LTC2492 Linear Technology, LTC2492 Datasheet - Page 25

• Manufacturer Part Number: LTC2492
• Description: 24-Bit 2-/4-Channel ADC
• Manufacturer: Linear Technology

www.DataSheet4U.com
APPLICATIONS INFORMATION
(INTERNAL)
(INTERNAL)
SDO
SCK
SDI
CS
CONVERSION
SDO
SCK
SDI
CS
Figure 10. Internal Serial Clock, Reduced Data Output Length with Valid Channel and Confi guration Selection
CONVERSION
DON'T CARE
DON'T CARE
SLEEP
<t
EOCTEST
BIT 31
EOC
1
1
BIT 31
1
EOC
BIT 30
1
“0”
0
2
Figure 11. Internal Serial Clock, Continuous Operation
BIT 30
0.1μF
10μF
“0”
BIT 29
0
SIG
2
EN
3
2.7V TO 5.5V
BIT 29
SIG
BIT 28 BIT 27 BIT 26 BIT 25 BIT 24 BIT 23 BIT 22 BIT 21
EN
MSB
0.1μF
SGL
10μF
3
4
0.1V TO V
REFERENCE
2.7V TO 5.5V
ANALOG
INPUTS
VOLTAGE
BIT 28 BIT 27 BIT 26 BIT 25 BIT 24 BIT 23 BIT 22 BIT 21
MSB
SGL
ODD
4
5
0.1V TO V
CC
REFERENCE
ANALOG
INPUTS
VOLTAGE
ODD
5
A2
12
13
14
10
11
6
8
9
7
CC
V
REF
REF
CH0
CH1
CH2
CH3
COM
CC
A2
LTC2492
6
+
–
A1
7
12
13
14
10
11
8
9
7
V
REF
REF
CH0
CH1
CH2
CH3
COM
SDO
GND
A1
SCK
DATA INPUT/OUTPUT
CC
SDI
7
CS
A0
F
LTC2492
8
DATA INPUT/OUTPUT
O
+
–
5
6
2
3
1
4
A0
EN2
GND
8
SDO
SCK
SDI
9
CS
F
O
5
6
EN2
2
3
1
4
9
3-WIRE
SPI INTERFACE
IM
10
= EXTERNAL OSCILLATOR
= INTERNAL OSCILLATOR
IM
10
FA
4-WIRE
SPI INTERFACE
11
= EXTERNAL OSCILLATOR
= INTERNAL OSCILLATOR
BIT 20 BIT 19
FA
11
FB
12
V
CC
BIT 20 BIT 19
OPTIONAL
10k
FB
SPD
12
13
V
CC
SPD
OPTIONAL
10k
BIT 18 BIT 17
13
14
DON'T CARE
BIT 18
14
BIT17 BIT 19 BIT 19
15
DON'T CARE
16
BIT 0
LTC2492
32
CONVERSION
CONVERSION
Hi-Z
2492 F11
25
2492 F10
2492fb