DAC121C085
- Ensured Monotonicity to 12-Bits
- Low Power Operation: 156-µA Maximum at 3.3 V
- Extended Power Supply Range (2.7 V to 5.5 V)
- I2C-Compatible 2-Wire Interface Which Supports Standard (100-kHz), Fast (400-kHz), and High-Speed (3.4-MHz) Modes
- Rail-to-Rail Voltage Output
- Very Small Package
- Resolution: 12 bits
- INL: ±8 LSB (Maximum)
- DNL: 0.6 / –0.5 LSB (Maximum)
- Settling Time: 8.5 µs (Maximum)
- Zero Code Error: 10 mV (Maximum)
- Full-Scale Error: −0.7%FS (Maximum)
- Supply Power
- Normal: 380 µW (3 V) / 730 µW (5 V) (Typical)
- Power Down: 0.5 µW (3 V) / 0.9 µW (5 V) (Typical)
The DAC121C081 is a 12-bit, single-channel, voltage-output digital-to-analog converter (DAC) that operates from a 2.7-V to 5.5-V supply. The output amplifier allows rail-to-rail output swing and has an 8.5-µs settling time. The DAC121C081 uses the supply voltage as the reference to provide the widest dynamic output range, and typically consumes 132 µA while operating at 5 V. It is available in 6-pin SOT and WSON packages, and provides three address options (pin selectable).
As an alternative, the DAC121C085 provides nine I2C addressing options and uses an external reference. It has the same performance and settling time as the DAC121C081, and is available in an 8-lead VSSOP.
The DAC121C081 and DAC121C085 use a 2-wire, I2C-compatible serial interface that operates in all three speed modes, including high-speed mode (3.4 MHz). An external address selection pin allows up to three DAC121C081 or nine DAC121C085 devices per 2-wire bus. Pin compatible alternatives to the DAC121C081 are available that provide additional address options.
The DAC121C081 and DAC121C085 each have a 16-bit register that controls the mode of operation, the power-down condition, and the output voltage. A power-on reset circuit ensures that the DAC output powers up to 0 V. A power-down feature reduces power consumption to less than a microWatt. Their low power consumption and small packages make these DACs an excellent choice for use in battery-operated equipment. Each DAC operates over the extended industrial temperature range of −40°C to +125°C.
The DAC121C081 and DAC121C085 are each part of a family of pin compatible DACs that also provide 8 and 10 bit resolution. For 8-bit DACs see the DAC081C081 and DAC081C085. For 10-bit DACs see the DAC101C081 and DAC101C085.
Technical documentation
Type | Title | Date | ||
---|---|---|---|---|
* | Data sheet | DAC121C081 and DAC121C085 12-Bit Micro Power Digital-to-Analog Converter With an I2C-Compatible Interface datasheet (Rev. F) | PDF | HTML | 03 Oct 2016 |
Application note | A Basic Guide to I2C | PDF | HTML | 08 Nov 2022 | |
EVM User's guide | DAC121C085EVM Booster Pack User’s Guide | 05 Nov 2014 | ||
Application note | AN-2001 Daisy Chaining Precision DACs (Rev. A) | 01 May 2013 | ||
User guide | 8/10/12-Bit Micro Power D/A Converter with I2C Interface Eval Bd User Guide | 25 Jan 2012 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
DAC121C085EVM — DAC121C085 Evaluation Module
The DAC121C085EVM is a demonstration kit for the DAC121C085, a 12-bit, 1-channel, 8.5us settling time, 2-wire interface digital-to-analog converter. The EVM allows users to evaluate the operation and performance of the DAC121C085 data converter. The EVM features a small size layout that directly (...)
ANALOG-ENGINEER-CALC — Analog engineer's calculator
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
TINA-TI — SPICE-based analog simulation program
Package | Pins | CAD symbols, footprints & 3D models |
---|---|---|
VSSOP (DGK) | 8 | Ultra Librarian |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
- Fab location
- Assembly location
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
TI E2E™ forums with technical support from TI engineers
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.