LTC2420IS8 Linear Technology, LTC2420IS8 Datasheet - Page 28

• Manufacturer Part Number: LTC2420IS8
• Description: IC ADC 20BIT MICROPOWER 8SOIC
• Manufacturer: Linear Technology

Specifications of LTC2420IS8

• Number Of Bits: 20
• Sampling Rate (per Second): 7.5
• Data Interface: MICROWIRE™, Serial, SPI™
• Number Of Converters: 2
• Power Dissipation (max): 1mW
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

APPLICATIO S I FOR ATIO
LTC2420
28
–0.05
–0.10
–0.15
–0.20
–0.05
–0.10
–0.15
–0.20
34a. Digitized Waveform with 2V DC Offset
0.20
0.15
0.10
0.05
2.20
2.15
2.10
2.05
2.00
1.95
1.90
1.85
1.80
0.20
0.15
0.10
0.05
0.00
34c. Digitized Waveform with No Offset
0
V
V
IN
IN
= 300mV
= 300mV
500ms
33a. Digitized Waveform
U
P-P
P-P
Figure 34. Using the LTC2420’s High Accuracy Wide Dynamic Range to Digitize
a 300mV
+ 2V DC
+ 0V DC
U
TIME
TIME
TIME
P-P
15Hz Waveform with a Large DC Offset (V
W
f
IN
2420 F34a
2420 F33a
2420 F34c
= 2Hz
Figure 33. Transient Signal Acquisiton
U
–100
–120
–100
–100
–20
–40
–80
–120
–120
–60
CC
–20
–40
–80
–20
–40
–80
–60
–60
0
34b. FFT Waveform with 2V DC Offset
0
0
= 5V, V
34d. FFT Waveform with No Offset
REF
33b. Output FFT
= 5V)
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
2Hz
100sps
0V OFFSET
15Hz
100sps
2V OFFSET
15Hz
100sps
0V OFFSET
2420 F33b
2420 F34b
2420 F34d