LTC2498IUHF#PBF Linear Technology, LTC2498IUHF#PBF Datasheet - Page 26

• Manufacturer Part Number: LTC2498IUHF#PBF
• Description: IC ADC 24BIT 16CH 38-QFN
• Manufacturer: Linear Technology

Specifications of LTC2498IUHF#PBF

• Number Of Bits: 24
• Sampling Rate (per Second): 7.5
• 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
• Number Of Elements: 1
• Resolution: 24Bit
• Architecture: Delta-Sigma
• Sample Rate: 0.008KSPS
• Input Polarity: Bipolar
• Input Type: Voltage
• Rated Input Volt: ±2.75V
• Differential Input: Yes
• Power Supply Requirement: Single
• Single Supply Voltage (typ): 3.3/5V
• Single Supply Voltage (min): 2.7V
• Single Supply Voltage (max): 5.5V
• Dual Supply Voltage (typ): Not RequiredV
• Dual Supply Voltage (min): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Integral Nonlinearity Error: 10ppm of Vref
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 38
• Package Type: QFN EP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

applications inForMation
LTC2498

(INTERNAL)
(INTERNAL)
SDO
SCK
SDI
CS
CONVERSION
SDO
Figure 10. Internal Serial Clock, Reduced Data Output Length with Valid Channel and Configuration Selection
SCK
SDI
CS
CONVERSION
DON'T CARE
DON'T CARE
SLEEP
<t
EOCTEST
BIT 31
EOC
1
1
BIT 31
1
EOC
1
BIT 30
“0”
Figure 11. Internal Serial Clock, Continuous Operation
0
2
BIT 30
“0”
0
2
BIT 29
10µF
10µF
SIG
EN
2.7V TO 5.5V
2.7V TO 5.5V
3
BIT 29
SIG
EN
3
BIT 28 BIT 27 BIT 26 BIT 25 BIT 24 BIT 23 BIT 22 BIT 21
MSB
SGL
REFERENCE
0.1V TO V
0.1µF
4
0.1V TO V
REFERENCE
BIT 28 BIT 27 BIT 26 BIT 25 BIT 24 BIT 23 BIT 22 BIT 21
ANALOG
0.1µF
MSB
INPUTS
SGL
ANALOG
VOLTAGE
INPUTS
VOLTAGE
4
ODD
5
CC
CC
ODD
5
•
•
•
•
•
•
•
•
•
•
•
•
28
29
30
15
16
23
A2
28
29
30
15
16
23
8
7
8
7
6
V
REF
REF
CH0
CH7
CH8
CH15
COM
A2
V
REF
REF
CH0
CH7
CH8
CH15
COM
CC
6
•
•
•
•
•
•
CC
•
•
•
•
•
•
LTC2498
+
–
LTC2498
+
–
A1
7
A1
7
SDO
GND
SCK
GND
SDI
SDO
DATA INPUT/OUTPUT
SCK
DATA INPUT/OUTPUT
CS
SDI
f
CS
A0
O
f
8
O
1,3,4,5,6,31,32,33,39
A0
1,3,4,5,6,31,32,33,39
8
38
35
34
37
36
34
38
35
37
36
EN2
9
EN2
9
4-WIRE
SPI INTERFACE
3-WIRE
SPI INTERFACE
IM
10
IM
= EXTERNAL OSCILLATOR
= INTERNAL OSCILLATOR
= EXTERNAL OSCILLATOR
= INTERNAL OSCILLATOR
10
FA
11
FA
11
BIT 20 BIT 19
FB
V
12
V
BIT 20 BIT 19
CC
CC
FB
OPTIONAL
10k
12
OPTIONAL
10k
SPD
13
SPD
13
BIT 18 BIT 17
14
BIT 18 BIT 17
DON'T CARE
16
DON'T CARE
CONVERSION
Hi-Z
BIT 0
32
2498 F10
CONVERSION
2498 F11
2498fe