MCP4432 Datasheet PDF - Microchip Technology


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MCP4432
Microchip Technology

Part Number MCP4432
Description 7/8-Bit Volatile Quad Digital POT
Page 30 Pages

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MCP443X/5X
7/8-Bit Volatile Quad Digital POT
with I2C Interface
Features
• Quad Resistor Network
• Potentiometer or Rheostat Configuration Options
• Resistor Network Resolution:
7-bit – 128 Resistors (129 Taps)
8-bit – 256 Resistors (257 Taps)
• Four RAB Resistances options:
5 k
10 k
50 k
100 k
• Zero-scale to Full-scale Wiper Operation
• Low Wiper Resistance – 75 typical
• Low Tempco:
Absolute (Rheostat) – 50 ppm typical (0°-70°C)
Ratiometric (Potentiometer) – 15 ppm typical
• I2C Serial Interface Support:
100 kHz
400 kHz
3.4 MHz
• Serial Protocol Allows High-Speed Read/Write to
Wiper
• Resistor Network Terminal Disconnect Feature
via Terminal Control (TCON) Register
• Reset Input Pin
• 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 kDevice
• Extended Temperature Range (-40°C to +125°C)
• Three Package Types:
4x4 QFN-20
TSSOP-20
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 NC
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 NC
VSS 5
11 P0B
6 7 8 9 10
4x4 QFN
MCP44X2 Quad Rheostat
P3W
P3B
HVC/A0
SCL
SDA
VSS
P1B
1
2
3
4
5
6
7
14 P2W
13 P2B
12
11
VDD
A1
10 P0B
9 P0W
8 P1W
TSSOP
2010 Microchip Technology Inc.
DS22267A-page 1



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MCP443X/5X
Device Block Diagram
VDD
VSS
A1
HVC/A0
SCL
SDA
Power-up/
Brown-out
Control
I2C Serial
Interface
Module &
Control
Logic
RESET
Memory (16x9)
Wiper0 (Vol)
Wiper1 (Vol)
Wiper2 (Vol)
Wiper3 (Vol)
TCON0
TCON1
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 (k)
Wiper
- RW
()
VDD
Operating
Range(2)
MCP4431 4 Potentiometer (1) I2C RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 129 1.8V to 5.5V
MCP4432 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 4 Potentiometer(1) I2C RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 257 1.8V to 5.5V
MCP4452 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: Floating either terminal (A or B) allows the device to be used as a Rheostat (variable resistor).
2: Analog characteristics only tested from 2.7V to 5.5V unless otherwise noted.
DS22267A-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, 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
........................................................................... 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
MCP443X/5X
† 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.
DS22267A-page 3



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MCP443X/5X
AC/DC CHARACTERISTICS
DC Characteristics
Parameters
Sym
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 k, 10 k, 50 k, 100 kdevices.
Typical specifications represent values for VDD = 5.5V, TA = +25°C.
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, 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
state
(VDD > VBOR)
TBORD
— 10 20 µs
Supply Current
(Note 10)
IDD
— — 600 µA Serial Interface Active,
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
— 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: Polarity of resistor terminals A, W and B, 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.
DS22267A-page 4
2010 Microchip Technology Inc.




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