MCP40D17/18/19
7-Bit Single I
2
C™ (with Command Code) Digital POT
with Volatile Memory in SC70
Features
• Potentiometer or Rheostat configuration options
• 7-bit: Resistor Network Resolution
- 127 Resistors (128 Steps)
• Zero Scale to Full Scale Wiper operation
• R
AB
Resistances: 5 kΩ, 10 kΩ, 50 kΩ, or 100 kΩ
• Low Wiper Resistance: 100Ω (typical)
• Low Tempco:
- Absolute (Rheostat): 50 ppm typical
(0°C to 70°C)
- Ratiometric (Potentiometer): 15 ppm typical
• I
2
C Protocol
- Supports SMBus 2.0 Write Byte/Word
Protocol Formats
- Supports SMBus 2.0 Read Byte/Word
Protocol Formats
• Standard I
2
C Device Addresses:
- All devices offered with address “0101110”
- MCP40D18 also offered with address
“0111110”
• Brown-out reset protection (1.5V typical)
• Power-on Default Wiper Setting (Mid-scale)
• Low-Power Operation:
- 2.5 µA Static Current (typical)
• Wide Operating Voltage Range:
- 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)
• Very small package (SC70)
• Lead free (Pb-free) package
Package Types
Potentiometer
MCP40D18
SC70-6
V
DD
1
V
SS
2
SCL 3
B
A
W
6 A
5 W
4 SDA
V
DD
1
V
SS
2
SCL 3
A
Rheostat
MCP40D17
SC70-6
W
B
6 W
5 B
4 SDA
MCP40D19
SC70-5
V
DD
1
V
SS
2
SCL 3
B
W
A
5 W
4 SDA
Applications
• PC Servers (I
2
C Protocol with Command Code)
• Amplifier Gain Control and Offset Adjustment
• Sensor Calibration (Pressure, Temperature,
Position, Optical and Chemical)
• Set point or offset trimming
• Cost-sensitive mechanical trim pot replacement
• RF Amplifier Biasing
• LCD Brightnes and Contract Adjustment
Device Features
# of Steps
Control
Interface
Memory
Type
Resistance (typical)
Wiper
(Ω)
75
75
75
V
DD
Operating
Range
( 1)
1.8V to 5.5V
1.8V to 5.5V
1.8V to 5.5V
Device
MCP40D17
MCP40D18
MCP40D19
Note 1:
Wiper
Configuration
Rheostat
Potentiometer
Rheostat
Options (kΩ)
5.0, 10.0, 50.0, 100.0
5.0, 10.0, 50.0, 100.0
5.0, 10.0, 50.0, 100.0
Package
SC70-6
SC70-6
SC70-5
I
2
C
I
2
C
I
2
C
128
128
128
RAM
RAM
RAM
Analog characteristics only tested from 2.7V to 5.5V
©
2009 Microchip Technology Inc.
DS22152B-page 1
MCP40D17/18/19
Device Block Diagram
V
DD
V
SS
Power-up/
Brown-out
Control
I C Serial
Interface
Module,
Control
Logic, &
Memory
2
A
(2)
W
SCL
SDA
Resistor
Network 0
(Pot 0)
Note 1
B
(1, 2)
Note 1:
Some configurations will have this
signal internally connected to
ground.
2:
In some configurations, this signal
may not be connected externally
(internally floating or grounded).
