Overview
The DAC7811IDGSR is a 12-bit, serial input, multiplying digital-to-analog converter (DAC) produced by Texas Instruments. This CMOS device operates from a 2.7-V to 5.5-V power supply, making it suitable for battery-powered and various other applications. The DAC7811 features a double-buffered 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and most DSP interface standards. It also includes a serial data out pin (SDO) for daisy-chaining multiple devices and a readback function to read the contents of the DAC register via the SDO pin. On power-up, the internal shift register and latches are filled with zeroes, and the DAC outputs are at zero scale.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Resolution | 12 | Bits | ||
| Supply Voltage | 2.7 | 5.5 | V | |
| Serial Interface Frequency | 50 | MHz | ||
| Multiplying Bandwidth | 10 | MHz | ||
| Reference Input Range | -15 | 15 | V | |
| Relative Accuracy | ±1 | LSB | ||
| Differential Nonlinearity | ±1 | LSB | ||
| Output Leakage Current (at 25°C) | ±5 | nA | ||
| Full-Scale Gain Error | ±10 | mV | ||
| Full-Scale Tempco | ±5 | ppm/°C | ||
| Operating Temperature Range | -40 | 125 | °C | |
| Package Type | 10-lead VSSOP |
Key Features
- 2.7-V to 5.5-V supply operation
- 50-MHz serial interface compatible with SPI, QSPI, MICROWIRE, and most DSP interface standards
- 10-MHz multiplying bandwidth
- ±15-V reference input range
- Low glitch energy: 5 nV-s
- Extended temperature range: -40°C to +125°C
- 12-bit monotonic and 4-quadrant multiplication
- Power-on reset with brownout detection
- Daisy-chain mode and readback function
- Industry-standard pin configuration
Applications
- Portable battery-powered instruments
- Waveform generators
- Analog processing
- Programmable amplifiers and attenuators
- Digitally controlled calibration
- Programmable filters and oscillators
- Composite video
- Ultrasound
Q & A
- What is the resolution of the DAC7811? The DAC7811 has a resolution of 12 bits.
- What is the operating voltage range of the DAC7811? The DAC7811 operates from a 2.7-V to 5.5-V power supply.
- What is the maximum serial interface frequency of the DAC7811? The serial interface frequency can be as high as 50 MHz.
- What is the multiplying bandwidth of the DAC7811? The multiplying bandwidth is 10 MHz.
- What is the range of the reference input voltage for the DAC7811? The reference input voltage range is ±15 V.
- Does the DAC7811 support daisy-chaining? Yes, the DAC7811 supports daisy-chaining through its serial data out pin (SDO).
- What is the package type of the DAC7811? The DAC7811 is available in a 10-lead VSSOP package.
- What are the key applications of the DAC7811? Key applications include portable battery-powered instruments, waveform generators, analog processing, and more.
- Does the DAC7811 have a power-on reset feature? Yes, the DAC7811 features a power-on reset with brownout detection.
- Can the DAC7811 operate in extreme temperatures? Yes, the DAC7811 operates over an extended temperature range of -40°C to +125°C.
