DAC7558是TI公司的一款精密DAC(=<10MSPS)产品，DAC7558是12 位、八路、超低短时脉冲波形干扰、电压输出数模转换器，本页介绍了DAC7558的产品说明、应用、特性等，并给出了与DAC7558相关的TI元器件型号供参考。
DAC7558 - 12 位、八路、超低短时脉冲波形干扰、电压输出数模转换器 - 精密DAC(=<10MSPS) - 数模转换器 - TI公司（Texas Instruments，德州仪器）
The DAC7558 is a 12-bit, octal-channel, voltage output DAC with exceptional linearity and monotonicity. Its proprietary architecture minimizes undesired transients such as code to code glitch and channel to channel crosstalk. The low-power DAC7558 operates from a single 2.7-V to 5.5-V supply. The DAC7558 output amplifiers can drive a 2-, 200-pF load rail-to-rail with 5-µs settling time; the output range is set using an external voltage reference.
The 3-wire serial interface operates at clock rates up to 50 MHz and is compatible with SPI, QSPI, Microwire™, and DSP interface standards. The outputs of all DACs may be updated simultaneously or sequentially. The parts incorporate a power-on-reset circuit to ensure that the DAC outputs power up to zero volts and remain there until a valid write cycle to the device takes place. The parts contain a power-down feature that reduces the current consumption of the device to under 2 µA.
The small size and low-power operation makes the DAC7558 ideally suited for battery-operated portable applications. The power consumption is typically 7.5 mW at 5 V, 3.7 mW at 3 V, and reduces to 1 µW in power-down mode.
The DAC7558 is available in a 32-lead QFN package and is specified over -40°C to 105°C.
- 2.7-V to 5.5-V Single Supply
- 12-Bit Linearity and Monotonicity
- Rail-to-Rail Voltage Output
- Settling Time: 5 µs (Max)
- Ultralow Glitch Energy: 0.1 nVs
- Ultralow Crosstalk: -100 dB
- Low Power: 1.8 mA (Max)
- Per-Channel Power Down: 2 µA (Max)
- Power-On Reset to Zero Scale and Mid Scale
- SPI-Compatible Serial Interface: Up to 50 MHz
- Simultaneous or Sequential Update
- Asynchronous Clear
- Binary and Twos-Complement Capability
- Daisy-Chain Operation
- 1.8-V to 5.5-V Logic Compatibility
- Specified Temperature Range: -40°C to 105°C
- Small, 5-mm x 5-mm, 32-Lead QFN Package
- APPLICATIONS
- Portable Battery-Powered Instruments
- Digital Gain and Offset Adjustment
- Programmable Voltage and Current Sources
- Programmable Attenuators
- Industrial Process Control
Microwire is a trademark of National Semiconductor Corp..
