MCP4441 Datasheet PDF - Microchip Technology


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MCP4441
Microchip Technology

Part Number MCP4441
Description 7/8-Bit Quad I2C Digital POT
Page 30 Pages

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MCP444X/446X
7/8-Bit Quad I2C Digital POT with
Nonvolatile Memory
Features
• Quad Resistor Network
• Potentiometer or Rheostat configuration options
• Resistor Network Resolution
- 7-bit: 128 Resistors (129 Taps)
- 8-bit: 256 Resistors (257 Taps)
• RAB Resistances options of:
- 5 kΩ
- 10 kΩ
- 50 kΩ
- 100 kΩ
• Zero Scale to Full Scale Wiper operation
• Low Wiper Resistance: 75 Ω (typical)
• Low Tempco:
- Absolute (Rheostat): 50 ppm typical
(0°C to 70°C)
- Ratiometric (Potentiometer): 15 ppm typical
• Nonvolatile Memory
- Automatic Recall of Saved Wiper Setting
- WiperLock™ Technology
- 5 General Purpose Memory Locations
• I2C Serial Interface
- 100 kHz, 400 kHz, and 3.4 MHz support
• Serial protocol allows:
- High-Speed Read/Write to wiper
- Read/Write to EEPROM
- Write Protect to be enabled/disable
- WiperLock to be enabled/disabled
• Resistor Network Terminal Disconnect Feature
via Terminal Control (TCON) Register
• Reset input pin
• Write Protect Feature:
- Hardware Write Protect (WP) Control pin
- Software Write Protect (WP) Configuration bit
• Brown-out reset protection (1.5V typical)
• Serial Interface Inactive current (2.5 uA typical)
• High-Voltage Tolerant Digital Inputs: Up to 12.5V
• Supports Split Rail Applications
• Internal weak pull-up on all digital inputs
(except SCL and SDA)
• Wide Operating Voltage:
- 2.7V to 5.5V - Device Characteristics
Specified
- 1.8V to 5.5V - Device Operation
• Wide Bandwidth (-3 dB) Operation:
- 2 MHz (typical) for 5.0 kΩ device
• Extended temperature range (-40°C to +125°C)
• Package Types: 4x4 QFN-20, TSSOP-20 and
TSSOP-14
Package Types (Top View)
MCP44X1 Quad Potentiometers
P3A
P3W
P3B
HVC/A0
SCL
SDA
VSS
P1B
P1W
P1A
1
2
3
4
5
6
7
8
9
10
20 P2A
19 P2W
18 P2B
17 VDD
16 A1
15 RESET
14 WP
12 P0B
12 P0W
11 P0A
TSSOP
P3B 1 20 19 18 17 16 15 VDD
HVC/A0 2
14 A1
SCL 3
SDA 4
EP
21
13 RESET
12 WP
VSS 5
11 P0B
6 7 8 9 10
4x4 QFN
MCP44X2 Quad Rheostat
P3W
P3B
HVC/A0
SCL
SDA
VSS
P1B
1 14
2 13
3 12
4 11
5 10
69
78
TSSOP
P2W
P2B
VDD
A1
P0B
P0W
P1W
© 2010 Microchip Technology Inc.
DS22265A-page 1



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MCP444X/446X
Device Block Diagram
VDD
VSS
A1
HVC/A0
SCL
SDA
WP
RESET
Power-up/
Brown-out
Control
I2C Serial
Interface
Module &
Control
Logic
(WiperLock™
Technology)
Memory (16x9)
Wiper0 (V & NV)
Wiper1 (V & NV)
Wiper2 (V & NV)
Wiper3 (V & NV)
TCON0
TCON1
STATUS
Data EEPROM
(5 x 9-bits)
Resistor
Network 0
(Pot 0)
Wiper 0
& TCON0
Register
Resistor
Network 1
(Pot 1)
Wiper 1
& TCON0
Register
Resistor
Network 2
(Pot 2)
Wiper 2
& TCON1
Register
Resistor
Network 3
(Pot 3)
Wiper 3
& TCON1
Register
P0A
P0W
P0B
P1A
P1W
P1B
P2A
P2W
P2B
P3A
P3W
P3B
Device Features
Device
Wiper
Configuration
Resistance (typical)
RAB Options (kΩ)
Wiper
- RW
(Ω)
VDD
Operating
Range(2)
MCP4431(3) 4 Potentiometer (1) I2C RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 129 1.8V to 5.5V
MCP4432 (3) 4
Rheostat
I2C RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 129 1.8V to 5.5V
MCP4441 4 Potentiometer (1) I2C EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 129 2.7V to 5.5V
MCP4442 4
Rheostat
I2C EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 129 2.7V to 5.5V
MCP4451(3) 4 Potentiometer(1) I2C RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 257 1.8V to 5.5V
MCP4452(3) 4
Rheostat
I2C RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 257 1.8V to 5.5V
MCP4461 4 Potentiometer(1) I2C EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 257 2.7V to 5.5V
MCP4462 4
Rheostat
I2C EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 257 2.7V to 5.5V
Note 1:
2:
3:
Floating either terminal (A or B) allows the device to be used as a Rheostat (variable resistor).
Analog characteristics only tested from 2.7V to 5.5V unless otherwise noted.
Please check Microchip web site for device release and availability.
DS22265A-page 2
© 2010 Microchip Technology Inc.



