参数资料
| 型号： | OP470EY |
| 厂商： | Analog Devices Inc |
| 文件页数： | 6/16页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP GP 6MHZ QUAD LN 14CDIP |
| 标准包装： | 25 |
| 放大器类型： | 通用 |
| 电路数： | 4 |
| 转换速率： | 2 V/µs |
| 增益带宽积： | 6MHz |
| 电流 - 输入偏压： | 6nA |
| 电压 - 输入偏移： | 100µV |
| 电流 - 电源： | 9mA |
| 电压 - 电源，单路/双路(±)： | 9 V ~ 36 V，±4.5 V ~ 18 V |
| 工作温度： | -25°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 14-CDIP（0.300"，7.62mm） |
| 供应商设备封装： | 14-CERDIP |
| 包装： | 管件 |
| 产品目录页面： | 772 (CN2011-ZH PDF) |
REV. B
OP470
–14–
SQUELCH AMPLIFIER
The circuit of Figure 17 is a simple squelch amplifier that uses a
FET switch to cut off the output when the input signal falls
below a preset limit.
The input signal is sampled by a peak detector with a time
constant set by C1 and R6. When the output of the peak detector
(Vp), falls below the threshold voltage, (VTH), set by R8, the
comparator formed by op amp C switches from V– to V+. This
drives the gate of the N-channel FET high, turning it ON, re-
ducing the gain of the inverting amplifier formed by op amp A
to zero.
1/4
OP470E
A
R1
2k
VOUT – –5VIN
R2
10k
2N5434
R5
100k
VIN
1/4
OP470E
B
R3
2k
R4
10k
D1
1N4148
C1
1 F
R6
1M
1/4
OP470E
C
R4
10M
D2
1N4148
R7
10k
+
C2
10 F
V+
R6
10k
= 1 SECOND
Figure 17. Squelch Amplifier
FIVE-BAND LOW-NOISE STEREO GRAPHIC EQUALIZER
The graphic equalizer circuit shown in Figure 18 provides 15 dB
of boost or cut over a 5-band range. Signal-to-noise ratio over a
20 kHz bandwidth is better than 100 dB referred to a 3 V rms
input. Larger inductors can be replaced by active inductors but
this reduces the signal-to-noise ratio.
R1
47k
1/4
OP470E
R13
3.3k
+
R14
100
VOUT
R4
1k
60Hz
R2
3.3k
1/4
OP470E
VIN
C1
0.47 F
C2
6.8 F
TANTALUM
L1
1H
R3
680
+
R4
1k
200Hz
C3
1 F
TANTALUM
L2
1H
R5
680
+
R4
1k
800Hz
C4
0.22 F
TANTALUM
L3
1H
R7
680
+
R4
1k
3kHz
C5
0.047 F
TANTALUM
L4
1H
R9
680
+
R4
1k
10kHz
C6
0.022 F
TANTALUM
L5
1H
R11
680
Figure 18. Five-Band Low Noise Graphic Equalizer
相关PDF资料 |
PDF描述 |
|---|---|
| 929836-02-04-RK | CONN HEADER .100 DUAL STR 8POS |
| OP400EY | IC OPAMP GP 500KHZ QUAD 14CDIP |
| 929835-01-26-RK | CONN HEADER .100 SNGL R/A 26POS |
| LT2079AIS#PBF | IC OPAMP MICROPOWER QUAD 14SOIC |
| 929834-05-15-RK | CONN HEADER .100 SNGL STR 15POS |
相关代理商/技术参数 |
参数描述 |
|---|---|
| OP-470EY | 制造商:AD 制造商全称:Analog Devices 功能描述:VERY LOW NOISE QUAD OPERATIONAL AMPLIFIER |
| OP470FY | 制造商:Analog Devices 功能描述: |
| OP-470FY | 制造商:AD 制造商全称:Analog Devices 功能描述:VERY LOW NOISE QUAD OPERATIONAL AMPLIFIER |
| OP470G | 制造商:Analog Devices 功能描述: |
| OP-470G | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual/Quad Low Noise, Precision Operational Amplifiers |
发布紧急采购，3分钟左右您将得到回复。