LT6654 Linear Technology, LT6654 Datasheet
LT6654
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LT6654 Summary of contents
Page 1
... Low thermal hysteresis ensures high accuracy and 1.6ppm P-P Since the LT6654 can also sink current, it can operate as a low power negative voltage reference with the same precision as a positive reference. The LT6654 is offered in a 6-lead SOT-23 package. ...
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... TEMPERATURE COEFFICIENT 0.05% 10ppm/°C 0.1% 20ppm/°C l The denotes the specifi cations which apply over the full operating = 25° 1μF and CONDITIONS LT6654A LT6654B LT6654A LT6654B V + 0.5V ≤ V ≤ 36V OUT IN TOP VIEW GND OUT GND 2 5 DNC ...
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... Note 9: The stated temperature is typical for soldering of the leads during manual rework. For detailed IR refl ow recommendations, refer to the Applications Information section. LT6654 + 0.5V, unless otherwise noted ppm/mA ...
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... LT6654 TYPICAL PERFORMANCE CHARACTERISTICS Output Voltage Temperature Drift 2.502 THREE TYPICAL PARTS 2.501 2.500 2.499 2.498 –70 –50 –30 – 110 130 TEMPERATURE (°C) 6654 G01 Load Regulation (Sourcing) 10 25°C 0 –40°C 125°C –10 –20 –30 –40 ...
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... T = 35° –20 –40 –60 –80 –100 0 100 200 300 400 500 600 700 800 900 TIME (HOURS) LT6654 Output Impedance vs Frequency 100 10μ 0 100 FREQUENCY (kHz) 6654 G11 Load Transient Response (Sourcing) I OUT 0mA ...
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... LT6654 PIN FUNCTIONS GND (Pin 1): Internal Function. This pin must be tied to ground. GND (Pin 2): Primary Device Ground. DNC (Pin 3): Do Not Connect. Keep leakage current from this pin GND to a minimum (Pin 4): Power Supply. Bypass V IN capacitor to ground. BLOCK DIAGRAM ...
Page 7
... 0.1μF Figure 3. Response Time Test Circuit Figure 1 shows the turn-on time for the LT6654-2.5 with a 0.1μF input bypass and 1μF load capacitor. Figure 2 shows the output response to a 0.5V transient on V same capacitors. The test circuit of Figure 3 is used to measure the stability with various load currents ...
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... LT6654 APPLICATIONS INFORMATION Positive or Negative Operation The LT6654 can be operated in series mode negative voltage reference. A typical series connection is shown on the front page of this data sheet. The circuit in Figure 7 shows an LT6654 confi gured for negative operation. In this confi guration, a positive volt- ...
Page 9
... Figure 9. While there can 0.014% of output voltage shift, the overall drift of the LT6654 after IR refl ow does not vary signifi cantly. Power Dissipation The power dissipation in the LT6654 is dependent on V load current and the package. The LT6654 package has a thermal resistance, or θ ...
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... I OUT UP TO 100mA 1μF Boosted Output Current Reference < 36V IN 4.7μF 220Ω 2N2905 IN I OUT LT6654-2.5 OUT UP TO 300mA 1μF 6654 TA03 Octal DAC Reference LT6654-2.5 IN OUT V 0.1μF 10μ REF CC CS DAC A SCK DAC B LTC2600 SDI DAC C CLEAR DAC D ...
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... S6 Package 6-Lead Plastic TSOT-23 (Reference LTC DWG # 05-08-1636) 1.22 REF 1.50 – 1.75 2.80 BSC 1.4 MIN (NOTE 4) 0.95 BSC 0.80 – 0.90 1.00 MAX 0.09 – 0.20 (NOTE 3) LT6654 2.90 BSC (NOTE 4) PIN ONE ID 0.30 – 0.45 6 PLCS (NOTE 3) 0.01 – 0.10 1.90 BSC S6 TSOT-23 0302 REV B 11 6654f ...
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... Tiny Micropower Series Reference LTC6655 Precision Low Noise Reference LT6656 800nA Precision Voltage Reference Linear Technology Corporation 12 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● 12-Bit ADC Reference LT6654-2.5 IN OUT 0.1μF 22μF REF SDO SCK LTC2301 CS REF COMP 0.1μF 10μ ...