LT1790 Linear Technology, LT1790 Datasheet
LT1790
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LT1790 Summary of contents
Page 1
... This reference provides supply current and power dissipation advantages over shunt references that must idle the entire load current to operate. However, since the LT1790-2.5 can also sink current, it can operate as a micropower negative voltage reference with the same performance as a positive reference. ...
Page 2
... – Note 4: ESD (Electrostatic Discharge) sensitive device. Extensive use of ESD protection devices are used internal to the LT1790, however, high electrostatic discharge can damage or degrade the device. Use proper ESD handling precautions INFORMATION ...
Page 3
... Load Regulation (Sinking – 125 0 OUTPUT CURRENT (mA) 1790 617 LT1790-2.5 Minimum Input-Output Voltage Differential (Sinking) Series Mode 100 A 10 1mA 5mA –10 –30 –50 –30 – 110 130 30 70 ...
Page 4
... Power Supply Rejection Ratio vs Frequency –10 –20 –30 –40 –50 –60 –70 –80 100 1k 10k 100k FREQUENCY (Hz) 140 R1 10k 120 3V 4 100 LT1790-2 OUT – – 125 –55 C –40 A – ...
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... F, although larger values work as well. This capacitor affects the turn-on and settling time for the output to reach its final value. Figure 1 shows the turn-on time for the LT1790-2.5 with input bypass and 1 F load capacitor. Figure 2 shows the output response to a 0.5V transient on V same capacitors ...
Page 6
... The only way long-term drift can be determined is to mea- 1790 F06 sure it over the time interval of interest. The LT1790S6 drift data was taken on over 100 parts that were soldered into PC boards similar to a “real world” application. The ...
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... 110 130 –100 –80 1790 F08 Figure 9. Worst-Case – Hysteresis on 44 Units LT1790-2.5 – –60 –40 – 100 HYSTERESIS (ppm OUT 1, 2 GND 1790 SS 120 ...
Page 8
... McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 www.linear-tech.com – 2.5V Negative 50mA Series Reference No Load Supply Current I = 1.6mA 440 LT1790 –5V EE MPS2907A U Dimensions in inches (millimeters) unless otherwise noted. S6 Package 6-Lead Plastic SOT-23 (LTC DWG # 05-08-1634) 0.00 – ...