ADS8284
www.ti.com................................................................................................................................................................................................... SLAS628–MARCH 2009
TYPICAL CHARACTERISTICS (continued)
OPA NEGATIVE SUPPLY CURRENT
(IEE)
vs
OPA NEGATIVE SUPPLY VOLTAGE
(-VEE)
OPA -VE SUPPLY CURRENT (IEE)
vs
DIFFERENTIAL NONLINEARITY
vs
FREE-AIR TEMPERATURE
FREE-AIR TEMPERATURE
11
10.5
10
9.65
1
0.75
0.5
VCC = 6 V,
VEE = -6 V
T
= 25°C,
A
VCC = 6 V
9.6
Channel = 0
= 4.096 V,
V
0.25
0
ref
9.55
9.5
VCC = 6 V,
VEE = -6 V,
+VA = 5 V,
Throughput = 1 MSPS
9.5
9
-0.25
-0.5
9.45
9.4
8.5
8
-0.75
-1
-40
-20
T
A
0
20
40
- Free-Air Temperature - °C
60
80
-40
-20
0
20
40
60
80
-8
-7
-6
-5
-4
-3
-2
VEE - Voltage Supply - V
T
- Free-Air Temperature - °C
A
Figure 18.
Figure 19.
Figure 20.
DIFFERENTIAL NONLINEARITY
vs
ANALOG SUPPLY VOLTAGE (+VA)
DIFFERENTIAL NONLINEARITY
vs
DIFFERENTIAL NONLINEARITY
vs
OPA SUPPLY VOLTAGE (VCC)
REFERENCE VOLTAGE
1
0.75
0.5
1
1
0.75
0.5
0.8
0.6
0.4
0.2
0
Channel = 0
= 4.096 V,
Channel = 0
= 4.096 V,
V
Channel = 0
T = 25°C,
A
ref
0.25
0
V
0.25
0
ref
= 25°C,
TA = 25°C,
VCC = 6 V,
Throughput = 1 MSPS
T
A
VCC = 6 V,
+VA = 5 V,
Throughput = 1 MSPS
+VA = 5 V,
-7.5 V < VEE < -2.5 V,
Throughput = 1 MSPS
-0.2
-0.4
-0.6
-0.8
-1
-0.25
-0.5
-0.25
-0.5
-0.75
-1
-0.75
-1
4.7 4.8 4.9
5
+VA - Analog Supply - V
5.1 5.2 5.3 5.4
4
4.5
5
V
5.5
6
6.5
7
- Supply Voltage - V
7.5
8
3
3.2
3.4
3.6
3.8
4
- Reference Voltage - V
4.2
4.4
V
CC
REF
Figure 21.
Figure 22.
Figure 23.
DIFFERENTIAL NONLINEARITY
vs
MULTIPLEXER CHANNELS
INTEGRAL NONLINEARITY
vs
FREE-AIR TEMPERATURE
INTEGRAL NONLINEARITY
vs
ANALOG SUPPLY VOLTAGE (+VA)
1
2
1.5
1
2
1.5
1
0.8
0.6
0.4
0.2
0
T
= 25°C,
Channel = 0
= 4.096 V,
A
Channel = 0
= 25°C
0.5
0
0.5
0
V
V
= 4.096 V,
ref
T
ref
A
VCC = 6 V,
VEE = -6 V,
+VA = 5 V,
Throughput = 1 MSPS
VCC = 6 V,
VEE = -6 V,
+VA = 5 V,
Throughput = 1 MSPS
V
= 4.096 V,
ref
VCC = 6 V,
VEE = -6 V,
Throughput = 1 MSPS
-0.2
-0.4
-0.6
-0.8
-1
-0.5
-1
-0.5
-1
-1.5
-2
-1.5
-2
0
1
2
Multiplexer Channels
3
-40
-20
T
0
20
40
- Free-Air Temperature - °C
60
80
4.7
4.8
4.9
5
5.1
5.2
+VA - Analog Voltage - V
5.3
5.4
A
Figure 24.
Figure 25.
Figure 26.
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