\n| \u5de5\u4f5c\u6e29\u5ea6<\/td>\n | -40 to +125 C<\/td>\n<\/tr>\n<\/table>\n\u7279\u70b9<\/h2>\n\n- 12-bit DAC with non-volatile EEPROM<\/li>\n
- Rail-to-rail output buffer<\/li>\n
- 6us fast settling time<\/li>\n
- 2 selectable I2C addresses<\/li>\n
- Ultra-small SOT-23-6 package<\/li>\n<\/ul>\n
\u5e94\u7528<\/h2>\n\n- Sensor calibration and bias<\/li>\n
- Setpoint control<\/li>\n
- Motor speed control<\/li>\n
- Waveform generation<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"
Product Overview The MCP4725A0T-E\/CH from Microchip is a 12-bit I2C DAC with EEPROM memory and rail-to-rail output in SOT-23-6. Key Specifications Resolution 12-bit Channels 1 Interface I2C up to 3.4MHz Supply Voltage 2.7V to 5.5V Output Swing Rail-to-rail DNL +\/-0.2 LSB typical Settling Time 6 us typical EEPROM Yes (stores power-up default) I2C Address A0 […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13],"tags":[],"chip_brand":[134],"class_list":["post-7648","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","chip_brand-microchip"],"acf":{"brief_explanation":"12-bit I2C DAC, EEPROM, RRO, SOT-23-6","date_code":"","package_case":"SOT-23-6 (2.90 x 1.60 x 1.00 mm)","in_stock":18000,"datasheet":"https:\/\/ww1.microchip.com\/downloads\/en\/DeviceDoc\/22039d.pdf","price":"$1.35 @ 100+","product_introduction":"The MCP4725A0T-E\/CH from Microchip is a single-channel 12-bit voltage output DAC with integrated EEPROM in SOT-23-6. The EEPROM stores the DAC register value, enabling the device to restore its output to a known state on power-up without MCU intervention. The rail-to-rail output buffer drives loads directly without external amplification. The I2C interface supports up to 3.4MHz high-speed mode. The A0 pin provides two selectable I2C addresses for bus sharing. The A0 suffix denotes address 0x62 (A0=GND).","working_principle":"The MCP4725A0T-E\/CH operates as a 12-bit I2C digital-to-analog converter. (1) The 12-bit DAC core uses a resistor-string architecture with a rail-to-rail output buffer. The output voltage is VOUT = VDD x (DAC_CODE \/ 4096), where DAC_CODE ranges from 0 to 4095. The +\/-0.2 LSB DNL ensures monotonic behavior across all codes. (2) The EEPROM stores the DAC register value and configuration bits. On power-up, the device reads the EEPROM and sets the DAC output to the stored value. This is critical for applications requiring known output state before the MCU initializes. Write commands can update the DAC register only (volatile) or both DAC register and EEPROM (non-volatile). (3) The I2C interface supports standard (100kHz), fast (400kHz), and high-speed (3.4MHz) modes. A write command consists of: address byte, command byte (with write type), and 2 data bytes (12-bit DAC value + 4 config bits). The 6us settling time supports fast update rates.","pin_description":" | Pin<\/th> | Name<\/th> | Description<\/th><\/tr> |
|---|
| 1<\/td> | OUT<\/td> | DAC analog output; rail-to-rail output swings from VSS to VDD, 6 us settling time to 0.5 LSB<\/td><\/tr> | | 2<\/td> | VSS<\/td> | Ground reference<\/td><\/tr> | | 3<\/td> | VDD<\/td> | Power supply (2.7 V to 5.5 V); connect 0.1 uF decoupling capacitor<\/td><\/tr> | | 4<\/td> | SDA<\/td> | I2C serial data; open-drain bidirectional, requires external pull-up resistor<\/td><\/tr> | | 5<\/td> | SCL<\/td> | I2C serial clock; open-drain input, requires external pull-up resistor; supports 3.4 MHz High-Speed mode<\/td><\/tr> | | 6<\/td> | A0<\/td> | I2C address select; connect to VDD or VSS to set LSB of 7-bit address (0x60 or 0x61)<\/td><\/tr><\/table> Package: SOT-23-6. Resolution: 12 bits. I2C address: 0x60 (A0=GND) or 0x61 (A0=VDD). Internal EEPROM stores power-on default DAC value.<\/p>","application_scenarios":" - Sensor Calibration and Bias:<\/strong> Providing programmable offset voltage for Wheatstone bridge sensors with EEPROM-stored power-up default eliminating host initialization<\/li>
- Setpoint Control:<\/strong> 12-bit resolution voltage setpoint generation for motor speed controllers, LED current regulators, and temperature controllers via I2C interface<\/li>
- Waveform Generation:<\/strong> Arbitrary waveform output for test signals and stimulus generation with 6 us settling time and rail-to-rail output swing<\/li>
- Process Control Loops:<\/strong> Analog output for 4-20 mA current loop transmitters (with external V-to-I converter) in industrial instrumentation<\/li>
- Audio Volume Control:<\/strong> Digitally controlled analog gain setting in portable audio devices with 2-wire I2C interface and SOT-23 footprint<\/li><\/ul>","alternative_models":"
\n| Model<\/th> | Manufacturer<\/th> | Key Difference<\/th> | Package<\/th> | Resolution<\/th><\/tr>\n |
|---|
| MCP4725A1T-E\/CH<\/td> | Microchip<\/td> | Alternative I2C address variant (A0=VDD, address 0x63) for dual-DAC bus configurations<\/td> | SOT-23-6<\/td> | 12-bit<\/td><\/tr>\n | | DAC60508ZRTJR<\/td> | TI<\/td> | 8-channel 12-bit DAC with SPI interface and internal 2.5V reference in QFN-24<\/td> | QFN-24<\/td> | 12-bit<\/td><\/tr>\n | | AD5667BRMZ-1<\/td> | ADI<\/td> | Dual 16-bit DAC with I2C interface in MSOP-10 for higher resolution applications<\/td> | MSOP-10<\/td> | 16-bit<\/td><\/tr>\n | | MCP4726A0T-E\/CH<\/td> | Microchip<\/td> | Next-generation with non-volatile EEPROM and built-in voltage reference in SOT-23-6<\/td> | SOT-23-6<\/td> | 12-bit<\/td><\/tr>\n | | DAC43608DQPWR<\/td> | TI<\/td> | 8-channel 10-bit DAC with I2C, internal reference, and power-down mode in TSSOP-16<\/td> | TSSOP-16<\/td> | 10-bit<\/td><\/tr>\n<\/table>\n The MCP4725A0T-E\/CH is a 12-bit single-channel DAC with I2C interface and EEPROM power-on default in SOT-23-6. Two address variants (A0 suffix: GND=0x60, A1 suffix: VDD=0x63) allow two devices on one bus. For multi-channel needs, the DAC60508 offers 8 channels via SPI.<\/p>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/7648","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/comments?post=7648"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/7648\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/media?parent=7648"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/categories?post=7648"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/tags?post=7648"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=7648"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}} |
|
|