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LTC2704

Linear Technology
Part Number LTC2704
Manufacturer Linear Technology
Description Voltage Output SoftSpan DACs
Published Jan 2, 2009
Detailed Description FEATURES n Six Programmable Output Ranges: Unipolar: 0V to 5V, 0V to 10V Bipolar: ±5V, ±10V, ±2.5V, –2.5V to 7.5V n Seri...
Datasheet PDF File LTC2704 PDF File

LTC2704
LTC2704

Overview
FEATURES n Six Programmable Output Ranges: Unipolar: 0V to 5V, 0V to 10V Bipolar: ±5V, ±10V, ±2.
5V, –2.
5V to 7.
5V n Serial Readback of All On-Chip Registers n 1LSB INL and DNL Over the Industrial Temperature Range (LTC2704-14/LTC2704-12) n Force/Sense Outputs Enable Remote Sensing n Glitch Impulse: < 2nV-sec n Outputs Drive ±5mA n Pin Compatible 12-, 14- and 16-Bit Parts n Power-On and Clear to Zero Volts n 44-Lead SSOP Package APPLICATIONS n Process Control and Industrial Automation n Direct Digital Waveform Generation n Software Controlled Gain Adjustment n Automated Test Equipment LTC2704 Quad 12-, 14- and 16-Bit Voltage Output SoftSpan DACs with Readback DESCRIPTION The LTC®2704-16/LTC2704-14/LTC2704-12 are serial input, 12-, 14- or 16-bit, voltage output SoftSpan™ DACs that operate from 3V to 5V logic and ±5V to ±15V analog supplies.
SoftSpan offers six output spans—two unipolar and four bipolar—fully programmable through the 3-wire SPI serial interface.
INL is accurate to 1LSB (2LSB for the LTC2704-16).
DNL is accurate to 1LSB for all versions.
Readback commands allow verification of any on-chip register in just one 24- or 32- bit instruction cycle.
All other commands produce a “rolling readback” response from the LTC2704, dramatically reducing the needed number of instruction cycles.
A Sleep command allows any combination of DACs to be powered down.
There is also a reset flag and an offset adjustment pin for each channel.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation.
SoftSpan is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
BLOCK DIAGRAM AGND V+1 32 42 V– REFM1 REFG1 REF1 REF2 REFG2 REFM2 V+2 1,8,15,22,31,36 44 2 43 24 21 23 25 VOSB 40 27 VOSC C1B 39 28 C1C RFBB 37 30 RFBC DAC B DAC C OUTB 38 29 OUTC AGNDB 41 –1 –1 26 AGNDC VOSA 4 19 VOSD C1A 5 RFBA 7 OUTA 6 DAC A DAC D 18 C1D 16 RFBD 17 OUTD AGNDA 3 33 ...


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