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参数资料
| 型号： | ADA4858-3ACP-EBZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 6/20页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR ADA4858-3ACP |
| 标准包装： | 1 |
| 每 IC 通道数： | 3 - 三 |
| 放大器类型： | 电流反馈 |
| 板类型： | 裸（未填充） |
| 已供物品： | 板 |
| 已用 IC / 零件： | 16-LFCSP 封装 |
ADA4858-3
Data Sheet
Rev. B | Page 14 of 20
APPLICATIONS INFORMATION
GAIN CONFIGURATIONS
The ADA4858-3 is a single-supply, high speed, voltage feedback
amplifier. Table 5 provides a convenient reference for quickly
determining the feedback and gain set resistor values and band-
width for common gain configurations.
Gain
R
F ()
R
G ()
Small Signal
3 dB BW (MHz)
Large Signal 0.1 dB
Flatness (MHz)
1
402
N/A
600
88
2
301
350
85
5
200
40
160
35
1 Conditions: V
S = 5 V, TA = 25°C, RL = 150 .
Figure 38 and Figure 39 show the typical noninverting and
inverting configurations and the recommended bypass
capacitor values.
07714-
139
+VS
VIN
VOUT
ADA4858-3
+
–
10F
0.1F
RG
RF
Figure 38. Noninverting Gain Configuration
07714-
140
+VS
VIN
VOUT
ADA4858-3
–
+
10F
0.1F
RG
RF
Figure 39. Inverting Gain Configuration
DC-COUPLED VIDEO SIGNAL
The ADA4858-3 does not have a rail-to-rail output stage. The
output can be within 1 V of the rails. Having a charge pump on
board that can provide 3 V on a +5 V supply and 2 V on
+3.3 V supply makes this part excellent for video applications. In
dc-coupled applications, the black color has a 0 V voltage reference.
This means that the output voltage should be able to reach 0 V,
which is feasible with the presence of the charge pump. Figure 40
shows the schematic of a dc-coupled, single-supply application.
It is similar to the dual-supply application in which the input is
properly terminated with a 50 resistor to ground. The amplifier
itself is set at a gain of 2 to account for the input termination loss.
The choice of RF and RG should be carefully considered for
maximum flatness vs. power dissipation trade-off. In this case, the
flatness is over 90 MHz, which is more than the high definition
video requirement.
07714-
141
5V
VIN
VOUT
ADA4858-3
U1
+
–
C1
10F
C2
0.1F
R4
75
R3
249
R5
75
R2
249
R1
75
–VS
Figure 40. DC-Coupled, Single-Supply Schematic
MULTIPLE VIDEO DRIVER
In applications requiring that multiple video loads be driven
simultaneously, the ADA4858-3 can deliver 5 V supply operation.
Figure 41 shows the ADA4858-3 configured with two video
loads, and Figure 42 shows the two video load performances.
07714-
142
+VS
ADA4858-3
–
+
10F
0.1F
RG
301
RF
301
75
CABLE
VIN
75
VOUT1
75
CABLE
75
VOUT2
75
CABLE
75
Figure 41. Video Driver Schematic for Two Video Loads
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
1
10
100
1000
C
LOS
E
D
-LOOP
GA
IN
(
dB
)
FREQUENCY (MHz)
RL = 150
RL = 75
VS = 5V
RF = 301
G = 2
VOUT = 2V p-p
07714-
040
Figure 42. Large Signal Frequency Response for Various Loads
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADA4858-3ACPZ-R2 | 制造商:Analog Devices 功能描述:OP AMP TRIPLE CURRENT FDBK 5.5V 16LFCSP EP - Tape and Reel 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述:IC OP-AMP 600MHZ 600V/ LFCSP-16 制造商:Analog Devices 功能描述:Single Supply High Spd RR Video Amp 制造商:Analog Devices 功能描述:IC, OP-AMP, 600MHZ, 600V/s, LFCSP-16, Op Amp Type:High Speed, No. of Amplifiers:3, Bandwidth:600MHz, Slew Rate:600V/s, Supply Voltage Range:3V to 5.5V, Amplifier Case Style:LFCSP, No. of Pins:16 , RoHS Compliant: Yes |
| ADA4858-3ACPZ-R7 | 功能描述:IC OPAMP CF TRPL LP 21MA 16LFCSP RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:100 系列:- 放大器类型:通用 电路数:1 输出类型:- 转换速率:0.2 V/µs 增益带宽积:- -3db带宽:- 电流 - 输入偏压:100pA 电压 - 输入偏移:30µV 电流 - 电源:380µA 电流 - 输出 / 通道:- 电压 - 电源，单路/双路(±):±2 V ~ 18 V 工作温度:0°C ~ 70°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:管件 |
| ADA4858-3ACPZ-RL | 功能描述:IC OPAMP CF TRPL LP 21MA 16LFCSP RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:50 系列:- 放大器类型:通用 电路数:2 输出类型:满摆幅 转换速率:1.8 V/µs 增益带宽积:6.5MHz -3db带宽:4.5MHz 电流 - 输入偏压:5nA 电压 - 输入偏移:100µV 电流 - 电源:65µA 电流 - 输出 / 通道:35mA 电压 - 电源，单路/双路(±):1.8 V ~ 5.25 V，±0.9 V ~ 2.625 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-MSOP 包装:管件 |
| ADA4859-3 | 制造商:AD 制造商全称:Analog Devices 功能描述:Single-Supply, Fixed G = 2, High Speed, Video Amplifier with Charge Pump |
| ADA4859-3ACP-EBZ | 功能描述:BOARD EVAL FOR ADA4859-3ACP RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:* 标准包装:1 系列:- 主要目的:电信，线路接口单元（LIU） 嵌入式:- 已用 IC / 零件:IDT82V2081 主要属性:T1/J1/E1 LIU 次要属性:- 已供物品:板，电源，线缆，CD 其它名称:82EBV2081 |
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