Moteur de recherche de fiches techniques de composants électroniques |
|
LM12H458CIV Fiches technique(PDF) 10 Page - Texas Instruments |
|
LM12H458CIV Fiches technique(HTML) 10 Page - Texas Instruments |
10 / 43 page LM12454, LM12458, LM12H458 SNAS079A – MAY 2004 – REVISED FEBRUARY 2006 www.ti.com INTERNAL REFERENCE CHARACTERISTICS (1) (2) The following specifications apply to the LM12454, LM12458, and LM12H458 for VA+ = VD+ = 5V unless otherwise specified. Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25°C. Typical Limits Symbol Parameter Conditions Units (3) (4) VREFOUT Internal Reference Output Voltage 2.5 2.5 ±4% V (max) Internal Reference Temperature ΔVREF/ΔT 40 ppm/°C Coefficient Sourcing (0 < IL ≤ +4 mA) 0.2 %/mA (max) ΔREF/ΔIL Internal Reference Load Regulation Sinking ( −1 ≤ IIL < 0 mA) 1.2 %/mA (max) ΔVREF Line Regulation 4.5V ≤ VA+ ≤ 5.5V 3 20 mV (max) ISC Internal Reference Short Circuit Current VREFOUT = 0V 13 25 mA (max) ΔVREF/Δt Long Term Stability 200 ppm/kHr VA+ = VD+ = 0V → tSU Internal Reference Start-Up Time 10 ms 5V, CL = 100 μF (1) Two on-chip diodes are tied to each analog input through a series resistor, as shown below. Input voltage magnitude up to 5V above VA+ or 5V below GND will not damage the LM12454 or the LM12(H)458. However, errors in the A/D conversion can occur if these diodes are forward biased by more than 100 mV. As an example, if VA+ is 4.5 VDC, full-scale input voltage must be ≤4.6 VDC to ensure accurate conversions. See Figure 3 (2) VA+ and VD+ must be connected together to the same power supply voltage and bypassed with separate capacitors at each V + pin to assure conversion/comparison accuracy. (3) Typical figures are at TA = 25°C and represent most likely parametric norm. (4) Limits are to AOQL (Average Output Quality Level). DIGITAL CHARACTERISTICS (1) (2) The following specifications apply to the LM12454, LM12458, and LM12H458 for VA+ = VD+ = 5V, unless otherwise specified. Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25°C. Typical Limits Symbol Parameter Conditions Units (3) (4) VIN(1) Logical “1” Input Voltage VA+ = VD+ = 5.5V 2.0 V (min) VIN(0) Logical “0” Input Voltage VA+ = VD+ = 4.5V 0.8 V (max) IIN(1) Logical “1” Input Current VIN = 5V 0.005 1.0 μA (max) IIN(0) Logical “0” Input Current VIN = 0V −0.005 −1.0 μA (max) CIN D0–D15 Input Capacitance 6 pF VA+ = VD+ = 4.5V VOUT(1) Logical “1” Output Voltage IOUT = −360 μA 2.4 V (min) IOUT = −10 μA 4.25 V (min) VA+ = VD+ = 4.5V VOUT(0) Logical “0” Output Voltage 0.4 V (max) IOUT = 1.6 mA VOUT = 0V −0.01 −3.0 μA (max) IOUT TRI-STATE® Output Leakage Current VOUT = 5V 0.01 3.0 μA (max) (1) Two on-chip diodes are tied to each analog input through a series resistor, as shown below. Input voltage magnitude up to 5V above VA+ or 5V below GND will not damage the LM12454 or the LM12(H)458. However, errors in the A/D conversion can occur if these diodes are forward biased by more than 100 mV. As an example, if VA+ is 4.5 VDC, full-scale input voltage must be ≤4.6 VDC to ensure accurate conversions. See Figure 3 (2) VA+ and VD+ must be connected together to the same power supply voltage and bypassed with separate capacitors at each V + pin to assure conversion/comparison accuracy. (3) Typical figures are at TA = 25°C and represent most likely parametric norm. (4) Limits are to AOQL (Average Output Quality Level). 10 Submit Documentation Feedback Copyright © 2004–2006, Texas Instruments Incorporated Product Folder Links: LM12454 LM12458 LM12H458 |
Numéro de pièce similaire - LM12H458CIV |
|
Description similaire - LM12H458CIV |
|
|
Lien URL |
Politique de confidentialité |
ALLDATASHEET.FR |
ALLDATASHEET vous a-t-il été utile ? [ DONATE ] |
À propos de Alldatasheet | Publicité | Contactez-nous | Politique de confidentialité | Echange de liens | Fabricants 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 |