MCP4725

Part: MCP4725 — Microchip Technology

Type: 12-Bit Digital-to-Analog Converter (DAC) with EEPROM

Description: Single-channel, 12-bit buffered voltage-output DAC with non-volatile EEPROM, 2.7–5.5 V single supply, I²C interface (up to 3.4 Mbps), 6 μs typical settling time, in a 6-lead SOT-23 package.

Operating Conditions:

• Supply voltage: 2.7–5.5 V
• Operating temperature: -40 to +125 °C
• Reference: VDD used directly as DAC reference; rail-to-rail output (VSS to VDD)
• I²C modes: Standard (100 kbps), Fast (400 kbps), High-Speed (3.4 Mbps)

Absolute Maximum Ratings:

• Max supply voltage (VDD): 6.5 V
• Voltage on all inputs and outputs w.r.t. VSS: -0.3 V to VDD + 0.3 V
• Current at input pins: ±2 mA
• Current at supply pins: ±50 mA
• Current at output pins: ±25 mA
• Storage temperature: -65 to +150 °C
• Ambient temperature with power applied: -55 to +125 °C
• Max junction temperature: +150 °C
• ESD protection on all pins: ≥ 6 kV HBM, ≥ 400 V MM

Key Specs:

• Resolution: 12 bits
• Supply current (IDD): 210 μA typ, 400 μA max (digital inputs grounded, VOUT unloaded, code 000h)
• Power-down current (IDDP): 0.06 μA typ, 2.0 μA max (VDD = 5.5 V)
• INL: ±2 LSB typ, ±14.5 LSB max (code range 100–4000)
• DNL: ±0.2 LSB typ, ±0.75 LSB max
• Offset error: 0.02 % FSR typ, 0.75 % FSR max (code = 000h)
• Gain error: -0.1 % FSR typ, ±2 % FSR max (code = FFFh)
• Settling time: 6 μs typ (within 1/2 LSB, 400h to C00h); slew rate 0.55 V/μs
• Short-circuit current: 15 mA typ, 24 mA max (VDD = 5 V)
• Output impedance: 1 Ω normal mode; 1 kΩ / 100 kΩ / 500 kΩ in power-down modes 1/2/3
• EEPROM: write time 25 ms typ (50 ms max); data retention 200 years typ; endurance 1 million cycles (at +25 °C)
• Power-on-reset threshold: 2 V typ
• Thermal resistance (6L SOT-23), θJA: 190.5 °C/W

Features:

• 12-bit resolution with on-board non-volatile memory (EEPROM)
• Rail-to-rail buffered output
• External A0 address pin (eight available I²C addresses)
• Normal or power-down mode with selectable output load
• Power-on-reset circuit and on-board EEPROM charge pump
• DAC output available immediately after power-up from stored EEPROM value
• Extended temperature range: -40 to +125 °C

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

• 12-Bit Resolution
• On-Board Non-Volatile 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 TM Interface:
• -Eight Available Addresses
• -Standard (100 kbps), Fast (400 kbps), and High-Speed (3.4 Mbps) Modes
• Small 6-lead SOT-23 Package
• 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: Test Code Range: 100 to 4000.
• 2: This parameter is ensure 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 '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 non-volatile 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 non-volatile 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