參數(shù)資料
型號: OP470EY
廠商: Analog Devices Inc
文件頁數(shù): 6/16頁
文件大?。?/td> 0K
描述: IC OPAMP GP 6MHZ QUAD LN 14CDIP
標(biāo)準(zhǔn)包裝: 25
放大器類型: 通用
電路數(shù): 4
轉(zhuǎn)換速率: 2 V/µs
增益帶寬積: 6MHz
電流 - 輸入偏壓: 6nA
電壓 - 輸入偏移: 100µV
電流 - 電源: 9mA
電壓 - 電源,單路/雙路(±): 9 V ~ 36 V,±4.5 V ~ 18 V
工作溫度: -25°C ~ 85°C
安裝類型: 通孔
封裝/外殼: 14-CDIP(0.300",7.62mm)
供應(yīng)商設(shè)備封裝: 14-CERDIP
包裝: 管件
產(chǎn)品目錄頁面: 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
相關(guān)PDF資料
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
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
OP-470EY 制造商:AD 制造商全稱: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 制造商全稱: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 制造商全稱:Linear Technology 功能描述:Dual/Quad Low Noise, Precision Operational Amplifiers