Overview
The DAC8532IDGK from Texas Instruments is a dual-channel, 16-bit digital-to-analog converter (DAC) designed for low power operation and featuring a flexible serial host interface. This device is particularly suited for applications requiring high precision and low power consumption, such as portable battery-operated equipment, process control, and data acquisition systems. The DAC8532IDGK operates over a supply range of 2.7 V to 5.5 V and includes on-chip precision output amplifiers that allow rail-to-rail output swing. It also incorporates a power-on reset circuit that ensures the DAC outputs power up at zero-scale and remain there until a valid write sequence is executed.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 16-bit | |
| Number of Channels | 2 | |
| Supply Voltage Range | 2.7 V to 5.5 V | V |
| Power Consumption (Normal Mode) | 500 µA at 5 V, 450 µA at 3 V | µA |
| Power Consumption (Power-Down Mode) | 200 nA at 5 V, 50 nA at 3 V | nA |
| Settling Time | 10 µs to ±0.003% FSR | µs |
| Serial Interface Clock Frequency | Up to 30 MHz at 5 V | MHz |
| Operating Temperature Range | –40°C to 105°C | °C |
| Package Type | VSSOP-8 |
Key Features
- Low power operation with 500 µA at 5 V and 450 µA at 3 V in normal mode, reducing to 200 nA at 5 V and 50 nA at 3 V in power-down mode.
- Flexible serial host interface compatible with SPI, QSP, Microwire, and most DSPs, with clock frequencies up to 30 MHz at 5 V.
- On-chip precision output amplifiers allowing rail-to-rail output swing over the supply range.
- Power-on reset circuit ensuring DAC outputs power up at zero-scale and remain there until a valid write sequence is executed.
- Double-buffered input architecture and simultaneous or sequential output update and power-down capabilities.
- Ultra-low AC crosstalk of –100 dB typical.
- Available in a tiny VSSOP-8 package with a specified operating temperature range of –40°C to 105°C.
Applications
- Portable instrumentation and battery-operated equipment.
- Closed-loop servo control and process control systems.
- Data acquisition systems.
- Programmable attenuation and PC peripherals.
Q & A
- What is the resolution of the DAC8532IDGK?
The DAC8532IDGK has a resolution of 16 bits.
- How many channels does the DAC8532IDGK have?
The DAC8532IDGK is a dual-channel DAC.
- What is the supply voltage range for the DAC8532IDGK?
The supply voltage range is from 2.7 V to 5.5 V.
- What is the power consumption of the DAC8532IDGK in normal mode?
In normal mode, the power consumption is 500 µA at 5 V and 450 µA at 3 V.
- How does the power consumption change in power-down mode?
In power-down mode, the power consumption reduces to 200 nA at 5 V and 50 nA at 3 V.
- What is the settling time of the DAC8532IDGK?
The settling time is 10 µs to ±0.003% FSR.
- What is the maximum serial interface clock frequency supported by the DAC8532IDGK?
The maximum serial interface clock frequency is up to 30 MHz at 5 V.
- What is the operating temperature range of the DAC8532IDGK?
The operating temperature range is from –40°C to 105°C.
- In what package type is the DAC8532IDGK available?
The DAC8532IDGK is available in a VSSOP-8 package.
- What is the purpose of the power-on reset circuit in the DAC8532IDGK?
The power-on reset circuit ensures that the DAC outputs power up at zero-scale and remain there until a valid write sequence is executed.
