MAX2410EVKIT_技术文档

19-1320; Rev 1; 3/98

MAX2 4 1 0 Eva lu a t io n Kit

Evluates:MAX2410

________________Ge n e ra l De s c rip t io n

____________________________Fe a t u re s

♦ +2.7V to +5.5V Single-Supply Operation

♦ 50Ω SMA Inputs and Outputs on RF and IF Ports

♦ Allows Testing of Shutdown Mode

The MAX2410 evaluation kit (EV kit) simplifies testing of the

MAX2410. This EV kit allows evaluation of the MAX2410’s

low-nois e a mp lifie r (LNA), re c e ive d ownc onve rte r

mixer, transmit upconverter mixer, variable-gain power-

amplifier (PA) driver, and power-management features.

♦ Fully Assembled and Tested

_______________Ord e rin g In fo rm a t io n

____________________Co m p o n e n t Lis t

DESIGNATION QTY

DESCRIPTION

PART

TEMP. RANGE

IC-PACKAGE

C1, C2

2

47pF ceramic capacitors, 0603 size

MAX2410EVKIT

-40°C to +85°C

28 QSOP

10µF tantalum capacitor

AVX TAJC106K016

C3

1

______________Co m p o n e n t S u p p lie rs

C4, C5,

C6, C8

4

7

5

0.1µF ceramic capacitors, 0805 size

220pF ceramic capacitors, 0805 size

1000pF ceramic capacitors, 0805 size

SUPPLIER

PHONE

INTERNET

C7, C10, C11,

C16, C17,

C19, C20

(803) 946-0690

(803) 626-3123 FAX

AVX

http://www.avxcorp.com

(847) 639-6400

(847) 639-1469 FAX

C9, C15, C18,

C23, C24

Coilcraft

http://www.coilcraft.com

http://www.t-yuden.com

Taiyo Yuden

USA

(408) 573-4150

(408) 573-4159 FAX

C12, C14,

C22, C25, C26

0

1

Not installed

C21

1pF ceramic capacitor, 0805 size

18nH inductor, 0805 size

Coilcraft 0805CS-180XMBC

_________________________Qu ic k S t a rt

The MAX2410 EV kit is fully assembled and factory test-

ed. Follow these instructions for initial evaluation of the

MAX2410.

L1

5.6nH inductor, 0805 size

Taiyo Yuden HK16085N6S

L2

1

2

68nH inductors, 0805 size

Coilcraft 0805CS-680XKBC

L3, L12

Te s t Eq u ip m e n t Re q u ire d

This section lists the recommended test equipment to

verify operation of the MAX2410. It is intended as a

guide only, and some substitutions may be possible.

L4, L5

2

0

0Ω resistors, 0805 size

L6, L7, L9

Not installed

3.9nH inductors, 0805 size

Taiyo Yuden HK16083N9S

• Two RF signal generators capable of delivering at

least 0dBm of output power up to 2GHz (HP8648C,

or equivalent).

L8, L13

2

82nH inductor, 0805 size

Coilcraft 0805CS-820XKBC

L11

1

3

• An RF spectrum analyzer that covers the operating

frequency range of the MAX2410 as well as a few

harmonics (HP8561E, for example).

R1, R2, R3

1kΩ resistors, 0805 size

LNAIN,

LNAOUT, IFIN,

IFOUT, LO,

PADRIN,

PADROUT,

TXMXOUT

• A power supply which can provide up to 100mA at

+2.7V to +5.5V.

8

SMA edge-mount connectors

• A voltage source (0V to 5V) for adjusting the gain-

control (GC) voltage on the PA driver.

• An optional ammeter for measuring the supply cur-

RXMXIN

1

3

SMA PC-mount connector

3-pin headers

rent.

RXEN, TXEN,

VGC

• Several 50Ω SMA cables.

VCC, GND

U1

2

1

2-pin headers

MAX2410EEI 28-pin QSOP

________________________________________________________________ Maxim Integrated Products

1

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.

For small orders, phone 1-800-835-8769.

