Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

HI7106 Datasheet(PDF) 6 Page - Intersil Corporation

Part No. HI7106
Description  3 1/2 Digit, LCD/LED Display, A/D Converter
Download  11 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  INTERSIL [Intersil Corporation]
Homepage  http://www.intersil.com/cda/home
Logo 

HI7106 Datasheet(HTML) 6 Page - Intersil Corporation

Zoom Inzoom in Zoom Outzoom out
 6 / 11 page
background image
6
or any other presentation the user may want to include on
the LCD display. Figures 4 and 5 show such an application.
No more than a 1mA load should be applied.
The second function is a “lamp test”. When TEST is pulled
high (to V+) all segments will be turned on and the display
should read “1888”. The TEST pin will sink about 15mA
under these conditions.
CAUTION: In the lamp test mode, the segments have a constant DC
voltage (no square-wave). This may burn the LCD display if main-
tained for extended periods.
Digital Section
Figures 6 shows the digital section for the HI7106. In the
HI7106, an internal digital ground is generated from a 6V
Zener diode and a large P-Channel source follower.
This supply is made stiff to absorb the relative large
capacitive currents when the back plane (BP) voltage is
switched. The BP frequency is the clock frequency divided
by 800. For three readings/sec., this is a 60Hz square wave
with a nominal amplitude of 5V. The segments are driven at
the same frequency and amplitude and are in phase with BP
when OFF, but out of phase when ON. In all cases negligible
DC voltage exists across the segments.
The polarity indication is “on” for negative analog inputs. If
IN LO and IN HI are reversed, this indication can be
reversed also, if desired.
HI7106
V+
BP
TEST
21
37
TO LCD
BACKPLANE
TO LCD
DECIMAL
POINT
1M
FIGURE 4. SIMPLE INVERTER FOR FIXED DECIMAL POINT
HI7106
V+
BP
TEST
DECIMAL
POINT
SELECT
CD4030
GND
V+
TO LCD
DECIMAL
POINTS
FIGURE 5. EXCLUSIVE ‘OR’ GATE FOR DECIMAL POINT DRIVE
HI7106


Html Pages

1  2  3  4  5  6  7  8  9  10  11 


Datasheet Download




Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   Link Exchange   |   Manufacturer List
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