Comparison of Similar Microchip Devices
( 1)
# of Steps
Resistance (typical)
Memory
Type
Wiper
Configuration
Rheostat
Rheostat
Rheostat
Rheostat
Rheostat
Rheostat
Rheostat
Rheostat
Rheostat
Rheostat
Rheostat
Rheostat
Potentiometer
Potentiometer
Potentiometer
Potentiometer
Rheostat
Rheostat
Rheostat
Rheostat
V
DD
Operating
Range
1.8V to 5.5V
1.8V to 5.5V
1.8V to 5.5V
2.7V to 5.5V
1.8V to 5.5V
2.7V to 5.5V
1.8V to 5.5V
2.7V to 5.5V
1.8V to 5.5V
2.7V to 5.5V
1.8V to 5.5V
2.7V to 5.5V
1.8V to 5.5V
1.8V to 5.5V
1.8V to 5.5V
2.7V to 5.5V
1.8V to 5.5V
1.8V to 5.5V
1.8V to 5.5V
2.7V to 5.5V
HV
Interface
WiperLock
Technology
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Yes
Yes
No
No
Yes
Yes
No
No
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
No
No
Yes
No
No
No
Yes
SC70-6
SC70-6
SOT-23-6
SOT-23-6
SC70-5
SC70-5
SOT-23-5
SOT-23-5
MSOP-8,
DFN-8
Control
Interface
Device
MCP40D17
( 2)
MCP4017
( 2, 4)
MCP4012
( 2)
MCP4022
( 2)
MCP4132
( 3)
MCP4142
( 3)
MCP4152
( 3)
MCP4162
MCP4532
( 3)
( 3)
Options (kΩ)
5.0, 10.0, 50.0, 100.0
5.0, 10.0, 50.0, 100.0
2.1, 5.0, 10.0, 50.0
2.1, 5.0, 10.0, 50.0
5.0, 10.0, 50.0, 100.0
5.0, 10.0, 50.0, 100.0
5.0, 10.0, 50.0, 100.0
5.0, 10.0, 50.0, 100.0
5.0, 10.0, 50.0, 100.0
5.0, 10.0, 50.0, 100.0
5.0, 10.0, 50.0, 100.0
5.0, 10.0, 50.0, 100.0
5.0, 10.0, 50.0, 100.0
5.0, 10.0, 50.0, 100.0
2.1, 5.0, 10.0, 50.0
2.1, 5.0, 10.0, 50.0
5.0, 10.0, 50.0, 100.0
5.0, 10.0, 50.0, 100.0
2.1, 5.0, 10.0, 50.0
2.1, 5.0, 10.0, 50.0
Package
SC70-6
SC70-6
SOT-23-6
SOT-23-6
PDIP-8,
SOIC-8,
MSOP-8,
DFN-8
I
2
C
I
2
C
U/D
U/D
SPI
SPI
SPI
SPI
I
2
C
I
2
C
I
2
C
I
2
C
I
2
C
I
2
C
U/D
U/D
I
2
C
I
2
C
U/D
U/D
128
128
64
64
129
129
257
257
129
129
257
257
128
128
64
64
128
128
64
64
RAM
RAM
RAM
EE
RAM
EE
RAM
EE
RAM
EE
RAM
EE
RAM
RAM
RAM
EE
RAM
RAM
RAM
EE
MCP4542
( 3)
MCP4552
( 3)
MCP4562
( 3)
MCP40D18
( 2)
MCP4018
( 2, 4)
MCP4013
MCP4023
( 2)
( 2)
( 2)
MCP40D19
MCP4019
( 2, 4)
MCP4014
( 2)
MCP4024
( 2)
Note 1:
2:
3:
4:
This table is broken into three groups by a thick line (and color coding). The unshaded devices in this table
are the devices described in this data sheet, while the shaded devices offer a comparable resistor network
configuration.
Analog characteristics only tested from 2.7V to 5.5V.
Analog characteristics only tested from 3.0V to 5.5V.
These devices have a simplified I
2
C command format, which allows higher data throughput.
DS22152B-page 2
©
2009 Microchip Technology Inc.
MCP40D17/18/19
1.0
ELECTRICAL
CHARACTERISTICS
† 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.
Absolute Maximum Ratings †
Voltage on V
DD
with respect to V
SS
..... -0.6V to +7.0V
Voltage on SCL, and SDA with respect to V
SS
.............................................................................
-0.6V to 12.5V
Voltage on all other pins (A, W, and B)
with respect to V
SS ............................
-0.3V to V
DD
+ 0.3V
Input clamp current, I
IK
(V
I
< 0, V
I
> V
DD
, V
I
> V
PP ON
HV pins) ........... ±20 mA
Output clamp current, I
OK
(V
O
< 0 or V
O
> V
DD
) ....................................... ±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 V
SS
pin ...................... 100 mA
Maximum current into V
DD
pin ......................... 100 mA
Maximum current into A, W and B pins........... ±2.5 mA
Package power dissipation (T
A
= +50°C, T
J
= +150°C)
SC70-5 ............................................................ 302 mW
SC70-6 ............................................................ 483 mW
Storage temperature .......................... -65°C to +150°C
Ambient temperature with power applied
........................................................... -40°C to +125°C
ESD protection on all pins
........................≥
4 kV (HBM)
........................................................................≥
400V (MM)
Maximum Junction Temperature (T
J
) .............. +150°C
©
2009 Microchip Technology Inc.
DS22152B-page 3
MCP40D17/18/19
AC/DC CHARACTERISTICS
Standard Operating Conditions (unless otherwise specified)
Operating Temperature
–40°C
≤
T
A
≤
+125°C (extended)
DC Characteristics
All parameters apply across the specified operating ranges unless noted.
V
DD
= +2.7V to 5.5V, 5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ devices.
Typical specifications represent values for V
DD
= 5.5V, T
A
= +25°C.
