Overview
The DAC7558IRHBR, produced by Texas Instruments, is a 12-bit, octal-channel, voltage output digital-to-analog converter (DAC) known for its exceptional linearity and monotonicity. This device operates from a single 2.7-V to 5.5-V supply and features ultralow glitch energy and crosstalk, making it ideal for applications requiring high precision and low noise. The DAC7558 is designed with a proprietary architecture that minimizes undesired transients such as code-to-code glitch and channel-to-channel crosstalk. It is particularly suited for battery-operated portable instruments and industrial process control due to its low power consumption and small package size.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Resolution | 12 | Bits | ||
| Relative Accuracy (INL) | ±0.35 | ±1 | LSB | |
| Differential Nonlinearity | ±0.08 | ±0.5 | LSB | |
| Offset Error | ±12 | mV | ||
| Gain Error | ±0.15 %FSR | % | ||
| Full-Scale Error | ±0.5 %FSR | % | ||
| Output Voltage Range | 0 | VREF | V | |
| Output Voltage Settling Time | 5 µs | µs | ||
| Slew Rate | 1.8 V/µs | V/µs | ||
| Power Consumption | 1.8 mA | mA | ||
| Power-Down Current | 2 µA | µA | ||
| Operating Temperature Range | –40°C | 105°C | °C | |
| Package Type | 32-Lead QFN |
Key Features
- 12-bit resolution with exceptional linearity and monotonicity
- Ultralow glitch energy: 0.1 nVs
- Ultralow crosstalk: –100 dB
- Rail-to-rail voltage output with 5-µs settling time
- Low power consumption: 1.8 mA (max), 2 µA (max) in power-down mode
- Per-channel power down capability
- SPI-compatible serial interface up to 50 MHz
- Simultaneous or sequential update of DAC outputs
- Asynchronous clear and binary/twos-complement capability
- Daisy-chain operation and 1.8-V to 5.5-V logic compatibility
- Small, 5-mm x 5-mm, 32-lead QFN package
Applications
- Portable battery-powered instruments
- Industrial process control
- Programmable voltage and current sources
- Programmable attenuators
- Digital gain and offset adjustment
Q & A
- What is the resolution of the DAC7558?
The DAC7558 has a 12-bit resolution.
- What is the operating voltage range of the DAC7558?
The DAC7558 operates from a single 2.7-V to 5.5-V supply.
- What is the settling time of the DAC7558?
The output voltage settling time is 5 µs.
- Does the DAC7558 support SPI interface?
Yes, the DAC7558 has an SPI-compatible serial interface up to 50 MHz.
- How much power does the DAC7558 consume in normal operation?
The DAC7558 consumes a maximum of 1.8 mA in normal operation.
- What is the power consumption in power-down mode?
The power consumption in power-down mode is 2 µA (max).
- What is the operating temperature range of the DAC7558?
The operating temperature range is –40°C to 105°C.
- Can the DAC7558 outputs be updated simultaneously or sequentially?
Yes, the outputs of all DACs may be updated simultaneously or sequentially.
- Does the DAC7558 support daisy-chain operation?
Yes, the DAC7558 supports daisy-chain operation.
- What package type is the DAC7558 available in?
The DAC7558 is available in a 32-lead QFN package.
