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LTC1257

Linear Technology
Part Number LTC1257
Manufacturer Linear Technology
Description Complete Single Supply 12-Bit Voltage Output DAC
Published Mar 22, 2005
Detailed Description FEATURES n 8-Pin SO Package n Buffered Voltage Output n Built-In 2.048V Reference n 500µV/LSB with 2.048V Full Scale ...
Datasheet PDF File LTC1257 PDF File

LTC1257
LTC1257


Overview
FEATURES n 8-Pin SO Package n Buffered Voltage Output n Built-In 2.
048V Reference n 500µV/LSB with 2.
048V Full Scale n 1/2LSB Max DNL Error n Guaranteed 12-Bit Monotonic n 3-Wire Cascadable Serial Interface n Wide Single Supply Range: VCC = 4.
75V to 15.
75V n Low Power: ICC Typ = 350µA with 5V Supply APPLICATIONS n Digital Offset/Gain Adjustment n Industrial Process Control n Automatic Test Equipment LTC1257 Complete Single Supply 12-Bit Voltage Output DAC in SO-8 DESCRIPTION The LTC®1257 is a complete single supply, 12-bit voltage output D/A converter (DAC) in an SO-8 package.
The LTC1257 includes an output buffer amplifier, 2.
048V voltage reference and an easy to use 3-wire cascadable serial interface.
An external reference can be used to override the internal reference and extend the output voltage range to 12V.
The power supply current is a low 350µA when operating from a 5V supply, making the LTC1257 ideal for battery-powered applications.
The space-saving 8-pin SO package and operation with no external components provide the smallest 12-bit D/A system available.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATION Daisy-Chained Control Outputs 5V 0.
1µF CONTROL OUTPUT 1 VOUT VCC DIN LTC1257 CLK LOAD GND VREF DOUT µP 0.
1µF CONTROL OUTPUT 2 VOUT VCC DIN LTC1257 CLK LOAD GND VREF DOUT TO NEXT DAC 1257 TA01 DNL ERROR (LSBs) Differential Nonlinearity vs Input Code 0.
5 0.
0 –0.
5 0 512 1024 1536 2048 2560 3072 3584 4098 CODE 1257 TA05 1257fc 1 LTC1257 ABSOLUTE MAXIMUM RATINGS (Note 1) VCC to GND.
–0.
5V to 16.
5V TTL Input Voltage .
.
–0.
5V to VCC + 0.
5V VOUT.
.
.
.
–0.
5V to VCC + 0.
5V REF –0.
5V to VCC + 0.
5V Operating Temperature Rang...


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