Datasheet

26
LTC1418
APPLICATIONS INFORMATION
WUU
U
PACKAGE DESCRIPTION
U
Dimensions in inches (millimeters) unless otherwise noted.
G28 SSOP 0694
0.005 – 0.009
(0.13 – 0.22)
0° – 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)
1234
5
6
7
8 9 10 11 12 1413
0.397 – 0.407*
(10.07 – 10.33)

2526 22 21 20 19 18
17
16 1523242728
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.