參數(shù)資料
型號(hào): LTC1290BCSW
廠商: LINEAR TECHNOLOGY CORP
元件分類: ADC
英文描述: Single Chip 12-Bit Data Acquisition System
中文描述: 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
封裝: 0.300 INCH, PLASTIC, SOP-20
文件頁數(shù): 6/28頁
文件大小: 381K
代理商: LTC1290BCSW
6
LTC 1290
C
HARA TERISTICS
U
A
TYPICAL PERFOR
CE
Sample-and-Hold Acquisition
Time vs Source Resistance
R
SOURCE
+ (
)
100
1
S
μ
s
10
100
1k
10k
LTC1290 TPC11
+
V
IN
R
SOURCE
+
V
REF
= 5V
V
CC
= 5V
T
A
= 25
°
C
0V TO 5V INPUT STEP
ACLK FREQUENCY (MHz)
0
S
C
μ
A
1.00
2.00
3.00
4.00
1290 TPC13
200
180
160
140
120
100
80
60
40
20
V
= 5V
CMOS LEVELS
Supply Current (Power Shutdown)
vs ACLK
Supply Current (Power Shutdown)
vs Temperature
AMBIENT TEMPERATURE, T
A
(
°
C)
–50
S
C
μ
A
10
9
8
7
6
5
4
3
2
1
0
–10
30
50
130
1290 TPC12
–30
10
70
90 110
ACLK OFF DURING
POWER SHUTDOWN
Input Channel Leakage Current
vs Temperature
AMBIENT TEMPERATURE, T
A
(
°
C)
–50
0
I
100
300
400
500
1000
700
–10
30
50
130
1290 TPC14
200
800
900
600
–30
10
70
90 110
ON CHANNEL
OFF CHANNEL
GUARANTEED
Noise Error vs Reference Voltage
REFERENCE VOLTAGE, V
REF
(V)
0
0
P
0.25
0.75
1.00
1.25
2
4
5
2.25
1290 TPC15
0.50
1
3
1.50
1.75
2.00
LTC1290 NOISE 200
μ
V
P-P
PI FU CTIO S
CH0 to CH7 (Pin 1 to Pin 8):
Analog Inputs. The analog
inputs must be free of noise with respect to AGND.
COM (Pin 9):
Common. The common pin defines the zero
reference point for all single-ended inputs. It must be free
of noise and is usually tied to the analog ground plane.
DGND (Pin 10):
Digital Ground. This is the ground for the
internal logic. Tie to the ground plane.
AGND (Pin 11):
Analog Ground. AGND should be tied
directly to the analog ground plane.
V
(Pin 12):
Negative Supply. Tie V
to most negative
potential in the circuit. (Ground in single supply applica-
tions.)
REF
, REF
+
(Pins 13, 14):
Reference Inputs. The refer-
ence inputs must be kept free of noise with respect to
AGND.
CS (Pin 15):
Chip Select Input. A logic low on this input
enables data transfer.
D
OUT
(Pin 16):
Digital Data Output. The A/D conversion
result is shifted out of this output.
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LTC1290BI Single Chip 12-Bit Data Acquisition System
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