Datasheet

LTC1196/LTC1198
8
119698fb
TYPICAL PERFORMANCE CHARACTERISTICS
Linearity Error
vs Reference Voltage
Linearity Error vs Supply Voltage Supply Current vs Sample Rate
Minimum Clock Rate for
0.1LSB* Error
ADC Noise vs Referenced
and Supply Voltage
Sample-and-Hold Acquisition
Time vs Source Resistance
Gain vs Supply Voltage
Maximum Clock Frequency
vs Supply Voltage
Maximum Clock Frequency
vs Source Resistance
REFERENCE VOLTAGE (V)
LINEARITY ERROR (LSB)
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
1196/98 G07
0.5 5.0
3.52.5
4.0
1.0
2.0
1.5 4.53.0
T
A
= 25°C
V
CC
= 5V
f
CLK
= 12MHz
SUPPLY VOLTAGE (V)
2.5
LINEARITY ERROR (LSB)
0.5
0.4
0.3
0.2
0.1
0
–0.1
–0.2
–0.3
–0.4
–0.5
3.5
4.5
5.0
1196/98 G08
3.0
4.0
5.5
6.0
T
A
= 25°C
V
REF
= V
CC
f
CLK
= 3MHz
REFERENCE VOLTAGE (V)
0
MAGNITUDE OF GAIN ERROR (LSB)
4.0
1196/98 G09
1.0
2.0
3.0
5.0
0.5 1.5 2.5
3.5 4.5
T
A
= 25°C
V
CC
= 5V
f
CLK
= 12MHz
0.5
0.4
0.3
0.2
0.1
0
–0.1
–0.2
–0.3
–0.4
–0.5
SUPPLY VOLTAGE (V)
2.5
MAGNITUDE OF GAIN ERROR (LSB)
0.5
0.4
0.3
0.2
0.1
0
–0.1
–0.2
–0.3
–0.4
–0.5
3.5
4.5
5.0
1196/98 G10
3.0
4.0
5.5
6.0
T
A
= 25°C
f
CLK
= 3MHz
V
REF
= V
CC
SUPPLY VOLTAGE (V)
2.5
19
17
15
13
11
9
7
5
4.0 5.0
1196/98 G11
3.0 3.5
4.5 5.5 6.0
MAXIMUM CLOCK FREQUENCY (MHz)
T
A
= 25°C
V
REF
= V
CC
SOURCE RESISTANCE (Ω)
CLOCK FREQUENCY (MHz)
18
16
14
12
10
8
6
4
2
0
1
100
1k 100k
1196/98 G12
10 10k
T
A
= 25°C
V
CC
= V
REF
= 5V
R
SOURCE
–
V
IN
+IN
–IN
TEMPERATURE (°C)
–55
MINIMUM CLOCK FREQUENCY (kHz)
100
90
80
70
60
50
40
30
20
10
0
–15
25
45 125
1196/98 G13
–35 5
65
85
105
V
CC
= 5V
V
REF
= 5V
SUPPLY VOLTAGE (V)
2.5
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
4.0 5.0
1196/98 G14
3.0 3.5
4.5 5.5 6.0
PEAK-TO-PEAK ADC NOISE (LSB)
T
A
= 25°C
V
REF
= V
CC
SOURCE RESISTANCE (Ω)
1
100
S&H ACQUISITION TIME (ns)
1000
10000
100 10k
1196/98 G15
10 1k
T
A
= 25°C
V
CC
= V
REF
= 5V
R
SOURCE
+
V
IN
+IN
–IN
*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.