Datasheet
Table Of Contents
- Features
- Applications
- Functional Block Diagram
- General Description
- Specifications
- Absolute Maximum Ratings
- Pin Configuration and Function Descriptions
- Typical Performance Characteristics
- Test Circuits
- Theory of Operation
- Serial Data Interface
- Shift Register
- RDAC Register
- 20-TP Memory
- Write Protection
- Basic Operation
- 20-TP Readback and Spare Memory Status
- Shutdown Mode
- Resistor Performance Mode
- Reset
- SDO Pin and Daisy-Chain Operation
- RDAC Architecture
- Programming the Variable Resistor
- Programming the Potentiometer Divider
- EXT_CAP Capacitor
- Terminal Voltage Operating Range
- Applications Information
- Outline Dimensions
Data Sheet AD5291/AD5292
TYPICAL PERFORMANCE CHARACTERISTICS
analog.com Rev. G | 16 of 33
0.14
–0.06
–0.04
–0.02
0
0.02
0.04
0.06
0.08
0.10
0.12
0 32 64 96 128 160 192 224 255
DNL (LSB)
CODE (Decimal)
+25°C
–40°C
+105°C
07674-009
R
AB
= 20kΩ
Figure 24. R-DNL in R-Perf Mode vs. Code vs. Temperature (AD5291)
0.25
–0.10
–0.05
0
0.05
0.10
0.15
0.20
0 32 64 96 128 160 192 224 255
INL (LSB)
CODE (Decimal)
+25°C
–40°C
+105°C
07674-012
R
AB
= 20kΩ
Figure 25. R-INL in Normal Mode vs. Code vs. Temperature (AD5291)
0.03
–0.05
–0.04
–0.03
–0.02
–0.01
0
0.01
0.02
0 32 64 96 128 160 192 224 255
DNL (LSB)
CODE (Decimal)
+25°C
–40°C
+105°C
07674-013
R
AB
= 20kΩ
Figure 26. R-DNL in Normal Mode vs. Code vs. Temperature (AD5291)
07674-212
0.14
–0.06
–0.04
–0.02
0
0.02
0.04
0.06
0.08
0.10
0.12
0 32 64 96 128 160 192 224 255
DNL (LSB)
CODE (Decimal)
20kΩ
50kΩ
100kΩ
TEMPERATURE = 25°C
Figure 27. R-DNL in R-Perf Mode vs. Code vs. Nominal Resistance (AD5291)
07674-217
0.25
–0.10
–0.05
0
0.05
0.10
0.15
0.20
0 32 64 96 128 160 192 224 255
INL (LSB)
CODE (Decimal)
20kΩ
50kΩ
100kΩ
TEMPERATURE = 25°C
Figure 28. R-INL in Normal Mode vs. Code vs. Nominal Resistance (AD5291)
07674-214
0.03
–0.05
–0.04
–0.03
–0.02
–0.01
0
0.01
0.02
0 32 64 96 128 160 192 224 255
DNL (LSB)
CODE (Decimal)
20kΩ
50kΩ
100kΩ
TEMPERATURE = 25°C
Figure 29. R-DNL in Normal Mode vs. Code vs. Nominal Resistance (AD5291)