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2012 Microchip Technology Inc.
DS25118C-page 7
MCP47DA1
Digital Inputs/Outputs (SDA, SCK)
Schmitt Trigger
High Input
Threshold
VIH
0.7 VDD
——
V
2.7V
V
DD 5.5V
Schmitt Trigger
Low Input
Threshold
VIL
-0.5
—
0.3VDD
V
Hysteresis of
Schmitt Trigger
Inputs (Note 3)
VHYS
—0.1VDD
—
V
All inputs except SDA and SCL
N.A.
—
V
SDA
and
SCL
100 kHz
VDD < 2.0V
N.A.
—
V
VDD 2.0V
0.1 VDD
——
V
400 kHz
VDD < 2.0V
0.05 VD
D
——
V
VDD 2.0V
Output Low
Voltage (SDA)
VOL
VSS
—0.2VDD
VVDD < 2.0V, IOL = 1 mA
VSS
—0.4
V
VDD 2.0V, IOL = 3 mA
Input Leakage
Current
IIL
-1
—
1
A
VREF = VDD and VREF = VSS
Pin Capacitance
CIN, COUT
—10
—
pF
fC = 400 kHz
RAM (Wiper) Value
Value Range
N
0h
—
7Fh
hex
Zero Scale = 00h thru 20h,
Full Scale = 60h thru 7Fh
Wiper POR/BOR
Value
NPOR/BOR
40h
hex
Power Requirements
Power Supply
Sensitivity
PSS
—
0.0015
0.0035
%/%
VDD = 2.7V to 5.5V,
VREF = 1.65V, Code = 40h
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.
VDD = +2.7V to +5.5V. CL = 1 nF, RL = 5 k .
Typical specifications represent values for VDD = 5.5V, TA = +25°C.
Parameters
Sym
Min
Typ
Max
Units
Conditions
Note 1:
Resistance is defined as the resistance between the VREF pin and the VSS pin.
2:
INL and DNL are measured at VOUT from Code = 20h (Zero-Scale) through Code = 60h (Full-Scale).
3:
This specification by design.
4:
Non-linearity is affected by wiper resistance (RW), which changes significantly over voltage and
temperature.
5:
POR/BOR is not rate dependent.
6:
Supply current is independent of VREF current.
7:
See Section 7.1.3.
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