Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsDev KitsPCB design board

General Description

The MAX4206 evaluation kit (EV kit) is a fully assembled

and tested surface-mount circuit board that demon-

strates the MAX4206 logarithmic amplifier. The MAX4206

computes the log ratio of an input current relative to a

reference current and provides a corresponding voltage

output with a default 0.25V/decade scale factor. The EV

kit operates from a single +2.7V to +11V supply or from

dual ±2.7V to ±5.5V supplies, with the ability to select

one of four reference currents.

The MAX4206 EV kit can be used to evaluate the

MAX4207 by changing the IC and the input RC networks

R1, R2, C7, and C8.

Features

♦ +2.7V to +11V Single-Supply Operation or ±2.7V

to ±5.5V Dual-Supply Operation

♦ Selectable 10nA/100nA/1µA/10µA On-Board

Reference Current

♦ Adjustable Output Scale Factor

♦ Surface-Mount Construction

♦ Fully Assembled and Tested

Evaluates: MAX4206/MAX4207

MAX4206 Evaluation Kit

________________________________________________________________ Maxim Integrated Products 1

19-3397; Rev 0; 8/04

Component List

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.

Ordering Information

DESIGNATION QTY DESCRIPTION

C1 1

10µF ±20%, 16V X5R ceramic

capacitor (1206)

TDK C3216X5R1C106M

C2 1

10µF ±20%, 6.3V X5R ceramic

capacitor (0805)

Taiyo Yuden JMK212BJ106MG or

TDK C2012X5R0J106M

C3–C6 4

0.1µF ±10%, 25V X7R ceramic

capacitors (0603)

TDK C1608X7R1E104K

C7, C8 2

100pF ±5%, 50V C0G ceramic

capacitors (0603)

Murata GRM1885C1H101J or

TDK C1608C0G1H101J

D1, D2 0 Not installed, photodiode (TO-46)

R1, R2 2 100Ω ±1% resistors (0603)

R3 0 Not installed, resistor (0603)

R4 0 Not installed, potentiometer

R5 1

30.1kΩ ±0.1%, precision chip

resistor (0603)

ICR PCF-W0603R-03-3012-B or

Vishay P0603K3012BB

DESIGNATION QTY DESCRIPTION

R6–R9 4

10kΩ ±0.1%, precision chip

resistors (0603)

IRC PCF-W0603R-03-1002-B or

Vishay P0603K1002BB

R10 1

4.99MΩ ±0.5%, precision chip

resistor (0805)

IRC CR0805F4M99D or

Vishay D11P10049940.5PN

R11 1

499kΩ ±0.5%, precision chip

resistor (0805)

IRC PCF-W0805R-03-4993-D or

Vishay D11P10049930.5PN

R12 1

49.9kΩ ±0.5%, precision chip

resistor (0603)

IRC PCF-W0603R-01-4992-D or

Vishay D11P10049920.5PN

R13 1

4.99kΩ ±0.5%, precision chip

resistor (0603)

IRC PCF-W0603R-02-4991-D or

Vishay D11P10049910.5PN

R14 0

Not installed, shorted by PC trace

(0603)

PART TEMP RANGE PIN PACKAGE

MAX4206EVKIT 0°C to +70°C

16 Thin QFN-EP*

(4mm x 4mm)

*EP = Exposed paddle.

Note: To evaluate the MAX4207, order a MAX4207ETE free

sample with the MAX4206EVKIT.

Summary of content (6 pages)

PAGE 1
9-3397; Rev 0; 8/04 MAX4206 Evaluation Kit Features ♦ +2.7V to +11V Single-Supply Operation or ±2.7V to ±5.5V Dual-Supply Operation ♦ Selectable 10nA/100nA/1µA/10µA On-Board Reference Current ♦ Adjustable Output Scale Factor ♦ Surface-Mount Construction ♦ Fully Assembled and Tested The MAX4206 EV kit can be used to evaluate the MAX4207 by changing the IC and the input RC networks R1, R2, C7, and C8.
PAGE 2
Evaluates: MAX4206/MAX4207 MAX4206 Evaluation Kit Component List (continued) DESIGNATION QTY U1 1 MAX4206ETE (16-pin TQFN 4mm x 4mm) J1, J2 0 Not installed, edge-mount SMA connectors JU1, JU6, JU9, JU10, JU11 5 DESCRIPTION 2-pin headers DESIGNATION QTY DESCRIPTION JU2, JU5, JU7, JU8 4 3-pin headers JU3 1 5-pin header JU4 1 4-pin header None 11 Shunts None 1 MAX4206/7 PC board Component Suppliers SUPPLIER PHONE FAX WEBSITE IRC 361-992-7900 361-992-3377 www.irctt.
PAGE 3
MAX4206 Evaluation Kit SCALE FACTOR (V/decade) 0.25 0.50 JU2 SHUNT POSITION JU4 SHUNT POSITION JU5 SHUNT POSITION JU6 SHUNT POSITION JU7 SHUNT POSITION Not installed Pins 1 and 2 Pins 2 and 3 Installed Pins 1 and 2 Not installed Pins 1 and 3 Pins 2 and 3 Installed Pins 1 and 2 Not installed Pins 1 and 2 Pins 1 and 2 Installed Pins 1 and 2 0.75 Not installed Pins 1 and 3 Pins 1 and 2 Installed Pins 1 and 2 1.
PAGE 4
Evaluates: MAX4206/MAX4207 MAX4206 Evaluation Kit Evaluating the MAX4207 (Dual-Supply Operation) 1) Verify that there is no shunt across jumpers JU1, JU9, and JU10 (dual-supply operation). 2) Verify that there is a shunt across JU11 (sets CMVIN = CMVOUT). 3) Verify that shunts are connected across jumpers JU2 (pins 2 and 3), JU4 (pins 1 and 4), JU5 (pins 1 and 2), and JU7 (pins 2 and 3); and JU6 is open (sets output scale factor K = 1V/decade).
PAGE 5
MAX4206 Evaluation Kit Evaluates: MAX4206/MAX4207 GND VCC VEE JU1 VBIAS1 LOGIIN JU9 D1 PHOTODIODE OPEN SMA C3 0.1µF 25V C4 0.1µF 25V 10 VCC 3 OSADJ 3 R14 (PC TRACE) SHORT GND 4 VEE LOGV1 LOGIIN 1 5 JU7 C7 100pF 1 1 2 GND C2 10µF 6.3V LOGV1 1 15 J1 C1 10µF 16V R1 100Ω 1% U1 9 R6 10kΩ 0.1% N.C. SCALE 7 16 C5 0.1µF CMVIN LOGV2 4 JU4 1 8 2 1 3 JU8 14 C8 100pF 3 OSADJ OSADJ 3 2 6 OSADJ 2 1 R8 10kΩ 0.1% R9 10kΩ 0.
PAGE 6
Evaluates: MAX4206/MAX4207 MAX4206 Evaluation Kit Figure 2. MAX4206 EV Kit Component Placement Guide— Component Side Figure 3. MAX4206 EV Kit PC Board Layout—Component Side Figure 4. MAX4206 EV Kit PC Board Layout—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.