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参数资料
| 型号： | AD8129AR-EBZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 1/8页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR AD8129AR |
| 标准包装： | 1 |
| 每 IC 通道数： | 1 - 单 |
| 放大器类型： | 差分 |
| 板类型： | 裸（未填充） |
| 已供物品： | 板 |
| 已用 IC / 零件： | 8-SOIC 封装 |
Evaluation Board User Guide
One Technology Way ? P.O. Box 9106 ? Norwood, MA 02062-9106, U.S.A. ? Tel: 781.329.4700 ? Fax: 781.461.3113 ? www.analog.com
Differential Receiver Evaluation Boards for Amplifiers
Offered in 8-Lead SOIC and MSOP Packages
INTRODUCTION
The Analog Devices, Inc., differential receiver evaluation boards
(for the MSOP and SOIC) make it easy for designers to quickly
assess the performance of a particular differential receiver
application circuit. The evaluation board is a bare board (that
is, there are no components soldered to the board) that is very
flexible and allows for several feedback configurations, common-
mode and differential input terminations, reference voltage
applications, and other circuit features. Most resistors and
capacitors on the board are in 1206 packages.
DEVICES COVERED
POWER SUPPLIES
Power is applied to the boards through J1, a Molex 0022112032
3-pin header. Pin 1 (square footprint) is for the positive supply,
Pin 3 is for the negative supply, and Pin 2 is connected to the
ground plane of the board. Alternatively, looped test points can
be used: TP6 connects to the positive supply, TP7 connects to
the negative supply, and TP8, TP9, TP10, and TP11 connect to
The board can accommodate single and dual supplies. For
single-supply operation, connect the negative supply to the
ground plane.
It is very important that the power supply pins of the device under
test (DUT) have decoupling circuitry. The board layout facilitates
such decoupling by including footprints for a 1206 ceramic
capacitor on each supply. For broadband decoupling, it is recom-
mended that two ceramic capacitors be used: one for lower
frequencies and one for higher frequencies. To use two capacitors
on each supply, stack two 1206 ceramic capacitors on the same
footprint. Bulk decoupling is provided by C1 and C3; 10 μF
tantalum capacitors are recommended.
FEEDBACK NETWORKS AND INPUT/OUTPUT
TERMINATIONS
R6 compose the resistive feedback loop that can be returned to
ground through R8 or to the reference voltage circuitry, VR1
and C7. Capacitor C5 and Capacitor C6 are included across the
feedback resistor and gain resistor, respectively, to implement
first-order frequency response shaping. C6 introduces a pole
into the feedback loop, which must be compensated for by C5.
A reference voltage can be injected at Pin 4 of the DUT. Using
Potentiometer VR1, which spans the power supplies, the designer
can adjust the reference voltage over a wide range. C7 provides
bypassing on the wiper of VR1. A test point, TP5, is provided
for monitoring the reference voltage. When VR1 is used, it is
important to ensure that JU3 is shorted.
To minimize parasitic summing node capacitance, the ground
plane has been voided under and around Pin 5 of the DUT and
the copper that connects to it.
Differential termination is provided by R3, and common-
mode terminations are provided by R1 and R2. C9 and C10
allow optional input ac coupling and must be shorted across
when not used. JU1 provides the means to directly monitor the
differential input by using a suitable high impedance differential
probe, or to directly short across the differential inputs for test
purposes. Standard 0.100-inch pitch headers can be used in JU1.
Alternatively, TP2 and TP3, which accommodate looped-type
test points, can be used.
A source termination resistor, R7, is included on the output to
facilitate driving coaxial cables and test equipment. The output
signal can be monitored before the source termination resistor
at TP4. Because TP4 is the direct amplifier output, any test
equipment connected to TP4 adds to the capacitive load of the
amplifier, thus diminishing the phase margin. Extreme care
should be exercised when connecting test equipment to TP4.
INPUT/OUTPUT CONNECTORS
The inputs and outputs have edge-mounted Subminiature A (SMA)
connectors for straightforward connection to coaxial cables.
Johnson Components Part Number 142-0701-801, or the
equivalent, is recommended. On the inputs, TP13 and TP14
provide the option of using straight or right-angle through-hole
SMA connectors.
POWER-DOWN
Pull-up Resistor R4 and Jumper JU2 make it easy for the power-
down feature of the DUT to be asserted. The recommended
value for R4 is 1 k?. As with JU1, a 0.100-inch pitch header can
be used for JU2.
OTHER COMPONENTS
There may be application circuits where footprints for desired
components are not available on the board. In these cases, the
user is encouraged to use his or her ingenuity to find ways to
include them.
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. B | Page 1 of 8
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相关代理商/技术参数 |
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| AD8129ARM | 制造商:Analog Devices 功能描述:SP Amp DIFF Receiver Amp Single ±12.6V/25.2V 8-Pin MSOP Tube 制造商:Rochester Electronics LLC 功能描述:MICROSO 275MHZ HI-SPEED DIFF'L RECEIVER - Bulk 制造商:Analog Devices 功能描述:AMPLIFIER IC NUMBER OF CIRCUITS:1 |
| AD8129ARM-EBZ | 功能描述:BOARD EVAL FOR AD8129ARM 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:- |
| AD8129ARM-REEL | 制造商:Analog Devices 功能描述:SP Amp DIFF Receiver Amp Single 制造商:Analog Devices 功能描述:SP Amp DIFF Receiver Amp Single ±12.6V/25.2V 8-Pin MSOP T/R |
| AD8129ARM-REEL3 | 制造商:AD 制造商全称:Analog Devices 功能描述:Low-Cost 270 MHz Differential Receiver Amplifiers |
| AD8129ARM-REEL7 | 制造商:Analog Devices 功能描述:SP Amp DIFF Receiver Amp Single 制造商:Analog Devices 功能描述:SP Amp DIFF Receiver Amp Single ±12.6V/25.2V 8-Pin MSOP T/R 制造商:Rochester Electronics LLC 功能描述:MICROSO 275MHZ HI-SPEED DIFF'L RECEIVER - Tape and Reel |
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