Overview
The DAC128S085CISQX from Texas Instruments is a full-featured, general-purpose OCTAL 12-bit voltage-output digital-to-analog converter (DAC). It operates from a single 2.7-V to 5.5-V supply, consuming 1.95 mW at 3 V and 4.85 mW at 5 V. This DAC is packaged in both 16-lead WQFN and 16-lead TSSOP packages, with the WQFN package being the smallest in its class. The on-chip output amplifiers allow for rail-to-rail output swing, and the 3-wire serial interface supports clock rates up to 40 MHz across the entire supply voltage range, compatible with standard SPI™, QSPI, MICROWIRE, and DSP interfaces.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 Bits |
| Operating Temperature Range | –40°C to 125°C |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Power Consumption (Typical) | 1.95 mW (3 V), 4.85 mW (5 V) |
| Power Down Consumption (Typical) | 0.3 µW (3 V), 1 µW (5 V) |
| Integral Nonlinearity (INL) | ±8 LSB (Maximum) |
| Differential Nonlinearity (DNL) | 0.75 / –0.4 LSB (Maximum) |
| Settling Time | 8.5 μs (Maximum) |
| Zero Code Error | 15 mV (Maximum) |
| Full-Scale Error | –0.75 %FSR (Maximum) |
| Package Types | 16-lead WQFN, 16-lead TSSOP |
| Serial Interface Clock Rate | Up to 40 MHz |
Key Features
- Ensured Monotonicity
- Low Power Operation
- Rail-to-Rail Voltage Output
- Daisy-Chain Capability
- Power-on Reset to 0 V
- Simultaneous Output Updating
- Individual Channel Power-Down Capability
- Wide Power Supply Range (2.7 V to 5.5 V)
- Dual Reference Voltages With Range of 0.5 V to VA
- Smallest Package in the Industry
Applications
- Battery-Powered Instruments
- Digital Gain and Offset Adjustment
- Programmable Voltage & Current Sources
- Programmable Attenuators
Q & A
- What is the resolution of the DAC128S085? The DAC128S085 has a resolution of 12 bits.
- What is the operating temperature range of the DAC128S085? The operating temperature range is –40°C to 125°C.
- What are the typical power consumption values for the DAC128S085? The typical power consumption is 1.95 mW at 3 V and 4.85 mW at 5 V.
- Can the DAC128S085 be powered down individually for each channel? Yes, the DAC128S085 allows individual channel power-down capability.
- What is the maximum clock rate for the serial interface of the DAC128S085? The serial interface supports clock rates up to 40 MHz.
- Is the DAC128S085 compatible with standard serial interfaces? Yes, it is compatible with standard SPI™, QSPI, MICROWIRE, and DSP interfaces.
- What are the package options for the DAC128S085? The DAC128S085 is available in 16-lead WQFN and 16-lead TSSOP packages.
- Does the DAC128S085 support daisy-chain operation? Yes, it supports daisy-chain operation where an unlimited number of DAC128S085s can be updated simultaneously using a single serial interface.
- What is the settling time for the DAC128S085? The settling time is 8.5 μs (Maximum).
- Can the reference voltages be set independently for different channels? Yes, each reference can be set independently between 0.5 V and VA for channels A through D and E through H.
