DAC8802中文资料14 位双通道串行接口乘法数模转换器数据手册TI规格书

描述 Description

The DAC8802 is a dual, 14-bit, current-output digital-to-analogconverter (DAC) designed to operate from a single 2.7 V to 5.5 V supply.
The applied external reference input voltage VREF determines the full-scale output current. An internal feedback resistor (RFB) provides temperature tracking for the full-scale output when combined with an external I-to-V precision amplifier.
A doubled-buffered, serial data interface offers high-speed, 3-wire, SPI and microcontroller compatible inputs using serial data in (SDI), clock (CLK), and a chip-select (CS). A common level-sensitive load DAC strobe (LDAC) input allows simultaneous update of all DAC outputs from previously loaded input registers. Additionally, an internal power-on reset forces the output voltage to zero at system turn-on. An MSB pin allows system reset assertion (RS) to force all registers to zero code when MSB = 0, or to half-scale code when MSB = 1.
The DAC8802 is available in an TSSOP-16 package.

特性 Features

• Relative Accuracy: 1 LSB Max
• 2-mA Full-Scale Current ±20%, with VREF = ±10 V
• Midscale or Zero-Scale Reset
• Reference Bandwidth: 10 MHz
• SPI™-Compatible 3-Wire Interface: 50 MHz
• Internal Power-On Reset
• APPLICATIONS
• Instrumentation
• Digitally Controlled Calibration
SPI is a trademark of Motorola, Inc. All other trademarks are the property of their respective owners.