Electronic Components Datasheet Search |
|
REF5025MDTEP Datasheet(PDF) 11 Page - Texas Instruments |
|
|
REF5025MDTEP Datasheet(HTML) 11 Page - Texas Instruments |
11 / 29 page DNC TEMP V OUT V IN GND DNC NC TRIM/NR REF50xx V TEMP 2.6mV/ C ° OPA(1) NOTE:(1)Lowdriftopamp,suchastheOPA333,OPA335,orOPA376. +V 6 OUTMAX OUTMIN OUT V V Drift 10 (ppm) V Temp Range æ ö - = ´ ç ÷ ´ è ø REF5020-EP, REF5025-EP, REF5040-EP, REF5050-EP www.ti.com SBOS471B – APRIL 2010 – REVISED JUNE 2015 Feature Description (continued) 7.3.2 Low Temperature Drift The REF50xx is designed for minimal drift error, which is defined as the change in output voltage over temperature. The drift is calculated using the box method, as described by Equation 1: (1) The REF50xx features a maximum drift coefficient of 3 ppm/°C for the high-grade version, and 8 ppm/°C for the standard-grade. 7.3.3 Temperature Monitoring The temperature output terminal (TEMP, pin 3) provides a temperature-dependent voltage output with approximately 60-k Ω source impedance. As seen in Figure 8, the output voltage follows the nominal relationship: VTEMP PIN = 509 mV + 2.64 × T(°C) (2) This pin indicates general chip temperature, accurate to approximately ±15°C. Although it is not generally suitable for accurate temperature measurements, it can be used to indicate temperature changes or for temperature compensation of analog circuitry. A temperature change of 30°C corresponds to an approximate 79 mV change in voltage at the TEMP pin. The TEMP pin has high output impedance (see Functional Block Diagram). Loading this pin with a low- impedance circuit induces a measurement error; however, it does not have any effect on VOUT accuracy. To avoid errors caused by low-impedance loading, buffer the TEMP pin output with a suitable low-temperature drift operational amplifiers, such as the OPA333, OPA335, or OPA376, as shown in Figure 23. Figure 23. Buffering the TEMP Pin Output 7.3.4 Noise Performance Typical 0.1-Hz to 10-Hz voltage noise for each member of the REF50xx family is specified in the Electrical Characteristics: Per Device table. The noise voltage increases with output voltage and operating temperature. Additional filtering can be used to improve output noise levels, although take care to ensure the output impedance does not degrade performance. For additional information about how to minimize noise and maximize performance in mixed-signal applications such as data converters, refer to the series of Analog Applications Journal articles entitled, How a Voltage Reference Affects ADC Performance. This three-part series is available for download from the TI website under three literature numbers: SLYT331, SLYT339, and SLYT355, respectively. Copyright © 2010–2015, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Links: REF5020-EP REF5025-EP REF5040-EP REF5050-EP |
Similar Part No. - REF5025MDTEP |
|
Similar Description - REF5025MDTEP |
|
|
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 |