Datasheet

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DEVICE INFORMATION
V
DIG
V
ANA
BUSY
CS
R/C
BYTE
D0 (LSB)
D1
D2
D3
D4
D5
D6
D7
V
IN
AGND1
REF
CAP
AGND2
D15 (MSB)
D14
D13
D12
D11
D10
D9
D8
DGND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
ADS8505
SLAS180B – SEPTEMBER 2005 – REVISED JUNE 2007
ELECTRICAL CHARACTERISTICS (continued)
T
A
= –40 ° C to 85 ° C, f
s
= 250 kHz, V
DIG
= V
ANA
= 5 V, using internal reference (unless otherwise noted)
ADS8505I ADS8505IB
PARAMETER TEST CONDITIONS UNIT
MIN TYP MAX MIN TYP MAX
DIGITAL TIMING
Bus access timing 83 83 ns
Bus relinquish timing 83 83 ns
POWER SUPPLIES
V
DIG
Digital input voltage 4.75 5 5.25 4.75 5 5.25 V
V
ANA
Analog input voltage 4.75 5 5.25 4.75 5 5.25 V
Must be ≤ V
ANA
I
DIG
Digital input current 2 5 2 5 mA
I
ANA
Analog input current 12 15 12 15 mA
Power dissipation f
S
= 250 kHz 70 100 70 100 mW
TEMPERATURE RANGE
Specified performance –40 85 –40 85 ° C
Derated performance
(8)
–55 125 –55 125 ° C
Storage –65 150 –65 150 ° C
THERMAL RESISTANCE ( Θ
JA
)
SSOP 62 62 ° C/W
SO 46 46 ° C/W
(8) The internal reference may not be started correctly beyond the industrial temperature range (–40 ° C to 85 ° C), therefore use of an
external reference is recommended.
DB OR DW PACKAGE
(TOP VIEW)
4
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