參數(shù)資料
型號(hào)： AD8027ART-R2
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 13/25頁(yè)
文件大?。?/td> 0K
描述： IC OPAMP R-R LDIST LN LP SOT23-6
標(biāo)準(zhǔn)包裝： 1
放大器類(lèi)型： 電壓反饋
電路數(shù)： 1
輸出類(lèi)型： 滿(mǎn)擺幅
轉(zhuǎn)換速率： 100 V/µs
-3db帶寬： 190MHz
電流 - 輸入偏壓： 4µA
電壓 - 輸入偏移： 200µV
電流 - 電源： 6.5mA
電流 - 輸出 / 通道： 120mA
電壓 - 電源，單路/雙路(±)： 2.7 V ~ 12 V，±1.35 V ~ 6 V
工作溫度： -40°C ~ 125°C
安裝類(lèi)型： 表面貼裝
封裝/外殼： SOT-23-6
供應(yīng)商設(shè)備封裝： SOT-23-6
包裝： 剪切帶 (CT)
其它名稱(chēng)： AD8027ART-R2CT
AD8027/AD8028
Rev. C | Page 19 of 24
WIDEBAND OPERATION
Voltage feedback amplifiers can use a wide range of resistor
values to set their gain. Proper design of the application’s
feedback network requires consideration of the following issues:
Poles formed by the amplifier’s input capacitances with the
resistances seen at the amplifier’s input terminals
Effects of mismatched source impedances
Resistor value impact on the application’s voltage noise
Amplifier loading effects
The AD8027/AD8028 have an input capacitance of 2 pF. This
input capacitance forms a pole with the amplifier’s feedback
network, destabilizing the loop. For this reason, it is generally
desirable to keep the source resistances below 500 Ω, unless
some capacitance is included in the feedback network. Likewise,
keeping the source resistances low also takes advantage of the
AD8027/AD8028’s low input referred voltage noise of
4.3 nV/√Hz.
With a wide bandwidth of over 190 MHz, the AD8027/AD8028
have numerous applications and configurations. The AD8027/
AD8028 part shown in Figure 57 is configured as a noninvert-
ing amplifier. An easy selection table of gain, resistor values,
bandwidth, slew rate, and noise performance is presented in
Table 5, and the inverting configuration is shown in Figure 58.
+V
–V
C2
10
μF
C1
0.1
μF
C4
0.1
μF
C3
10
μF
VOUT
RG
R1
RF
SELECT
VIN
R1 = RF||RG
AD8027/
AD8028
+
–
03327-A-056
Figure 57. Wideband Noninverting Gain Configuration
Table 5. Component Values, Bandwidth, and Noise
Performance (VS = ±2.5 V)
Noise Gain
(Noninverting)
RSOURCE
(Ω)
RF
(Ω)
RG
(Ω)
–3 dB
SS BW
(MHz)
Output
Noise with
Resistors
(nV/√Hz)
1
50
0
N/A
190
4.4
2
50
499
95
10
50
499
54.9
13
45
+V
–V
C2
10
μF
C1
0.1
μF
C4
0.1
μF
C3
10
μF
R1
C5
VOUT
RG
R1 = RF||RG
RF
VIN
SELECT
AD8027/
AD8028
+
–
03327-A-057
CF
Figure 58. Wideband Inverting Gain Configuration
CIRCUIT CONSIDERATIONS
Balanced Input Impedances
Balanced input impedances can help to improve distortion
performance. When the amplifier transitions from PNP pair to
NPN pair operation, a change in both the magnitude and
direction of the input bias current occurs. When multiplied
times imbalanced input impedances, a change in offset can
result. The key to minimizing this distortion is to keep the input
impedances balanced on both inputs. Figure 59 shows the effect
of the imbalance and degradation in distortion performance for
a 50 Ω source impedance, with and without a 50 Ω balanced
feedback path.
FREQUENCY (MHz)
0.1
1
10
20
DISTORTION
(dB)
–100
–90
–80
–70
–60
–50
–40
–30
–20
G = +1
VOUT = 2V p-p
RL = 1kΩ
VS = +3V
RF = 24.9Ω
RF = 49.9Ω
RF = 0Ω
03327-A-058
Figure 59. SFDR vs. Frequency and Various RF
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參數(shù)描述
AD8027ART-REEL 制造商:Analog Devices 功能描述:OP Amp Single GP R-R I/O
AD8027ART-REEL7 功能描述:IC OPAMP R-R LDIST LN LP SOT23-6 RoHS:否 類(lèi)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(lèi)型:通用 電路數(shù):1 輸出類(lèi)型:滿(mǎn)擺幅 轉(zhuǎn)換速率:0.11 V/µs 增益帶寬積:350kHz -3db帶寬:- 電流 - 輸入偏壓:4nA 電壓 - 輸入偏移:20µV 電流 - 電源:260µA 電流 - 輸出 / 通道:20mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 36 V，±1.35 V ~ 18 V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:8-SO 包裝:帶卷 (TR)
AD8027ARTZ 制造商:Analog Devices 功能描述:OP AMP R-R LDIST LN LP SOT23-6 制造商:Analog Devices 功能描述:OP AMP, R-R, LDIST, LN, LP, SOT23-6 制造商:Analog Devices 功能描述:OP AMP, R-R, LDIST, LN, LP, SOT23-6; Op Amp Type:Rail to Rail; No. of Amplifiers:1; Slew Rate:100V/s; Supply Voltage Range:2.7V to 12V; Amplifier Case Style:SOT-23; No. of Pins:6; Bandwidth:190MHz; Operating Temperature Min:-40C; ;RoHS Compliant: Yes 制造商:Analog Devices 功能描述:Amplifier,Op-Amp,V feedback,AD8027ARTZ
AD8027ARTZ-R2 功能描述:IC OPAMP R-R LDIST LN LP SOT23-6 RoHS:是 類(lèi)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(lèi)型:通用 電路數(shù):1 輸出類(lèi)型:滿(mǎn)擺幅 轉(zhuǎn)換速率:0.11 V/µs 增益帶寬積:350kHz -3db帶寬:- 電流 - 輸入偏壓:4nA 電壓 - 輸入偏移:20µV 電流 - 電源:260µA 電流 - 輸出 / 通道:20mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 36 V，±1.35 V ~ 18 V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:8-SO 包裝:帶卷 (TR)
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