Datasheet

© 2009 Microchip Technology Inc. DS22233A-page 9
MCP434X/436X
Rheostat
Differential
Non-linearity
MCP43X1
(Note 4, Note 8)
MCP43X2 devices
only
(Note 4)
R-DNL -0.5 ±0.25 +0.5 LSb 5 kΩ 8-bit 5.5V, I
W
= 900 µA
-1.0 +0.5 +1.0 LSb 3.0V (Note 7)
-0.375 ±0.25 +0.375 LSb 7-bit 5.5V, I
W
= 900 µA
-0.75 +0.5 +0.75 LSb 3.0V (Note 7)
-0.5 ±0.25 +0.5 LSb 10 kΩ 8-bit 5.5V, I
W
= 450 µA
-1.0 +0.25 +1.0 LSb 3.0V (Note 7)
-0.375 ±0.25 +0.375 LSb 7-bit 5.5V, I
W
= 450 µA
-0.75 +0.5 +0.75 LSb 3.0V (Note 7)
-0.5 ±0.25 +0.5 LSb 50 kΩ 8-bit 5.5V, I
W
= 90 µA
-0.5 ±0.25 +0.5 LSb 3.0V (Note 7)
-0.375 ±0.25 +0.375 LSb 7-bit 5.5V, I
W
= 90 µA
-0.375 ±0.25 +0.375 LSb 3.0V (Note 7)
-0.5 ±0.25 +0.5 LSb 100 kΩ 8-bit 5.5V, I
W
= 45 µA
-0.5 ±0.25 +0.5 LSb 3.0V (Note 7)
-0.375 ±0.25 +0.375 LSb 7-bit 5.5V, I
W
= 45 µA
-0.375 ±0.25 +0.375 LSb 3.0V (Note 7)
Capacitance (P
A
)C
AW
— 75 — pF f =1 MHz, Code = Full Scale
Capacitance (P
w
)C
W
— 120 — pF f =1 MHz, Code = Full Scale
Capacitance (P
B
)C
BW
— 75 — pF f =1 MHz, Code = Full Scale
AC/DC CHARACTERISTICS (CONTINUED)
DC Characteristics
Standard Operating Conditions (unless otherwise specified)
Operating Temperature –40°C ≤ T
A
≤ +125°C (extended)
All parameters apply across the specified operating ranges unless noted.
V
DD
= +2.7V to 5.5V, 5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ devices.
Typical specifications represent values for V
DD
= 5.5V, T
A
= +25°C.
Parameters Sym Min Typ Max Units Conditions
Note 1: Resistance is defined as the resistance between terminal A to terminal B.
2: INL and DNL are measured at V
W
with V
A
= V
DD
and V
B
= V
SS
.
3: MCP43X1 only.
4: MCP43X2 only, includes V
WZSE
and V
WFSE
.
5: Resistor terminals A, W and B’s polarity with respect to each other is not restricted.
6: This specification by design.
7: Non-linearity is affected by wiper resistance (R
W
), which changes significantly over voltage and
temperature.
8: The MCP43X1 is externally connected to match the configurations of the MCP43X2, and then tested.
9: POR/BOR is not rate dependent.
10: Supply current is independent of current through the resistor network.