| Resolution (Bits) | 16 |
| Number of DAC channels (#) | 4 |
| Interface type | SPI |
| Output type | Buffered Voltage |
| Settling time (μs) | 10 |
| Reference type | Ext |
| Architecture | String |
| Rating | Catalog |
| Output range (Max) (mA/V) | 5.5 |
| Output range (Min) (mA/V) | 0 |
| Operating temperature range (C) | -40 to 105 |
- Relative Accuracy: 4LSB
- Glitch Energy: 0.15nV-s
- MicroPower Operation: 150μA per Channel at 2.7V
- Power-On Reset to Zero-Scale or Midscale
- Power Supply: +2.7V to +5.5V
- 16-Bit Monotonic Over Temperature
- Settling Time: 10μs to ±0.003% FSR
- Ultra-Low AC Crosstalk: -100dB Typ
- Low-Power SPI-Compatible Serial Interface with Schmitt-Triggered Inputs: Up to 50MHz
- On-Chip Output Buffer Amplifier with Rail-to-Rail Operation
- Double Buffered Input Architecture
- Simultaneous or Sequential Output Update and Power-Down
- Binary and 2's Complement Capability
- Asynchronous Clear to Zero-Scale and Midscale
- 1.8V to 5.5V Logic Compatibility
- Available in a TSSOP-16 Package
- APPLICATIONS
- Portable Instrumentation
- Closed-Loop Servo-Control
- Process Control
- Data Acquisition Systems
- Programmable Attenuation
- PC Peripherals
SPI, QSPI are trademarks of Motorola, Inc.
Microwire is a trademark of National Semiconductor.
All other trademarks are the property of their respective owners.
The DAC8555 is a 16-bit, quad channel, voltage output digital-to-analog converter (DAC) offering low-power operation and a flexible serial host interface. It offers monotonicity, good linearity, and exceptionally low glitch. Each on-chip precision output amplifier allows rail-to-rail output swing to be achieved over the supply range of 2.7V to 5.5V. The device supports a standard 3-wire serial interface capable of operating with input data clock frequencies up to 50MHz for IOVDD = 5V.
The DAC8555 requires an external reference voltage to set the output range of each DAC channel. Also incorporated into the device is a power-on reset circuit, which can be programmed to ensure that the DAC outputs power up at zero-scale or midscale and remain there until a valid write takes place. The device also has the capability to function in both binary and 2's complement mode. The DAC8555 provides a per channel power-down feature, accessed over the serial interface, that reduces the current consumption to 175nA per channel at 5V.
The low-power consumption of this device in normal operation makes it ideally suited to portable battery- operated equipment and other low-power applications. The power consumption is 5mW at 5V, reducing to 4μW in power-down mode.
The DAC8555 is available in a TSSOP-16 package with a specified operating temperature range of -40°C to +105°C.