參數(shù)資料
型號(hào)： AD628ARZ-RL
廠商： ANALOG DEVICES INC
元件分類(lèi)： 運(yùn)動(dòng)控制電子
英文描述： High Common-Mode Voltage, Programmable Gain Difference Amplifier
中文描述： OP-AMP, 1500 uV OFFSET-MAX, PDSO8
封裝： ROHS COMPLIANT, MS-012AA, SOIC-8
文件頁(yè)數(shù)： 14/20頁(yè)
文件大小： 298K
代理商： AD628ARZ-RL
AD628
THEORY OF OPERATION
The AD628 is a high common-mode voltage difference
amplifier, combined with a user-configurable output amplifier
(see Figure 28 and Figure 29). Differential mode voltages in
excess of 120 V are accurately scaled by a precision 11:1 voltage
divider at the input. A reference voltage input is available to the
user at Pin 3 (V
REF
). The output common-mode voltage of the
difference amplifier is the same as the voltage applied to the
reference pin. If the uncommitted amplifier is configured for
gain, connect Pin 3 to one end of the external gain resistor to
establish the output common-mode voltage at Pin 5 (OUT).
Rev. F | Page 14 of 20
The output of the difference amplifier is internally connected
to a 10 kΩ resistor trimmed to better than ±0.1% absolute
accuracy. The resistor is connected to the noninverting input of
the output amplifier and is accessible at Pin 4 (C
FILT
). A
capacitor can be connected to implement a low-pass filter, a
resistor can be connected to further reduce the output voltage,
or a clamp circuit can be connected to limit the output swing.
The uncommitted amplifier is a high open-loop gain, low offset,
low drift op amp, with its noninverting input connected to the
internal 10 kΩ resistor. Both inputs are accessible to the user.
Careful layout design has resulted in exceptional common-
mode rejection at higher frequencies. The inputs are connected
to Pin 1 (+IN) and Pin 8 (IN), which are adjacent to the power
pins, Pin 2 (V
S
) and Pin 7 (+V
S
). Because the power pins are at
ac ground, input impedance balance and, therefore, common-
mode rejection are preserved at higher frequencies.
+IN
–IN
+IN
–IN
A2
A1
+IN
–IN
100k
Ω
100k
Ω
10k
Ω
10k
Ω
V
REF
10k
Ω
OUT
G = +0.1
C
FILT
R
G
0
Figure 28. Simplified Schematic
+V
S
+IN
–IN
–V
S
A2
+IN
–IN
100k
Ω
100k
Ω
10k
Ω
10k
Ω
V
REF
REFERENCE
VOLTAGE
10k
Ω
AD628
OUT
G = +0.1
R
G
R
EXT3
C
FILT
R
EXT2
R
EXT1
+IN
–IN
A1
0
Figure 29. Circuit Connections
相關(guān)PDF資料
PDF描述
AD629ANZ High Common-Mode Voltage, Difference Amplifier
AD629ARZ High Common-Mode Voltage, Difference Amplifier
AD629ARZ-R7 High Common-Mode Voltage, Difference Amplifier
AD629ARZ-RL High Common-Mode Voltage, Difference Amplifier
AD629BNZ High Common-Mode Voltage, Difference Amplifier
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD628-EVAL 制造商:Analog Devices 功能描述:Evaluation Board For High Voltage Current Shunt Sensing
AD629 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:Dual-Channel Audio Difference Amplifier
AD629_07 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:High Common-Mode Voltage, Difference Amplifier
AD629A 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:High Common-Mode Voltage Difference Amplifier
AD629AN 功能描述:IC AMP DIFF 25MA LDRIFT 8DIP RoHS:否 類(lèi)別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 放大器類(lèi)型:通用 電路數(shù):1 輸出類(lèi)型:滿擺幅 轉(zhuǎn)換速率:0.11 V/µs 增益帶寬積:350kHz -3db帶寬:- 電流 - 輸入偏壓:4nA 電壓 - 輸入偏移:20µV 電流 - 電源:260µA 電流 - 輸出 / 通道:20mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 36 V，±1.35 V ~ 18 V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:8-SO 包裝:帶卷 (TR)
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