Datasheet
© 2006 Microchip Technology Inc. DS21945E-page 5
MCP4021/2/3/4
Digital Inputs/Outputs (CS, U/D)
Input High Voltage V
IH
0.7 V
DD
—— V
Input Low Voltage V
IL
——0.3V
DD
V
High-Voltage Input Entry Voltage V
IHH
8.5 — 12.5
(6)
V Threshold for WiperLock™
Technology
High-Voltage Input Exit Voltage V
IHH
——V
DD
+0.8
(6)
V
CS
Pull-up/Pull-down Resistance R
CS
—16 — kΩ V
DD
= 5.5V, V
CS
= 3V
CS
Weak Pull-up/Pull-down Current I
PU
— 170 — µA V
DD
= 5.5V, V
CS
= 3V
Input Leakage Current I
IL
-1 — 1 µA V
IN
= V
DD
CS and U/D Pin Capacitance C
IN
, C
OUT
—10 — pFf
C
= 1 MHz
RAM (Wiper) Value
Value Range N 0h — 3Fh hex
EEPROM
Endurance E
ndurance
— 1M — Cycles
EEPROM Range N 0h — 3Fh hex
Initial Factory Setting N 1Fh hex WiperLock Technology = Off
Power Requirements
Power Supply Sensitivity
(MCP4021 and MCP4023 only)
PSS — 0.0015 0.0035 %/% V
DD
= 4.5V to 5.5V, V
A
= 4.5V,
Code = 1Fh
— 0.0015 0.0035 %/% V
DD
= 2.7V to 4.5V, V
A
= 2.7V,
Code = 1Fh
AC/DC CHARACTERISTICS (CONTINUED)
Electrical Specifications: Unless otherwise indicated, all parameters apply across the specified operating ranges.
T
A
= -40°C to +125°C, 2.1 kΩ, 5kΩ, 10 kΩ and 50 kΩ devices. Typical specifications represent values for V
DD
= 5.5V, V
SS
= 0V,
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
.
(-202 devices V
A
= 4V).
3: MCP4021/23 only, test conditions are: I
W
= 1.9 mA, code = 00h.
4: MCP4022/24 only, test conditions are:
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. See
Section 6.0 “Resistor” for additional information.
8: The MCP4021 is externally connected to match the configurations of the MCP4022 and MCP4024, and then tested.
Device
Resistance
Current at Voltage Comments
5.5V 2.7V
2.1 kΩ 2.25 mA 1.1 mA MCP4022 includes V
WZSE
MCP4024 includes V
WFSE
5kΩ 1.4 mA 450 µA
10 kΩ 450 µA 210 µA
50 kΩ 90 µA 40 µA