參數(shù)資料
型號(hào)： ADA4830-2BCPZ-R7
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 10/23頁(yè)
文件大小： 0K
描述： IC AMP BATT PROTECT DUAL 16LFCSP
標(biāo)準(zhǔn)包裝： 1
放大器類(lèi)型： 差分
電路數(shù)： 2
轉(zhuǎn)換速率： 220 V/µs
-3db帶寬： 84MHz
電流 - 電源： 6.8mA
電流 - 輸出 / 通道： 125mA
電壓 - 電源，單路/雙路(±)： 2.9 V ~ 5.5 V
工作溫度： -40°C ~ 125°C
安裝類(lèi)型： 表面貼裝
封裝/外殼： 16-WFQFN 裸露焊盤(pán)，CSP
供應(yīng)商設(shè)備封裝： 16-LFCSP-WQ（3x3）
包裝： 標(biāo)準(zhǔn)包裝
其它名稱(chēng)： ADA4830-2BCPZ-R7DKR
Data Sheet
ADA4830-1/ADA4830-2
Rev. C | Page 17 of 22
DRIVING CAPACITIVE LOADS
The ADA4830-1 and ADA4830-2 are capable of driving large
capacitive loads while maintaining its rated performance.
Several performance curves vs. capacitive load are shown in
Figure 12 and Figure 25. Capacitive loads interact with an op amp’s
output impedance to create an extra delay in the feedback path.
This reduces circuit stability and can cause unwanted ringing
and oscillation.
The capacitive load drive of the ADA4830-1and ADA4830-2 can
be increased by adding a low valued resistor, RS, in series with the
capacitive load. Figure 35 shows the test circuit.
ADA4830-1
+
–
CL = 47pF
RS = 49.9
RL = 1k
10020-
052
Figure 35. RS Test Circuit
Introducing a series resistor tends to isolate the capacitive load
from the feedback loop, thereby diminishing its influence. One
drawback to this approach is a slight loss of signal amplitude.
Figure 36 shows the effects of a series resistor on the capacitive
drive. For very large capacitive loads, the frequency response of
the amplifier is dominated by the roll-off of the series resistor
and capacitive load.
1.0
1.5
2.0
2.5
3.0
3.5
4.0
0
50
100
150
200
250
V
O
UT
(V)
TIME (ns)
10020-
135
+VS = 5V
RL = 1kΩ
CL = 47pF
NO RS
RS = 49.9
Figure 36. Pulse Response With and Without Series Resistor
Another method of reducing the resonant peaking caused by
driving large capacitive loads at the output of the ADA4830-1
and ADA4830-2 is with the use of a R-C shunt circuit or a snubber
circuit. This method acts to resistively load the amplifier output,
thus reducing frequency response peaking. One drawback to this
approach is a slight loss of signal bandwidth. Figure 37 shows a
simple circuit representation of the implementation of the R-C
snubber circuit with RSNT and CSNT. Figure 38 shows the effects of
a R-C snubber circuit driving 47 pF, where RSNT = 73.2 and CSNT
= 0.1 F.
ADA4830-1
+
–
CL = 47pF
CSNT = 0.1uF
RL = 1k
RSNT = 73.2
10020-
053
Figure 37. R-C Test Circuit
1.0
1.5
2.0
2.5
3.0
3.5
4.0
0
50
100
150
200
250
V
O
UT
(V)
TIME (ns)
10020-
137
+VS = 5V
RL = 1kΩ
CL = 47pF
NO SNUBBER
CIRCUIT
RSNT = 73.2Ω
CSNT = 0.1F
Figure 38. Pulse Response With and Without R-C Snubber Circuit
相關(guān)PDF資料
PDF描述
ADA4841-2YRZ-R7 IC OPAMP VF R-R DUAL LP LN 8SOIC
ADA4850-2YCPZ-R2 IC OPAMP VF R-R DUAL 16LFCSP
ADA4851-4YRUZ IC OPAMP VF R-R QUAD LP 14TSSOP
ADA4855-3YCPZ-R7 IC OPAMP VF R-R TRPL LP 16LFCSP
ADA4857-2YCPZ-RL IC OPAMP VF DUAL ULDIST 16LFCSP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADA4830-2WBCPZ-R7 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:High Speed Difference Amplifier with Input
ADA484 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:16-Bit, 1 MSPS PulSAR ADC in MSOP QFN
ADA4841 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:14-Bit, 500 kSPS PulSAR ADC in MSOP
ADA4841-1 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:16-Bit Lower Power
ADA4841-1YR-EBZ 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:Low Power, Low Noise and Distortion ail-to-Rail Output Amplifiers
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*