Electronic Components Datasheet Search |
|
REF5025ID Datasheet(PDF) 9 Page - Texas Instruments |
|
|
REF5025ID Datasheet(HTML) 9 Page - Texas Instruments |
9 / 20 page APPLICATION INFORMATION SUPPLY VOLTAGE OUTPUT ADJUSTMENT USING THE TRIM/NR R5 60kW REF50xx TEMP V OUT GND TRIM/NR V IN a T a T (10 A m at+25 C) ° R2 R1 R3 R4 10kW 1kW 1.2V BASIC CONNECTIONS DNC TEMP V OUT V IN GND DNC NC TRIM/NR REF50xx +V SUPPLY 10kW 1kW 470kW DNC TEMP V OUT V IN GND DNC NC TRIM/NR REF50xx C BYPASS 1 Fto10 F m m C L 1 Fto50 F m m +V SUPPLY V OUT REF5010 ,, REF5020 REF5025, REF5030 REF5040, REF5045, REF5050 www.ti.com.................................................................................................................................................. SBOS410C – JUNE 2007 – REVISED DECEMBER 2008 The REF50xx is family of low-noise, precision bandgap voltage references that are specifically designed for excellent initial voltage accuracy and The REF50xx family of voltage references features drift. Figure 21 shows a simplified block diagram of extremely low dropout voltage. With the exception of the REF50xx. the REF5020, which has a minimum supply requirement of 2.7V, these references can be operated with a supply of 200mV above the output voltage in an unloaded condition. For loaded conditions, a typical dropout voltage versus load plot is shown in Figure 6 of the Typical Characteristics. PIN The REF50xx provides a very accurate, factory-trimmed voltage output. However, VOUT can be adjusted using the trim and noise reduction pin (TRIM/NR, pin 5). Figure 23 shows a typical circuit that allows an output adjustment of ±15mV Figure 21. REF50xx Simplified Block Diagram Figure 22 shows the typical connections for the REF50xx. A supply bypass capacitor ranging between 1 µF to 10µF is recommended. A 1µF to 50 µF output capacitor (C L) must be connected from VOUT to GND. The ESR value of CL must be less than or equal to 1.5 Ω to ensure output stability. To Figure 23. VOUT Adjustment Using the TRIM/NR minimize noise, the recommended ESR of CL is Pin between 1 Ω and 1.5Ω. The REF50xx allows access to the bandgap through the TRIM/NR pin. Placing a capacitor from the TRIM/NR pin to GND (see Figure 24) in combination with the internal R3 and R4 resistors creates a low-pass filter. A capacitance of 1 µF creates a low-pass filter with the corner frequency between 10Hz and 20Hz. Such a filter decreases the overall noise measured on the VOUT pin by half. Higher capacitance results in a lower filter cutoff frequency, further reducing output noise. Note that use of this capacitor increases startup time. Figure 22. Basic Connections Copyright © 2007–2008, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Link(s): REF5010 REF5020 REF5025 REF5030 REF5040 REF5045 REF5050 |
Similar Part No. - REF5025ID |
|
Similar Description - REF5025ID |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |