| Resolution (Bits) | 12 |
| Number of DAC channels (#) | 1 |
| Interface type | SPI |
| Output type | Buffered Voltage |
| Settling time (μs) | 5 |
| Features | Low Power, SDO |
| 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 (INL): ±0.35LSB
- Ultra-Low Glitch Energy: 0.1nV-s
- Low Power Operation: 100μA at 2.7V
- Power-On Reset to Zero Scale
- Power Supply: 2.7V to 5.5V Single Supply
- Power-Down: 0.05μA at 2.7V
- 12-Bit Linearity and Monotonicity
- Rail-to-Rail Voltage Output
- Settling Time: 5μs (Max)
- SPI-Compatible Serial Interface with Schmitt-Trigger Input: Up to 50MHz
- Daisy-Chain Capability
- Asynchronous Hardware Clear to Zero Scale
- Specified Temperature Range: -40°C to +105°C
- Small, 2 x 3 mm, 12-Lead SON Package
- APPLICATIONS
- Portable, Battery-Powered Instruments
- Digital Gain and Offset Adjustment
- Programmable Voltage and Current Sources
- Programmable Attenuators
- Industrial Process Control
SPI, QSPI are trademarks of Motorola, Inc.
Microwire is a trademark of National Semiconductor Corp..
All other trademarks are the property of their respective owners.
The DAC7551 is a single-channel, voltage-output digital-to-analog converter (DAC) with exceptional linearity and monotonicity, and a proprietary architecture that minimizes glitch energy. The low-power DAC7551 operates from a single 2.7V to 5.5V supply. The DAC7551 output amplifiers can drive a 2k
, 200pF load rail-to-rail with 5μs settling time; the output range is set using an external voltage reference.
The 3-wire serial interface operates at clock rates up to 50MHz and is compatible with SPI?, QSPI?, Microwire?, and DSP interface standards. The parts incorporate a power-on-reset circuit to ensure that the DAC output powers up to 0V and remains there until a valid write cycle to the device takes place. The part contains a power-down feature that reduces the current consumption of the device to under 2μA.
Small size and low-power operation make the DAC7551 ideally suited for battery-operated, portable applications. The power consumption is typically 0.5mW at 5V, 0.23mW at 3V, and reduces to 1μW in power-down mode.
The DAC7551 is available in a 12-lead SON package and is specified over -40°C to +105°C.