LTC1418IG datasheet(26/28 Pages) LINER

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LTC1418

APPLICATIONS INFORMATION

PACKAGE DESCRIPTION Dimensions in inches (millimeters) unless otherwise noted.

G28 SSOP 0694

0.005 – 0.009

(0.13 – 0.22)

° – 8°

0.022 – 0.037

(0.55 – 0.95)

0.205 – 0.212**

(5.20 – 5.38)

0.301 – 0.311

(7.65 – 7.90)

12 3

6 7 8

9 10 11 12

0.397 – 0.407*

(10.07 – 10.33)

22 21 20 19 18 17 16 15

0.068 – 0.078

(1.73 – 1.99)

0.002 – 0.008

(0.05 – 0.21)

0.0256

(0.65)

BSC

0.010 – 0.015

(0.25 – 0.38)

DIMENSIONS DO NOT INCLUDE MOLD FLASH. MOLD FLASH

SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE

DIMENSIONS DO NOT INCLUDE INTERLEAD FLASH. INTERLEAD

FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE

G Package

28-Lead Plastic SSOP (0.209)

(LTC DWG # 05-08-1640)

allows the user to synchronize the A/D conversion to an

external clock either to have precise control of the internal

bit test timing or to provide a precise conversion time. As in

Figure 24, this mode works when the SCLK frequency is

very low (less than 30kHz). However, the external conver-

sion clock must be between 30kHz and 4.5MHz to maintain

accuracy. If more than 16 SCLKs are provided, more zeros

will be filled in after the data word indefinitely. To select the

external conversion clock tie EXT/INT high. The external

SCLK is applied to SCLK. RD can be used to gate the external

SCLK such that data will clock only after RD goes low.

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