MCP40D17 Datasheet, PDF (1/66 Pages) Microchip Technology – 7-Bit Single I2C™ (with Command Code) Digital POT with Volatile Memory in SC70

MCP40D17/18/19
7-Bit Single I²C™ (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
• I²C Protocol
- Supports SMBus 2.0 Write Byte/Word
Protocol Formats
- Supports SMBus 2.0 Read Byte/Word
Protocol Formats
• Standard I²C 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}
A
6A
V_{SS 2}
B
SCL ₃
5W
W
4 ^SDA
Rheostat
MCP40D17
SC70-6
V_{DD 1}
V_{SS 2} ^A
SCL ₃
W6W
B5 ^B
4 ^SDA
MCP40D19
SC70-5
V_{DD 1}
W
V_{SS 2}
B
SCL ₃
5W
A
4 ^SDA
Applications
• PC Servers (I²C 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
Resistance (typical)
Device
Wiper
Configuration
Options (kΩ)
MCP40D17
MCP40D18
MCP40D19
I²C 128 Rheostat
RAM
I²C 128 Potentiometer RAM
I²C 128 Rheostat
RAM
5.0, 10.0, 50.0, 100.0
5.0, 10.0, 50.0, 100.0
5.0, 10.0, 50.0, 100.0
Note 1: Analog characteristics only tested from 2.7V to 5.5V
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
Package
SC70-6
SC70-6
SC70-5
© 2009 Microchip Technology Inc.
DS22152B-page 1