參數(shù)資料
型號： 2486
廠商： Linear Technology Corporation
英文描述： 16-Bit 2-/4-Channel ツヒ ADC with PGA and Easy Drive Input Current Cancellation
中文描述： 16位2-/4-ChannelツヒADC，帶PGA和簡易輸入電流驅(qū)動取消
文件頁數(shù)： 21/36頁
文件大?。?/td> 596K
代理商： 2486
LTC2486
21
2486f
APPLICATIONS INFORMATION
Figure 4. Internal PTAT Digital Output vs Temperature
Figure 5. Absolute Temperature Error
Table 6. Serial Interface Timing Modes
CONFIGURATION
External SCK, Single Cycle
Conversion
External SCK, 3-Wire I/O
Internal SCK, Single Cycle
Conversion
Internal SCK, 3-Wire I/O,
Continuous Conversion
SCK
SOURCE
External
CONVERSION
CYCLE CONTROL
C
S and SCK
DATA OUTPUT
CONTROL
C
S and SCK
CONNECTION AND
WAVEFORMS
Figures 6, 7
External
Internal
SCK
C
S
↓
SCK
C
S
↓
Figure 8
Figures 9, 10
Internal
Continuous
Internal
Figure 11
TEMPERATURE (K)
0
D
1
60000
80000
100000
120000
140000
400
2486 F04
40000
0
300
200
100
20000
V
CC
= 5V
V
= 5V
SLOPE = 314 LSB
16
/K
TEMPERATURE (
°
C)
–55
–30
–5
A
°
C
5
4
3
2
1
–4
–3
–2
–1
0
120
95
70
45
20
2486 F05
–5
Figure 6. External Serial Clock, Single Cycle Operation
Hi-Z
2486 F06
CS
SCK
(EXTERNAL)
SDI
SDO
CONVERSION
SLEEP
DATA INPUT/OUTPUT
CONVERSION
V
CC
F
O
REF
+
REF
–
CH0
CH1
CH2
CH3
COM
SCK
SDI
CS
SDO
GND
12
1
13
14
8
9
10
11
7
3
4
6
5
2
REFERENCE
VOLTAGE
0.1V TO V
CC
ANALOG
INPUTS
= EXTERNAL OSCILLATOR
= INTERNAL OSCILLATOR
LTC2486
2.7V TO 5.5V
0.1
μ
F
10
μ
F
4-WIRE
SPI INTERFACE
EOC
BIT 20 BIT 19 BIT 18 BIT 17 BIT 16 BIT 15 BIT 14 BIT 13
BIT 12 BIT 11
BIT 21
BIT 22
BIT 23
BIT 10
BIT 9
BIT 0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
24
1
0
EN
SGL
A2
A1
A0
EN2
IM
FA
FB
SPD
GS2
GS1
GS0
ODD
DON'T CARE
DON'T CARE
MSB
SIG
“0”
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