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PDF AD8223 Data sheet ( Hoja de datos )
| Número de pieza | AD8223 | |
| Descripción | Low Cost Instrumentation Amplifier | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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www.DataSheet4U.com
Preliminary Technical Data
FEATURES
Gain set with 1 resistor per amplifier
Gain = 5 to 1000
Inputs
Voltage range to 150 mV below negative rail
25 nA maximum input bias current
30 nV/√Hz, RTI noise @ 1 kHz
Power supplies
Dual supply: ±2.5V to ±12.5
Single supply: 3V to 25V
600 μA maximum supply current
APPLICATIONS
Low power medical instrumentation
Transducer interface
Thermocouple amplifiers
Industrial process controls
Difference amplifiers
Low power data acquisition
Single Supply, Rail-to-Rail, Low Cost
Instrumentation Amplifier
AD8223
CONNECTION DIAGRAM
–RG 1
–IN 2
–
+IN 3
+
–VS 4 AD8223
8 +RG
7 +VS
6 OUTPUT
5 REF
Figure 1. 8-Lead SOIC (R) and 8-Lead MSOP SOIC (RM) Packages
GENERAL DESCRIPTION
The AD8223 is an integrated single-supply instrumentation
amplifier that delivers rail-to-rail output swing on a single
supply (+3.0 V to +25 V supplies). The AD8223 offers superior
user flexibility by allowing single-gain set resistor program-
ming, and conforming to the 8-lead industry standard pinout
configuration.
With no external resistor, the AD8223 is configured for G = 5
and with an external resistor, the AD8223 can be programmed
for gains up to 1000.
The AD8223 holds errors to a minimum by providing superior
ac CMRR that increases with increasing gain. Line noise, as
well as line harmonics, is rejected because the CMRR remains
constant up to 200 Hz. The AD8223 has a wide input common-
mode range and can amplify signals that have a common-mode
voltage 150 mV below ground. Although the design of the AD8223
is optimized to operate from a single supply, the AD8223 still
provides superior performance when operated from a dual
voltage supply (±2.5 V to ±12.5 V).
Low power consumption (1.5 mW at 3 V), wide supply voltage
range, and rail-to-rail output swing make the AD8223 ideal for
battery-powered applications. The rail-to-rail output stage
maximizes the dynamic range when operating from low supply
voltages. The AD8223 replaces discrete instrumentation
amplifier designs and offers superior linearity, temperature
stability and reliability in a minimum of space.
Rev. PrA
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
www.analog.com
©2008 Analog Devices, Inc. All rights reserved.
1 page  
Preliminarywww.DataSheet4U.com Technical Data
AD8223
DUAL SUPPLY
TA = 25°C, dual supply, VS = ±12 V, and RL = 10 kΩ, unless otherwise noted.
Table 2.
AD8223A
AD8223B
Parameter
Conditions
Min Typ Max
Min
Typ
Max Unit
COMMON MODE REJECTION RATIO
DC to 60 Hz with 1 kΩ Source
Imbalance
VCM = −10 V to 10 V
G=5
74 86
dB
G = 10
80 92
dB
G = 100
88 100
dB
G = 1000
88 100
dB
NOISE
Voltage Noise, 1 kHz
G=5
50 50 nV/√Hz
G = 1000
30 30 nV/√Hz
RTI, 0.1 Hz to 10 Hz
G=5
3.0 3.0 μV p-p
G = 1000
1.5 1.5 μV p-p
Current Noise, 1 kHz
100 100 fA/√Hz
0.1 Hz to 10 Hz
1.5 1.5 pA p-p
VOLTAGE OFFSET
Total RTI Error =
VOSI + VOSO/G
Input Offset, VOSI
400 200 μV
Average TC
5 3 μV/°C
Output Offset, VOSO
1000
500 μV
Average TC
15 10 μV/°C
Offset Referred to Input vs. Supply
(PSR)
G=5
80 90
dB
G = 10
86 96
dB
G = 100
90 100
dB
G = 1000
90 100
dB
INPUT CURRENT
Input Bias Current
17 25
17 25 nA
Over Temperature
27.5 27.5 nA
Average Temperature
Coefficient
25 25 pA/°C
Input Offset Current
0.25 2
0.25 2
nA
Over Temperature
2.5 2.5 nA
Average Temperature
Coefficient
5 5 pA/°C
DYNAMIC RESPONSE
Small Signal −3 dB Bandwidth
G=5
200 200 kHz
G = 10
190 190 kHz
G = 100
75 75 kHz
G = 1000
8 8 kHz
Slew Rate
0.3 0.3 V/μs
Settling Time to 0.01%
Step size = 10 V
G=5
30 30 μs
G = 100
30 30 μs
G = 1000
140 140 μs
Rev. PrA | Page 5 of 20
5 Page 
Preliminarywww.DataSheet4U.com Technical Data
140
120
G = 1000
100
G = 100
80
60 G = 10
G=5
40
20
0
1 10 100 1k 10k
FREQUENCY (Hz)
Figure 20. Positive PSRR vs. Frequency, VS = 5 V
100k
120
G = 1000
100
80
G = 100
60
G = 10
40 G = 5
20
0
1 10 100 1k 10k
FREQUENCY (Hz)
Figure 21. Negative PSRR vs. Frequency, VS = ±12 V
100k
Figure 22. Settling Time to 0.005% vs. Gain, for a 20 V Step at Output,
CL = 100 pF, VS = ±12 V
AD8223
5V/DIV
0.1%/DIV
100µs/DIV
Figure 23. Large Signal Response, G = 5
5V/DIV
0.1%/DIV
100µs/DIV
Figure 24. Large Signal Pulse Response, G = 100, CL = 100 pF
5V/DIV
0.1%/DIV
100µs/DIV
Figure 25. Large Signal Pulse Response, G = 1000, CL = 100 pF
Rev. PrA | Page 11 of 20
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet AD8223.PDF ] | |
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