参数资料
| 型号： | OP4177ARUZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 14/24页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP GP 1.3MHZ QUAD 14TSSOP |
| 产品培训模块： | Power Line Monitoring |
| 标准包装： | 96 |
| 放大器类型： | 通用 |
| 电路数： | 4 |
| 转换速率： | 0.7 V/µs |
| 增益带宽积： | 1.3MHz |
| 电流 - 输入偏压： | 500pA |
| 电压 - 输入偏移： | 15µV |
| 电流 - 电源： | 400µA |
| 电流 - 输出 / 通道： | 10mA |
| 电压 - 电源，单路/双路(±)： | 5 V ~ 36 V，±2.5 V ~ 18 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 14-TSSOP |
| 包装： | 管件 |
| 产品目录页面： | 774 (CN2011-ZH PDF) |
OP1177/OP2177/OP4177
Rev. G | Page 21 of 24
REALIZATION OF ACTIVE FILTERS
BAND-PASS KRC OR SALLEN-KEY FILTER
The low offset voltage and the high CMRR of the OPx177 make
it an excellent choice for precision filters, such as the band-pass
KRC filter shown in Figure 67. This filter type offers the capability
to tune the gain and the cutoff frequency independently.
Because the common-mode voltage into the amplifier varies with
the input signal in the KRC filter circuit, a high CMRR is required
to minimize distortion. Also, the low offset voltage of the OPx177
allows a wider dynamic range when the circuit gain is chosen to
be high.
The circuit of Figure 67 consists of two stages. The first stage is
a simple high-pass filter where the corner frequency (fC) is
C1C2R1R2
π
2
1
(2)
and
R2
R1
K
Q
=
(3)
where K is the dc gain.
Choosing equal capacitor values minimizes the sensitivity and
simplifies Equation 2 to
R1R2
C
π
2
1
The value of Q determines the peaking of the gain vs. frequency
(ringing in transient response). Commonly chosen values for Q
are generally near unity.
Setting
2
1
Q
=
yields minimum gain peaking and minimum
ringing. Determine values for R1 and R2 by using Equation 3.
For
,
2
1
Q
=
R1/R2 = 2 in the circuit example. Select R1 = 5 kΩ
and R2 = 10 kΩ for simplicity.
The second stage is a low-pass filter where the corner frequency
can be determined in a similar fashion. For R3 = R4 = R
C4
C3
Q
C4
C3
πR
f
C
2
1
and
2
1
=
CHANNEL SEPARATION
Multiple amplifiers on a single die are often required to reject
any signals originating from the inputs or outputs of adjacent
channels. OP2177 input and bias circuitry is designed to prevent
feedthrough of signals from one amplifier channel to the other.
As a result, the OP2177 has an impressive channel separation of
greater than 120 dB for frequencies up to 100 kHz and greater
than 115 dB for signals up to 1 MHz.
02
62
7-
0
67
C3
680pF
1/2
OP2177
7
8
6
5
4
V+
V–
1/2
OP2177
1
2
3
R2
10k
V1
+
–
R1
20k
C2
10nF
C1
10nF
R3
33k
R4
33k
C4
330pF
VOUT
Figure 67. Two-Stage, Band-Pass KRC Filter
1
2
3
1/2
OP2177
100
10k
1/2
OP2177
7
8
6
5
4
V+
V–
+
–
0
2
627-
0
68
V1
50mV
Figure 68. Channel Separation Test Circuit
REFERENCES ON NOISE DYNAMICS
AND FLICKER NOISE
S. Franco, Design with Operational Amplifiers and Analog
Integrated Circuits. McGraw-Hill, 1998.
Analog Devices, Inc., The Best of Analog Dialogue, 1967 to
1991. Analog Devices, Inc., 1991.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| OP4177ARUZ | 制造商:Analog Devices 功能描述:Operational Amplifier (Op-Amp) IC |
| OP4177ARUZ1 | 制造商:AD 制造商全称:Analog Devices 功能描述:Precision Low Noise, Low Input Bias Current Operational Amplifiers |
| OP4177ARUZ-REEL | 功能描述:IC OPAMP GP 1.3MHZ QUAD 14TSSOP RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:73 系列:Over-The-Top® 放大器类型:通用 电路数:4 输出类型:满摆幅 转换速率:0.07 V/µs 增益带宽积:200kHz -3db带宽:- 电流 - 输入偏压:1nA 电压 - 输入偏移:285µV 电流 - 电源:50µA 电流 - 输出 / 通道:25mA 电压 - 电源，单路/双路(±):2 V ~ 44 V，±1 V ~ 22 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-WFDFN 裸露焊盘 供应商设备封装:16-DFN-EP（5x3） 包装:管件 |
| OP4177ARUZ-REEL1 | 制造商:AD 制造商全称:Analog Devices 功能描述:Precision Low Noise, Low Input Bias Current Operational Amplifiers |
| OP4177ARZ | 功能描述:IC OPAMP GP 1.3MHZ QUAD 14SOIC 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:4 输出类型:- 转换速率:0.6 V/µs 增益带宽积:1MHz -3db带宽:- 电流 - 输入偏压:45nA 电压 - 输入偏移:2000µV 电流 - 电源:1.4mA 电流 - 输出 / 通道:40mA 电压 - 电源，单路/双路(±):3 V ~ 32 V，±1.5 V ~ 16 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:14-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:14-TSSOP 包装:带卷 (TR) 其它名称:LM324ADTBR2G-NDLM324ADTBR2GOSTR |
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