Datasheet

© 2006 Microchip Technology Inc. DS21945E-page 3
MCP4021/2/3/4
Wiper Resistance (Note 3, Note 4) R
W
— 70 125 Ω 5.5V
— 70 325 Ω 2.7V
Nominal Resistance Tempco ΔR/ΔT — 50 — ppm/°C T
A
= -20°C to +70°C
— 100 — ppm/°C T
A
= -40°C to +85°C
— 150 — ppm/°C T
A
= -40°C to +125°C
Ratiometeric Tempco ΔV
WA
/ΔT — 10 — ppm/°C MCP4021 and MCP4023 only,
code = 1Fh
Full-Scale Error V
WFSE
-0.5 -0.1 +0.5 LSb Code 3Fh (MCP4021/23 only)
Zero-Scale Error V
WZSE
-0.5 +0.1 +0.5 LSb Code 00h (MCP4021/23 only)
Monotonicity N Yes Bits
Potentiometer Integral Non-linearity INL -0.5 ±0.25 +0.5 LSb MCP4021/23 only (Note 2)
Potentiometer Differential
Non-linearity
DNL -0.5 ±0.25 +0.5 LSb MCP4021/23 only (Note 2)
Resistor Terminal Input Voltage
Range (Terminals A, B and W)
V
A,
V
W,
V
B
Vss — V
DD
V Note 5, Note 6
Maximum current through A, W or B I
W
—— 2.5 mANote 6
Leakage current into A, W or B I
WL
— 100 — nA MCP4021 A = W = B = V
SS
— 100 — nA MCP4022/23 A = W = V
SS
— 100 — nA MCP4024 W = V
SS
Capacitance (P
A
)C
AW
— 75 — pF f =1 MHz, code = 1Fh
Capacitance (P
w
)C
W
— 120 — pF f =1 MHz, code = 1Fh
Capacitance (P
B
)C
BW
— 75 — pF f =1 MHz, code = 1Fh
Bandwidth -3 dB BW — 4 — MHz -202
devices
Code = 1F,
output load = 30 pF
— 2 — MHz -502
devices
— 1 — MHz -103
devices
— 200 — kHz -503
devices
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