Datasheet
Table Of Contents
- Features
- Applications
- Functional Block Diagram
- General Description
- Revision History
- Specifications
- Absolute Maximum Ratings
- Pin Configuration and Function Descriptions
- Typical Performance Characteristics
- Test Circuits
- I2C Interface
- Theory of Operation
- Programming the Variable Resistor
- Programming the Potentiometer Divider
- I2C-Compatible 2-Wire Serial Bus
- Level Shifting for Bidirectional Interface
- ESD Protection
- Terminal Voltage Operating Range
- Maximum Operating Current
- Power-Up Sequence
- Layout and Power Supply Bypassing
- Constant Bias to Retain Resistance Setting
- Outline Dimensions

Data Sheet AD5247
Rev. F | Page 9 of 20
CODE (Decimal)
RHEOSTAT MODE INL (LSB)
0
–1.0
–0.8
–0.6
–0.4
16 32 48
–0.2
0
0.2
0.4
0.6
0.8
1.0
64 80 96 112 128
T
A
= –40°C
T
A
= +25°C
T
A
= +85°C
T
A
= +125°C
T
A
= –40°C
T
A
= +85°C
T
A
= +25°C
T
A
= +125°C
03876-008
Figure 10. R-INL vs. Code vs. Temperature
CODE (Decimal)
RHEOSTAT MODE DNL (LSB)
0
–0.5
–0.4
–0.3
–0.2
16 32 48
–0.1
0
0.1
0.2
0.3
0.4
0.5
64 80 96 112
128
T
A
= –40°C, +25°C, +85°C, +125°C
–40°C
+25°C
+85°C
+125°C
V
DD
= 2.7V
R
AB
= 10kΩ
03876-009
Figure 11. R-DNL vs. Code vs. Temperature
TEMPERATURE (°C)
RHEOSTAT MODE INL (LSB)
–40
–3.0
–0.5
0
–25 –10 5
20 35 50 65 80
–2.5
–2.0
–1.5
–1.0
FULL-SCALE ERROR (LSB)
95 110 125
V
DD
= 5.5V, V
A
= 5.5V
V
DD
= 2.7V, V
A
= 2.7V
03876-010
Figure 12. Full-Scale Error vs. Temperature
TEMPERATURE (°C)
ZERO-SCALE ERROR (LSB)
–40
0
0.25
0.50
0.75
–25 –10 5
1.00
1.25
1.50
20 35 50 65 80 95 110 125
V
DD
= 5.5V, V
A
= 5.5V
V
DD
= 2.7V, V
A
= 2.7V
03876-011
Figure 13. Zero-Scale Error vs. Temperature
TEMPERATURE (°C)
I
DD,
SUPPLY CURRENT (µA)
–40
0.01
0.1
1
10
–25 –10
100
5 20 35 50 65 80 95 110 125
V
DD
= 5.5V
V
DD
= 2.7V
DIGITAL INPUTS = 0V
CODE = 0x40
03876-012
Figure 14. Supply Current vs. Temperature
0
10
20
30
40
50
60
70
80
90
100
1 9 17 25
33 41 49 57 65 73 81 89 97 105 113 121
RTHESOSTAT MODE TEMPCO (ppm/°C)
CODE (Decimal)
5V
2.7V
03876-013
I
WB
= 200µA
R
AB
= 10kΩ
Figure 15. ∆R
WB
/∆T vs. Code