參數(shù)資料
型號： LTC2415IGN
廠商： LINEAR TECHNOLOGY CORP
元件分類： ADC
英文描述： 24-Bit No Latency ADCs with Differential Input and Differential Reference
中文描述： 1-CH 24-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO16
封裝： 0.150 INCH, PLASTIC, SSOP-16
文件頁數(shù)： 17/40頁
文件大?。?/td> 605K
代理商： LTC2415IGN
LTC2415/LTC2415-1
17
sn2415 24151fs
APPLICATIU
W
U
U
Table 3a. LTC2415 State Duration
State
Operating Mode
CONVERT
Internal Oscillator
Duration
66.6ms, Output Data Rate
≤
15 Readings/s
80ms, Output Data Rate
≤
12.4 Readings/s
F
O
= LOW, (60Hz Rejection)
F
O
= HIGH, (50Hz Rejection)
F
O
= External Oscillator with Frequency 10278/f
EOSC
s, Output Data Rate
≤
f
EOSC
/10278 Readings/s
f
EOSC
kHz (f
EOSC
/2560 Rejection)
As Long As CS = HIGH Until CS = LOW and SCK
Internal Serial Clock F
O
= LOW/HIGH, (Internal Oscillator)
F
O
= External Oscillator with
Frequency f
EOSC
kHz
External Serial Clock with Frequency f
SCK
kHz
External Oscillator
SLEEP
DATA OUTPUT
As Long As CS = LOW But Not Longer Than 1.67ms (32 SCK cycles)
As Long As CS = LOW But Not Longer Than 256/f
EOSC
ms (32 SCK cycles)
As Long As CS = LOW But Not Longer Than 32/f
SCK
ms (32 SCK cycles)
INPUT FREQUENCY DEVIATION FROM NOTCH FREQUENCY (%)
–12
–8
–4
0
4
8
12
R
2415 F07a
–60
–70
–80
–90
–100
–110
–120
–130
–140
Table 3b. LTC2415-1 State Duration
State
Operating Mode
CONVERT
Internal Oscillator
Duration
72.8ms, Output Data Rate
≤
14 Readings/s
F
O
= LOW
Simultaneous 50Hz/60Hz Rejection
F
O
= External Oscillator with Frequency 10278/f
EOSC
s, Output Data Rate
≤
f
EOSC
/10278 Readings/s
f
EOSC
kHz (f
EOSC
/2560 Rejection)
As Long As CS = HIGH Until CS = LOW and SCK
Internal Serial Clock F
O
= LOW (Internal Oscillator)
F
O
= External Oscillator with
Frequency f
EOSC
kHz
External Serial Clock with Frequency f
SCK
kHz
External Oscillator
SLEEP
DATA OUTPUT
As Long As CS = LOW But Not Longer Than 1.83ms (32 SCK cycles)
As Long As CS = LOW But Not Longer Than 256/f
EOSC
ms (32 SCK cycles)
As Long As CS = LOW But Not Longer Than 32/f
SCK
ms (32 SCK cycles)
Figure 7c. LTC2415/LTC2415-1
Normal Mode Rejection When Using
an External Oscillator of Frequency
f
EOSC
with Running Averages
Figure 7b. LTC2415-1 Normal Mode
Rejection When Using an Internal
Oscillator with Running Averages
48
DIFFERENTIAL INPUT SIGNAL FREQUENCY (Hz)
50
52
54
56
58
60
62
N
2415 F07b
–80
–90
–100
–100
–120
–130
–140
DIFFERENTIAL INPUT SIGNAL FREQUENCY
DEVIATION FROM NOTCH FREQUENCY f
EOSC
/2560(%)
–12
–8
–4
0
4
8
12
N
2415 F07c
–80
–85
–90
–95
–100
–105
–110
–115
–120
–125
–130
–135
–140
Figure 7a. LTC2415/LTC2415-1 Normal Mode
Rejection When Using an External Oscillator
of Frequency f
EOSC
without Running Averages
state and the converter is in the Internal SCK mode, the
serial clock duty cycle may be affected but the serial data
stream will remain valid.
Table 3b summarizes the duration of each state and the
achievable output data rate as a function of F
O
.
Serial Interface Pins
The LTC2415/LTC2415-1 transmit the conversion results
and receive the start of conversion command through a
synchronous 3-wire interface. During the conversion and
sleep states, this interface can be used to assess the
converter status and during the data output state it is used
to read the conversion result.
相關(guān)PDF資料
PDF描述
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