- 您现在的位置：买卖IC网 > Datasheet目录475 > MAX9996EVKIT (Maxim Integrated)EVAL KIT FOR MAX9996 Datasheet资料下载
参数资料
| 型号： | MAX9996EVKIT |
| 厂商： | Maxim Integrated |
| 文件页数： | 4/8页 |
| 文件大小： | 0K |
| 描述： | EVAL KIT FOR MAX9996 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 类型： | 混频器 |
| 频率： | 1.7GHz ~ 2.2GHz |
| 适用于相关产品： | MAX9996 |
| 已供物品： | 板 |
MAX9996 Evaluation Kit
Layout Considerations
The MAX9996 evaluation board can be a guide for your
board layout. Pay close attention to thermal design and
close placement of components to the IC. The MAX9996
0.75pF to ground. The total 2.75pF of capacitance is
resonated out at the frequency of interest by bias
inductors L1 and L2. To determine the inductor value
use the following equation:
package exposed paddle (EP) conducts heat from the
device and provides a low-impedance electrical connec-
tion to the ground plane. The EP MUST be attached to
f IF =
1
2 π LC
the PC board ground plane with a low-thermal and elec-
trical impedance contact. Ideally, this is achieved by sol-
dering the backside of the package directly to a top
metal ground plane on the PC board. Alternatively, the
EP can be connected to an internal or bottom-side
ground plane using an array of plated vias directly below
the EP. The MAX9996EV kit uses nine evenly spaced,
0.016in-diameter, plated through holes to connect the
EP to the lower ground planes.
Depending on the ground-plane spacing, large sur-
face-mount pads in the IF path may need to have the
ground plane relieved under them to reduce parasitic
shunt capacitance.
Modifying the EV Kit
The RF and LO inputs are broadband matched, so
there is no need to modify the circuit for use anywhere
in the 1700MHz to 2200MHz RF range (1900MHz to
2400MHz LO range).
Retuning for a different IF is as simple as scaling the
values of the IF pullup inductors up or down with fre-
quency. The IF output looks like 200 ? differential in
parallel with a capacitor. The capacitance is due to the
combination of the IC, PC board, and external IF com-
ponents. The capacitance from the IC is approximately
2pF to ground (1pF differential), while that from the PC
board and external components is approximately
The IF output is tuned for operation at approximately
140MHz, so a 470nH inductor is used. For lower IF fre-
quency (i.e., larger component values), maintain the
component’s Q value at the cost of larger case size,
unless it is unavoidable.
The DC current of the device can be reduced but the
performance will be degraded. Reducing the current is
accomplished by increasing the values of R1 and R2.
Resistor R1 sets the current in the IF amplifier, whereas
R2 sets the current in the LO buffer that drives the
mixer core.
Setting R1 to 806 ? and R2 to 549 ? results in IF and LO
currents of 100mA and 90mA, respectively.
Approximately 24mA of additional current is used in
other circuits and cannot be reduced. To reduce these
adjustable currents in half, double the values of R1 and
R2. Doing so would reduce the current to approximately
120mA but the gain and IP3 would drop approximately
0.35dB and 4.7dB, respectively. Some of the other per-
formance values will degrade or improve due to
reduced current.
Since the linearity of the device is a result of the cascad-
ed performance of the IF amplifier and the mixer, care-
fully choose the correct combination of R1 and R2 to
produce the highest IP3 at the lowest desired current.
Component Suppliers
SUPPLIER
Coilcraft
Digi-Key
Johnson
Mini-Circuits
Murata
PHONE
800-322-2645
800-344-4539
507-833-8822
718-934-4500
770-436-1300
WEBSITE
www.coilcraft.com
www.digikey.com
www.johnsoncomponents.com
www.minicircuits.com
www.murata.com
Note: Indicate that you are using the MAX9996 when contacting these component suppliers.
4
_______________________________________________________________________________________
相关PDF资料 |
PDF描述 |
|---|---|
| MC-7831-AZ | IC PUSH-PULL AMP 870MHZ H02 |
| MC-7832-AZ | IC PUSH-PULL AMP 870MHZ H02 |
| MC-7833-AZ | IC PUSH-PULL AMP 870MHZ H02 |
| MC-7834-KC-AZ | IC PUSH-PULL AMP 870MHZ H02 |
| MC-7845-AZ | IC AMPLIFIER DBL 870MHZ H02 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX999AAUK+ | 制造商:Maxim Integrated Products 功能描述: |
| MAX999AAUK+T | 功能描述:校验器 IC Single uPower Comparator RoHS:否 制造商:STMicroelectronics 产品: 比较器类型: 通道数量: 输出类型:Push-Pull 电源电压-最大:5.5 V 电源电压-最小:1.1 V 补偿电压（最大值）:6 mV 电源电流（最大值）:1350 nA 响应时间: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SC-70-5 封装:Reel |
| MAX999EUK | 制造商:Maxim Integrated Products 功能描述:5 PIN COUNT SOT PACKAGE TYPE - Rail/Tube 制造商:Maxim Integrated Products 功能描述:COMPARATOR HIGH SPEED SMD SOT235 |
| MAX999EUK/GG8 | 制造商:Maxim Integrated Products 功能描述:5 PIN COUNT SOT PACKAGE TYPE - Rail/Tube |
| MAX999EUK/GH9 | 制造商:Maxim Integrated Products 功能描述:SINGLE/DUAL/QUAD, ULTRA-HIGH-SPEED, +3V/+5V, BEYOND-THE-RAIL - Rail/Tube |
发布紧急采购，3分钟左右您将得到回复。