 |
Zakładka z wyszukiwarką danych komponentów |
|
|
Zakładka z wyszukiwarką danych komponentów |
|
REF5010 Arkusz danych(PDF) 10 Page - Texas Instruments |
|
|
|||||||||||||||||||||||||||||
REF5010 Arkusz danych(HTML) 10 Page - Texas Instruments |
|
|
10 / 28 page  DNC TEMP V OUT V IN GND DNC NC TRIM/NR REF50xx C1 1 F m +V SUPPLY 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 DNC TEMP V OUT V IN GND DNC NC TRIM/NR REF50xx +V SUPPLY 10kW 1kW 470kW R5 60kW REF50xx TEMP V OUT GND TRIM/NR V IN aT aT (10 A m at+25 C) ° R2 R1 R3 R4 10kW 1kW 1.2V REF5010, REF5020 REF5025, REF5030 REF5040, REF5045, REF5050 SBOS410F – JUNE 2007 – REVISED DECEMBER 2013 www.ti.com APPLICATION INFORMATION requirement of 2.7V, these references can be The REF50xx is family of low-noise, precision operated with a supply of 200mV above the output bandgap voltage references that are specifically voltage in an unloaded condition. For loaded designed for excellent initial voltage accuracy and conditions, a typical dropout voltage versus load plot drift. Figure 28 shows a simplified block diagram of is shown in Figure 6 of the Typical Characteristics. the REF50xx. OUTPUT ADJUSTMENT USING THE TRIM/NR 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 30 shows a typical circuit that allows an output adjustment of ±15mV Figure 28. REF50xx Simplified Block Diagram BASIC CONNECTIONS Figure 30. VOUT Adjustment Using the TRIM/NR Figure 29 shows the typical connections for the Pin REF50xx. A supply bypass capacitor ranging between 1 μF to 10μF is recommended. A 1μF to The REF50xx allows access to the bandgap through 50 μF output capacitor (CL) must be connected from the TRIM/NR pin. Placing a capacitor from the VOUT to GND. The ESR value of CL must be less than TRIM/NR pin to GND (see Figure 31) in combination or equal to 1.5 Ω to ensure output stability. To with the internal R3 and R4 resistors creates a low- minimize noise, the recommended ESR of CL is pass filter. A capacitance of 1 μF creates a low-pass between 1 Ω and 1.5Ω. 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 29. Basic Connections SUPPLY VOLTAGE The REF50xx family of voltage references features Figure 31. Noise Reduction Using the TRIM/NR extremely low dropout voltage. With the exception of Pin the REF5020, which has a minimum supply 10 Submit Documentation Feedback Copyright © 2007–2013, Texas Instruments Incorporated Product Folder Links: REF5010 REF5020 REF5025 REF5030 REF5040 REF5045 REF5050 |
|
Link URL |
| Czy Alldatasheet okazała się pomocna? [ DONATE ] |
O Alldatasheet | Reklama | Kontakt | Polityka prywatności | Link do karty katalogowej | Linki | Lista producentów 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 |
Polish ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
