MAX7411CUA+ [MAXIM]

MAXFILTERBRD; MAXFILTERBRD


型号：	MAX7411CUA+
厂家：	MAXIM INTEGRATED PRODUCTS
描述：	MAXFILTERBRD MAXFILTERBRD LTE
文件：	总5页 (文件大小：466K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

19-4884; Rev 0; 8/09

MAXFILTERBRD

General Description

The MAXFILTERBRD is an unpopulated PCB design to

evaluate the MAX7408–MAX7415/MAX7418–MAX7425

5th-order, lowpass, switched-capacitor filters (SCFs).

Features

S CLK Pad for External Clock Frequency

S Lead(Pb)-Free and RoHS Compliant

S Proven PCB Layout

Contact the factory for free samples of the pin-compat-

ible MAX7408–MAX7415/MAX7418–MAX7425 SCFs to

evaluate these devices.

Ordering Information

PART

TYPE

MAXFILTERBRD+

EV Kit

+Denotes lead(Pb)-free and RoHS compliant.

Part Selection Table

Component List

(Suggested Components)

OPERATING

PART

FILTER TYPE

DESIGNATION QTY

DESCRIPTION

VOLTAGE

MAX7408CUA+

MAX7409CUA+

MAX7410CUA+

MAX7411CUA+

MAX7412CUA+

MAX7413CUA+

MAX7414CUA+

MAX7415CUA+

MAX7418CUA+

MAX7419CUA+

MAX7420CUA+

MAX7421CUA+

MAX7422CUA+

MAX7423CUA+

MAX7424CUA+

MAX7425CUA+

Elliptic

Bessel

Not installed, 47pF Q5%, 50V

C0G ceramic capacitor (0805)

Murata GRM2165C1H470J or

similar

Butterworth

Elliptic

Not installed, 2200pF Q5%, 50V

C0G ceramic capacitor (0805)

Murata GRM2165C1H222J or

similar

Elliptic

Bessel

Butterworth

Elliptic

Not installed, 0.1FF Q10%, 16V

X7R ceramic capacitors (0603)

Murata GCM188R71C104K or

similar

Elliptic

C3, C4

Bessel

Butterworth

Elliptic

Not installed, 2-pin headers—

shorted by PC trace

JU1, JU2

Elliptic

Bessel

Not installed, 10kI Q1% resistor

(0805)

Butterworth

Elliptic

Not installed, lowpass SCF

Note: Contact the factory to order a free sample of any of the

SCF parts.

—

(8 FMAX )

See the Part Selection Table

PCB: MAXFILTERBRD+

Component Supplier

SUPPLIER

PHONE

770-436-1300

WEBSITE

Murata Electronics North America, Inc.

www.murata-northamerica.com

Note: Indicate that you are using the MAXFILTERBRD when contacting this component supplier.

µMAX is a registered trademark of Maxim Integrated Products, Inc.

_______________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

MAXFILTERBRD

OSCILLOSCOPE

Tektronix TDS3012

OR SIMILAR

SINE-WAVE INPUT

FUNCTION GENERATOR 1

Agilent 33120A OR SIMILAR

SINE-WAVE FREQUENCY:

0.001kHz TO 15kHz

FILTER’S SINE-WAVE OUTPUT

FILTEREVKIT

AMPLITUDE: 4V MAX

P-P

OFFSET: 2.2V TYPICAL

EXTERNAL CLOCK

GND

+5V/+3V

POWER SUPPLY

HP E3610 OR SIMILAR

Figure 1. Filter Evaluation Test Block Diagram

the 5V supply to the VDD pad and the negative termi-

nal of the supply to the GND pad closest to the VDD

pad. If the installed IC is the MAX7412–MAX7415 or

MAX7422–MAX7425, connect the positive terminal

of the 3V supply to the VDD pad and the negative

terminal of the supply to the GND pad closest to the

VDD pad (see Figure 1). Set the function generator

Quick Start

Required Equipment

• MAXFILTERBRD

• Suggested components (see Component List)

• 5V or 3V DC power supply (depending on the IC

installed)

to 4V

max, 2.2V offset (typ), and 1kHz sine wave,

P-P

• Function generator (e.g., HP 33120A)

and connect the signal to the IN pad.

• 2-channel digital oscilloscope (e.g., Tektronix TDS3012)

3) Connect the first channel of the oscilloscope to the

IN pad.

Procedure

Caution: Do not turn on power supply until all connec-

tions are completed.

4) Connect the second channel of the oscilloscope to

the OUT pad.

5) Connect the oscilloscope’s ground probe to any GND

pads.

1) Install all suggested components shown in the

Component List onto the MAXFILTERBRD.

6) Turn on the power supply.

2) If the installed IC is the MAX7408–MAX7411 or

MAX7418–MAX7421, connect the positive terminal of

7) Verify the output on the OUT pad.

______________________________________________________________________________________

MAXFILTERBRD

External Clock

An external clock that matches the specification of the

corresponding IC data sheet can be used by cutting

the trace of jumper JU2. Drive the CLK pin with a CMOS

gate powered from 0 to VDD. Apply the clock signal to

the CLK pad.

Detailed Description of Hardware

The MAXFILTERBRD is an unpopulated PCB design to

evaluate the MAX7408–MAX7415/MAX7418–MAX7425

5th-order, lowpass SCFs.

Internal Clock

The MAXFILTERBRD uses the internal oscillator when

a capacitor is installed on C1. Refer to corresponding

installed IC data sheet.

Shutdown

The MAXFILTERBRD is configured for normal operation

once the desired IC is installed. The desired IC enters

shutdown by cutting the trace of jumper JU1 and driving

the IC SHDN pin low through the side of the jumper that

is still connected to the part.

For the MAX7409/MAX7410/MAX7413/MAX7414, the

frequency can be altered using the following formula:

(kHz) = k/C1 (pF)

OSC

where k = 30 x 10 and f

is the internal oscillator

OSC

frequency.

For the MAX7408/MAX7411/MAX7412/MAX7415, k = 27 x 10 .

For the MAX7418/MAX7421/MAX7422/MAX7425, k = 87 x 10 .

FortheMAX7419/MAX7420/MAX7423/MAX7424, k=110x10 .

_______________________________________________________________________________________

MAXFILTERBRD

Figure 2. MAXFILTERBRD Schematic

______________________________________________________________________________________

MAXFILTERBRD

Figure 3. MAXFILTERBRD Component Placement Guide—

Component Side

Figure 5. MAXFILTERBRD PCB Layout—Solder Side

Figure 4. MAXFILTERBRD Component PCB Layout—

Component Side

Figure 6. MAXFILTERBRD Component Placement Guide—

Solder Side

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.

Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600

2009 Maxim Integrated Products

Maxim is a registered trademark of Maxim Integrated Products, Inc.

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