31

LTC2483

2483f

Information furnished by Linear Technology Corporation is believed to be accurate and reliable.

However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-

tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.

PACKAGE DESCRIPTIO

DD Package

10-Lead Plastic DFN (3mm

× 3mm)

(Reference LTC DWG # 05-08-1698)

3.00

±0.10

(4 SIDES)

NOTE:

1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WEED-2).

CHECK THE LTC WEBSITE DATA SHEET FOR CURRENT STATUS OF VARIATION

ASSIGNMENT

2. DRAWING NOT TO SCALE

3. ALL DIMENSIONS ARE IN MILLIMETERS

4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE

MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SID

5. EXPOSED PAD SHALL BE SOLDER PLATED

6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE

TOP AND BOTTOM OF PACKAGE

0.38

± 0.10

BOTTOM VIEW—EXPOSED PAD

1.65

± 0.10

(2 SIDES)

0.75

±0.05

R = 0.115

TYP

2.38

±0.10

(2 SIDES)

1

5

10

6

PIN 1

TOP MARK

(SEE NOTE 6)

0.200 REF

0.00 – 0.05

(DD10) DFN 1103

0.25

± 0.05

2.38

±0.05

(2 SIDES)

RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS

1.65

±0.05

(2 SIDES)

2.15

±0.05

0.50

BSC

0.675

±0.05

3.50

±0.05

PACKAGE

OUTLINE

0.25

± 0.05

0.50 BSC

// If read_LTC2483() does not return non-zero within this time period, something

// is wrong, such as an incorrect i2c address or bus conflict.

if((x = read_LTC2483(LTC248XADDR)) != 0)

{

// No timeout, everything is okay

timeout = 0;

// reset timer

x ^= 0x80000000;

// Invert MSB, result is 2’s complement

voltage = (float) x;

// convert to float

voltage = voltage * 5.0 / 2147483648.0;// Multiply by Vref, divide by 2^31

lcd_putc(‘\f’);

// Clear screen

lcd_gotoxy(1,1);

// Goto home position

printf(lcd_putc, “V %01.4f”, voltage); // Display voltage

}

else

{

++timeout;

}

if(timeout > 200)

{

timeout = 200;

// Prevent rollover

lcd_gotoxy(1,1);

printf(lcd_putc, “ERROR - TIMEOUT”);

delay_ms(500);

}

} // End of main loop

} // End of main()

APPLICATIO S I FOR ATIO