MAX3941EVKIT Datasheet MAX3941EVKIT | P1-P3

__________________________________________________________________Maxim Integrated Products 1

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Evaluates: MAX3941

MAX3941 Evaluation Kit

_________________General Description

The MAX3941 evaluation kit (EV kit) is an assembled

demonstration board that provides electrical evaluation of

the MAX3941 10.7Gbps EAM driver. The output is

interfaced to an SMA connector that can be connected to

a 50Ω terminated oscilloscope.

_____________________ Component List

DESIGNATION QTY DESCRIPTION

C1 1

22µF ±10% tantalum capacitor

AVX TAJB226K010

C2 1

10µF ±10% tantalum capacitor

AVX TAJA106K010

C3 1

0.1µF ±10% ceramic capacitor

(0402) Murata

C6, C12, C13,

C15, C20

100pF ±5% ceramic capacitors

(0201) Murata

C8, C11, C16,

C17, C18, C42

0.01µF ±10% ceramic capacitors

(0402)

J1−J4, J7

SMA connectors, edge mount,

EF Johnson 142-0701-851

J5, J8, J9 3 SMB connectors, PC mount

JP1, JP3, JP5 3 3-pin headers, 0.1in centers

JP2, JP4,

JP6, JP7

4 2-pin headers, 0.1in centers

L1 1 47nH inductor (0402)

L2 1 3.3nH inductor (0201)

R1, R3, R5 3

2kΩ variable resistors

Bourns 3296W-202

R2, R9 2

1kΩ ±5% resistors (0402)

R4 1

4.02kΩ ±1% resistor (0402)

R6 1

2kΩ ±1% resistor (0402)

TP1−TP4,

TP13, TP14,

TP15, J10, J11

9 Test points

U1 1 MAX3941ETG

None 1

MAX3941 EV kit circuit board,

rev A

None 1 MAX3941 EV kit data sheet

None 1 MAX3941 data sheet

None 7 Shunts

_____________________________Features

♦ SMA Connectors for All High-Speed I/Os

♦ Configured for Electrical Operation, No Laser

Necessary

♦ Single -5.2V Power-Supply Operation

♦ Fully Assembled and Tested

_________________Ordering Information

PART TEMP RANGE IC PACKAGE

MAX3941EVKIT -40°C to +85°C 24 THIN QFN

________________ Component Suppliers

SUPPLIER PHONE FAX

AVX 843-444-2863 843-626-3123

EF Johnson 402-474-4800 402-474-4858

Murata 415-964-6321 415-964-8165

Note: Please indicate that you are using the MAX3941 when

ordering from these suppliers.

_________________ Detailed Description

The MAX3941 EV kit is a fully assembled and factory

tested demonstration board that enables testing of all

MAX3941 functions.

Test Equipment Required

Test Equipment RequiredTest Equipment Required

Test Equipment Required

•

-5.2V power supply with 300mA current capability

• Signal-source, 10Gbps minimum capability

• Oscilloscope with at least 15GHz performance

Test Equipment Interface

Test Equipment InterfaceTest Equipment Interface

Test Equipment Interface

Warning: The data and clock inputs (DATA±, CLK±) are

DC-coupled to the SMA connectors, so be sure to set

proper common-mode voltages for these inputs. The

combination bias and modulation output (OUT) is also DC-

coupled to the SMA connector and requires a 50Ω to

ground load for proper operation.

19-3079; Rev 0; 11/03

MAX3941 Evaluation Kit

2 __________________________________________________________________________________________________

Evaluates: MAX3941

_____________________________________________________________________ Quick Start

1) If the data is to be latched, place shunt on JP7 (RTEN)

to enable the clock inputs. Otherwise, leave it open.

2) Install a jumper on JP2.

3) Install a jumper on the right side of JP3. This allows

adjustment of MODSET using R3.

4) Install a jumper on the left side of JP5. This allows

adjustment of BIASSET.

5) To use the pulse-width control (PWC) install a jumper

on the lower two pins of JP1. To disable PWC place a

jumper on the top two pins of JP1.

6) Ensure that a jumper is not installed on JP6 (MODEN)

and enable modulation.

7) Connect a differential signal source to J1 (DATA+)

and J2 (DATA-). Refer to the MAX3941 data sheet to

determine voltage levels.

8) If the latch is enabled, apply a differential clock signal

to J3 (CLK+) and J4 (CLK-). Refer to the MAX3941

data sheet to determine voltage levels.

9) Connect a high-bandwidth oscilloscope, such as the

Tektronix CSA8000 with the 80E01 sampling head, to

J7 (OUT).

10) A high-quality SMA attenuator (14dB or 20dB) is

required to reduce the signal level for compatibility

with the most sampling heads. The attenuator should

be connected directly to the output SMA connector on

the EV kit to minimize transmission line reflections.

11) Attach a -5.2V power supply to J10 (GND) and J11

). Set the current limit to 300mA and power up

the board.

12) Adjust R3 until the desired modulation swing is

achieved.

13) Adjust R5 until the desired bias voltage is achieved.

14) Adjust R1 until the desired pulse width is achieved (if

PWC is enabled, see step 5).

15) If desired, place a shunt on JP4 (PLRT) to invert the

output data polarity.

_______________________________________ Adjustments and Control Descriptions

COMPONENT NAME FUNCTION

JP1 PWC

This jumper enables/disables the pulse-width-control circuitry. Place a shunt on

the top two pins to disable the PWC circuitry. Place a shunt on the bottom two pins

to enable the PWC circuitry.

JP3 MODSET

Place a jumper on the right-hand side of this jumper to connect the R

MODSET

potentiometer to the MAX3941. Place a jumper on the left-hand side of this jumper

to connect the MODSET pin to the SMB connector for AC testing.

JP4 PLRT

Enables/disables the polarity inversion function. Shunt to invert the polarity of the

output data. Shunting this jumper shorts the PLRT pin to V

. Leave open for

normal operation.

JP5 BIASSET

Place a jumper on the left-hand side of this jumper to connect the R

BIASSET

potentiometer to the MAX3941. Place a jumper on the right-hand side of this

jumper to connect the BIASSET pin to the SMB connector for AC testing.

JP6

MODEN

Enables/disables modulation output. Shunt to disable switching of the data output.

When shunted, the output goes to the absorbtive (logic 0) state. Remove shunt to

enable modulation.

JP7

RTEN

Enables/disables data retiming. Shunt to enable data retiming. Remove shunt for

direct data transmission.

R1 R

PWC

Adjusts the EAM pulse width. Turn the potentiometer screw counter-clockwise to

increase the logic 1 width.

R3 R

MODSET

Adjusts the EAM modulation current. Turn the potentiometer screw clockwise to

increase the modulation amplitude (decrease the resistance of MODSET to GND).

R5 R

BIASSET

Adjusts the EAM bias current. Turn the potentiometer screw clockwise to increase

bias current (decrease the resistance from BIASSET to GND).

MAX3941 Evaluation Kit

________________________________________________________________________________________________ 3

Evaluates: MAX3941

Figure 1. MAX3941 EV Kit Schematic

P1-P3 P4-P6

MAX3941EVKIT

Mfr. #:

Buy MAX3941EVKIT

Manufacturer:

Maxim Integrated

Description:

Other Development Tools EVAL KIT FOR MAX3941

Lifecycle:

New from this manufacturer.

Delivery:

DHL FedEx Ups TNT EMS

Payment:

T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet

MAX3941EVKIT