Electronic Components Datasheet Search |
|
REF5020AIDGKT Datasheet(PDF) 10 Page - Texas Instruments |
|
|
REF5020AIDGKT Datasheet(HTML) 10 Page - Texas Instruments |
10 / 20 page DNC TEMP V OUT V IN GND DNC NC TRIM/NR REF50xx C1 1 F m +V SUPPLY TEMPERATURE DRIFT 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 Drift + V OUTMAX * VOUTMIN V OUT Temp Range 106(ppm) (1) POWER DISSIPATION TEMPERATURE MONITORING NOISE PERFORMANCE REF5010 ,, REF5020 REF5025, REF5030 REF5040, REF5045, REF5050 SBOS410C – JUNE 2007 – REVISED DECEMBER 2008.................................................................................................................................................. www.ti.com The TEMP pin has high output impedance (see Figure 21). 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 op amp, such as the OPA333, OPA335, or OPA376, as shown in Figure 25. Figure 24. Noise Reduction Using the TRIM/NR Pin 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 the following equation: Figure 25. Buffering the TEMP Pin Output The REF50xx features a maximum drift coefficient of The REF50xx family is specified to deliver current 3ppm/°C for the high-grade version, and 8ppm/°C for loads of ±10mA over the specified input voltage the standard-grade. range. The temperature of the device increases according to the equation: TJ = TA + PD × θJA Where: TJ = Junction temperature (°C) The temperature output terminal (TEMP, pin 3) provides a temperature-dependent voltage output TA = Ambient temperature (°C) with approximately 60k Ω source impedance. As seen PD = Power dissipated (W) in Figure 8, the output voltage follows the nominal θ JA = Junction-to-ambient thermal resistance relationship: (°C/W) VTEMP PIN = 509mV + 2.64 × T(°C) The REF50xx junction temperature must not exceed the absolute maximum rating of +150°C. 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 Typical 0.1Hz to 10Hz voltage noise for each member temperature compensation of analog circuitry. A of the REF50xx family is specified in the Electrical temperature change of 30°C corresponds to an Characteristics: Per Device table. The noise voltage approximate 79mV change in voltage at the TEMP increases with output voltage and operating pin. temperature. Additional filtering can be used to improve output noise levels, although care should be taken to ensure the output impedance does not degrade performance. 10 Submit Documentation Feedback Copyright © 2007–2008, Texas Instruments Incorporated Product Folder Link(s): REF5010 REF5020 REF5025 REF5030 REF5040 REF5045 REF5050 |
Similar Part No. - REF5020AIDGKT |
|
Similar Description - REF5020AIDGKT |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | 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 |