LTC1196 Datasheet, PDF (8/28 Pages) Linear Technology – 8-Bit, SO-8, 1MSPS ADCs with Auto-Shutdown Options

LTC1196/LTC1198
TYPICAL PERFOR A CE CHARACTERISTICS
Gain vs Supply Voltage
0.5
0.4 ^TA ^{= 25°C}
f_CLK = 3MHz
0.3 V_REF = V_CC
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
T_A = 25°C
17 V_REF = V_CC
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
90 ^VCC ^{= 5V}
V_REF = 5V
80
70
60
50
40
30
20
10
0
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
1196/98 G13
ADC Noise vs Reference and
Supply Voltage
0.35
T_A = 25°C
0.30 V_REF = V_CC
0.25
0.20
0.15
0.10
0.05
0
2.5 3.0
3.5 4.0 4.5 5.0
SUPPLY VOLTAGE (V)
5.5 6.0
1196/98 G14
Digital Input Logic Threshold vs
Supply Voltage
1.9
T_A = 25°C
1.7
1.5
D_OUT Delay Time vs
Supply Voltage
140
120
100
T_A = 25°C
V_REF = V_CC
1.3
80
1.1
60
0.9
40
0.7
20
0.5
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
SUPPLY VOLTAGE (V)
0
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
SUPPLY VOLTAGE (V)
1196/98 G16
1196/98 G17
*AS THE FREQUENCY IS DECREASED FROM 12MHz, MINIMUM CLOCK FREQUENCY (∆ERROR ≤ 0.1LSB) REPRESENTS THE
FREQUENCY AT WHICH A 0.1LSB SHIFT IN ANY CODE TRANSITION FROM ITS 12MHz VALUE IS FIRST DETECTED.
8
Maximum Clock Frequency vs
Source Resistance
18
16
14
12
V_IN
+IN
10
–IN
8
R_SOURCE–
6
4
2
T_A = 25°C
V_CC = V_REF = 5V
0
1
10
100
1k
10k 100k
SOURCE RESISTANCE (Ω)
1196/98 G12
Sample-and-Hold Acquisition
Time vs Source Resistance
10000
T_A = 25°C
V_CC = V_REF = 5V
1000
R_SOURCE+
V_IN
+IN
–IN
100
1
10
100
1k
SOURCE RESISTANCE (Ω)
10k
1196/98 G15
D_OUT Delay Time vs Temperature
160
140 ^{VREF = VCC}
120
V_CC = 2.7V
100
V_CC = 5V
80
60
40
20
0
– 60 –40 –20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
1196/98 G18