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參數(shù)資料
| 型號： | AD8250ARMZ-RL |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 13/24頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP INST ICMOS LDRIFT 10MSOP |
| 標準包裝： | 3,000 |
| 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） |
| 供應商設備封裝： | 10-MSOP |
| 包裝： | 帶卷 (TR) |
| 配用： | AD8250-EVALZ-ND - BOARD EVALUATION AD8250 |
AD8250
Data Sheet
Rev. C | Page 20 of 24
APPLICATIONS
DIFFERENTIAL OUTPUT
In certain applications, it is necessary to create a differential
signal. High resolution ADCs often require a differential input.
In other cases, transmission over a long distance can require
differential signals for better immunity to interference.
Figure 57 shows how to configure the AD8250 to output a
differential signal. An op amp, the AD817, is used in an inverting
topology to create a differential voltage. VREF sets the output
midpoint according to the equation shown in the figure. Errors
from the op amp are common to both outputs and are thus
common mode. Likewise, errors from using mismatched resistors
cause a common-mode dc offset error. Such errors are rejected
in differential signal processing by differential input ADCs or
instrumentation amplifiers.
When using this circuit to drive a differential ADC, VREF can be
set using a resistor divider from the ADC reference to make the
output ratiometric with the ADC.
SETTING GAINS WITH A MICROCONTROLLER
+15V
MICRO-
CONTROLLER
–15V
A0
A1
WR
+IN
–IN
10μF0.1F
REF
AD8250
06
28
8-
0
63
+
–
DGND
Figure 56. Programming Gain Using a Microcontroller
+12V
–12V
A0
A1
WR
+IN
10μF
0.1μF
10μF
0.1μF
AD8250
REF
G = 1
0.1F
4.99k
AD817
0.1F
+12V
–12V
VREF
0V
VOUTA = VIN + VREF
2
VOUTB = –VIN + VREF
+2.5V
–2.5V
0V
+2.5V
–2.5V
0V
TIME
AMPLITUDE
0V
TIME
AMPLITUDE
+5V
–5V
AMPLITUDE
10pF
+12V
–12V
VIN
06
28
8-
0
64
+
–
+
–
DGND
Figure 57. Differential Output with Level Shift
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD8250ARZ | 制造商:AD 制造商全稱:Analog Devices 功能描述:12MHz 20V/us G=1,2,5,10 Programmable Gain iCMOS Instrumentation Amplifier |
| AD8250ARZ-R7 | 制造商:AD 制造商全稱:Analog Devices 功能描述:12MHz 20V/us G=1,2,5,10 Programmable Gain iCMOS Instrumentation Amplifier |
| AD8250ARZ-RL | 制造商:AD 制造商全稱:Analog Devices 功能描述:12MHz 20V/us G=1,2,5,10 Programmable Gain iCMOS Instrumentation Amplifier |
| AD8250-EVAL | 制造商:AD 制造商全稱:Analog Devices 功能描述:12MHz 20V/us G=1,2,5,10 Programmable Gain iCMOS Instrumentation Amplifier |
| AD8250-EVALZ | 功能描述:BOARD EVALUATION AD8250 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 運算放大器 系列:iCMOS® 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- |
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