Maxim Integrated MAX5815 12位缓冲输出数模转换器
Maxim Integrated MAX5815 12位、4通道缓冲输出 数模转换器 (DAC)带有一个内部基准(可选择为2.048V、2.500V或4.096V)。Maxim Integrated MAX5815 DAC可承受2.7V至5.5V的宽幅电源电压范围，具有超低功耗(3mW)，适合绝大多数低压应用。外部精密基准输入用于支持轨到轨满幅工作，对外部基准具有100kΩ (典型值)的等效负载阻抗。MAX5815 采用 I²C兼容、2线接口，可在高达400kHz时钟速率下工作。DAC输出带有缓冲，提供每通道小于250µA的低供电电流以及±0.5mV (典型值)的低偏移误差。MAX5815 DAC 特别适用于可编程电压及电流源、增益与失调调节等多种应用场合。
特性
- Four High-Accuracy DAC Channels
- 12-Bit Accuracy Without Adjustment
- ±1 LSB INL Buffered Voltage Output
- Guaranteed Monotonic Over All Operating Conditions
- Independent Mode Settings for Each DAC
- Three Precision Selectable Internal References
- 2.048V, 2.500V, or 4.096V
- Internal Output Buffer
- Rail-to-Rail Operation with External Reference
- 4.5μs Settling Time
- Outputs Directly Drive 2kΩ Loads
- Wide 2.7V to 5.5V Supply Range
- Separate 1.8V to 5.5V VDDIO Power-Supply Input
- Fast 400kHz I²C-Compatible, 2-Wire Serial Interface
- Power-On-Reset to Zero-Scale DAC Output
- Active-Low LDAC and Active-Low CLR For Asynchronous Control
- Three Software-Selectable Power-Down Output Impedances
- 1kΩ, 100kΩ, or High Impedance
