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參數(shù)資料
| 型號： | LTC1287BCJ8 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | ADC |
| 英文描述： | 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, CDIP8 |
| 封裝： | 0.300 INCH, HERMETIC SEALED, CERAMIC, DIP-8 |
| 文件頁數(shù)： | 12/16頁 |
| 文件大?。?/td> | 315K |
| 代理商： | LTC1287BCJ8 |
LTC1287
5
1287fa
CC
HARA TERISTICS
UW
A
TYPICALPERFOR
CE
RSOURCE– ()
100
0
MAXIMUM
CLK
FREQUENCY*
(MHz)
300
400
500
1k
10k
100k
LTC G10
200
100
VCC = 3V
VREF = 2.5V
CLK = 500kHz
+IN
–IN
+VIN
RSOURCE–
RSOURCE+ ()
100
1k
10k
LTC1287 G13
1
S
&
H
ACQUISITION
TIME
TO
0.02%
(
s)
10
100
+
–
VIN
RSOURCE+
VREF = 2.5V
VCC = 3V
TA = 25°C
0V TO 2.5V INPUT STEP
Sample-and-Hold Acquisition
Time vs Source Resistance
AMBIENT TEMPERATURE (
°C)
–50
0
INPUT
CHANNEL
LEAKAGE
CURRENT
(nA)
100
300
400
500
1000
700
–10
30
50
130
LTC1287 G14
200
800
900
600
–30
10
70
90 110
ON CHANNEL
OFF CHANNEL
GUARANTEED
Input Channel Leakage Current vs
Temperature
REFERENCE VOLTAGE (V)
0
PEAK-TO-PEAK
NOISE
ERROR
(LSB)
0.2
0.3
0.4
0.5
0.6
0.7
0.5
1.0
1.5
2.0
LTC1287 G15
2.5
0.8
0.9
1.0
0.1
3.0
LTC1287 NOISE = 200
VP-P
Noise Error vs Reference Voltage
Maximum Clock Rate vs Source
Resistance
Minimum Clock Rate for 0.1LSB
Error**
Maximum Filter Resistor vs Cycle
Time
*** MAXIMUM RFILTER REPRESENTS THE FILTER RESISTOR VALUE AT WHICH A 0.1LSB
CHANGE IN FULL SCALE ERROR FROM ITS VALUE AT RFILTER = 0 IS FIRST DETECTED.
* MAXIMUM CLK FREQUENCY REPRESENTS THE CLK FREQUENCY AT WHICH A 0.1LSB
SHIFT IN THE ERROR AT ANY CODE TRANSITION FROM ITS 500kHz VALUE IS FIRST DETECTED.
** AS THE CLK FREQUENCY IS DECREASED FROM 1MHz, MINIMUM CLK FREQUENCY
(
ERROR ≤ 0.1LSB) REPRESENTS THE FREQUENCY AT WHICH A 0.1LSB SHIFT IN ANY
CODE TRANSITION FROM ITS 500kHz VALUE IS FIRST DETECTED.
PI FU CTIO S
U
UU
CYCLE TIME (
s)
10
MAXIMUM
R
FILTER
***
(
)
100
1k
10k
10
1000
10000
LTC1287 G12
1
100
+
–
VIN
CFILTER ≥1F
RFILTER
AMBIENT TEMPERATURE (
°C)
–50
MINIMUM
CLK
FREQUENCY
(MHz)
0.05
0.10
0.15
0.20
–25
025
50
LTC1287 G11
75
100
0.25
VCC = 3V
CS (Pin 1): Chip Select Input. A logic low on this input
enables the LTC1287.
+IN, –IN (Pin 2,3): Analog Inputs. These inputs must be
free of noise with respect to GND.
GND (Pin 4): Analog Ground GND should be tied directly
to an analog ground plane.
VREF (Pin 5): Reference Input. The reference input defines
the span of the A/D converter and must be kept free of
noise with respect to GND.
DOUT (Pin 6): Digital Data Output. The A/D conversion
result is shifted out of this output.
CLK (Pin 7): Shift Clock. This clock synchronizes the serial
data transfer.
VCC (Pin 8): Positive Supply. This supply must be kept free
of noise and ripple by bypassing directly to the analog
ground plane.
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| LTC1287CCJ8 | 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, CDIP8 |
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| LTC1287CIJ8 | 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, CDIP8 |
| LTC1287CIN8 | 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDIP8 |
| LTC1287BIN8 | 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDIP8 |
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