ADS7809 Burr-Brown Corporation, ADS7809 Datasheet - Page 5

• Manufacturer Part Number: ADS7809
• Description: 16-Bit 10ms Serial CMOS Sampling ANALOG-to-DIGITAL CONVERTER
• Manufacturer: Burr-Brown Corporation

TABLE II. Conversion and Data Timing. T
FIGURE 2. Serial Data Timing Using Internal Clock. (CS, EXT/INT and TAG Tied LOW.)
DATACLK
SYMBOL
SDATA
t
6
BUSY
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
+ t
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
R/C
7
+85 C.
R/C LOW to DATACLK Delay
Data Available after CS LOW
External DATACLK HIGH
External DATACLK LOW
CS to Rising Edge Delay
t
Data Valid to DATACLK
2
DATACLK LOW Delay
R/C to CS Setup Time
Convert Pulse Width
t
1
External DATACLK
End of Conversion
SYNC Delay After
BUSY Delay after
DATACLK Period
Conversion Time
Throughput Time
DATACLK HIGH
DATACLK HIGH
Data Valid Delay
Acquisition Time
Data Valid after
DESCRIPTION
Aperture Delay
BUSY Delay
BUSY LOW
HIGH Delay
Setup Time
t
8
t
10
MSB Valid
1
MIN
100
100
t
40
20
20
30
20
10
15
25
25
9
6
TYP MAX UNITS
220
450
440
125
7.6
40
75
Bit 14 Valid
A
9
= –40 C to
t
11
2
t
6000
12
65
10
35
55
8
8
2
+5
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
s
s
s
s
s
t
Bit 13 Valid
3
3
5
FIGURE 1. Basic Conversion Timing.
CS, R/C
MODE Acquire
BUSY
t
2
Bit 1 Valid
t
1
t
5
15
Convert
t
6
LSB Valid
ADS7809
16
t
3
Acquire
t
7
t
4
®