Moteur de recherche de fiches techniques de composants électroniques
  French  ▼
ALLDATASHEET.FR

X  

MAX038CPP Fiches technique(PDF) 2 Page - Maxim Integrated Products

No de pièce MAX038CPP
Description  Evaluation Kit
Download  8 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricant  MAXIM [Maxim Integrated Products]
Site Internet  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX038CPP Fiches technique(HTML) 2 Page - Maxim Integrated Products

  MAX038CPP Datasheet HTML 1Page - Maxim Integrated Products MAX038CPP Datasheet HTML 2Page - Maxim Integrated Products MAX038CPP Datasheet HTML 3Page - Maxim Integrated Products MAX038CPP Datasheet HTML 4Page - Maxim Integrated Products MAX038CPP Datasheet HTML 5Page - Maxim Integrated Products MAX038CPP Datasheet HTML 6Page - Maxim Integrated Products MAX038CPP Datasheet HTML 7Page - Maxim Integrated Products MAX038CPP Datasheet HTML 8Page - Maxim Integrated Products  
Zoom Inzoom in Zoom Outzoom out
 2 / 8 page
background image
JU3 to allow the frequency to be adjusted. Verify
that there is a shunt on JU5.
4) Verify the shunts on JU1 and JU2 for a square-wave
output. Refer to Table 1 for alternate waveform
selections.
5) Apply power and verify the output waveform.
_______________Detailed Description
Waveform Selection
To select the desired output waveform, place shunts
across JU1 and JU2 in the combinations shown in
Table 1. These jumpers set address pins A0 and A1 to
TTL/CMOS-logic levels. External control may be initiat-
ed by connecting an external source to the A0 and
A1 pads and removing the shunts on JU1 and JU2.
Note that there are 10k
Ω pull-up resistors to +5V on the
A0 and A1 address lines.
* Note: Frequency pre-set by oscillator capacitor (C1) and input
current (position of R3) as specified by formula [1].
Output Frequency
The output frequency is controlled by the oscillator
capacitor (C1), the current injected into the IIN pin, and
the voltage on the FADJ pin. The EV kit allows indepen-
dent adjustment of both input current (R3) and FADJ
voltage (R2). Refer to the
Detailed Description section
of the MAX038 data sheet for additional theory of oper-
ation.
Input Current Control
The current injected into the IIN pin acts as the primary
frequency-adjustment control. The R3 potentiometer
varies the current to the MAX038’s IIN pin. The input
current can be easily monitored by removing the JU5
shunt and placing a current meter across the JU5 pins.
The components supplied on the EV kit will allow an
input current range of 50µA to 725µA. With the VADJ
pin grounded, the fundamental output frequency (Fo) is
as follows:
Fo (MHz) = IIN(µA)
÷ COSC (pF)
[1]
where: IIN = current injected into IIN
= VREF
÷ (R3 + R12)
= 2.5V
÷ (0kΩ to 50kΩ + 3.3kΩ)
COSC = external oscillator capacitor (C1)
To use an external input current, connect the external
current source to the IIN pad and remove the JU5 shunt
completely. Note that there is a 3.3k
Ω resistor in series
with the device IIN pin.
FADJ Control
Varying the FADJ voltage will also vary the output fre-
quency. With a shunt across pins 1 and 2 of JU3, the
R2 potentiometer will vary the voltage applied to the
FADJ pin. With the JU3 shunt on pins 2 and 3, the FADJ
pin is grounded. Grounding the FADJ pin sets the out-
put to the fundamental output frequency (Fo), as
given by equation [1].
To use an external FADJ voltage, connect the external
source to the FADJ pad and remove the JU3 shunt
completely. Limit the external FADJ voltage to ±2.4V.
Duty-Cycle Control
The voltage on the DADJ pin controls the duty cycle of
the output waveform. With the JU4 shunt on pins 1 and 2,
the R1 potentiometer will vary the voltage applied to the
DADJ pin, thus varying the duty cycle 15% to 85%. With
the JU4 shunt on pins 2 and 3, the DADJ pin is grounded.
Grounding the DADJ pin fixes the duty cycle at 50%.
To use an external DADJ voltage, connect the external
voltage source to the DADJ pad and remove the JU4
shunt completely. Limit the external DADJ voltage to
±2.3V.
MAX038 Evaluation Kit
2
_______________________________________________________________________________________
Table 1. Waveform Jumper Select
Table 2. Frequency and Duty-Cycle Jumper Select
Fixed 50% Duty Cycle
2 & 3
JU4
Adjustable Duty Cycle
1 & 2
Pre-Set Frequency*
2 & 3
JU3
Adjustable Frequency
1 & 2
MAX038 OUTPUT
SHUNT
LOCATION
JUMPER
Square Wave
Short
Short
Triangle Wave
Short
Open
Sine Wave
Open
Don't Care
OUTPUT WAVEFORM
JU2
JU1


Numéro de pièce similaire - MAX038CPP

FabricantNo de pièceFiches techniqueDescription
logo
Maxim Integrated Produc...
MAX038CPP MAXIM-MAX038CPP Datasheet
203Kb / 16P
   High-Frequency Waveform Generator
19-0266; Rev 2a; 9/96
More results

Description similaire - MAX038CPP

FabricantNo de pièceFiches techniqueDescription
logo
Maxim Integrated Produc...
MAX17681EVKITC MAXIM-MAX17681EVKITC Datasheet
2Mb / 11P
   Evaluation Kit
Rev 0; 2/16
logo
STMicroelectronics
UM0382 STMICROELECTRONICS-UM0382 Datasheet
1Mb / 32P
   Evaluation Kit
January 2007 Rev 2
logo
Maxim Integrated Produc...
MAX2043 MAXIM-MAX2043_1 Datasheet
190Kb / 7P
   Evaluation Kit
Rev 0; 5/06
MAX2170 MAXIM-MAX2170 Datasheet
446Kb / 8P
   Evaluation Kit
Rev 0; 12/06
MAX2396 MAXIM-MAX2396 Datasheet
730Kb / 13P
   Evaluation Kit
Rev 0; 5/03
MAX2410 MAXIM-MAX2410_1 Datasheet
82Kb / 8P
   Evaluation Kit
Rev 1; 3/98
MAX2411A MAXIM-MAX2411A_1 Datasheet
96Kb / 6P
   Evaluation Kit
Rev 1; 2/98
MAX2685 MAXIM-MAX2685_1 Datasheet
162Kb / 6P
   Evaluation Kit
Rev 0; 7/99
MAX3558 MAXIM-MAX3558_1 Datasheet
471Kb / 5P
   Evaluation Kit
Rev 0; 11/03
MAX2649 MAXIM-MAX2649_1 Datasheet
163Kb / 4P
   Evaluation Kit
Rev 0; 9/02
logo
Advantech Co., Ltd.
SOM-DK5992 ADVANTECH-SOM-DK5992 Datasheet
509Kb / 2P
   Evaluation Kit
More results


Html Pages

1 2 3 4 5 6 7 8


Fiches technique Télécharger

Go To PDF Page


Lien URL




Politique de confidentialité
ALLDATASHEET.FR
ALLDATASHEET vous a-t-il été utile ?  [ DONATE ] 

À propos de Alldatasheet   |   Publicité   |   Contactez-nous   |   Politique de confidentialité   |   Echange de liens   |   Fabricants
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com