Overview
The DAC121C085CIMMX/NOPB is a 12-bit, single-channel, voltage-output digital-to-analog converter (DAC) produced by Texas Instruments. This device operates from a wide power supply range of 2.7 V to 5.5 V, making it versatile for various applications. It features a low power consumption of 156 µA maximum at 3.3 V, which is ideal for battery-operated equipment. The DAC121C085 uses an external reference voltage and supports I2C-compatible 2-wire interface in standard, fast, and high-speed modes. The device is available in an 8-lead VSSOP package and is part of a family of pin-compatible DACs offering different resolutions.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 12 bits | |
| Power Supply Range | 2.7 V to 5.5 V | |
| Power Consumption (Normal) | 380 µW (3 V) / 730 µW (5 V) | |
| Power Consumption (Power Down) | 0.5 µW (3 V) / 0.9 µW (5 V) | |
| Settling Time | 8.5 µs (Maximum) | |
| Integral Nonlinearity (INL) | ±8 LSB (Maximum) | |
| Differential Nonlinearity (DNL) | 0.6 / –0.5 LSB (Maximum) | |
| Zero Code Error | 10 mV (Maximum) | |
| Full-Scale Error | −0.7%FS (Maximum) | |
| Output Load | Up to 1500 pF | |
| Operating Temperature | −40°C to +125°C | |
| Package Type | 8-lead VSSOP |
Key Features
- 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 supporting standard (100 kHz), fast (400 kHz), and high-speed (3.4 MHz) modes
- Rail-to-rail voltage output
- Very small package: 8-lead VSSOP
- External reference voltage input (for DAC121C085)
- Power-down feature reducing power consumption to less than a microWatt
- Power-on reset circuit ensuring DAC output powers up to 0 V
Applications
- Industrial process control
- Portable instruments
- Digital gain and offset adjustment
- Programmable voltage and current sources
- Test equipment
- Battery-operated equipment
Q & A
- What is the resolution of the DAC121C085?
The DAC121C085 has a resolution of 12 bits.
- What is the power supply range for the DAC121C085?
The power supply range is from 2.7 V to 5.5 V.
- What is the maximum power consumption of the DAC121C085 at 3.3 V?
The maximum power consumption is 156 µA at 3.3 V.
- What types of I2C modes does the DAC121C085 support?
The DAC121C085 supports standard (100 kHz), fast (400 kHz), and high-speed (3.4 MHz) I2C modes.
- What is the settling time of the DAC121C085?
The settling time is 8.5 µs (maximum).
- What is the package type of the DAC121C085?
The package type is an 8-lead VSSOP.
- Does the DAC121C085 have a power-down feature?
- What is the operating temperature range of the DAC121C085?
The operating temperature range is from −40°C to +125°C.
- Can the DAC121C085 be used in battery-operated equipment?
- Does the DAC121C085 use an external reference voltage?
