Microchip MCP4021 Manual

Microchip Ikke kategoriseret MCP4021

Læs gratis den danske manual til Microchip MCP4021 (74 sider) i kategorien Ikke kategoriseret. Denne vejledning er vurderet som hjælpsom af 15 personer og har en gennemsnitlig bedømmelse på 4.3 stjerner ud af 8 anmeldelser. Har du et spørgsmål om Microchip MCP4021, eller vil du spørge andre brugere om produktet?

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2006-2017 Microchip Technology Inc. DS20001945F-page 1
MCP4021/2/3/4
Features
• Nonvolatile Digital Potentiometer in SOT-23,
SOIC, MSOP and DFN Packages
• 64 Taps: 63 Resistors with Taps to Terminal A and
Terminal B
• Simple Up/Down (U/D) Protocol
• Power-on Recall of Saved Wiper Setting
• Resistance Values: 2.1 k, 5 k, 10 k or 50 k
• Low Tempco:
- Absolute (Rheostat): 50 ppm (0°C to 70°C Typ.)
- Ratiometric (Potentiometer): 10 ppm (Typ.)
• Low Wiper Resistance: 75 (Typ.)
• WiperLock™ Technology to Secure the wiper
setting in nonvolatile memory (EEPROM)
• High-Voltage Tolerant Digital Inputs: up to 12.5V
• Low-Power Operation: 1 µA Max Static Current
• Wide Operating Voltage: 2.7V to 5.5V
• Extended Temperature Range: –40°C to +125°C
• Wide Bandwidth (-3 dB) Operation:
- 4 MHz (Typ.) for 2.1 k Device
Description
The MCP4021/2/3/4 devices are nonvolatile, 6-bit
digital potentiometers that can be configured as either a
potentiometer or rheostat. The wiper setting is
controlled through a simple Up/Down (U/D) serial
interface.
These device’s implement Microchip’s WiperLock
technology, which allows application-specific
calibration settings to be secured in the EEPROM
without requiring the use of an additional write-protect
pin.
Package Types
Block Diagram
Device Features
.
A
W
B
MCP4021
SOIC, MSOP, DFN
MCP4022
SOT-23-6
MCP4023
SOT-23-6
MCP4024
SOT-23-5
RheostatPotentiometer
Potentiometer Rheostat
A
VSS
W
1
2
3
4
8
7
6
5
VDD U/D
NC
B
CS
4
1
2
3
5W
CS
VDD
VSS
U/D
4
1
2
3
6A
CS
VDD
VSS
U/D
5W
AW
B
4
1
2
3
6A
CS
VDD
VSS
U/D
5W
A
W
W
A
B B
V
DD
VSS
U/D
W
B
(Resistor Array)
Wiper Register
CS
WiperLock
EEPROM and
A
2-Wire
Interface
and
Control
Logic
Power-Up
and
Brown-Out
Control
Technology
Device Wiper
Configuration
Memory
Type
Resistance (typical) # of
Steps
VDD
Operating
Range
Control
Interface
WiperLock
Technology
Options (k) Wiper ()
MCP4021 Potentiometer (1) EE 2.1, 5.0, 10.0, 50.0 75 64 2.7V - 5.5V U/D Yes
MCP4022 Rheostat EE 2.1, 5.0, 10.0, 50.0 75 64 2.7V- 5.5V U/D Yes
MCP4023 Potentiometer EE 2.1, 5.0, 10.0, 50.0 75 64 2.7V - 5.5V U/D Yes
MCP4024 Rheostat EE 2.1, 5.0, 10.0, 50.0 75 64 2.7V - 5.5V U/D Yes
Note 1: Floating either terminal (A or B) allows the device to be used in Rheostat mode.
Low-Cost NV Digital POT with WiperLock™ Technology
MCP4021/2/3/4
DS20001945F-page 2 2006-2017 Microchip Technology Inc.
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings †
VDD ............................................................................................................. 6.5V
CS and U/D inputs w.r.t V
SS...................................
–0.3V to 12.5V
A, B and W terminals w.r.t V
SS................... –0.3V to VDD + 0.3V
Current at Input Pins ..................................................±10 mA
Current at Supply Pins ...............................................±10 mA
Current at Potentiometer Pins ...................................±2.5 mA
Storage temperature ....................................–65°C to +150°C
Ambient temp. with power applied ...............–55°C to +125°C
ESD protection on all pins  4 kV (HBM), 400V (MM)
Maximum Junction Temperature (TJ) ..........................+150°C
† Notice: Stresses above those listed under “Maximum
Ratings” may cause permanent damage to the device. This is
a stress rating only and functional operation of the device at
those or any other conditions above those indicated in the
operational listings of this specification is not implied.
Exposure to maximum rating conditions for extended periods
may affect device reliability.
AC/DC CHARACTERISTICS
Electrical Specifications: Unless otherwise indicated, all parameters apply across the specified operating ranges.
TA = –40°C to +125°C, 2.1 k5 k10 kand50 kdevicesTypical specifications represent values for V
DD = 5.5V, VSS = 0V,
TA = +25°C.
Parameters Sym Min Typ Max Units Conditions
Operating Voltage Range VDD 2.7 — 5.5 V
CS Input Voltage VCS VSS — 12.5 V The CS pin will be at one of
three input levels (VIL, V
IH or
VIHH). (Note 6)
Supply Current IDD — 45 — µA 5.5V, CS = V
SS, fU/D = 1 MHz
— 15 — µA 2.7V, CS = VSS, fU/D = 1 MHz
— 0.3 1 µA Serial Interface Inactive
(CS = VIH, U/D = VIH)
— 0.6 3 mA EE Write cycle, T
A = +25°C
Resistance
(± 20%)
RAB 1.68 2.1 2.52 k-202 devices( )Note 1
4.0 5 6.0 k-502 devices( )Note 1
8.0 10 12.0 k-103 devices( )Note 1
40.0 50 60.0 k-503 devices( )Note 1
Resolution N 64 Taps No Missing Codes
Step Resistance RS — RAB / 63 — Note 6
Note 1: Resistance is defined as the resistance between terminal A to terminal B.
2: INL and DNL are measured at V
W with VA
= VDD and VB = 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.
9: This parameter is not tested, but specified by characterization.
Device
Resistance
Current at Voltage Comments
5.5V 2.7V
2.1 k2.25 mA 1.1 mA MCP4022 includes V
WZSE
MCP4024 includes VWFSE
5 k1.4 mA 450 µA
10 k450 µA 210 µA
50 k90 µA 40 µA

Produkt Specifikationer

Mærke: Microchip
Kategori: Ikke kategoriseret
Model: MCP4021

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