MCP40D17/18/19
AC/DC CHARACTERISTICS (CONTINUED)
DC Characteristics
Standard Operating Conditions (unless otherwise specified)
Operating Temperature
–40°C ≤ TA ≤ +125°C (extended)
All parameters apply across the specified operating ranges unless noted.
VDD = +2.7V to 5.5V, 5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ devices.
Typical specifications represent values for VDD = 5.5V, TA = +25°C.
Parameters
Sym
Min
Typ Max Units
Conditions
Resistance
(± 20%)
RAB
4.0
5
6.0
kΩ -502 devices (Note 1)
8.0
10
12.0
kΩ -103 devices (Note 1)
40.0
50
60.0
kΩ -503 devices (Note 1)
80.0
100 120.0 kΩ -104 devices (Note 1)
Resolution
N
128
Taps No Missing Codes
Step Resistance
RS
—
RAB /
—
(127)
Ω Note 5
Wiper Resistance
RW
—
—
Nominal
Resistance
Tempco
ΔRAB/ΔT
—
—
—
Ratiometeric
Tempco
ΔVWB/ΔT
—
100
170
Ω VDD = 5.5 V, IW = 2.0 mA, code = 00h
155
325
Ω VDD = 2.7 V, IW = 2.0 mA, code = 00h
50
— ppm/°C TA = -20°C to +70°C
100
— ppm/°C TA = -40°C to +85°C
150
— ppm/°C TA = -40°C to +125°C
15
— ppm/°C Code = Midscale (3Fh)
Resistor Terminal VA,VW,VB
Vss
Input Voltage
Range (Terminals
A, B and W)
—
VDD
V Note 4, Note 5
Maximum current
IT
through Terminal
(A, W or B)
Note 5
—
—
2.5
mA Terminal A
IAW, W = Full Scale (FS)
—
—
2.5
mA Terminal B
IBW, W = Zero Scale (ZS)
—
—
2.5
mA Terminal W
IAW or IBW, W = FS or ZS
—
—
1.38
mA
IAB, VB = 0V, VA = 5.5V,
RAB(MIN) = 4000
—
— 0.688 mA
Terminal A
and
IAB, VB = 0V, VA = 5.5V,
RAB(MIN) = 8000
—
— 0.138 mA
Terminal B
IAB, VB = 0V, VA = 5.5V,
RAB(MIN) = 40000
—
— 0.069 mA
IAB, VB = 0V, VA = 5.5V,
RAB(MIN) = 80000
Note 1: Resistance is defined as the resistance between terminal A to terminal B.
2: INL and DNL are measured at VW with VA = VDD and VB = VSS.
3: MCP40D18 device only, includes VWZSE and VWFSE.
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 (RW), 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
© 2009 Microchip Technology Inc.
DS22152B-page 5