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LTC1821

Linear
Part Number LTC1821
Manufacturer Linear
Description Fast Settling Vout DAC
Published Apr 7, 2016
Detailed Description U U FEATURES s 2µs Settling to 0.0015% for 10V Step s 1LSB Max DNL and INL Over Industrial Temperature Range s On-Chip ...
Datasheet PDF File LTC1821 PDF File

LTC1821
LTC1821

Overview
U U FEATURES s 2µs Settling to 0.
0015% for 10V Step s 1LSB Max DNL and INL Over Industrial Temperature Range s On-Chip 4-Quadrant Resistors Allow Precise 0V to 10V, 0V to –10V or ±10V Outputs s Low Glitch Impulse: 2nV•s s Low Noise: 13nV/√Hz s 36-Lead SSOP Package s Power-On Reset s Asynchronous Clear Pin LTC1821: Reset to Zero Scale LTC1821-1: Reset to Midscale U APPLICATIO S s Process Control and Industrial Automation s Precision Instrumentation s Direct Digital Waveform Generation s Software-Controlled Gain Adjustment s Automatic Test Equipment LTC1821 16-Bit, Ultra Precise, Fast Settling VOUT DAC DESCRIPTIO The LTC®1821 is a parallel input 16-bit multiplying voltage output DAC that operates from analog supply voltages of ±5V up to ±15V.
INL and DNL are accurate to 1LSB over the industrial temperature range in both unipolar 0V to 10V and bipolar±10Vmodes.
Precise16-bitbipolar ±10Voutputsare achieved with on-chip 4-quadrant multiplication resistors.
The LTC1821 is available in a 36-lead SSOP package and is specified over the industrial temperature range.
The device includes an internal deglitcher circuit that reduces the glitch impulse to less than 2nV•s (typ).
The LTC1821 settles to 1LBS in 2µs with a full-scale 10V step.
The combination of fast, precise settling and ultra low glitch make the LTC1821 ideal for precision industrial control applications.
The asynchronous CLR pin resets the LTC1821 to zero scale and resets the LTC1821-1 to midscale.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO 16-Bit, 4-Quadrant Multiplying DAC with a Minimum of External Components VREF –VREF 3+ LT®1468 2– 6 15pF 5V 0.
1µF 15pF 10 9 R1 RCOM 8 2 11 REF VCC ROFS 12 14 RFB IOUT 16 DATA INPUTS R1 R2 LTC1821-1 ROFS RFB 16-BIT DAC – + 3 TO 6, 25 TO 36 WR LD CLR WR 24 23 7 LD CLR DNC* DNC* DNC* NC DGND 18 19 21 22 1 AGNDF AGNDS 17 16 *DO NOT CONNECT V+ 15 13 VOUT V– 20 15V 0.
1µF VREF VOUT = –VREF –15V 0.
1µF 1821 TA01 I...


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