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參數資料
| 型號： | AD8230YRZ-REEL7 |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 1/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP CHOPPER R-R PREC 8SOIC |
| 標準包裝： | 1,000 |
| 放大器類型： | 斷路器（零漂移） |
| 電路數： | 1 |
| 輸出類型： | 滿擺幅 |
| 轉換速率： | 2 V/µs |
| 電流 - 輸入偏壓： | 150pA |
| 電壓 - 輸入偏移： | 20µV |
| 電流 - 電源： | 3.2mA |
| 電流 - 輸出 / 通道： | 15mA |
| 電壓 - 電源，單路/雙路(±)： | 8 V ~ 16 V，±4 V ~ 8 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應商設備封裝： | 8-SO |
| 包裝： | 帶卷 (TR) |
16 V Rail-to-Rail, Zero-Drift,
Precision Instrumentation Amplifier
AD8230
Rev. B
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.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
www.analog.com
Fax: 781.461.3113
2004–2007 Analog Devices, Inc. All rights reserved.
FEATURES
Resistor programmable gain range: 101 to 1000
Supply voltage range: ±4 V to ±8 V
Rail-to-rail input and output
Maintains performance over 40°C to +125°C
Excellent ac and dc performance
110 dB minimum CMR @ 60 Hz, G = 10 to 1000
10 μV maximum offset voltage (RTI, ±5 V operation)
50 nV/°C maximum offset drift
20 ppm maximum gain nonlinearity
APPLICATIONS
Pressure measurements
Temperature measurements
Strain measurements
Automotive diagnostics
GENERAL DESCRIPTION
The AD8230 is a low drift, differential sampling, precision
instrumentation amplifier. Auto-zeroing reduces offset voltage
drift to less than 50 nV/°C. The AD8230 is well-suited for
thermocouple and bridge transducer applications. The
AD8230’s high CMR of 110 dB (minimum) rejects line noise in
measurements where the sensor is far from the instrumentation.
The 16 V rail-to-rail, common-mode input range is useful for
noisy environments where ground potentials vary by several
volts. Low frequency noise is kept to a minimal 3 μV p-p,
making the AD8230 perfect for applications requiring the
utmost dc precision. Moreover, the AD8230 maintains its high
performance over the extended industrial temperature range of
40°C to +125°C.
Two external resistors are used to program the gain. By using
matched external resistors, the gain stability of the AD8230 is
much higher than instrumentation amplifiers that use a single
resistor to set the gain. In addition to allowing users to program
the gain between 101 and 1000, users can adjust the output
offset voltage.
CONNECTION DIAGRAM
8
7
6
5
1
2
3
4
–VS
VOUT
RG
VREF2
–IN
TOP VIEW
(Not to Scale)
+VS
VREF1
+IN
AD8230
0
506
3-
0
41
Figure 1. 8-Lead SOIC (R-8)
TEMPERATURE (°C)
150
–50
–30
–10
10
30
50
70
90
110
130
O
F
SET
VO
L
T
A
G
E
(
V
R
T
I)
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
05
06
3-
00
1
Figure 2. Relative Offset Voltage vs. Temperature
2
6
1
7
5
8
4
3
AD8230
VOUT
–5V
+5V
TYPE K THERMOCOUPLE
0.1F
284
34.8k
0.1F
05
06
3-
00
2
Figure 3. Thermocouple Measurement
The AD8230 is versatile yet simple to use. Its auto-zeroing
topology significantly minimizes the input and output
transients typical of commutating or chopper instrumentation
amplifiers. The AD8230 operates on ±4 V to ±8 V (+8 V to +16 V)
supplies and is available in an 8-lead SOIC.
1 The AD8230 can be programmed for a gain as low as 2, but the maximum
input voltage is limited to approximately 750 mV.
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