LM4040

LM4040 Precision Micropower Shunt Voltage Reference April 2005 LM4040 Precision Micropower Shunt Voltage Reference General Description Ideal for space critical applications, the LM4040 precision voltage reference is available in the sub-miniature SC70 and SOT-23 surface-mount package. The LM4040’s advanced design eliminates the need for an external stabilizing capacitor while ensuring stability with any capacitive load, thus making the LM4040 easy to use. Further reducing design effort is the availability of several fixed reverse breakdown voltages: 2.048V, 2.500V, 3.000V, 4.096V, 5.000V, 8.192V, and 10.000V. The minimum operating current increases from 60 µA for the LM4040-2.5 to 100 µA for the LM4040-10.0. All versions have a maximum operating current of 15 mA. The LM4040 utilizes fuse and zener-zap reverse breakdown voltage trim during wafer sort to ensure that the prime parts have an accuracy of better than ± 0.1% (A grade) at 25˚C. Bandgap reference temperature drift curvature correction and low dynamic impedance ensure stable reverse breakdown voltage accuracy over a wide range of operating temperatures and currents. Also available is the LM4041 with two reverse breakdown voltage versions: adjustable and 1.2V. Please see the LM4041 data sheet. n Tolerates capacitive loads n Fixed reverse breakdown voltages of 2.048V, 2.500V,3.000V, 4.096V, 5.000V, 8.192V, and 10.000V Key Specifications (LM4040-2.5) j Output voltage tolerance (A grade, 25˚C) j Low output noise ± 0.1% (max) 35 µVrms(typ) 60 µA to 15 mA −40˚C to +85˚C −40˚C to +125˚C 100 ppm/˚C (max) (10 Hz to 10 kHz) j Wide operating current range j Industrial temperature range j Extended temperature range j Low temperature coefficient Applications n n n n n n n n Portable, Battery-Powered Equipment Data Acquisition Systems Instrumentation Process Control Energy Management Product Testing Automotive Precision Audio Components Features n Small packages: SOT-23, TO-92 and SC70 n No output capacitor required Connection Diagrams SOT-23 TO-92 SC70 01132301 *This pin must be left floating or connected to pin 2. 01132303 01132330 Top View See NS Package Number MF03A (JEDEC Registration TO-236AB) Bottom View See NS Package Number Z03A *This pin must be left floating or connected to pin 1. Top View See NS Package Number MAA05A © 2005 National Semiconductor Corporation DS011323 www.national.com LM4040 Ordering Information Industrial Temperature Range (−40˚C to +85˚C) Reverse Breakdown Voltage Tolerance at 25˚C and Average Reverse Breakdown Voltage Temperature Coefficient Package M3 (SOT-23) Supplied as 1000 Units Tape and Reel Supplied as 3000 Units tape and Reel M7 (SC70) Supplied as 1000 Units Tape and Reel Supplied as 3000 Units Tape and Reel Z (TO-92) NS Package Number ± 0.1%, 100 ppm/˚C max (A grade) LM4040AIM3-2.0 LM4040AIM3-2.5 LM4040AIM3-3.0 LM4040AIM3-4.1 LM4040AIM3-5.0 LM4040AIM3-8.2 LM4040AIM3-10.0 LM4040BIM3-2.0 LM4040BIM3-2.5 LM4040BIM3-3.0 LM4040BIM3-4.1 LM4040BIM3-5.0 LM4040BIM3-8.2 LM4040BIM3-10.0 LM4040CIM3-2.0 LM4040CIM3-2.5 LM4040CIM3-3.0 LM4040CIM3-4.1 LM4040CIM3-5.0 LM4040CIM3-8.2 LM4040CIM3-10.0 LM4040DIM3-2.0 LM4040DIM3-2.5 LM4040DIM3-3.0 LM4040DIM3-4.1 LM4040DIM3-5.0 LM4040DIM3-8.2 LM4040DIM3-10.0 LM4040EIM3-2.0 LM4040EIM3-2.5 LM4040EIM3-3.0 LM4040AIM3X-2.0 LM4040AIM3X-2.5 LM4040AIM3X-3.0 LM4040AIM3X-4.1 