Overview
The DAC128S085CISQ from Texas Instruments is a 12-bit micro power OCTAL digital-to-analog converter (DAC) designed for general-purpose applications. It operates from a single supply voltage ranging from 2.7 V to 5.5 V and is available in 16-lead WQFN and TSSOP packages. The WQFN package makes it the smallest OCTAL DAC in its class, making it ideal for space-constrained designs. The device features rail-to-rail output swing and a 3-wire serial interface compatible with standard SPI, QSPI, MICROWIRE, and DSP interfaces, operating at clock rates up to 40 MHz. The DAC128S085CISQ also includes a power-on reset circuit and individual channel power-down capability, reducing power consumption to less than 0.3 µW at 3 V and less than 1 µW at 5 V when all channels are powered down.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Power Consumption | 1.95 mW at 3 V, 4.85 mW at 5 V |
| Power Down Consumption | < 0.3 µW at 3 V, < 1 µW at 5 V |
| Integral Nonlinearity (INL) | ±8 LSB (max) |
| Differential Nonlinearity (DNL) | +0.75 / −0.4 LSB (max) |
| Settling Time | 8.5 μs (max) |
| Zero Code Error | +15 mV (max) |
| Full-Scale Error | −0.75 %FSR (max) |
| Operating Temperature Range | −40°C to 125°C |
| Package Type | 16-lead WQFN, 16-lead TSSOP |
Key Features
- Rail-to-rail output swing
- 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP interfaces, operating at clock rates up to 40 MHz
- Daisy-chain capability for simultaneous updating of multiple DACs
- Individual channel power-down capability with three different termination options
- Power-on reset circuit ensuring DAC outputs power up to zero volts
- Dual reference voltages with a range of 0.5 V to VA
- Simultaneous or individual updating of all eight DAC outputs
Applications
- Battery-powered instruments
- Digital gain and offset adjustment
- Sensor supply voltage
- Range detectors
- General-purpose voltage-output applications requiring low power and high precision
Q & A
- What is the resolution of the DAC128S085CISQ? The resolution is 12 bits.
- What is the supply voltage range for the DAC128S085CISQ? The supply voltage range is from 2.7 V to 5.5 V.
- How much power does the DAC128S085CISQ consume? It consumes 1.95 mW at 3 V and 4.85 mW at 5 V.
- What is the power consumption when all channels are powered down? The power consumption is less than 0.3 µW at 3 V and less than 1 µW at 5 V.
- What is the operating temperature range of the DAC128S085CISQ? The operating temperature range is from −40°C to 125°C.
- What types of packages are available for the DAC128S085CISQ? It is available in 16-lead WQFN and 16-lead TSSOP packages.
- Does the DAC128S085CISQ support daisy-chain operation? Yes, it supports daisy-chain operation for simultaneous updating of multiple DACs.
- Can the DAC channels be updated individually or simultaneously? Yes, all eight DAC outputs can be updated simultaneously or individually.
- What is the settling time of the DAC128S085CISQ? The settling time is 8.5 μs (max).
- Is the DAC128S085CISQ suitable for battery-operated equipment? Yes, it is an excellent choice for battery-operated equipment due to its low power consumption and small package size.
