參數(shù)資料
型號(hào)： 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(jiǎn)易輸入電流驅(qū)動(dòng)取消
文件頁數(shù)： 2/36頁
文件大小： 596K
代理商： 2486
LTC2486
2
2486f
PACKAGE/ORDER INFORMATION
ELECTRICAL CHARACTERISTICS (NORMAL SPEED)
apply over the full operating temperature range, otherwise specifications are at T
A
= 25°C. (Notes 3, 4)
PARAMETER
CONDITIONS
Resolution (No Missing Codes)
0.1V ≤ V
REF
≤ V
CC
, –FS ≤ V
IN
≤ +FS (Note 5)
Integral Nonlinearity
5V ≤ V
CC
≤ 5.5V, V
REF
= 5V, V
IN(CM)
= 2.5V (Note 6)
2.7V ≤ V
CC
≤ 5.5V, V
REF
= 2.5V, V
IN(CM)
= 1.25V (Note 6)
Offset Error
2.5V ≤ V
REF
≤ V
CC
, GND ≤ IN
+
= IN
–
≤ V
CC
(Note 14)
Offset Error Drift
2.5V ≤ V
REF
≤ V
CC
, GND ≤ IN
+
= IN
–
≤ V
CC
Positive Full-Scale Error
2.5V ≤ V
REF
≤ V
CC
, IN
+
= 0.75V
REF
, IN
–
= 0.25V
REF
Positive Full-Scale Error Drift
2.5V ≤ V
REF
≤ V
CC
, IN
+
= 0.75V
REF
, IN
–
= 0.25V
REF
Negative Full-Scale Error
2.5V ≤ V
REF
≤ V
CC
, IN
+
= 0.25V
REF
, IN
–
= 0.75V
REF
Negative Full-Scale Error Drift
2.5V ≤ V
REF
≤ V
CC
, IN
+
= 0.25V
REF
, IN
–
= 0.75V
REF
Total Unadjusted Error
5V ≤ V
CC
≤ 5.5V, V
REF
= 2.5V, V
IN(CM)
= 1.25V
5V ≤ V
CC
≤ 5.5V, V
REF
= 5V, V
IN(CM)
= 2.5V
2.7V ≤ V
CC
≤ 5.5V, V
REF
= 2.5V, V
IN(CM)
= 1.25V
Output Noise
5.5V < V
CC
< 2.7V, 2.5V ≤ V
REF
≤ V
CC
,
GND ≤ IN
+
= IN
–
≤ V
CC
(Note 13)
Internal PTAT Signal
T
A
= 27°C (Note 14)
Internal PTAT Temperature Coefficient
Programmable Gain
ABSOLUTE MAXIMUM RATINGS
(Notes 1, 2)
Supply Voltage (V
CC
) ................................... –0.3V to 6V
Analog Input Voltage
(CH0 to CH3, COM) ..................–0.3V to (V
CC
+ 0.3V)
REF
+
, REF
–
...............................–0.3V to (V
CC
+ 0.3V)
Digital Input Voltage .....................–0.3V to (V
CC
+ 0.3V)
Digital Output Voltage ...................–0.3V to (V
CC
+ 0.3V)
Operating Temperature Range
LTC2486C ................................................0°C to 70°C
LTC2486I .............................................–40°C to 85°C
Storage Temperature Range ..................–65°C to 150°C
1
2
3
4
5
6
7
14
13
12
11
10
9
8
REF
–
REF
+
V
CC
CH3
CH2
CH1
CH0
F
O
SDI
SCK
CS
SDO
GND
COM
DE PACKAGE
14-LEAD (4mm
×
3mm) PLASTIC DFN
T
= 125°C,
θ
= 37°C/W
EXPOSED PAD (PIN 15) IS GND, MUST BE SOLDERED TO PCB
15
ORDER PART NUMBER
LTC2486CDE
LTC2486IDE
DE PART MARKING*
2486
2486
Order Options
Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking:
http://www.linear.com/leadfree/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
*The temperature grade is identified by a label on the shipping container.
The
●
denotes the specifications which
MIN
16
TYP
MAX
UNITS
Bits
●
2
1
20
ppm of V
REF
ppm of V
REF
●
0.5
10
5
μV
nV/°C
●
32
ppm of V
REF
ppm of V
REF
/°C
ppm of V
REF
ppm of V
REF
/°C
ppm of V
REF
ppm of V
REF
ppm of V
REF
0.1
●
32
0.1
15
15
15
0.6
μV
RMS
27.8
28.0
93.5
28.2
mV
μV/°C
●
1
256
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