参数资料
| 型号： | OP97FSZ-REEL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 5/16页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP GP LP PREC 8SOIC |
| 标准包装： | 2,500 |
| 放大器类型： | 通用 |
| 电路数： | 1 |
| 转换速率： | 0.2 V/µs |
| -3db带宽： | 900kHz |
| 电流 - 输入偏压： | 30pA |
| 电压 - 输入偏移： | 30µV |
| 电流 - 电源： | 380µA |
| 电压 - 电源，单路/双路(±)： | ±2 V ~ 20 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SO |
| 包装： | 带卷 (TR) |
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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相关代理商/技术参数 |
参数描述 |
|---|---|
| OP97FSZ-REEL7 | 功能描述:IC OPAMP GP LP PREC 8SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:2,500 系列:- 放大器类型:通用 电路数:1 输出类型:满摆幅 转换速率:0.11 V/µs 增益带宽积:350kHz -3db带宽:- 电流 - 输入偏压:4nA 电压 - 输入偏移:20µV 电流 - 电源:260µA 电流 - 输出 / 通道:20mA 电压 - 电源，单路/双路(±):2.7 V ~ 36 V，±1.35 V ~ 18 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商设备封装:8-SO 包装:带卷 (TR) |
| OP97FZ | 制造商:Rochester Electronics LLC 功能描述:LOW-POWER, LOW BIAS CURRE - Bulk |
| OP980 | 功能描述:光电二极管 Photodiode RoHS:否 制造商:Vishay Semiconductors 产品:Photodiodes 反向电压:10 V 最大暗电流:30 nA 峰值波长:565 nm 上升时间:3.1 us 下降时间:3 us 半强度角度:50 deg 封装 / 箱体:TO-5 |
| OP993 | 功能描述:光电二极管 Photodiode RoHS:否 制造商:Vishay Semiconductors 产品:Photodiodes 反向电压:10 V 最大暗电流:30 nA 峰值波长:565 nm 上升时间:3.1 us 下降时间:3 us 半强度角度:50 deg 封装 / 箱体:TO-5 |
| OP993 | 制造商:TT Electronics / OPTEK Technology 功能描述:OPTICAL SENSOR (PHOTODETECTOR - "P-N") P |
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