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DAC8881 Scheda tecnica(PDF) 1 Page - Texas Instruments |
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DAC8881 Scheda tecnica(HTML) 1 Page - Texas Instruments |
1 / 34 page BurrBrown Products from Texas Instruments DAC8881 1 FEATURES DESCRIPTION APPLICATIONS R FB (1) Control Logic DV DD DGND IOV DD AGND AV DD V -S REFH V -F REFH RST RSTSEL USB/BTC GAIN SDI CS SCLK Input Register DAC Latch LDAC V -S REFL V -F REFL Resistor Network DAC NOTE:(1) R =5k forgain=1, W FB R =10k forgain=2. W FB DAC8881 SerialOut Control SDOSEL SDO Power-On Reset PDN V OUT R FB DAC8881 SBAS422A – JULY 2007 – REVISED SEPTEMBER 2007 16-Bit, Single-Channel, Low-Noise, Voltage-Output DIGITAL-TO-ANALOG CONVERTER 2345 • Relative Accuracy: ±0.5 LSB The DAC8881 is a 16-bit, single-channel, voltage-output digital-to-analog converter (DAC) that • 16-Bit Monotonic Over Temperature Range offers low-power operation and a flexible SPI serial • Low-Noise: 24nV/√Hz interface. It also features 16-bit monotonicity, • Fast Settling: 5μs excellent linearity, and fast settling time. The on-chip • On-Chip Output Buffer Amplifier with precision output amplifier allows rail-to-rail output swing to be achieved over the full supply range of Rail-to-Rail Operation 2.7V to 5.5V. • Wide, Single Power Supply: +2.7V to +5.5V The device supports a standard SPI serial interface • DAC Loading Control capable of operating with input data clock frequencies • Selectable Power-On Reset to Zero-Scale or up to 50MHz. The DAC8881 requires an external Midscale reference voltage to set the output range of the DAC • Power-Down Mode channel. A programmable power-on reset circuit is also incorporated into the device to ensure that the • Unipolar Straight Binary or DAC output powers up at zero-scale or midscale, and 2's Complement Input Mode remains there until a valid write command. • Fast SPI™ Interface with Schmitt-Triggered Additionally, the device has the capability to function Inputs: in either unipolar straight binary or 2's complement Up To 50MHz, 1.8V/3V/5V Logic mode. The DAC8881 provides a power-down feature, • Small Package: QFN-24, 4x4mm accessed over the PDN pin, that reduces the current consumption to 25 μA at 5V. Power consumption is 6mW at 5V, reducing to 125 μW in power-down mode. • Industrial Process Control The DAC8881 is available in a 4x4mm QFN-24 • Data Acquisition Systems package with a specified operating temperature range • Automatic Test Equipment of –40°C to +105°C. • Communications • Optical Networking 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 DSP is a trademark of Texas Instruments. 3 SPI, QSPI are trademarks of Motorola, Inc. 4 MICROWIRE is a trademark of National Semiconductor. 5 All other trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2007, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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