• Serial Interface Inactive Current (3 µA typical)
• 500 kHz Typical Bandwidth (-4 dB) Operation
(5.0 k Device)
• Extended Temperature Range (-40°C to +125°C)
• Package Types: TSSOP-14 and QFN-20 (5x5)
Package Types (Top View)
MCP45HVX1 Single Potentiometer
TSSOP (ST)
V
L
SCL
A1
SDA
A0
WLAT
NC
1
2
3
4
5
6
7
14
13
12
11
10
9
8
V+
PA0
PW0
PB0
V—
DGND
SHDN
QFN 5x5 (MQ)
NC
(2)
NC
(2)
NC
(2)
NC
(2)
V+
15
13
12
11
6
WLAT
7
SHDN
8
NC
(2)
9 10
NC
(2)
NC
(2)
20 19 18 17 16
V
L
SCL
A1
SDA
A0
1
2
3
4
5
P0A
P0B
V-
DGND
14 P0W
21 EP
(1)
Note 1:
Exposed Pad (EP)
2:
NC = Not Internally Connected
Description:
The MCP45HVX1 family of devices have dual power
rails (analog and digital). The analog power rail allows
high voltage on the resistor network terminal pins. The
analog voltage range is determined by the V+ and V–
voltages. The maximum analog voltage is +36V, while
the operating analog output minimum specifications
are specified from either 10V or 20V. As the analog
supply voltage becomes smaller, the analog switch
resistances increase, which affect certain performance
specifications. The system can be implemented as dual
rail (±18V) relative to the digital logic ground (DGND).
The device also has a Write Latch (WLAT) function,
which will inhibit the volatile Wiper register from being
updated (latched) with the received data, until the
WLAT pin is Low. This allows the application to specify
a condition where the volatile Wiper register is updated
(such as zero crossing).
2014 Microchip Technology Inc.
DS20005304A-page 1
MCP45HVX1
Device Block Diagram
V+ V–
V
L
DGND
SCL
SDA
A0
A1
WLAT
SHDN
Power-Up/
Brown-Out
Control
(Digital)
I
2
C™ Serial
Interface
Module and
Control
Logic
Power-Up/
Brown-Out
Control
(Analog)
Resistor
Network 0
(Pot 0)
Wiper 0
and TCON
Register
P0A
P0W
Memory (2x8)
Wiper0 (V)
TCON
P0B
Device Features
POR Wiper
Setting
# of POTs
Control
Interface
Resistance (Typical)
R
AB
Options Wiper -
(k)
R
W
()
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
75
75
75
75
Number
of:
Taps
R
S
Specified Operating
Range
V
L
(2)
1.8V to
5.5V
1.8V to
5.5V
1.8V to
5.5V
1.8V to
5.5V
V+
(3)
10V
(4)
to 36V
10V
(4)
to 36V
10V
(4)
to 36V
10V
(4)
to 36V
Device
Wiper
Configuration
MCP45HV31
MCP45HV51
MCP41HV31
(5)
1 Potentiometer
(1)
I
2
C™
1 Potentiometer
(1)
1 Potentiometer
I
2
C
SPI
SPI
3Fh
7Fh
3Fh
7Fh
127 128
255 256
127 128
255 256
MCP41HV51
(5)
1 Potentiometer
(5)
Note 1:
2:
3:
4:
5:
Floating either terminal (A or B) allows the device to be used as a Rheostat (variable resistor).
This is relative to the DGND signal. There is a separate requirement for the V+/V- voltages.
V
L
V- + 2.7V.
Relative to V-, the V
L
and DGND signals must be between (inclusive) V- and V+.
Analog operation will continue while the V+ voltage is above the device’s analog Power-On Reset (POR)/
Brown-out Reset (BOR) voltage. Operational characteristics may exceed specified limits while the V+
voltage is below the specified minimum voltage.
For additional information on these devices, refer to DS20005207.
DS20005304A-page 2
2014 Microchip Technology Inc.
MCP45HVX1
1.0
ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings †
Voltage on V- with respect to DGND ......................................................................................... DGND + 0.6V to -40.0V
Voltage on V+ with respect to DGND ........................................................................................... DGND - 0.3V to 40.0V
Voltage on V+ with respect to V- .................................................................................................. DGND - 0.3V to 40.0V
Voltage on V
L
with respect to V+ ............................................................................................................ -0.6V to -40.0V
Voltage on V
L
with respect to V- ............................................................................................................. -0.6V to +40.0V
Voltage on V
L
with respect to DGND ....................................................................................................... -0.6V to +7.0V
Voltage on SCL, SDA, A0, A1, WLAT, and SHDN with respect to DGND .......................................... -0.6V to V
L
+ 0.6V
Voltage on all other pins (PxA, PxW, and PxB) with respect to V- ......................................................-0.3V to V+ + 0.3V
Input clamp current, I
IK
(V
I
< 0, V
I
> V
L
, V
I
> V
PP
on HV pins) ............................................................................ ±20 mA
Output clamp current, I
OK
(V
O
< 0 or V
O
> V
L
) ................................................................................................... ±20 mA
Maximum current out of DGND pin ...................................................................................................................... 100 mA
Maximum current into V
L
pin................................................................................................................................ 100 mA
Maximum current out of V- pin ............................................................................................................................. 100 mA
Maximum current into V+ pin ................................................................................................................................100 mA
Maximum current into P
X
A, P
X
W, and P
X
B pins (Continuous)
R
AB
= 5 k ............................................................................................................................. ±25 mA
R
AB
= 10 k ........................................................................................................................ ±12.5 mA
R
AB
= 50 k .......................................................................................................................... ±6.5 mA
R
AB
= 100 k ........................................................................................................................ ±6.5 mA
Maximum current into P
X
A, P
X
W, and P
X
B pins (Pulsed)
F
PULSE
> 10 kHz ......................................................................................................... (Max I
Continuous
) / (Duty Cycle)
F
PULSE
10 kHz ...................................................................................................... (Max I
Continuous
) /
(Duty
Cycle)
Maximum output current sunk by any Output pin .................................................................................................. 25 mA
Maximum output current sourced by any Output pin ............................................................................................ 25 mA
QFN-20 (5 x 5) ...................................................................................................................................... 2800 mW
Soldering temperature of leads (10 seconds) ..................................................................................................... +300°C
ESD protection on all pins
Human Body Model (HBM) ......................................................................................................................
Storage temperature ............................................................................................................................. -65°C to +150°C
Ambient temperature with power applied .............................................................................................. -40°C to +125°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.
2014 Microchip Technology Inc.
DS20005304A-page 3
MCP45HVX1
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+ = 10V to 36V (referenced to V-);
V+ = +5V to +18V and V- = -5.0V to -18V (referenced to DGND -> ±5V to ±18V),
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