參數(shù)資料
型號(hào): AD8250ARMZ
廠商: Analog Devices Inc
文件頁數(shù): 14/24頁
文件大?。?/td> 0K
描述: IC AMP INST ICMOS LDRIFT 10MSOP
標(biāo)準(zhǔn)包裝: 50
系列: iCMOS®
放大器類型: 儀表
電路數(shù): 1
輸出類型: 推挽式
轉(zhuǎn)換速率: 25 V/µs
-3db帶寬: 10MHz
電流 - 輸入偏壓: 5nA
電壓 - 輸入偏移: 70µV
電流 - 電源: 4.1mA
電流 - 輸出 / 通道: 37mA
電壓 - 電源,單路/雙路(±): 10 V ~ 30 V,±5 V ~ 15 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 10-TFSOP,10-MSOP(0.118",3.00mm 寬)
供應(yīng)商設(shè)備封裝: 10-MSOP
包裝: 管件
產(chǎn)品目錄頁面: 771 (CN2011-ZH PDF)
配用: AD8250-EVALZ-ND - BOARD EVALUATION AD8250
Data Sheet
AD8250
Rev. C | Page 21 of 24
DATA ACQUISITION
The AD8250 makes an excellent instrumentation amplifier for
use in data acquisition systems. Its wide bandwidth, low distortion,
low settling time, and low noise enable it to condition signals in
front of a variety of 16-bit ADCs.
Figure 59 shows a schematic of the AD825x data acquisition
demonstration board. The quick slew rate of the AD8250 allows
it to condition rapidly changing signals from the multiplexed
inputs. An FPGA controls the AD7612, AD8250, and ADG1209.
In addition, mechanical switches and jumpers allow users to pin
strap the gains when in transparent gain mode.
This system achieved 111 dB of THD at 1 kHz and a signal-to-
noise ratio of 91 dB during testing, as shown in Figure 58.
0
–140
–130
–120
–110
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
5
10
15
20
25
30
35
40
45
50
AM
P
L
IT
UDE
(
d
B)
FREQUENCY (kHz)
06288-
066
Figure 58. FFT of the AD825x DAQ Demo Board Using the AD8250,
1 kHz Signal
06288-
065
AD8250
2
+IN
–IN
A1
A0
OUT
REF
–VS
+VS
DGND
5
3
4
9
1
7
10
11
12
13
14
15
16
6
2
S1A EN
S2A
S3A
S4A
S1B
S2B
DB
GND
DA
S3B
S4B
A0
A1
VSS
VDD
JMP
+12V –12V
+12V
–12V
JMP
–VS
+5V
DGND
806Ω
0Ω 49.9Ω
–CH1
+CH1
+CH2
–CH2
+CH3
–CH3
+CH4
–CH4
1nF
2kΩ
0.1F
GND
+12V
–12V
+
10F
0.1F
CD
CC
C3
0.1F
C4
0.1F
+5V
DGND
R8
2kΩ
+IN
AD7612
ADR435
ADG1209
DGND
ALTERA
EPF6010ATC144-3
8
1
10
6
WR
9
4
5
8
3
7
+
DGND
2k
DGND
Figure 59. Schematic of ADG1209, AD8250, and AD7612 in the AD825x DAQ Demo Board
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