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ADD8504WRUZ-REEL7 View Datasheet(PDF) - Analog Devices

Part Name
Description
Manufacturer
ADD8504WRUZ-REEL7 Datasheet PDF : 8 Pages
1 2 3 4 5 6 7 8
ADD8504/ADD8505/ADD8506
APPLICATIONS
The ADD8504/ADD8505/ADD8506 have CMOS buffers with
A/B inputs to select between two different reference voltages set
up by an external resistor ladder. Input bias currents are orders
of magnitude less than competitive parts. This allows the use of
a very large resistor ladder to save supply current.
The buffer outputs are designed to drive resistive or capacitive
loads. Therefore, to attain the best display performance, do not
use resistors in series with these outputs. Outputs have high
slew rates and 6 μs settling times. Each output delivers a mini-
mum of 120 mA, ensuring a fast response to varying loads.
Power supply pins on the ADD8505 and ADD8506 have
multiple ground (GND) and supply (VCC) connections.
Because of the high peak currents that these buffers deliver, it
is recommended that all GND and VCC pins be connected and
suitably bypassed.
Table 6. MUX Function
A/B Select
Logic High
Logic Low
Input
INAx
INBx
5V
0.1μF
RA1
RB1
1
RA2
2
RB2
3
RA3
4
RB3
5
RA4
6
RB4
7
RA5
8
RB5
9
RA6
10
RB6
101
RA7
12
RB7
5V 0.1μF
VCOM
(INVERTING SIGNAL) 5V
0.1μF
24
TO COLUMN
DRIVERS
23
22
21
20
19
18
17
16
15
14
13
NOTES
1. RAx RESISTORS ARE USED TO SET POSITIVE INVERSION GAMMA VOLTAGES.
2. RBx RESISTORS ARE USED TO SET NEGATIVE INVERSION GAMMA VOLTAGES.
Figure 12. Typical Application
Rev. B | Page 7 of 8
 

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