA110
7
10
9
6
+15V
2N2222A
1kΩ
R
–15V
R
IOUT
IOUT = (∆VIN) (G) (1/10k + 1/R)
For 0mA to 20mA output, R = 50.25Ω with (∆VIN) (G) = 1V
RL
∆VIN
X10
X100
X200
X500
RG
1
13
12
16
11
3
2
+15V
8
INA110
7
10
9
6
X10
X100
X200
X500
RG
1
13
12
16
11
3
2
–15V
+
∆VOUT
–
8
INA110
7
10
9
6
FIGURE 17. Differential Input FET Buffered Current
Source.
FIGURE 18. Differential Input/Differential Output
Amplifier.
®
11 INA110
11 Page |
Páginas | Total 11 Páginas | |
PDF Descargar | [ Datasheet INA110SG.PDF ] |
Número de pieza | Descripción | Fabricantes |
INA110SG | Fast-Settling FET-Input INSTRUMENTATION AMPLIFIER | Burr-Brown Corporation |
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