LM4040AIM3X-5.0 LM4040AIM3X-8.2 LM4040AIM3X-10.0 LM4040BIM3X-2.0 LM4040BIM3X-2.5 LM4040BIM3X-3.0 LM4040BIM3X-4.1 LM4040BIM3X-5.0 LM4040BIM3X-8.2 LM4040BIM3X-10.0 LM4040CIM3X-2.0 LM4040CIM3X-2.5 LM4040CIM3X-3.0 LM4040CIM3X-4.1 LM4040CIM3X-5.0 LM4040CIM3X-8.2 LM4040CIM3X-10.0 LM4040DIM3X-2.0 LM4040DIM3X-2.5 LM4040DIM3X-3.0 LM4040DIM3X-4.1 LM4040DIM3X-5.0 LM4040DIM3X-8.2 LM4040DIM3X-10.0 LM4040BIM7-2.0 LM4040BIM7-2.5 LM4040BIM7-3.0 LM4040BIM7-4.1 LM4040BIM7-5.0 LM4040BIM7X-2.0 LM4040BIM7X-2.5 LM4040BIM7X-3.0 LM4040BIM7X-4.1 LM4040BIM7X-5.0 LM4040AIZ-2.0 LM4040AIZ-2.5 LM4040AIZ-3.0 LM4040AIZ-4.1 LM4040AIZ-5.0 LM4040AIZ-8.2 LM4040AIZ-10.0 MF03A, Z03A ± 0.2%, 100 ppm/˚C max (B grade) LM4040BIZ-2.0 MF03A, LM4040BIZ-2.5 Z03A, LM4040BIZ-3.0 MAA05A LM4040BIZ-4.1 LM4040BIZ-5.0 LM4040BIZ-8.2 LM4040BIZ-10.0 LM4040CIZ-2.0 MF03A, LM4040CIZ-2.5 Z03A, LM4040CIZ-3.0 MAA05A LM4040CIZ-4.1 LM4040CIZ-5.0 LM4040CIZ-8.2 LM4040CIZ-10.0 LM4040DIZ-2.0 MF03A, LM4040DIZ-2.5 Z03A, LM4040DIZ-3.0 MAA05A LM4040DIZ-4.1 LM4040DIZ-5.0 LM4040DIZ-8.2 LM4040DIZ-10.0 MF03A, Z03A, MAA05A ± 0.5%, 100 ppm/˚C max (C grade) LM4040CIM7-2.0 LM4040CIM7-2.5 LM4040CIM7-3.0 LM4040CIM7-4.1 LM4040CIM7-5.0 LM4040CIM7X-2.0 LM4040CIM7X-2.5 LM4040CIM7X-3.0 LM4040CIM7X-4.1 LM4040CIM7X-5.0 ± 1.0%, 150 ppm/˚C max (D grade) LM4040DIM7-2.0 LM4040DIM7-2.5 LM4040DIM7-3.0 LM4040DIM7-4.1 LM4040DIM7-5.0 LM4040DIM7X-2.0 LM4040DIM7X-2.5 LM4040DIM7X-3.0 LM4040DIM7X-4.1 LM4040DIM7X-5.0 ± 2.0%, 150 ppm/˚C max (E grade) LM4040EIM3X-2.0 LM4040EIM7-2.0 LM4040EIM3X-2.5 LM4040EIM7-2.5 LM4040EIM3X-3.0 LM4040EIM7-3.0 LM4040EIM7X-2.0 LM4040EIZ-2.0 LM4040EIM7X-2.5 LM4040EIZ-2.5 LM4040EIM7X-3.0 LM4040EIZ-3.0 www.national.com 2 LM4040 Extended Temperature Range (−40 ˚C to +125˚C) Reverse Breakdown Voltage Tolerance at 25 ˚C and Average Reverse Breakdown Voltage Temperature Coefficient Package M3 (SOT-23) See NS Package Number MF03A LM4040CEM3-2.0, LM4040CEM3-2.5, LM4040CEM3-3.0, LM4040CEM3-5.0 LM4040DEM3-2.0, LM4040DEM3-2.5, LM4040DEM3-3.0, LM4040DEM3-5.0 LM4040EEM3-2.0, LM4040EEM3-2.5, LM4040EEM3-3.0 ± 0.5%, 100 ppm/˚C max (C grade) ± 1.0%, 150 ppm/˚C max (D grade) ± 2.0%, 150 ppm/˚C max (E grade) 3 www.national.com LM4040 SOT-23 AND SC70 Package Marking Information Only three fields of marking are possible on the SOT-23’s and SC70’s small surface. This table gives the meaning of the three fields. Part Marking RJA SOT-23 only R2A SOT-23 only RKA SOT-23 only R4A SOT-23 only R5A SOT-23 only R = Reference Second Field: J = 2.048V Voltage Option 2 = 2.500V Voltage Option R8A SOT-23 only R0A SOT-23 only RJB R2B RKB R4B R5B R8B SOT-23 only R0B SOT-23 only RJC R2C RKC R4C R5C R8C SOT-23 only R0C SOT-23 only RJD R2D RKD R4D R5D R8D SOT-23 only R0D SOT-23 only RJE R2E RKE A = ± 0.1%, B = ± 0.2%, C = +0.5%, D = ± 1.0%, E = ± 2.0% A–E = Initial Reverse Breakdown Voltage or Reference Voltage Tolerance Third Field: 8= 8.192V Voltage Option 0 = 10.000V Voltage Option 5 = 5.000V Voltage Option K = 3.000V Voltage Option 4 = 4.096V Voltage Option First Field: Field Definition www.national.com 4 LM4040 Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Reverse Current Forward Current Power Dissipation (TA = 25˚C) (Note 2) M3 Package Z Package M7 Package Storage Temperature Lead Temperature M3 Package Vapor phase (60 seconds) Infrared (15 seconds) Z Package Soldering (10 seconds) ESD