Sym
V
DD
V
BOR
Min
2.7
1.8
V
DD
Start Voltage
to ensure Wiper
Reset
V
DD
Rise Rate to
ensure Power-on
Reset
Delay after device
exits the reset
state
(V
DD
> V
BOR
)
Supply Current
(Note 8)
—
Typ
—
—
—
Max
5.5
5.5
1.65
Units
V
V
V
Conditions
Analog Characteristics specified
Digital Characteristics specified
RAM retention voltage (V
RAM
) < V
BOR
Parameters
Supply Voltage
V
DDRR
(Note
7)
V/ms
T
BORD
—
10
20
µS
I
DD
—
45
80
µA
Serial Interface Active,
Write all 0’s to Volatile Wiper
V
DD
= 5.5V, F
SCL
= 400 kHz
Serial Interface Inactive,
(Stop condition, SCL = SDA = V
IH
),
Wiper = 0, V
DD
= 5.5V
—
2.5
5
µA
Note 1:
2:
3:
4:
5:
6:
7:
8:
Resistance is defined as the resistance between terminal A to terminal B.
INL and DNL are measured at V
W
with V
A
= V
DD
and V
B
= V
SS
.
MCP40D18
device only, includes V
WZSE
and V
WFSE
.
Resistor terminals A, W and B’s polarity with respect to each other is not restricted.
This specification by design.
Non-linearity is affected by wiper resistance (R
W
), which changes significantly over voltage and
temperature.
POR/BOR is not rate dependent.
Supply current is independent of current through the resistor network
DS22152B-page 4
©
2009 Microchip Technology Inc.
MCP40D17/18/19
AC/DC CHARACTERISTICS (CONTINUED)
Standard Operating Conditions (unless otherwise specified)
Operating Temperature
–40°C
≤
T
A
≤
+125°C (extended)
DC Characteristics
All parameters apply across the specified operating ranges unless noted.
V
DD
= +2.7V to 5.5V, 5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ devices.
Typical specifications represent values for V
DD
= 5.5V, T
A
= +25°C.
Sym
R
AB
Min
4.0
8.0
40.0
80.0
Resolution
Step Resistance
Wiper Resistance
Nominal
Resistance
Tempco
Ratiometeric
Tempco
Resistor Terminal
Input Voltage
Range (Terminals
A, B and W)
Maximum current
through Terminal
(A, W or B)
Note 5
N
R
S
R
W
ΔR
AB
/ΔT
—
—
—
—
—
—
ΔV
WB
/ΔT
V
A,
V
W,
V
B
—
Vss
Typ
5
10
50
100
128
R
AB
/
(127)
100
155
50
100
150
15
—
—
170
325
—
—
—
—
V
DD
Max
6.0
12.0
60.0
120.0
Units
kΩ
kΩ
kΩ
kΩ
Taps
Ω
Ω
Ω
Conditions
-502 devices
(Note 1)
-103 devices
(Note 1)
-503 devices
(Note 1)
-104 devices
(Note 1)
No Missing Codes
Note 5
V
DD
= 5.5 V, I
W
= 2.0 mA, code = 00h
V
DD
= 2.7 V, I
W
= 2.0 mA, code = 00h
Parameters
Resistance
(± 20%)
ppm/°C T
A
= -20°C to +70°C
ppm/°C T
A
= -40°C to +85°C
ppm/°C T
A
= -40°C to +125°C
ppm/°C Code = Midscale (3Fh)
V
Note 4, Note 5
I
T
—
—
—
—
—
—
—
—
—
—
—
—
—
—
2.5
2.5
2.5
1.38
0.688
0.138
0.069
mA
mA
mA
mA
mA
mA
mA
Terminal A
Terminal B
Terminal W
I
AW
, W = Full Scale (FS)
I
BW
, W = Zero Scale (ZS)
I
AW
or I
BW
, W = FS or ZS
I
AB
, V
B
= 0V, V
A
= 5.5V,
R
AB(MIN)
= 4000
Terminal A
and
Terminal B
I
AB
, V
B
= 0V, V
A
= 5.5V,
R
AB(MIN)
= 8000
I
AB
, V
B
= 0V, V
A
= 5.5V,
R
AB(MIN)
= 40000
I
AB
, V
B
= 0V, V
A
= 5.5V,
R
AB(MIN)
= 80000
Note 1:
2:
3:
4:
5:
6:
7:
8:
Resistance is defined as the resistance between terminal A to terminal B.
INL and DNL are measured at V
W
with V
A
= V
DD
and V
B
= V
SS
.
MCP40D18
device only, includes V
WZSE
and V
WFSE
.
Resistor terminals A, W and B’s polarity with respect to each other is not restricted.
This specification by design.
Non-linearity is affected by wiper resistance (R
W
), which changes significantly over voltage and
temperature.
POR/BOR is not rate dependent.
Supply current is independent of current through the resistor network
©
2009 Microchip Technology Inc.
DS22152B-page 5
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