MCP41HVX1 Datasheet, PDF (1/90 Pages) Microchip Technology – 7/8-Bit Single, +36V (±18V) Digital POT with SPI Serial Interface and Volatile Memory

MCP41HVX1
7/8-Bit Single, +36V (±18V) Digital POT
with SPI Serial Interface and Volatile Memory
Features
• High-Voltage Analog Support:
- +36V Terminal Voltage Range (DGND = V-)
- ±18V Terminal Voltage Range
(DGND = V- + 18V)
• Wide Operating Voltage:
- Analog: 10V to 36V (specified performance)
- Digital: 2.7V to 5.5V
1.8V to 5.5V (DGND  V- + 0.9V)
• Single Resistor Network
• Potentiometer Configuration Options
• Resistor Network Resolution
- 7-bit: 127 Resistors (128 Taps)
- 8-bit: 255 Resistors (256 Taps)
• R_AB Resistance Options:
- 5 k
10 k
- 50 k
100 k
• High Terminal/Wiper Current (I_W) Support:
- 25 mA (for 5 k)
- 12.5 mA (for 10 k)
- 6.5 mA (for 50 k and 100 k)
• Zero-Scale to Full-Scale Wiper Operation
• Low Wiper Resistance: 75  (Typical)
• Low Tempco:
- Absolute (Rheostat): 50 ppm Typical
(0°C to +70°C)
- Ratiometric (Potentiometer): 15 ppm Typical
• SPI Serial Interface
(10 MHz, Modes 0,0 and 1,1)
• Resistor Network Terminal Disconnect Via:
- Shutdown Pin (SHDN)
- Terminal Control (TCON) Register
• Write Latch (WLAT) Pin to control update of
Volatile Wiper Register (such as Zero Crossing)
• Power-On Reset / Brown-Out Reset for both:
- Digital Supply (V_L/DGND); 1.5V Typical
- Analog Supply (V+ / V-); 3.5V Typical
• Serial Interface Inactive Current (3 µA Typical)
• 500 kHz Typical Bandwidth (-3 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)
MCP41HVX1 Single Potentiometer
TSSOP (ST)
V_L 1
SCK 2
CS 3
SDI ⁴
SDO 5
WLAT 6
SHDN 7
14 V+
13 P0A
12 P0W
11 P0B
10 V-
9 DGND
8 NC ⁽²⁾
5x5 QFN (MQ)
V_L 1 ^{20 19 18 17 16 15 P0A}
SCK 2
14 P0W
CS 3
21 EP⁽¹⁾
13 P0B
SDI ₄
12 V-
SDO 5
11 DGND
6 7 8 9 10
Note 1: Exposed Pad (EP)
2: NC = Not Internally Connected
Description
The MCP41HVX1 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 effect 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).
 2013 Microchip Technology Inc.
DS20005207A-page 1