MCP4725A0T

Part: MCP4725

Type: 12-Bit Digital-to-Analog Converter with EEPROM Memory

Description: Single-channel, 12-bit buffered voltage output DAC with integrated nonvolatile EEPROM memory and rail-to-rail output operating over a 2.7 V to 5.5 V supply range.

Operating Conditions:

• Supply voltage: 2.7 to 5.5 V
• Operating temperature: -40 to +125 °C

Absolute Maximum Ratings:

• Max supply voltage: 6.5 V
• Max continuous current: ±50 mA (Current at Supply Pins)
• Max junction/storage temperature: +150 °C

Key Specs:

• Resolution: 12 Bits
• DNL: ±0.2 LSB typ, -0.75 to +0.75 LSB max (Test Code Range: 100 to 4000)
• INL Error: ±2 LSB typ, ±14.5 LSB max (Test Code Range: 100 to 4000)
• Supply Current: 210 μA typ, 400 μA max (unloaded, Code = 000h)
• Power-Down Current: 0.06 μA typ, 2.0 μA max (VDD = 5.5 V)
• Output Voltage Settling Time: 6 μs typ (1/4 to 3/4 full scale range)
• Slew Rate: 0.55 V/μs typ
• Short Circuit Current: 15 mA typ, 24 mA max (VDD = 5 V, VOUT = Grounded)
• EEPROM Write Time: 25 ms typ, 50 ms max

Features:

• On-board nonvolatile memory (EEPROM) for DAC code and configuration retention
• Rail-to-rail analog output swing
• Normal or selectable power-down modes (1 kΩ, 100 kΩ, or 500 kΩ pull-down)
• External A0 address selection pin
• Power-on Reset (POR) circuit and on-board charge pump for EEPROM programming
• 2-wire I2C interface supporting Standard (100 kbps), Fast (400 kbps), and High-Speed (3.4 Mbps) modes

Applications:

• Set Point or Offset Trimming
• Sensor Calibration
• Closed-Loop Servo Control
• Low Power Portable Instrumentation
• PC Peripherals
• Data Acquisition Systems

Package:

• 6-Lead SOT-23
• 6-Lead DFN

• 12-Bit Resolution
• On-Board Nonvolatile Memory (EEPROM)
• ±0.2 LSB DNL (typical)
• External A0 Address Pin
• Normal or Power-Down Mode
• Fast Settling Time: 6 μs (typical)
• External Voltage Reference (V DD )
• Rail-to-Rail Output
• Low Power Consumption
• Single-Supply Operation: 2.7V to 5.5V
• I 2 C Interface:
• -Eight Available Addresses
• -Standard (100 kbps), Fast (400 kbps), and High-Speed (3.4 Mbps) Modes
• Small 6-Lead SOT-23 and DFN Package Options
• Extended Temperature Range: -40°C to +125°C

• Set Point or Offset Trimming
• Sensor Calibration
• Closed-Loop Servo Control
• Low Power Portable Instrumentation
• PC Peripherals
• Data Acquisition Systems

The descriptions of the pins are listed in Table 3-1.

TABLE 3-1: PIN FUNCTION TABLE

Note 1: The DFN package has a contact on the bottom of the package. This contact is conductively connected to the die substrate, and therefore should be unconnected or connected to the same ground as the device's VSS pin.

Note

• 1: Test Code Range: 100 to 4000.
• 2: This parameter is ensured by design and not 100% tested.
• 3: Within 1/2 LSB of the final value when code changes from 1/4 to 3/4 (400h to C00h) of full scale range.
• 4: Logic state of external address selection pin (A0 pin).

† Notice: Stresses above those listed under 'Absolute Maximum ratings' may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability

The MCP4725 device is one of Microchip's latest DAC device family with nonvolatile EEPROM memory. The device is a general purpose resistive string DAC intended to be used in applications where a precision, and low power DAC with moderate bandwidth is required.

Since the device includes nonvolatile EEPROM memory, the user can use this device for applications that require the output to return to the previous set-up value on subsequent power-ups.

Applications generally suited for the MCP4725 device family include:

• Set Point or Offset Trimming
• Sensor Calibration
• Portable Instrumentation (Battery Powered)
• Motor Speed Control