RSOURCE+ ()
參數(shù)資料
型號(hào): LTC1290CIN#PBF
廠商: Linear Technology
文件頁(yè)數(shù): 30/32頁(yè)
文件大?。?/td> 0K
描述: IC DATA ACQ SYS 12BIT 20-DIP
標(biāo)準(zhǔn)包裝: 18
類型: 數(shù)據(jù)采集系統(tǒng)(DAS),ADC
分辨率(位): 12 b
采樣率(每秒): 50k
數(shù)據(jù)接口: 串行,并聯(lián)
電壓電源: 雙 ±
電源電壓: ±5 V,5 V
工作溫度: -40°C ~ 85°C
安裝類型: 通孔
封裝/外殼: 20-DIP(0.300",7.62mm)
供應(yīng)商設(shè)備封裝: 20-PDIP
包裝: 管件
產(chǎn)品目錄頁(yè)面: 1346 (CN2011-ZH PDF)
7
LTC1290
1290fe
Sample-and-Hold Acquisition
Time vs Source Resistance
RSOURCE+ ()
100
1
S
&
H
AQUISITION
TIME
TO
0.02%
(
s)
10
100
1k
10k
LTC1290 TPC11
+
VIN
RSOURCE+
VREF = 5V
VCC = 5V
TA = 25°C
0V TO 5V INPUT STEP
ACLK FREQUENCY (MHz)
0
SUPPLY
CURRENT,
I
CC
(
A)
1.00
2.00
3.00
4.00
1290 TPC13
200
180
160
140
120
100
80
60
40
20
VCC = 5V
CMOS LEVELS
Supply Current (Power Shutdown)
vs ACLK
Supply Current (Power Shutdown)
vs Temperature
AMBIENT TEMPERATURE, TA (°C)
–50
SUPPLY
CURRENT,
I
CC
(
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, TA (°C)
–50
0
INPUT
CHANNEL
LEAKAGE
CURRENT
(nA)
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, VREF (V)
0
PEAK-TO-PEAK
NOISE
ERROR
(LSBs)
0.25
0.75
1.00
1.25
2
4
5
2.25
1290 TPC15
0.50
13
1.50
1.75
2.00
LTC1290 NOISE 200
VP-P
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.
DOUT (Pin 16): Digital Data Output. The A/D conversion
result is shifted out of this output.
Maximum Filter Resistor vs
Cycle Time
CYCLE TIME, tCYC (s)
MAXIMUM
R
FILTER
**
(
)
10
100
1k
10k
10
1000
10000
1290 TPC10
1.0
100
+
VIN
CFILTER ≥ 1F
RFILTER
** 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.
TYPICAL PERFOR A CE CHARACTERISTICS
UW
UU
U
PI FU CTIO S
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