MAX2 4 1 0 Eva lu a t io n Kit

5) Connect the spectrum analyzer to the IFOUT SMA

connector. Set the spectrum analyzer to a 400MHz

c e nte r fre q ue nc y, a 200MHz tota l s p a n, a nd a

0dBm reference level.

Co n n e c t io n s a n d S e t u p

This section provides a step-by-step guide to operating

the EV kit and testing all four major functions: the LNA,

receive mixer, transmit mixer, and PA driver. Do not

turn on the DC power or RF signal generators until

all connections are made.

6) Turn on the DC supply, LO signal generator, and RF

input signal generator.

7) The downconverted output signal at 400MHz is visi-

ble on the spectrum analyzer, indicating a mixer

conversion gain of typically 8.3dB after accounting

for cable losses.

Low-Noise Amplifier

1) Set the RXEN jumper on the EV kit to the “Logic 1”

position and the TXEN jumper to the “Logic 0” posi-

tion. This enables the MAX2410’s receive mode.

2) Connect a DC supply set to 3V (through an amme-

Power-Amplifier Driver

1) Remove any RF signal connections made in the

ter if desired) to the V and GND terminals on the

CC

EV kit. Do not turn on the supply.

above tests. The V and GND connections should

CC

remain as before. Turn off the V

making connections.

supply while

3) Connect one RF signal generator to the LNAIN SMA

connector; do not turn on the generator’s output.

Set the generator for an output frequency of 1.9GHz

at a power level of -40dBm.

CC

2) Set the RXEN jumper to the “Logic 0” position and

the TXEN jumper to the “Logic 1” position. This

enables the MAX2410’s transmit mode.

4) Connect a spectrum analyzer to the LNAOUT SMA

connector on the EV kit. Set it to a center frequency

of 1.9GHz, a total span of 200MHz, and a reference

level of 0dBm.

Evluates:MAX2410

3) Set the voltage source to be used for the gain-con-

trol voltage to 2.15V, and turn it off. Connect it to the

middle pin of the V jumper on the EV kit.

GC

5) Turn on the DC supply. The supply current should

read approximately 20mA (if using an ammeter).

4) Connect an RF signal generator set to 1.9GHz, at a

power level of -10dBm with the output disabled, to

the PADRIN SMA connector.

6) Activate the RF generator’s output. A signal on the

spectrum analyzer’s display should indicate a typi-

cal gain of 16.2dB after accounting for cable losses.

5) Connect the PADROUT SMA connector to the spec-

trum analyzer. Configure the analyzer to a center

frequency of 1.9GHz, a reference level of +10dBm,

and 200MHz total span.

7) If desired, the shutdown feature can be tested by

moving the RXEN jumper into the “Logic 0” position.

The supply current should drop to less than 10µA.

6) Turn on the DC supply, V voltage source, and RF

GC

signal generator.

Receive Downconverter Mixer

1) Remove the RF signal generator and spectrum ana-

lyzer from the LNAIN and LNAOUT connections if

necessary. The DC supply connections needed for

testing the downconverter mixer are the same as in

the LNA section. Turn off the DC supply while mak-

ing connections.

7) The supply current should read typically 30mA. A

1.9GHz signal should be visible on the spectrum

analyzer’s display indicating a typical gain of 15dB

after accounting for cable losses.

8) Lowering the voltage on the V

voltage source to

GC

0V should reduce the gain by typically 35dB.

2) Set the RXEN jumper on the EV kit to the “Logic 1”

position and the TXEN jumper to the “Logic 0” posi-

tion. This enables the MAX2410’s receive mode.

Transmit Upconverter Mixer

1) Remove any RF signal connections made in the

above tests. The V and GND connections should

CC

3) Connect one RF signal generator (with the output

disabled) to the LO SMA connector. Set the fre -

quency to 1.5GHz and the output power to -10dBm.

This is the LO signal.

remain as before. Turn off the V supply. The VGC

CC

voltage source is not needed for this test.

