Datasheet

MCP40D17/18/19
DS22152B-page 8 © 2009 Microchip Technology Inc.
Digital Inputs/Outputs (SDA, SCK)
Schmitt Trigger
High Input
Threshold
V
IH
0.7 V
DD
—— V1.8V ≤ V
DD
≤ 5.5V
Schmitt Trigger
Low Input
Threshold
V
IL
-0.5 — 0.3V
DD
V
Hysteresis of
Schmitt Trigger
Inputs (Note 5)
V
HYS
—0.1V
DD
— V All inputs except SDA and SCL
N.A. — — V
SDA
and
SCL
100 kHz
V
DD
< 2.0V
N.A. — — V V
DD
≥ 2.0V
0.1 V
DD
—— V
400 kHz
V
DD
< 2.0V
0.05 V
DD
—— V V
DD
≥ 2.0V
Output Low
Voltage (SDA)
V
OL
V
SS
—0.2V
DD
VV
DD
< 2.0V, I
OL
= 1 mA
V
SS
—0.4 VV
DD
≥ 2.0V, I
OL
= 3 mA
Input Leakage
Current
I
IL
-1 — 1 µA V
IN
= V
DD
and V
IN
= V
SS
Pin Capacitance C
IN
, C
OUT
—10—pFf
C
= 400 kHz
RAM (Wiper) Value
Value Range N 0h — 7Fh hex
Wiper POR/BOR
Value
N
POR/BOR
3Fh hex
Power Requirements
Power Supply
Sensitivity
(MCP40D18 only)
PSS — 0.0005 0.0035 %/% V
DD
= 2.7V to 5.5V,
V
A
= 2.7V, Code = 3Fh
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: MCP40D18 device only, includes V
WZSE
and V
WFSE
.
4: Resistor terminals A, W and B’s polarity with respect to each other is not restricted.
5: This specification by design.
6: Non-linearity is affected by wiper resistance (R
W
), which changes significantly over voltage and
temperature.
7: POR/BOR is not rate dependent.
8: Supply current is independent of current through the resistor network