Overview
The DAC8551IDGKR is a 16-bit, ultralow-glitch, voltage-output digital-to-analog converter (DAC) produced by Texas Instruments. This device is designed to be small and low-power, making it ideal for portable, battery-operated equipment. It features a monotonic architecture, providing good linearity and minimizing undesired code-to-code transient voltages. The DAC8551 uses a versatile 3-wire serial interface compatible with standard SPI, QSPI, Microwire, and digital signal processor (DSP) interfaces, operating at clock rates up to 30 MHz. The device requires an external reference voltage to set its output range and includes a power-on-reset circuit that ensures the DAC output powers up at 0 V until a valid write takes place.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Resolution | Number of bits | 16 bits |
| Power Supply | Voltage range | 2.7 V to 5.5 V |
| Operating Temperature Range | Temperature range | -40°C to 105°C |
| Settling Time | Time to ±0.003% FSR | 10 µs |
| Glitch Energy | Code change glitch impulse | 0.1 nV-s |
| Power Consumption | Normal mode at 2.7 V | 0.38 mW |
| Power Consumption (Power-Down) | Current at 5 V | < 1 µW |
| Serial Interface Clock Rate | Maximum clock rate | 30 MHz |
| Output Voltage Range | Range based on VREF | 0 to VREF |
| Package | Type and pins | VSSOP (DGK), 8 pins |
Key Features
- Relative Accuracy: 8LSB
- Glitch Energy: 0.1 nV-s
- MicroPower Operation: 140 µA at 2.7 V
- Power-On Reset to Zero
- 16-Bit Monotonic
- Settling Time: 10 µs to ±0.003% FSR
- Low-Power Serial Interface with Schmitt-Triggered Inputs
- On-Chip Output Buffer Amplifier with Rail-to-Rail Operation
- Power-Down Capability
- Binary Input
- SYNC Interrupt Facility
- Drop-In Compatible With DAC85x1 and DAC8550 (2's Complement Input)
Applications
- Process Control
- Data Acquisition Systems
- Closed-Loop Servo-Control
- PC Peripherals
- Portable Instrumentation
- Programmable Attenuation
Q & A
- What is the resolution of the DAC8551? The DAC8551 is a 16-bit digital-to-analog converter.
- What is the operating temperature range of the DAC8551? The operating temperature range is -40°C to 105°C.
- What is the settling time of the DAC8551? The settling time is 10 µs to ±0.003% FSR.
- What is the glitch energy of the DAC8551? The glitch energy is 0.1 nV-s.
- What is the power consumption of the DAC8551 in normal mode at 2.7 V? The power consumption is 0.38 mW.
- What is the power consumption of the DAC8551 in power-down mode? The power consumption is less than 1 µW.
- What is the maximum clock rate of the serial interface? The maximum clock rate is 30 MHz.
- Does the DAC8551 have a power-on-reset feature? Yes, the DAC8551 has a power-on-reset circuit that ensures the output powers up at 0 V.
- Is the DAC8551 compatible with other DAC models? Yes, it is drop-in compatible with DAC85x1 and DAC8550 (2's Complement Input).
- What type of package does the DAC8551IDGKR come in? The DAC8551IDGKR comes in a VSSOP (DGK) package with 8 pins.
