MCP4706 Datasheet, PDF (1/86 Pages) Microchip Technology – 8-/10-/12-Bit Voltage Output Digital-to-Analog Converter with EEPROM and I2C Interface

MCP4706/4716/4726
8-/10-/12-Bit Voltage Output Digital-to-Analog Converter
with EEPROM and I²C Interface
Features
• Output Voltage Resolutions
- 12-bit: MCP4726
- 10-bit: MCP4716
- 8-bit: MCP4706
• Rail-to-Rail Output
• Fast Settling Time of 6 µs (typical)
• DAC Voltage Reference Options
- V_DD
- V_REF Pin
• Output Gain Options
- Unity (1x)
- 2x, only when V_REF pin is used as voltage
source
• Nonvolatile Memory (EEPROM)
- Auto Recall of Saved DAC register setting
- Auto Recall of Saved Device Configuration
(Voltage Reference, Gain, Power Down)
• Power-Down Modes
- Disconnects output buffer
- Selection of V_OUT pull-down resistors
(640 kΩ, 125 kΩ, or 1 kΩ)
• Low Power Consumption
- Normal Operation: 210 µA typ.
- Power Down Operation: 60 nA typ.
(PD1:PD0 = “11”)
• Single-Supply Operation: 2.7V to 5.5V
• I²C™ Interface:
- Eight Available Addresses
- Standard (100 kbps), Fast (400 kbps), and
High-Speed (3.4 Mbps) Modes
• Small 6-lead SOT-23 and DFN (2x2) Packages
• Extended Temperature Range: -40°C to +125°C
Applications
• Set Point or Offset Trimming
• Sensor Calibration
• Low Power Portable Instrumentation
• PC Peripherals
• Data AcquisitionSystems
• Motor Control
Package Types
MCP4706 / 16 / 26
V_{OUT 1}
V_SS 2
V_DD 3
6 ^VREF V_REF 1
6 V_OUT
5 SCL ^{SCL 2}
EP
7
5 V_SS
4 _SDA ^{SDA 3}
4 _VDD
SOT-23-6
2x2 DFN-6*
* Includes Exposed Thermal Pad (EP); see Table 3-1.
Description
The MCP4706/4716/4726 are single channel 8-bit,
10-bit, and 12-bit buffered voltage output Digital-to-
Analog Converters (DAC) with nonvolatile memory and
an I²C Serial Interface. This family will also be referred
to as MCP47X6.
The V_REF pin or the device V_DD can be selected as the
DAC’s reference voltage. When V_DD is selected, V_DD is
connected internally to the DAC reference circuit.
When the V_REF pin is used, the user can select the
output buffer’s gain to 1 or 2. When the gain is 2, the
V_REF pin voltage should be limited to a maximum of
V_DD/2.
The DAC Register value and configuration bits can be
programmed to nonvolatile memory (EEPROM). The
nonvolatile memory holds the DAC Register and
configuration bit values when the device is powered off.
A device reset (such as a Power On Reset) latches
these stored values into the volatile memory.
Power-down modes enable system current reduction
when the DAC output voltage is not required. The V_OUT
pin can be configured to present a low, medium, or high
resistance load.
These devices have a two-wire I²C™ compatible serial
interface for standard (100 kHz), fast (400 kHz), or high
speed (3.4 MHz) mode.
These devices are available in small 6-pin SOT-23 and
DFN 2x2 mm packages.
© 2011 Microchip Technology Inc.
DS22272A-page 1