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DAC7716SPFBR Datasheet(PDF) 1 Page - Texas Instruments |
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DAC7716SPFBR Datasheet(HTML) 1 Page - Texas Instruments |
1 / 41 page DAC7716 DAC7716 1 FEATURES DESCRIPTION APPLICATIONS Power-Down ControlLogic CS SCLK SDI SDO IOV DD RST UNI/BIP-A UNI/BIP-B LDAC GPIO-0 GPIO-1 AIN DAC7716 ReferenceBufferA V MON R -0 FB1 R -0 FB2 V -0 OUT SGND-0 12-BitDAC SPI Shift Register Input Control Logic Control Logic DGND DV DD DACRegister0 ZeroRegister0 GainRegister0 AGND AV DD AV SS REF-A REFGND-A Analog Monitor ReferenceBufferB REF-B REFGND-B R -1 FB1 R -1 FB2 V -1 OUT SGND-1 12-BitDAC DACRegister1 ZeroRegister1 GainRegister1 R -2 FB1 R -2 FB2 V -2 OUT SGND-2 12-BitDAC DACRegister2 ZeroRegister2 GainRegister2 R -3 FB1 R -3 FB2 V -3 OUT SGND-3 12-BitDAC DACRegister3 ZeroRegister3 GainRegister3 CommandRegister DAC7716 www.ti.com ........................................................................................................................................... SBAS463A – AUGUST 2009 – REVISED SEPTEMBER 2009 Quad, 12-Bit, High-Accuracy, ±16V Output, Serial Input DIGITAL-TO-ANALOG CONVERTER 2345 • Bipolar Output: Up to ±16V The DAC7716 is a high-accuracy, quad-channel, 12-bit digital-to-analog converter (DAC) that operates • Unipolar Output: 0V to +20V from supply voltages of ±5V to ±18V in bipolar output • 12-Bit Monotonic mode, and from ±5V to +24V/–12V in unipolar mode. • Relative Accuracy: 1 LSB Max With a 5V reference, the DAC7716 can be configured • Low Zero and Gain Errors to output ±10V, ±5V, 0V to 20V, or 0V to 10V. The DAC7716 provides 12-bit monotonicity, excellent – Before User Calibration: 0.5 LSB integral nonlinearity (INL) error of ±1 LSB, low glitch, – After User Calibration: and low noise over the operating temperature range 0.0078 LSB Zero Error, 0.0625 LSB Gain of –40°C to +105°C. This device is trimmed in Error production for very low zero and gain errors. In addition, the DAC7716 implements a • Low Noise: 60nV/√Hz user-programmable system-level calibration function • Settling Time: 6µs to achieve ±0.0078 LSB zero error and ±0.0625 LSB • Configurable Gain: x2/x4 gain error. • Analog Output Monitor The DAC7716 has integrated reference buffers and • Power-Down Mode output buffers. It features a standard high-speed 1.8V, 3V, or 5V serial peripheral interface (SPI) that • SPI™: Up to 50MHz, 1.8V/3V/5V Logic operates at clock rates of up to 50MHz to • Daisy-Chain Mode communicate with a DSP or microprocessor. The four • Operating Temperature: –40°C to +105°C DAC channels and the auxiliary registers are addressed with four address bits. The device features • Packages: QFN-40 (6x6mm), TQFP-48 (7x7mm) double-buffered interface logic for simultaneous updates of all DACs. An asynchronous load input (LDAC) transfers data from the input data register to • Automatic Test Equipment the DAC latch, and the contents of the DAC latch set • Instrumentation the output voltage. The asynchronous RST input sets • Industrial Process Control the output of all four DACs to 0V. The VMON pin is an analog monitor output that multiplexes the individual • Communications DAC outputs or the AIN pin. The DAC7716 is pin-compatible with the DAC8734 (16-bit) and the DAC8234 (14-bit). 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 © 2009, 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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