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DAC5573IPW Folha de dados(PDF) 10 Page - Texas Instruments |
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DAC5573IPW Folha de dados(HTML) 10 Page - Texas Instruments |
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10 / 26 page  Features 1-2 1.1 Features This EVM features the DAC7573, DAC6573 and DAC5573 family of digital - to - analog converters. In this user’s guide, the EVM is referred to as the DACx573 EVM to cover all supported DAC parts. The DACx573 EVM provides a quick and easy way to evaluate the functionality and performance of these 12 - bit, 10- bit, and 8- bit resolution, quad - channel, and serial I2C-input DACs. The following table shows the three DAC types this EVM supports. The EVM also provides an I2C serial interface to communicate with any host microprocessor- or TI DSP-based system. Table 1 - 1. Featured DAC Selections EVM Version Installed Device (DUT) DAC Channels Resolution DAC7573 EVM DAC7573IPW 4 12-Bit DAC6573 EVM DAC6573IPW 4 10-Bit DAC5573 EVM DAC5573IPW 4 8-Bit 1.2 Power Requirements This section describes the power requirements of this EVM. 1.2.1 Supply Voltage The power supply requirement for the digital section (VDD) of this EVM is typically 5 V, connected via J5-1 or J6-10 when used with another EVM or interface card. It is referenced to ground through the J5-2 and J6 - 5 terminals. The power supply requirements for the analog section of this EVM are as follows: VCC and VSS range from 15.75 V to -15.75 V maximum, and connects through J1-3 and J1-1 respectively, or through the J6-1 and J6-2 termi- nals. The 5-VA supply connects through J5-3 or J6-3 and the 3.3-VA supply con- nects through J6-8. All analog power supplies are referenced to analog ground through the J1-2 and J6-6 terminals. The analog power supply for the device under test (DUT), U1, can be supplied by either 5 VA or 3.3 VA via jumper W1. This allows the DACx573 analog section to operate from either supply while the I/O and digital section is powered by 5 V, VDD. The VCC supply is mainly used as the positive rail of the external output operational amplifier (op amp), U2, the reference chip, U3, and the reference buffer, U8. The negative rail of the output op amp, U2, can be selected between VSS and AGND via jumper W5. The external op amp is installed as an option to provide output signal conditioning, to boost capacitive load drive (via W15), and for other output-mode requirements. |
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