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LTC1289 Datasheet(PDF) 6 Page - Linear Technology

Part No. LTC1289
Description  3 Volt Single Chip 12-Bit Data Acquisition System
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Maker  LINER [Linear Technology]
Homepage  http://www.linear.com
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 6 page
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6
LTC1289
CC
HARA TERISTICS
A
TYPICALPERFOR
CE
Supply Current (Power Shutdown)
vs Temperature
Maximum Filter Resistor vs
Cycle Time
Sample and Hold Acquisition
Time vs Source Resistance
Supply Current (Power Shutdown)
vs ACLK
Input Channel Leakage Current
vs Temperature
Noise Error vs Reference Voltage
AMBIENT TEMPERATURE (°C)
–50
0
100
300
400
500
1000
700
–10
30
50
130
LTC1289 • TPC14
200
800
900
600
–30
10
70
90 110
ON CHANNEL
OFF CHANNEL
GUARANTEED
REFERENCE VOLTAGE (V)
0
0.6
0.8
1.0
2.0
0.4
0.2
0
0.5
1.0
1.5
2.5
3.0
LTC1289 • TPC15
LTC1289 NOISE = 200
µV
p-p
CYCLE TIME (
µs)
10
100
1k
10k
10
1000
10000
LTC1289 TPC10
1
100
+
VIN
CFILTER ≥ 1µF
RFILTER
RSOURCE+ (Ω)
100
1
10
100
1k
10k
LTC1289 TPC11
+
VIN
RSOURCE+
VREF = 2.5V
VCC = 3V
TA = 25°C
0V TO 2.5V INPUT STEP
AMBIENT TEMPERATURE (°C)
–60
0
0.2
0.6
0.8
1.0
2.0
1.4
–20
20
40
LTC1289 TPC12
0.4
1.6
1.8
1.2
–40
0
60
80
100
ACLK OFF DURING
POWER SHUTDOWN
ACLK FREQUENCY (kHZ)
200
12
14
16
800
10
8
400
600
1000
6
4
18
LTC1298 TPC13
VCC = 3V
CMOS LOGIC SWINGS
tsuCS vs Supply Voltage
Power Consumption with Power
Shutdown vs fSAMPLE
SUPPLY VOLTAGE (V)
2.7
0
50
100
150
200
250
300
2.8 2.9
3.3
3.4
LTC1289 TPC16
3.6
3.0 3.1 3.2
3.5
TA = 25°C
** 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.
fSAMPLE (Hz)
10
100
1000
10000
1
100
1000
10000
LTC1289 TPC17
1
10
VCC = 3V
VREF = 2.5V
ACLK = 2MHz
CMOS LOGIC SWINGS
THREE CONVERSIONS/CYCLE




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