Overview
The DAC128S085CISQX/NOPB, produced by Texas Instruments, is a full-featured, general-purpose OCTAL 12-bit voltage-output digital-to-analog converter (DAC). This device operates from a single 2.7-V to 5.5-V supply, making it highly versatile for various applications. It is packaged in both 16-lead WQFN and 16-lead TSSOP packages, with the WQFN package being the smallest in its class. The DAC128S085 is designed for low power operation, consuming 1.95 mW at 3 V and 4.85 mW at 5 V, making it an excellent choice for battery-operated equipment. It also features a 3-wire serial interface compatible with standard SPI™, QSPI, MICROWIRE, and DSP interfaces, operating at clock rates up to 40 MHz across the entire supply voltage range.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Number of D/A Converters | 8 |
| Settling Time | 8.5 μs (Maximum) |
| Output Type | Voltage - Buffered |
| Differential Output | No |
| Data Interface | SPI, DSP |
| Reference Type | External |
| Voltage - Supply, Analog | 2.7 V to 5.5 V |
| Voltage - Supply, Digital | 2.7 V to 5.5 V |
| INL/DNL (LSB) | ±2, +0.15/-0.09 |
| Architecture | String DAC |
| Operating Temperature | -40°C to 125°C |
| Package / Case | 16-WFQFN Exposed Pad |
| Power Consumption | 1.95 mW (3 V) / 4.85 mW (5 V) Typical |
| Power Down | 0.3 µW (3 V) / 1 µW (5 V) Typical |
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 V_A
- Operating Temperature Range of -40°C to 125°C
- Smallest Package in the Industry
Applications
- Battery-Powered Instruments
- Digital Gain and Offset Adjustment
- Programmable Voltage & Current Sources
- Programmable Attenuators
- Voltage Reference for ADCs
- Sensor Supply Voltage
- Range Detectors
Q & A
- What is the resolution of the DAC128S085?
The DAC128S085 has a resolution of 12 bits.
- What is the power consumption of the DAC128S085 at 3 V and 5 V?
The power consumption is 1.95 mW at 3 V and 4.85 mW at 5 V.
- What is the operating temperature range of the DAC128S085?
The operating temperature range is -40°C to 125°C.
- What types of packages are available for the DAC128S085?
The DAC128S085 is available in 16-lead WQFN and 16-lead TSSOP packages.
- Does the DAC128S085 support daisy-chain operation?
- What is the settling time of the DAC128S085?
The settling time is 8.5 μs (Maximum).
- What are the reference voltage ranges for the DAC128S085?
The reference voltages can be set independently between 0.5 V and V_A for each set of channels.
- How does the power-down feature work on the DAC128S085?
The power-down feature allows each DAC to be independently powered with three different termination options, 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.
- Is the DAC128S085 compatible with other DACs in terms of pinout?
- What are some typical applications of the DAC128S085?