2) Set the RXEN jumper to the “Logic 0” position and

the TXEN jumper to the “Logic 1” position. This

enables the MAX2410’s transmit mode.

4) Connect the other RF signal generator to the RXMXIN

SMA connector (with the output disabled). Set the

fre q ue nc y to 1.9GHz a nd the outp ut p owe r to

-30dBm. This is the RF input signal.

3) Connect one RF signal generator (with the output

disabled) to the LO SMA connector. Set the fre-

quency to 1.5GHz and the output power to -10dBm.

This is the LO signal.

2

_______________________________________________________________________________________

MAX2 4 1 0 Eva lu a t io n Kit

Evluates:MAX2410

4) Connect the other RF signal generator (with the out-

put disabled) to the IFIN SMA connector. Set the

generator to a frequency of 400MHz and a power

level of -32dBm. This is the IF signal.

PA Driver Amplifier

The PA driver amplifier input is internally matched to

50Ω for 1.9GHz operation. Capacitor C11 is necessary

for DC blocking. The gain of the PA driver is adjustable

by applying a voltage on the middle pin of the V

jumper, which is connected through a 1kΩ resistor (R3)

to the GC pin of the MAX2410. C8 and R3 form a filter

GC

5) Connect the TXMXOUT SMA connector to the spec-

trum analyzer. Configure the analyzer for a center

frequency of 1.9GHz, a reference level of 0dBm,

and 200MHz total span.

to reduce any noise from the V

supply. Alternatively,

GC

by inserting a shunt, it is possible to set this voltage to

6) Turn on the DC supply, LO signal generator, and IF

signal generator.

ground or V . The position labeled “Logic 0” is con-

CC

nected to ground, and the “Logic 1” position is set to

7) The supply current should typically read 30mA. The

spectrum analyzer should show a 1.9GHz signal

indicating a conversion gain of typically 10dB after

accounting for cable losses.

V

.

CC

IF Input

The IFIN pin of the MAX2410 is a high-impedance input

that is internally biased. Inductor L11 provides a simple

matching network. C23 is used for DC blocking. As with

the IFOUT pin above, additional component footprints

have been placed to allow further experimentation:

C14, C25, L4, L6, and L7.

8) To observe the remainder of the TX mixer output

spectrum, increase the span on the spectrum ana-

lyzer from 200MHz to 2GHz.

_______________De t a ile d De s c rip t io n

The MAX2410 EV kit circuitry is described in this sec-

tion. For more detailed information about the operation

of the device itself, please consult the MAX2410 data

sheet.

TX Mixer Output

The transmit mixer output appears on the TXMXOUT

pin, which requires a pull-up inductor (L2) to V

as

CC

well as a matching network to a 50Ω load impedance

consisting of inductors L2 and L13. C19 serves as a

DC block.

Re c e ive r

This section describes the LNA and receive mixer sec-

tions of the MAX2410 EV kit.

Lo c a l Os c illa t o r

The MAX2410 EV kit’s LO input only requires a DC

blocking capacitor (C20). No other circuitry is required.

For more information on the LO port, including the

optional use of a differential LO source, consult the

MAX2410 data sheet.

Low-Noise Amplifier

The LNA circuitry consists of two DC blocking capaci-

tors, one at the input (C7) and one at the output (C17).

A s hunt c a p a c itor (C21) is us e d a s a s imp le inp ut

matching network.

________________P o w e r Ma n a g e m e n t

IF Output

The RXEN and TXEN jumpers on the EV kit control the

op e ra ting mod e s of the MAX2410. Re fe r to the

MAX2410 data sheet for a table of operating modes.

Series resistors R1 and R2 and capacitors C5 and C6

are included on the RXEN and TXEN inputs to provide

filtering between logic and RF circuitry.

The IFOUT pin of the MAX2410 is an open-collector

output that is externally biased to V

by inductor L3

CC

and matched with inductors L3 and L12. C24 provides

DC blocking. There are additional component footprints

available on the EV kit layout for designing a more com-

plex matching network: C12, C26, L5, and L9.

