DAC7565中文资料具有 2.5V、2ppm/°C 内部基准电压和复位功能的 12 位、四通道、超低毛刺脉冲、电压输出 DAC数据手册TI规格书

描述 Description

The DAC7565 is a low-power, voltage-output, four-channel, 12-bit digital-to-analog converter (DAC). The device includes a 2.5V, 2ppm/°C internal reference (enabled by default), giving a full-scale output voltage range of 2.5V. The internal reference has an initial accuracy of 0.02% and can source up to 20mA at the VREFH/VREFOUT pin. The device is monotonic, provides very good linearity, and minimizes undesired code-to-code transient voltages (glitch). The DAC7565 uses a versatile 3-wire serial interface that operates at clock rates up to 50MHz. The interface is compatible with standard SPI™, QSPI™, Microwire™, and digital signal processor (DSP) interfaces. The DAC7565 incorporates a power-on-reset circuit that ensures the DAC output powers up at either zero-scale or mid-scale until a valid code is written to the device. The device contains a power-down feature, accessed over the serial interface, that reduces the current consumption of the device to 1.3µA at 5V. Power consumption is 2.9mW at 3V, reducing to 1.5µW in power-down mode. The low power consumption, internal reference, and small footprint make this device ideal for portable, battery-operated equipment. The DAC7565 is drop-in and functionally compatible with the DAC8165 and DAC8565, and functionally compatible with the DAC7564, DAC8164 and DAC8564. All these devices are available in a TSSOP-16 package.

特性 Features

• Relative Accuracy: 0.5LSB
• Internal Reference:
• 0.004% Initial Accuracy (typ)
• 5ppm/°C Temperature Drift (max)
• Power-On Reset to Zero-Scale or Mid-Scale
• Ultra-Low Power Operation: 1mA at 5V
• 12-Bit Monotonic Over Temperature Range
• Low-Power Serial Interface with Schmitt-Triggered Inputs: Up to 50MHz
• 1.8V to 5.5V Logic Compatibility
• APPLICATIONS
• Portable Instrumentation
• Process Control, PLCs
• 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.