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參數(shù)資料
| 型號(hào)： | LTC2480CDD |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | ADC |
| 英文描述： | 16-Bit ADC with Easy Drive |
| 中文描述： | 1-CH 16-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO10 |
| 封裝： | 3 X 3 MM, PLASTIC, MO-229WEED-2, DFN-10 |
| 文件頁(yè)數(shù)： | 10/40頁(yè) |
| 文件大?。?/td> | 535K |
| 代理商： | LTC2480CDD |
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10
LTC2480
2480f
SDI (Pin 1):
Serial Data Input. This pin is used to select the
GAIN, line frequency rejection, input, temperature sensor
and 2x speed mode. Data is shifted into the SDI pin on the
rising edge of serial clock (SCK).
V
CC
(Pin 2):
Positive Supply Voltage. Bypass to GND
(Pin 8) with a 1
μ
F tantalum capacitor in parallel with 0.1
μ
F
ceramic capacitor as close to the part as possible.
V
REF
(Pin 3):
Positive Reference Input. The voltage on this
pin can have any value between 0.1V and V
CC
. The negative
reference input is GND (Pin 8).
TYPICAL PERFOR U
Offset Error vs V
CC
(2x Speed Mode)
V
CC
(V)
2
2.5
0
O
μ
V
100
250
3
4
4.5
2480 G41
50
200
150
3.5
5
5.5
V
REF
= 2.5V
V
IN
= 0V
V
IN(CM)
= GND
F
O
= GND
T
A
= 25
°
C
Offset Error vs V
REF
(2x Speed Mode)
V
REF
(V)
0
O
μ
V
190
200
210
3
5
2480 G42
180
170
160
1
2
4
220
230
240
V
CC
= 5V
V
IN
= 0V
V
IN(CM)
= GND
F
O
= GND
T
A
= 25
°
C
PSRR vs Frequency at V
CC
(2x Speed Mode)
FREQUENCY AT V
CC
(Hz)
1
0
–20
–40
–60
–80
–100
–120
–140
1k
100k
2480 G43
10
100
10k
1M
R
V
= 4.1V DC
REF
+
= 2.5V
REF
–
= GND
IN
+
= GND
IN
–
= GND
F
O
= GND
T
A
= 25
°
C
PSRR vs Frequency at V
CC
(2x Speed Mode)
FREQUENCY AT V
CC
(Hz)
0
–140
R
–120
–80
–60
–40
0
20
100
140
2480 G44
–100
–20
80
180
220
200
40 60
120
160
V
= 4.1V DC
±
1.4V
REF
+
= 2.5V
REF
–
= GND
IN
+
= GND
IN
–
= GND
F
O
= GND
T
A
= 25
°
C
PSRR vs Frequency at V
CC
(2x Speed Mode)
FREQUENCY AT V
CC
(Hz)
30600
–60
–40
0
30750
2480 G45
–80
–100
30650
30700
30800
–120
–140
–20
R
V
= 4.1V DC
±
0.7V
REF
+
= 2.5V
REF
–
= GND
IN
+
= GND
IN
–
= GND
F
O
= GND
T
A
= 25
°
C
PIU
IN
+
(Pin 4), IN
–
(Pin 5):
Differential Analog Inputs. The
voltage on these pins can have any value between GND –
0.3V and V
CC
+ 0.3V. Within these limits the converter
bipolar input range (V
IN
= IN
+
– IN
–
) extends from –0.5
V
REF
/GAIN to 0.5 V
REF
/GAIN. Outside this input range the
converter produces unique overrange and underrange
output codes.
CS (Pin 6):
Active LOW Chip Select. A LOW on this pin
enables the digital input/output and wakes up the ADC.
Following each conversion the ADC automatically enters
the Sleep mode and remains in this low power state as long
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