______________________________La yo u t

A good PC board is an essential part of an RF circuit

design. The EV kit PC board can serve as a guide for

laying out a board using the MAX2410.

RX Mixer Input

The receive mixer’s input, RXMXIN, requires a simple

matching network. Capacitor C16 provides DC block-

ing, and L8 is used to match the input pin to 50Ω.

Component footprint (C22) is available for additional

matching network prototyping.

Each V

node on the PC board should have its own

CC

decoupling capacitor. This minimizes supply coupling

from one section of the MAX2410 to another. A star

Tra n s m it t e r

This section describes the PA driver and transmit mixer

sections of the MAX2410 EV kit.

topology for the supply layout, in which each V node

CC

on the MAX2410 circuit has a separate connection to a

c e ntra l V

nod e , c a n furthe r minimize c oup ling

CC

between sections of the MAX2410 (Figure 5).

_______________________________________________________________________________________

3

MAX2 4 1 0 Eva lu a t io n Kit

LNAOUT

SMA

L8

3.9nH

RXMXIN

SMA

C17

220pF

27

C22

OPEN

C16

220pF

1

2

3

LNAOUT

28

24

22

26

GND

C7

220pF

LNAIN

SMA

LNAIN

GND

RXMXIN

IFIN

C23

1000pF

C21

1pF

L11

82nH

L4

SHORT

IFIN

SMA

C14

OPEN

C25

OPEN

4

5

GND

L6

OPEN

L7

OPEN

V

CC

25

V

CC

C1

47pF

MAX2410

V

CC

C20

220pF

7

8

LO

SMA

LO

C15

1000pF

A

L3

68nH

L12

68nH

C24

1000pF

V

CC

L5

SHORT

10

21

23

IFOUT

SMA

IFOUT

GND

V

CC

C2

C12

C26

OPEN

12

14

GND

47pF

OPEN

L9

OPEN

V

CC

V

CC

20

C18

GND

1000pF

L2

5.6nH

C9

1000pF

C19

220pF

L13

3.9nH

L1

18nH

19

16

TXMXOUT

SMA

TXMXOUT

PADRIN

13

PADRIN

SMA

PADROUT

SMA

PADROUT

C11

C10

220pF

RXEN TXEN GC

GND GND GND

15 17 18

V

CC

V

CC

V

CC

6

9

11

LOGIC 1

JU3

JU2

JU1

V

CC

C5

0.1µF

R1

1k

LOGIC 0

V

CC

C3

10µF

C4

0.1µF

V

GC

TXEN RXEN

GND

C6

0.1µF

R2

1k

C8

0.1µF

R3

1k

Figure 1. MAX2410 EV Kit Schematic

_______________________________________________________________________________________

4

MAX2 4 1 0 Eva lu a t io n Kit

Evluates:MAX2410

1.0"

Figure 2. MAX2410 EV Kit Component Placement Guide

Figure 3. MAX2410 EV Kit PC Board Layout—Component Side

_______________________________________________________________________________________

5

MAX2 4 1 0 Eva lu a t io n Kit

Evluates:MAX2410

1.0"

Figure 4. MAX2410 EV Kit PC Board Layout—Ground Plane

Figure 5. MAX2410 EV Kit PC Board Layout—Solder Side

6

_______________________________________________________________________________________

MAX2 4 1 0 Eva lu a t io n Kit

Evluates:MAX2410

NOTES

_______________________________________________________________________________________

7

MAX2 4 1 0 Eva lu a t io n Kit

NOTES

Evluates:MAX2410

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are

implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

8

_____________________Ma x im In t e g ra t e d P ro d u c t s , 1 2 0 S a n Ga b rie l Drive , S u n n yva le , CA 9 4 0 8 6 4 0 8 -7 3 7 -7 6 0 0


型号：	MAX2410EVKIT
厂家：	MAXIM INTEGRATED PRODUCTS
描述：	Evaluation Kit for MAX2410 评估板MAX2410\n
文件：	总8页 (文件大小：83K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

MAX2410EVKIT [MAXIM]

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