LTC2494IUHF#PBF Linear Technology, LTC2494IUHF#PBF Datasheet - Page 24

• Manufacturer Part Number: LTC2494IUHF#PBF
• Description: IC ADC 16BIT W/PGA 38-QFN
• Manufacturer: Linear Technology

Specifications of LTC2494IUHF#PBF

• Number Of Bits: 16
• Sampling Rate (per Second): 15
• Data Interface: MICROWIRE™, Serial, SPI™
• Number Of Converters: 1
• Power Dissipation (max): 480µW
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 38-WFQFN, Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

applications inForMation
LTC2494

(EXTERNAL)
SDO
SCK
SDI
CS
CONVERSION
(EXTERNAL)
DON'T CARE
SDO
SCK
SDI
CS
CONVERSION
Figure 7. External Serial Clock, Reduced Output Data Length and Valid Channel Selection
SLEEP
BIT 23
DON'T CARE
1
EOC
1
BIT 22
SLEEP
“0”
0
2
Figure 8. External Serial Clock, 3-Wire Operation (CS = 0)
10µF
BIT 21
SIG
EN
2.7V TO 5.5V
3
10µF
BIT 23
1
EOC
2.7V TO 5.5V
1
BIT 20 BIT 19 BIT 18 BIT 17 BIT 16 BIT 15 BIT 14 BIT 13
MSB
SGL
4
0.1V TO V
0.1µF
REFERENCE
ANALOG
INPUTS
VOLTAGE
BIT 22
“0”
0
2
0.1µF
REFERENCE
0.1V TO V
ODD
ANALOG
5
INPUTS
VOLTAGE
CC
BIT 21
SIG
EN
3
•
•
•
•
•
•
A2
CC
28
29
30
15
16
23
6
8
7
BIT 20 BIT 19 BIT 18 BIT 17 BIT 16
MSB
V
REF
REF
CH0
CH7
CH8
CH15
COM
•
•
•
•
•
•
SGL
CC
28
29
30
15
16
23
•
•
•
•
•
•
DATA INPUT/OUTPUT
4
8
7
LTC2494
+
–
A1
7
V
REF
REF
CH0
CH7
CH8
CH15
COM
DATA INPUT/OUTPUT
CC
•
•
•
•
•
•
ODD
LTC2494
+
–
SDO
GND
5
SCK
SDI
CS
A0
f
8
O
SDO
GND
SCK
1,3,4,5,6,31,32,33,39
SDI
A2
CS
34
38
35
37
36
f
6
O
EN2
9
1,3,4,5,6,31,32,33,39
34
38
35
37
36
A1
7
3-WIRE
SPI INTERFACE
IM
10
= EXTERNAL OSCILLATOR
= INTERNAL OSCILLATOR
4-WIRE
SPI INTERFACE
A0
8
FA
11
= EXTERNAL OSCILLATOR
= INTERNAL OSCILLATOR
BIT 12 BIT 11
BIT 15
FB
12
SPD
13
BIT 10
CONVERSION
GS2
DON'T CARE
Hi-Z
14
BIT 9
GS1
15
GS0
16
SLEEP
BIT 0
24
2494 F07
DON'T CARE
CONVERSION
2494fd
2494 F08