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): 15/40頁
文件大?。?/td> 605K
代理商: LTC2415IGN
LTC2415/LTC2415-1
15
sn2415 24151fs
Table 2. LTC2415/LTC2415-1 Output Data Format
Differential Input Voltage
V
IN
*
V
IN
*
0.5 V
REF
**
0.5 V
REF
** – 1LSB
0.25 V
REF
**
0.25 V
REF
** – 1LSB
0
–1LSB
Bit 31
EOC
0
0
Bit 30
DMY
0
0
Bit 29
SIG
1
1
Bit 28
MSB
1
0
Bit 27
Bit 26
Bit 25
Bit 0
0
1
0
1
0
1
0
1
0
0
0
0
1
1
0
0
1
0
0
1
0
1
0
1
0
0
0
0
1
0
0
1
0
1
0
1
0
1
0
1
–0.25 V
REF
**
–0.25 V
REF
** – 1LSB
–0.5 V
REF
**
V
IN
* < –0.5 V
REF
**
*The differential input voltage V
IN
= IN
+
– IN
.
0
0
0
0
0
0
1
1
1
0
0
1
0
1
0
1
0
0
0
0
0
0
1
0
0
1
0
1
0
1
0
1
**The differential reference voltage V
REF
= REF
+
– REF
.
Figure 3. Output Data Timing
APPLICATIU
While the variation in offset with supply voltage is propor-
tional to V
CC
(see Figure 4), several characteristics of this
variation can be used to eliminate the effects. First, the
variation with respect to supply voltage is linear. Second,
the magnitude of the offset error decreases with de-
creased supply voltage. Third, the offset error increases
W
U
U
MSB
SIG
“0”
1
2
3
4
5
26
27
32
BIT 0
BIT 27
BIT 5
LSB
24
BIT 28
BIT 29
BIT 30
SDO
SCK
CS
EOC
BIT 31
SLEEP
DATA OUTPUT
CONVERSION
2415 F03
Hi-Z
V
CC
(V)
2.5
O
50
0
–50
–100
–150
–200
–250
3.0
3.5
4.0
4.5
2415 F04
5.0
5.5
V
REF
= 2.5V
T
A
= 25
°
C
PART NO.1
PART NO.2
PART NO.3
TEMPERATURE (
°
C)
–50
O
R
)
–103.8
–104.0
–104.2
–104.4
–104.6
–25
0
25
50
2415 F05
75
100
V
CC
AND V
REF
(V)
2.7
O
R
)
–103.0
–103.5
–104.0
–104.5
–105.0
–105.5
3.5
4.3
4.7
2415 F06
3.1
3.9
5.1
5.5
V
CC
= 5V
V
REF
= 5V
REF
+
= 5V
REF
= GND
V
IN
= 0V
IN
+
= GND
IN
= GND
F
O
= GND
T
A
=100
°
C
T
A
= –50
°
C
T
A
=25
°
C
Figure 4. Offset vs V
CC
Figure 5. Offset vs Temperature
Figure 6. Offset vs V
CC
(V
REF
= V
CC
)
with increased reference voltage with an equal and oppo-
site magnitude to the supply voltage variation. As a result,
by tying V
CC
to V
REF
, the variation with supply can be
nearly eliminated, see Figure 6. The variation with supply
is less than 2ppm over the entire 2.7V to 5.5V supply
range.
相關PDF資料
PDF描述
LTC2415 2-Channel Differential Input 24-Bit No Latency DS ADC
LTC2424 16-Bit 2.5-V to 3.3-V/3.3-V To 5-V Level Shifting Transceiver With 3-State Outputs 48-SSOP -40 to 85
LTC2424C 16-Bit 2.5-V to 3.3-V/3.3-V To 5-V Level Shifting Transceiver With 3-State Outputs 54-BGA MICROSTAR JUNIOR -40 to 85
LTC2424CG 16-Bit 2.5-V to 3.3-V/3.3-V To 5-V Level Shifting Transceiver With 3-State Outputs 56-BGA MICROSTAR JUNIOR -40 to 85
LTC2424I 16-Bit 2.5-V to 3.3-V/3.3-V To 5-V Level Shifting Transceiver With 3-State Outputs 54-BGA MICROSTAR JUNIOR -40 to 85
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