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DAC1282A

Texas Instruments
Part Number DAC1282A
Manufacturer Texas Instruments
Description Low Distortion Digital-to-Analog Converter
Published Mar 16, 2020
Detailed Description Product Folder Sample & Buy Technical Documents Tools & Software Support & Community DAC1282, DAC1282A SBAS490B – D...
Datasheet PDF File DAC1282A PDF File

DAC1282A
DAC1282A

Overview
Product Folder Sample & Buy Technical Documents Tools & Software Support & Community DAC1282, DAC1282A SBAS490B – DECEMBER 2011 – REVISED MAY 2015 DAC1282 Low Distortion Digital-to-Analog Converter for Seismic 1 Features •1 Single-Chip Test Signal Generator • Buffered Voltage Output • High Performance: – THD: –125 dB (G = 1/1 to 1/8) – SNR: 120 dB (413 Hz BW, G = 1/1) • Analog and Digital Gain Control • Output Frequency: 0.
488 Hz to 250 Hz • Sine, Pulse, and DC Modes • Digital Data Input Mode • Low On-Resistance Signal Switch • Sync Input • Power-Down Mode • Analog Supply: 5 V or ±2.
5 V • Digital Supply: 1.
8 V to 3.
3 V • Power: 38 mW • Package: TSSOP-24 • Operating Range: –50°C to +125°C 2 Applications • Energy Exploration • Seismic Monitoring Systems • High-Accuracy Instrumentation 3 Description The DAC1282 is a fully-integrated digital-to-analog converter (DAC) providing low distortion, digital synthesized voltage output suitable for testing of seismic equipment.
The DAC1282 achieves very high performance in a small package with low power.
Together, with the high-performance ADS1281 and ADS1282 analog-to-digital converters (ADCs), these devices create a measurement system that meets the exacting demands of seismic data acquisition equipment.
The DAC1282 integrates a digital signal generator, a DAC, and an output amplifier providing sine wave, dc, and pulse output voltages.
The output frequency is programmable from 0.
5 Hz to 250 Hz and the magnitude is scaled by both analog and digital control.
The analog gain is adjustable in 6dB steps and the digital gain in 0.
5-dB steps.
The analog gain settings match those of the ADS1282 for testing at all gains with high resolution.
The DAC1282 also provides pulse outputs.
The pulse amplitude is user-programmed and then selected by the pin for precise timing.
Custom output signals can be generated by applying an external bitstream pattern.
A signal switch can be used to connect the DAC output to sensors for THD and impu...


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