LTC1196 查看數據表（PDF） - Linear Technology
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LTC1196 Datasheet PDF : 28 Pages
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LTC1196/LTC1198
TYPICAL PERFORMANCE CHARACTERISTICS
Linearity Error vs
Reference Voltage
1.0
0.9
0.8
TA = 25°C
VCC = 5V
fCLK = 12MHz
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
REFERENCE VOLTAGE (V)
1196/98 G07
Linearity Error vs Supply Voltage
0.5
TA = 25°C
0.4 VREF = VCC
0.3 fCLK = 3MHz
0.2
0.1
0
–0.1
–0.2
–0.3
–0.4
–0.5
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
SUPPLY VOLTAGE (V)
1196/98 G08
Gain vs Supply Voltage
0.5
TA = 25°C
0.4 fCLK = 3MHz
0.3 VREF = VCC
0.2
0.1
0
–0.1
–0.2
–0.3
–0.4
–0.5
2.5 3.0 3.5 4.0 4.5 5.0
SUPPLY VOLTAGE (V)
5.5 6.0
1196/98 G10
Maximum Clock Frequency vs
Supply Voltage
19
TA = 25°C
17 VREF = VCC
15
13
11
9
7
5
2.5 3.0
3.5 4.0 4.5 5.0
SUPPLY VOLTAGE (V)
5.5 6.0
1196/98 G11
Minimum Clock Rate for
0.1LSB* Error
100
VCC = 5V
90 VREF = 5V
80
70
ADC Noise vs Referenced and
Supply Voltage
0.35
TA = 25°C
0.30 VREF = VCC
0.25
60
0.20
50
40
0.15
30
0.10
20
0.05
10
0
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
1196/98 G13
0
2.5 3.0
3.5 4.0 4.5 5.0
SUPPLY VOLTAGE (V)
5.5 6.0
1196/98 G14
*AS THE FREQUENCY IS DECREASED FROM 12MHz, MINIMUM CLOCK FREQUENCY (ΔERROR ≤ 0.1LSB) REPRESENTS THE
FREQUENCY AT WHICH A 0.1LSB SHIFT IN ANY CODE TRANSITION FROM ITS 12MHz VALUE IS FIRST DETECTED.
8
Supply Current vs Sample Rate
0.5
TA = 25°C
0.4
VCC = 5V
0.3
fCLK = 12MHz
0.2
0.1
0
–0.1
–0.2
–0.3
–0.4
–0.5
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
REFERENCE VOLTAGE (V)
1196/98 G09
Maximum Clock Frequency vs
Source Resistance
18
TA = 25°C
16
VCC = VREF = 5V
14
12
VIN
+IN
10
–IN
8
RSOURCE–
6
4
2
0
1
10
100
1k
10k 100k
SOURCE RESISTANCE (Ω)
1196/98 G12
Sample-and-Hold Acquisition
Time vs Source Resistance
10000
TA = 25°C
VCC = VREF = 5V
1000
RSOURCE+
VIN
+IN
–IN
100
1
10
100
1k
SOURCE RESISTANCE (Ω)
10k
1196/98 G15
119698fa
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