參數(shù)資料
型號: OP97FP
廠商: Analog Devices Inc
文件頁數(shù): 5/16頁
文件大?。?/td> 0K
描述: IC OPAMP GP LP PREC 8DIP
標(biāo)準(zhǔn)包裝: 50
放大器類型: 通用
電路數(shù): 1
轉(zhuǎn)換速率: 0.2 V/µs
-3db帶寬: 900kHz
電流 - 輸入偏壓: 30pA
電壓 - 輸入偏移: 30µV
電流 - 電源: 380µA
電壓 - 電源,單路/雙路(±): ±2 V ~ 20 V
工作溫度: -40°C ~ 85°C
安裝類型: 通孔
封裝/外殼: 8-DIP(0.300",7.62mm)
供應(yīng)商設(shè)備封裝: 8-PDIP
包裝: 管件
OP97
Rev. G | Page 13 of 16
00
29
9-
03
GUARDING AND SHIELDING
To maintain the extremely high input impedances of the OP97,
care must be taken in circuit board layout and manufacturing.
Board surfaces must be kept scrupulously clean and free of
moisture. Conformal coating is recommended to provide a
humidity barrier. Even a clean PCB can have 100 pA of leakage
currents between adjacent traces; therefore, use guard rings
around the inputs. Guard traces are operated at a voltage close
to that on the inputs, so that leakage currents are minimal. In
noninverting applications, connect the guard ring to the common-
mode voltage at the inverting input (Pin 2). In inverting appli-
cations, both inputs remain at ground, so that the guard trace
should be grounded. Make guard traces on both sides of the
circuit board.
High impedance circuitry is extremely susceptible to RF pickup,
line frequency hum, and radiated noise from switching power
supplies. Enclosing sensitive analog sections within grounded
shields is generally necessary to prevent excessive noise pickup.
Twisted-pair cable aid in rejection of line frequency hum.
5
VOUT
OP97
2
3
6
IO
30pF
AD7548
RFB
DIGITAL
INPUTS
0
029
9-
0
36
Figure 35. DAC Output Amplifier
The OP97 is an excellent choice as an output amplifier for
higher resolution CMOS DACs. Its tightly trimmed offset
voltage and minimal bias current result in virtually no
degradation of linearity, even over wide temperature ranges.
Figure 36 shows a versatile monitor circuit that can typically
sense current at any point between the ±15 V supplies. This
makes it ideal for sensing current in applications such as full
bridge drivers where bidirectional current is associated with
large common-mode voltage changes. The 114 dB CMRR of the
OP97 makes the contribution of the amplifier to common-
mode error negligible, leaving only the error due to the resistor
ratio inequality. Ideally, R2/R4 = R3/R5.
VOUT
RL
IL
2
3
6
7
4
R3
10k
R2
10k
R4
10k
R5
10k
R1
10k
V1
OP97
+15V
–15V
00
29
9-
0
37
UNITY-GAIN FOLLOWE
Figure 36. Current Monitor
R
NONINVERTING AMPLIFIER
INVERTING AMPLIFIER
OP97
2
3
6
OP97
2
3
6
OP97
2
3
6
PDIP
BOTTOM VIEW
81
Figure 37. Guard Ring Layout and Connections
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OP97FPZ 功能描述:IC OPAMP GP LP PREC 8DIP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 產(chǎn)品培訓(xùn)模塊:Differential Circuit Design Techniques for Communication Applications 標(biāo)準(zhǔn)包裝:1 系列:- 放大器類型:RF/IF 差分 電路數(shù):1 輸出類型:差分 轉(zhuǎn)換速率:9800 V/µs 增益帶寬積:- -3db帶寬:2.9GHz 電流 - 輸入偏壓:3µA 電壓 - 輸入偏移:- 電流 - 電源:40mA 電流 - 輸出 / 通道:- 電壓 - 電源,單路/雙路(±):3 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-VQFN 裸露焊盤,CSP 供應(yīng)商設(shè)備封裝:16-LFCSP-VQ 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:551 (CN2011-ZH PDF) 其它名稱:ADL5561ACPZ-R7CT
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OP97FS-REEL 功能描述:IC OPAMP GP LP PREC 8SOIC RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 放大器類型:電壓反饋 電路數(shù):4 輸出類型:滿擺幅 轉(zhuǎn)換速率:33 V/µs 增益帶寬積:20MHz -3db帶寬:30MHz 電流 - 輸入偏壓:2nA 電壓 - 輸入偏移:3000µV 電流 - 電源:2.5mA 電流 - 輸出 / 通道:30mA 電壓 - 電源,單路/雙路(±):4.5 V ~ 16.5 V,±2.25 V ~ 8.25 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-SOIC(0.154",3.90mm 寬) 供應(yīng)商設(shè)備封裝:14-SOIC 包裝:帶卷 (TR)
OP97FS-REEL7 功能描述:IC OPAMP GP LP PREC 8SOIC RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 放大器類型:電壓反饋 電路數(shù):4 輸出類型:滿擺幅 轉(zhuǎn)換速率:33 V/µs 增益帶寬積:20MHz -3db帶寬:30MHz 電流 - 輸入偏壓:2nA 電壓 - 輸入偏移:3000µV 電流 - 電源:2.5mA 電流 - 輸出 / 通道:30mA 電壓 - 電源,單路/雙路(±):4.5 V ~ 16.5 V,±2.25 V ~ 8.25 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-SOIC(0.154",3.90mm 寬) 供應(yīng)商設(shè)備封裝:14-SOIC 包裝:帶卷 (TR)
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