参数资料
| 型号： | ADA4860-1YRJZ-RL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 9/21页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP CF LP 85MA SOT23-6 |
| 产品培训模块： | Practical Guide High Speed PCB Layout |
| 标准包装： | 10,000 |
| 放大器类型： | 电流反馈 |
| 电路数： | 1 |
| 转换速率： | 980 V/µs |
| -3db带宽： | 520MHz |
| 电流 - 输入偏压： | 1.5µA |
| 电压 - 输入偏移： | 3500µV |
| 电流 - 电源： | 6mA |
| 电流 - 输出 / 通道： | 85mA |
| 电压 - 电源，单路/双路(±)： | 5 V ~ 12 V，±2.5 V ~ 6 V |
| 工作温度： | -40°C ~ 105°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-6 |
| 供应商设备封装： | SOT-23-6 |
| 包装： | 带卷 (TR) |
ADA4860-1
Rev. 0 | Page 16 of 20
OPTIMIZING FLATNESS AND BANDWIDTH
When using the ADA4860-1, a variety of circuit conditions and
parasitics can affect peaking, gain flatness, and 3 dB
bandwidth. This section discusses how the ADA4860-1 small
signal responses can be dramatically altered with basic circuit
changes and added stray capacitances, see the Layout and
Circuit Board Parasitics section for more information.
Particularly with low closed-loop gains, the feedback resistor
(Rf) effects peaking and gain flatness. However, with gain = +1,
3 dB bandwidth varies slightly, while gain = +2 has a much
larger variation. For gain = +1, Figure 56 shows the effect that
various feedback resistors have on frequency response. In
Figure 56, peaking is wide ranging yet 3 dB bandwidths vary
by only 6%. In this case, the user must pick what is desired:
more peaking or flatter bandwidth. Figure 57 shows gain = +2
bandwidth and peaking variations vs. RF and RL. Bandwidth
delta vs. RL increase was approximately 17%. As RF is reduced
from 560 Ω to 301 Ω, the 3 dB bandwidth changes 49%, with
excessive compromises in peaking, see Figure 57. For more gain
2
–6
–5
–4
–3
–2
–1
0
1
100
10
10000
1000
N
O
R
M
A
L
IZ
E
D
GA
IN
(
d
B
)
FREQUENCY (MHz)
05
70
9-
0
44
VS = ±5V
G = +1
VOUT = 0.1V p-p
RL = 100
RF = 560
RF = 680
RF = 910
RF = 1.5k
Figure 56. Small Signal Frequency Response vs. RF
2
–6
–5
–4
–3
–2
–1
0
1
100
10
1000
N
O
R
M
A
L
IZ
E
D
GA
IN
(
d
B
)
FREQUENCY (MHz)
05
70
9-
0
45
VS = ±5V
G = +2
VOUT = 0.1V p-p
RG = RF
RF = 301, RL = 100
RF = 560, RL = 100
RF = 560, RL = 1k
Figure 57. Small Signal Frequency Response vs. RF vs. RL
The impact of resistor case sizes was observed using the circuit
drawn in Figure 58. The types and sizes chosen were 0402 case
sized thin film and 1206 thick film. All other measurement
conditions were kept constant except for the case size and
resistor composition.
05
70
9-
0
49
ADDED CLOAD
EXAMPLE
RG
49.9
+
–
50
RF
ADDED CJ
EXAMPLE
DASH LINE IS PLANE CLEAR OUT AREA
(EXCEPT SUPPLY PINS) DURING PC LAYOUT.
Figure 58. Noninverting Gain Setup for Illustration of
Parasitic Effects, 50 Ω System, RL = 100 Ω
In Figure 59, a slight 3 dB bandwidth delta of approximately
+10% can be seen going from a small-to-large case size. The
increase in bandwidth with the larger 1206 case size is caused
by an increase in parasitic capacitance across the chip resistor.
1
–6
–5
–4
–3
–2
–1
0
1
100
10
1000
N
O
R
M
A
L
IZ
E
D
GA
IN
(
d
B
)
FREQUENCY (MHz)
05
70
9-
0
46
VS = ±5V
G = +2
VOUT = 0.1V p-p
RG = RF = 560
RL = 100
1206 RESISTOR SIZE
0402 RESISTOR SIZE
Figure 59. Small Signal Frequency Response vs. Resistor Size
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADA4860-1YRJZ-RL7 | 功能描述:IC OPAMP CF LP 85MA SOT23-6 RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 产品培训模块:Differential Circuit Design Techniques for Communication Applications 标准包装:1 系列:- 放大器类型:RF/IF 差分 电路数:1 输出类型:差分 转换速率:9800 V/µs 增益带宽积:- -3db带宽:2.9GHz 电流 - 输入偏压:3µA 电压 - 输入偏移:- 电流 - 电源:40mA 电流 - 输出 / 通道:- 电压 - 电源，单路/双路(±):3 V ~ 3.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-VQFN 裸露焊盘，CSP 供应商设备封装:16-LFCSP-VQ 包装:剪切带 (CT) 产品目录页面:551 (CN2011-ZH PDF) 其它名称:ADL5561ACPZ-R7CT |
| ADA4861-3 | 制造商:AD 制造商全称:Analog Devices 功能描述:High Speed, Low Cost, Triple Op Amp |
| ADA4861-3YR-EBZ | 功能描述:BOARD EVAL FOR ADA4861-3YR RoHS:是 类别:编程器，开发系统 >> 评估板 - 运算放大器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- |
| ADA4861-3YRZ | 功能描述:IC OPAMP CF TRPL LP 100MA 14SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 产品培训模块:Differential Circuit Design Techniques for Communication Applications 标准包装:1 系列:- 放大器类型:RF/IF 差分 电路数:1 输出类型:差分 转换速率:9800 V/µs 增益带宽积:- -3db带宽:2.9GHz 电流 - 输入偏压:3µA 电压 - 输入偏移:- 电流 - 电源:40mA 电流 - 输出 / 通道:- 电压 - 电源，单路/双路(±):3 V ~ 3.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-VQFN 裸露焊盘，CSP 供应商设备封装:16-LFCSP-VQ 包装:剪切带 (CT) 产品目录页面:551 (CN2011-ZH PDF) 其它名称:ADL5561ACPZ-R7CT |
| ADA4861-3YRZ-RL | 功能描述:IC OPAMP CF TRPL LP 100MA 14SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:2,500 系列:- 放大器类型:通用 电路数:1 输出类型:满摆幅 转换速率:0.11 V/µs 增益带宽积:350kHz -3db带宽:- 电流 - 输入偏压:4nA 电压 - 输入偏移:20µV 电流 - 电源:260µA 电流 - 输出 / 通道:20mA 电压 - 电源，单路/双路(±):2.7 V ~ 36 V，±1.35 V ~ 18 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商设备封装:8-SO 包装:带卷 (TR) |
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