參數(shù)資料
型號(hào): OP470AYMDA
廠商: ANALOG DEVICES INC
元件分類: 運(yùn)動(dòng)控制電子
英文描述: Very Low Noise Quad Operational Amplifier
中文描述: QUAD OP-AMP, 600 uV OFFSET-MAX, 6 MHz BAND WIDTH, CDIP14
封裝: GLASS SEALED, CERDIP-14
文件頁(yè)數(shù): 14/16頁(yè)
文件大?。?/td> 658K
代理商: OP470AYMDA
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
V
OUT
– –5V
IN
R2
10k
2N5434
R5
100k
V
IN
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
+
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
V
OUT
R4
1k
60Hz
R2
3.3k
1/4
OP470E
V
IN
C1
0.47 F
C2
+
TANTALUM
L1
1H
R3
680
+
R4
1k
200Hz
C3
1 F
TANTALUM
L2
1H
R5
680
R4
1k
800Hz
C4
0+
TANTALUM
L3
1H
R7
680
R4
1k
3kHz
C5
0.+
TANTALUM
L4
1H
R9
680
R4
1k
10kHz
C6
0.+
TANTALUM
L5
1H
R11
680
Figure 18. Five-Band Low Noise Graphic Equalizer
相關(guān)PDF資料
PDF描述
OP470FY Very Low Noise Quad Operational Amplifier
OP470 Very Low Noise Quad Operational Amplifier
OP470AY Very Low Noise Quad Operational Amplifier
OP470EY Very Low Noise Quad Operational Amplifier
OP470GP Very Low Noise Quad Operational Amplifier
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
OP-470E 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual/Quad Low Noise, Precision Operational Amplifiers
OP-470EJ 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual/Quad Low Noise, Precision Operational Amplifiers
OP470EY 功能描述:IC OPAMP GP 6MHZ QUAD LN 14CDIP RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 放大器類型:通用 電路數(shù):4 輸出類型:- 轉(zhuǎn)換速率:0.6 V/µs 增益帶寬積:1MHz -3db帶寬:- 電流 - 輸入偏壓:45nA 電壓 - 輸入偏移:2000µV 電流 - 電源:1.4mA 電流 - 輸出 / 通道:40mA 電壓 - 電源,單路/雙路(±):3 V ~ 32 V,±1.5 V ~ 16 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP(0.173",4.40mm 寬) 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:帶卷 (TR) 其它名稱:LM324ADTBR2G-NDLM324ADTBR2GOSTR
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: