16-Bit Latchup Protected Analog to Digital Converter
7809LP
TABLE 14. 7809LP CONVERSION AND DATA TIMING
(T = -40 °C TO 85 °C UNLESS OTHERWISE SPECIFIED)
A
SYMBOL
DESCRIPTION
SUBGROUPS
MIN
TYP
MAX
UNIT
t13
t14
t15
t16
t17
t18
t19
t20
External DATACLK HIGH
External DATACLK LOW
DATACLK HIGH Setup Time
R/C to CS Setup Time
9, 10, 11
9, 10, 11
9, 10, 11
9, 10, 11
9, 10, 11
9, 10, 11
9, 10, 11
9, 10, 11
20
30
20
10
15
25
25
6
--
--
--
--
--
--
--
--
--
--
ns
ns
t12 + 5
ns
ns
ns
ns
ns
µs
--
35
55
--
SYNC Delay After DATACLK High
Data Valid Delay
CS to Rising Edge Delay
Data Available after CS LOW
--
TABLE 15. 7809LP CONVERSION DATA TIMING
DIGITAL OUTPUT
BINARY TWO’S
COMPLEMENT (SB/BTC
LOW)
STRAIGHT BINARY
(SB/BTC HIGH)
DESCRIPTION
ANALOG INPUT
HEX
BINARY CODE
CODE
HEX
CODE
BINARY CODE
Full Scale
Range
±10
±5
±3.33V 0V to 0V to 5V 0V to 4V
10V
Least Signifi- 305 µV 153 µV 102 µV 153 µV 76 µV 61 µV
cant Bit (LSB)
+ Full Scale
(FS - 1 LSB)
9.99969 4.99984 3.33323 9.99984 4.99992 3.99993 0111 1111
7FFF
1111 1111
1111 1111
FFFF
5V
7V
1V
7V
4V
8V
1111 1111
Midscale
0V
0V
0V
5V
2.5V
2V
0000 0000 0000 1000 0000 8000
0000 0000
0000 0000
One LSB
Below Mid-
scale
-305 µV -153 µV -102 µV 4.99984 2.49992 1.99993 1111 1111
FFFF
0111 1111
1111 1111
7FFF
7V
0V
4V
0V
9V
0V
1111 1111
-Full Scale
-10V
-5V
3.33333
3V
1000 0000 8000 0000 0000 0000
0000 0000 0000 0000
01.11.05 Rev 7
All data sheets are subject to change without notice
9
©2005 Maxwell Technologies
All rights reserved.
MAXWELL [ MAXWELL TECHNOLOGIES ]
