TC14433_08 Datasheet, PDF (5/24 Pages) Microchip Technology – 3-1/2 Digit, Analog-to-Digital Converter

TC14433/A
2.0 TYPICAL PERFORMANCE CURVES
Note:
The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein
are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
Note: Unless otherwise specified, V_DD = +5V, V_EE = -5V, C₁ = 0.1 µF, (Mylar), C₀ = 0.1 µF, R_C = 300 kΩ, R₁ = 470 kΩ @ V_REF = 2V,
R₁ = 27 kΩ @ V_REF = 200 mV, T_A = +25°C.
Typical Rollover Error vs. Power Supply Skew
4
3
2
1
0
Note: Rollover Error is the Difference in Output
-1
Reading for the same Analog Input Switched
-2
from Positive to Negative.
-3
-4
-3
-2 -1
0
1
2
3
4
(V_DD I-IV_EE I) - SUPPLY VOLTAGE SKEW (V)
FIGURE 2-1:
Supply Skew
Rollover Error vs. Power
Typical Quiescent Power Supply Current vs.Temp.
4
3
V_EE = -8V
V_DD = +8V
2
1
V_EE = -5V
V_DD = +5V
0
-40 -20
0
20 40 60 80 100
T_A - TEMPERATURE (°C)
FIGURE 2-4:
Quiescent Power Supply
Current vs. Ambient Temperature.
Typical N-Channel Sink Current at V_DD – V_SS = 5 Volts
5
4
3
-40°C
+25°C
2
+85°C
1
0
0
1
2
3
4
5
V_DS - DRAIN TO SOURCE VOLTAGE (V_DC)
FIGURE 2-2:
Sink Current at V_DD = 5V.
Typical Clock Frequency vs. Resistor (R_C)
Note: ±5% Typical Variation over
Supply Voltage Range
1M
of ±4.5V to ±8V
100k
10k
10kΩ
100kΩ
1MΩ
R_C - CLOCK FREQUENCY RESISTOR
CONVERSION RATE = ^{CLOCK FREQUENCY} ±1.5%
16,400
MULTIPLEX RATE =
CLOCK FREQUENCY
80
FIGURE 2-3:
Resistor (R_C)
Clock Frequency vs.
Typical P-Channel Sink Current at V_DD – V_SS = 5 Volts
-3
-40°C
-2
+25°C
+85°C
-1
0
0
-1
-2
-3
-4
-5
V_DS - DRAIN TO SOURCE VOLTAGE (V_DC)
FIGURE 2-5:
Sink Current at VDD = 5V.
Typical % Change fo Clock Frequency vs. Temp.
4
±5V Supply
3
2
1
0
±8V Supply
-1
-2
Normalized at 25°C
-3
-4
-40 -20
0
20 40
60 80
T_A - TEMPERATURE (°C)
CONVERSION RATE = ^{CLOCK FREQUENCY} ±1.5%
16,400
MULTIPLEX RATE =
CLOCK FREQUENCY
80
FIGURE 2-6:
% Change to Clock
Frequency vs. Ambient Temperature.
© 2008 Microchip Technology Inc.
DS21394D-page 5