LTC1668 LINER [Linear Technology], LTC1668 Datasheet
LTC1668
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LTC1668 Summary of contents
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... Alternatively, the outputs can be connected to the summing junction of a high speed operational amplifier transformer. The LTC1668 is available in a 28-pin SSOP and is fully specified over the industrial temperature range. , LTC and LT are registered trademarks of Linear Technology Corporation. 0.1 F ...
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... OUT A OUT B SS Power Dissipation ............................................. 500mW Operating Temperature Range LTC1668C .............................................. LTC1668I ........................................... – Storage Temperature Range ................ – 150 C Lead Temperature (Soldering, 10 sec).................. 300 C ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T SYMBOL PARAMETER DC Accuracy (Measured at I ...
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... CLK OUT f = 25Msps 1MHz, 2MHz Span CLK OUT f = 50Msps 5MHz, 4MHz Span CLK OUT f = 25Msps 1MHz CLK OUT f = 50Msps 5MHz CLK OUT LTC1668 = 10mA. OUTFS MIN TYP MAX UNITS 20 kHz 4.75 5 5.25 V – 4.75 – 5 – 5. 180 mW 85 ...
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... LTC1668 W U TYPICAL PERFOR A CE CHARACTERISTICS Single Tone SFDR –5 –15 –25 –35 –45 –55 –65 –75 –85 –95 –105 0.05 FREQUENCY (1.25MHz/DIV) Integral Nonlinearity –1 –2 –3 –4 –5 16384 32768 DIGITAL INPUT CODE CTIO S REFOUT (Pin 15): Internal Reference Voltage Output. ...
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... DB0 CLOCK 16-BIT INPUT DATA INPUT DB0 N – CLK t t CLKL CLKH – OUT B LTC1668 LADCOM 18 52.3 52 OUT OUT 1V I P-P 19 OUT B – DIFFERENTIAL • • • 1668 0.1% 1668 TD 5 ...
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... U U APPLICATIO S I FOR ATIO Theory of Operation The LTC1668 is a high speed current steering 16-Bit DAC made on an advanced BiCMOS process. Precision thin film resistors and well matched bipolar transistors result in excellent DC linearity and stability. A low glitch current switching design gives excellent AC performance at sample rates up to 50Msps ...
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... IOUT A IOUT B The LTC1668 is specified to operate with full-scale output current, I This can be useful to reduce power dissipation or to adjust full-scale value. However, that the LTC1668 DC and AC accuracy is specified only accuracy will fall off significantly at lower I ), plus any At I OUTFS OUTFS ...
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... SFDR and THD due to increased INL and DNL. Output Configurations Based on the specific application requirements, the LTC1668 allows a choice of the best of several output configurations. Voltage outputs can be generated by ex- ternal load resistors, transformer coupling or with an op amp I-to-V converter. Single-ended DAC output configu- rations use only one of the outputs, preferably I produce a single-ended voltage output ...
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... I is preferred OUT B Digital Interface The LTC1668 has 16 parallel inputs that are latched on the rising edge of the clock input. They accept CMOS levels from either 5V or 3.3V logic and can accept clock rates 50MHz. Referring to the Timing Diagram and Block Diagram, the data inputs go to master-slave latches that update on the rising edge of the clock ...
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... Figures are the printed circuit board layers for an AC evaluation circuit for the LTC1668. Ground planes should be split between digital and analog sections as shown. All bypass capacitors should have minimum trace length and be ceramic 0 ...
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... U U APPLICATIO S I FOR ATIO W U LTC1668 11 ...
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... LTC1668 U U APPLICATIO S I FOR ATIO Figure 5. Suggested Evaluation Circuit Board—Silkscreen Figure 6. Suggested Evaluation Circuit Board—Component Side ...
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... U U APPLICATIO S I FOR ATIO Figure 7. Suggested Evaluation Circuit Board—GND Plane Figure 8. Suggested Evaluation Circuit Board—Power Plane W U LTC1668 13 ...
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... LTC1668 U U APPLICATIO S I FOR ATIO Figure 9. Suggested Evaluation Circuit Board—Solder Side ...
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... DWG # 05-08-1640 – 8 0.65 (0.0256) BSC 0.25 – 0.38 (0.010 – 0.015) LTC1668 10.07 – 10.33* (0.397 – 0.407 7.65 – 7.90 (0.301 – 0.311 1.73 – 1.99 (0.068 – 0.078) 0.05 – 0.21 (0.002 – 0.008) ...
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... ADC LTC1414 14-Bit, 2.2Msps ADC LTC1420 12-Bit, 10Msps ADC LTC1604 16-Bit, 333ksps ADC Linear Technology Corporation 16 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 www.linear-tech.com 5V 0 LTC1668 DD I OUT A 16-BIT HIGH SPEED I DAC OUT B LADCOM 52.3 CLK DB15 DB0 ...