MCP4725A0T-E/CHVAO

MCP4725 12-Bit Digital-to-Analog Converter with EEPROM Memory in SOT-23-6 Features DESCRIPTION • • • • • • • • • • • The MCP4725 is a low-power, high accuracy, single channel, 12-bit buffered voltage output Digital-toAnalog Convertor (DAC) with non-volatile memory (EEPROM). Its on-board precision output amplifier allows it to achieve rail-to-rail analog output swing. 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 (VDD) Rail-to-Rail Output Low Power Consumption Single-Supply Operation: 2.7V to 5.5V I2CTM 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 Applications • • • • • • Set Point or Offset Trimming Sensor Calibration Closed-Loop Servo Control Low Power Portable Instrumentation PC Peripherals Data Acquisition Systems The MCP4725 has a two-wire I2C™ compatible serial interface for standard (100 kHz), fast (400 kHz), or high speed (3.4 MHz) mode. Power-on Reset 2 I C Interface Logic Charge Pump Input Register DAC Register EEPROM Resistive String DAC VSS SDA Op Amp Power-down Control VDD SCL The device includes a Power-On-Reset (POR) circuit to ensure reliable power-up and an on-board charge pump for the EEPROM programming voltage. The DAC reference is driven from VDD directly. In powerdown mode, the output amplifier can be configured to present a known low, medium, or high resistance output load. The MCP4725 has an external A0 address bit selection pin. This A0 pin can be tied to VDD or VSS of the user’s application board. Block Diagram A0 The DAC input and configuration data can be programmed to the non-volatile memory (EEPROM) by the user using I2C interface command. The non-volatile memory feature enables the DAC device to hold the DAC input code during power-off time, and the DAC output is available immediately after power-up. This feature is very useful when the DAC device is used as a supporting device for other devices in the network. The MCP4725 is an ideal DAC device where design simplicity and small footprint is desired, and for applications requiring the DAC device settings to be saved during power-off time. The device is available in a small 6-pin SOT-23 package. Package Type SOT-23-6 VOUT 1 VSS 2 VDD 3 MCP4725 6 A0 5 SCL 4 SDA VOUT © 2009 Microchip Technology Inc. DS22039D-page 1 MCP4725 NOTES: DS22039D-page 2 © 2009 Microchip Technology Inc. MCP4725 1.0 ELECTRICAL CHARACTERISTICS † 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 Absolute Maximum Ratings† VDD...................................................................................6.5V All inputs and outputs w.r.t VSS .................–0.3V to VDD+0.3V Current at Input Pins ....................................................±2 mA Current at Supply Pins ...............................................±50 mA Current at Output Pins ...............................................±25 mA Storage Temperature ...................................-65°C to +150°C Ambient Temp. with Power Applied .............-55°C to +125°C ESD protection on all pins ................ ≥ 6 kV HBM, ≥ 400V MM Maximum Junction Temperature (TJ) ......................... +150°C ELECTRICAL CHARACTERISTICS Electrical Specifications: Unless otherwise indicated, all parameters apply at VDD = + 2.7V to 5.5V, VSS = 0V, RL = 5 kΩ from VOUT to VSS, CL = 100 pF, TA = -40°C to +125°C. Typical values are at +25°C. Parameter Sym Min Operating Voltage VDD 2.7 Supply Current IDD — Power-Down Current IDDP Power-On-Reset Threshold Voltage Typ Max Units Conditions 5.5 V 210 400 µA Digital input pins are grounded, Output pin (VOUT) is not connected (unloaded), Code = 000h — 0.06 2.0 µA VDD = 5.5V VPOR — 2 — V Power Requirements DC Accuracy Resolution n 12 — — Bits Code Range = 000h to FFFh INL Error INL — ±2 ±14.5 LSB Note 1 DNL DNL -0.75 Offset Error VOS ±0.2 ±0.75 LSB 0.02 0.75 % of FSR — ±1 — ppm/°C -45°C to +25°C — ±2 — ppm/°C +25°C to +85°C GE -2 -0.1 2 % of FSR ΔGE/°C — -3 — ppm/°C Phase Margin pM — 66 — Degree(°) Capacitive Load Stability CL — — 1000 pF Slew Rate SR — 0.55 — V/µs Short Circuit Current ISC — 15 24 mA VDD = 5V, VOUT = Grounded Output Voltage Settling Time TS — 6 — µs Note 3 Offset Error Drift ΔVOS/°C Gain Error Gain Error Drift Note 1 Code = 000h Code = FFFh, Offset error is not included. Output Amplifier Note 1: 2: 3: 4: CL = 400 pF, RL = ∞ RL = 5 kΩ, Note 2 Test Code Range: 100 to 4000. This parameter is ensure by design and not 100% tested. Within 1/2 LSB of the final value when code changes from 1/4 to 3/4 (400h to C00h) of full scale range. Logic state of external address selection pin (A0 pin). © 2009 Microchip Technology Inc. DS22039D-page 3 MCP4725 ELECTRICAL CHARACTERISTICS (CONTINUED) Electrical Specifications: Unless otherwise indicated, all parameters apply at VDD = + 2.7V to 5.5V, VSS = 0V, RL = 5 kΩ from VOUT to VSS, CL = 100 pF, TA = -40°C to +125°C. Typical values are at +25°C. Parameter Power Up Time Sym Typ Max Units Conditions — 2.5 — µs VDD = 5V — 5 — µs VDD = 3V Exit Power-down Mode, (Started from falling edge of ACK pulse) — 1 — Ω Normal mode (VOUT to VSS) — 1 — kΩ Power-Down Mode 1 (VOUT to VSS) — 100 — kΩ Power-Down Mode 2 (VOUT to VSS) — 500 — kΩ Power-Down Mode 3 (VOUT to VSS) 1 — — V/ms Validation only. Major Code Transition Glitch — 45 — nV-s 1 LSB change around major carry (from 800h to 7FFh) (Note 2) Digital Feedthrough —