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1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings †
Voltage on VDD with respect to VSS ................ -0.6V to +7.0V
Voltage on HVC/A0, A1, SCL, SDA, WP, and
RESET with respect to VSS ................................... -0.6V to 12.5V
Voltage on all other pins (PxA, PxW, and PxB)
with respect to VSS ......................................... -0.3V to VDD + 0.3V
Input clamp current, IIK
(VI < 0, VI > VDD, VI > VPP ON HV pins) ......................±20 mA
Output clamp current, IOK
(VO < 0 or VO > VDD) ..................................................±20 mA
Maximum output current sunk by any Output pin
......................................................................................25 mA
Maximum output current sourced by any Output pin ed
......................................................................................25 mA
Maximum current out of VSS pin .................................100 mA
Maximum current into VDD pin ....................................100 mA
Maximum current into PXA, PXW & PXB pins ............±2.5 mA
Storage temperature ....................................-65°C to +150°C
Ambient temperature with power applied
..................................................................... -40°C to +125°C
Package power dissipation (TA = +50°C, TJ = +150°C)
TSSOP-14....................................................... 1000 mW
TSSOP-20....................................................... 1110 mW
QFN-20 (4x4) .................................................. 2320 mW
Soldering temperature of leads (10 seconds) ............. +300°C
ESD protection on all pins ................................... ≥ 4 kV (HBM),
.......................................................................... 300V (MM)
Maximum Junction Temperature (TJ) ......................... +150°C
MCP444X/446X
† 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.
© 2010 Microchip Technology Inc.
DS22265A-page 3



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MCP444X/446X
AC/DC CHARACTERISTICS
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
Supply Voltage VDD 2.7 — 5.5 V
1.8 — 2.7 V Serial Interface only.
HVC/A0, SDA,
SCL, A1, WP,
RESET pin
Voltage Range
VHV
VSS
— 12.5V
V VDD The HVC/A0 pin will be at one
4.5V of three input levels
VSS
— VDD +
V VDD < (VIL, VIH or VIHH). (Note 6)
8.0V
4.5V
VDD Start Voltage
to ensure Wiper
Reset
VBOR
— 1.65
V RAM retention voltage (VRAM) < VBOR
VDD Rise Rate to
ensure Power-on
Reset
VDDRR
(Note 9)
V/ms
Delay after device
exits the reset
TBORD
— 10 20 µs
state
(VDD > VBOR)
Supply Current IDD — — 600 µA Serial Interface Active,
(Note 10)
HVC/A0 = VIH (or VIL) (Note 11)
Write all 0’s to volatile Wiper 0
VDD = 5.5V, FSCL @ 3.4 MHz
— — 250 µA Serial Interface Active,
HVC/A0 = VIH (or VIL) (Note 11)
Write all 0’s to volatile Wiper 0
VDD = 5.5V, FSCL @ 100 kHz
— — 575 µA EE Write Current (Write Cycle)
(Nonvolatile device only),
VDD = 5.5V, FSCL = 400 kHz,
Write all 0’s to Nonvolatile Wiper 0
SCL = VIL or VIH
— 2.5 5 µA Serial Interface Inactive,
(Stop condition, SCL = SDA = VIH),
Wiper = 0
VDD = 5.5V, HVC/A0 = VIH
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: MCP44X1 only.
4: MCP44X2 only, includes VWZSE and VWFSE.
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 (RW), which changes significantly over voltage and
temperature.
8: The MCP44X1 is externally connected to match the configurations of the MCP44X2, and then tested.
9: POR/BOR is not rate dependent.
10: Supply current is independent of current through the resistor network.
11: When HVC/A0 = VIHH, the IDD current is less due to current into the HVC/A0 pin. See IPU specification.
DS22265A-page 4
© 2010 Microchip Technology Inc.




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