Susceptibility Human Body Model (Note 3) 2 kV +260˚C +215˚C +220˚C 306 mW 550 mW 241 mW −65˚C to +150˚C 20 mA 10 mA Machine Model (Note 3) 200V See AN-450 “Surface Mounting Methods and Their Effect on Product Reliability” for other methods of soldering surface mount devices. Operating Ratings(Notes 1, 2) Temperature Range Industrial Temperature Range Extended Temperature Range Reverse Current LM4040-2.0 LM4040-2.5 LM4040-3.0 LM4040-4.1 LM4040-5.0 LM4040-8.2 LM4040-10.0 60 µA to 15 mA 60 µA to 15 mA 62 µA to 15 mA 68 µA to 15 mA 74 µA to 15 mA 91 µA to 15 mA 100 µA to 15 mA (Tmin ≤ TA ≤ Tmax) −40˚C ≤ TA ≤ +85˚C −40˚C ≤ TA ≤ +125˚C LM4040-2.0 Electrical Characteristics (Industrial Temperature Range) Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25˚C. The grades A and B designate initial Reverse Breakdown Voltage tolerances of ± 0.1% and ± 0.2%, respectively. LM4040AIM3 LM4040AIZ (Limit) (Note 5) LM4040BIM3 LM4040BIZ LM4040BIM7 (Limit) (Note 5) Symbol Parameter Conditions Typical (Note 4) Units (Limit) VR Reverse Breakdown Voltage IR = 100 µA Reverse Breakdown Voltage IR = 100 µA Tolerance (Note 6) 2.048 V ± 2.0 ± 15 45 60 65 ± 4.1 ± 17 mV (max) mV (max) µA IRMIN Minimum Operating Current 60 65 µA (max) µA (max) ppm/˚C ∆VR/∆T Average Reverse Breakdown IR = 10 mA Voltage Temperature IR = 1 mA Coefficient IR = 100 µA (Note 6) ± 20 ± 15 ± 15 0.3 0.8 1.0 2.5 6.0 8.0 6.0 8.0 0.8 0.8 1.0 ± 100 ± 100 ppm/˚C (max) ppm/˚C mV mV (max) mV (max) mV mV (max) mV (max) Ω Ω (max) µVrms ∆VR/∆IR Reverse Breakdown Voltage IRMIN ≤ IR ≤ 1 mA Change with Operating Current Change (Note *NO TARGET FOR *) 1 mA ≤ IR ≤ 15 mA ZR eN Reverse Dynamic Impedance Wideband Noise IR = 1 mA, f = 120 Hz, IAC = 0.1 IR IR = 100 µA 10 Hz ≤ f ≤ 10 kHz 0.3 0.8 35 5 www.national.com LM4040 LM4040-2.0 Electrical Characteristics (Industrial Temperature Range) (Continued) Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25˚C. The grades A and B designate initial Reverse Breakdown Voltage tolerances of ± 0.1% and ± 0.2%, respectively. LM4040AIM3 LM4040AIZ (Limit) (Note 5) LM4040BIM3 LM4040BIZ LM4040BIM7 (Limit) (Note 5) Symbol Parameter Conditions Typical (Note 4) Units (Limit) ∆V R Reverse Breakdown Voltage t = 1000 hrs Long Term Stability T = 25˚C ± 0.1˚C IR = 100 µA Thermal Hysteresis (Note 8) ∆T = −40˚C to +125˚C 120 ppm VHYST 0.08 % LM4040-2.0 Electrical Characteristics (Industrial Temperature Range) Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25˚C. The grades C, D and E designate initial Reverse Breakdown Voltage tolerances of ± 0.5%, ± 1.0% and ± 2.0%, respectively. Symbol Parameter Conditions Typical (Note 4) LM4040CIM3 LM4040DIM3 LM4040EIM7 LM4040CIZ LM4040DIZ LM4040EIZ LM4040CIM7 LM4040DIM7 (Limit) (Limit) (Limit) (Note 5) (Note 5) (Note 5) Units (Limit) VR Reverse Breakdown IR = 100 µA Voltage Reverse Breakdown IR = 100 µA Voltage Tolerance (Note 6) 2.048 V ± 10 ± 23 45 60 65 ± 20 ± 40 ± 41 ± 60 mV (max) mV (max) µA IRMIN Minimum Operating Current Average Reverse Breakdown Voltage Temperature Coefficient (Note 6) IR = 10 mA IR = 1 mA IR = 100 µA 65 70 65 70 µA (max) µA (max) ppm/˚C ∆VR/∆T ± 20 ± 15 ± 15 0.3 0.8 1.0 2.5 6.0 8.0 0.3 0.9 35 1.1 1.1 8.0 10.0 8.0 10.0 1.0 1.2 1.0 1.2 ± 100 ± 150 ± 150 ppm/˚C (max) ppm/˚C mV mV (max) mV (max) mV mV (max) mV (max) Ω Ω(max) µVrms ∆VR/∆IR Reverse Breakdown IRMIN ≤ IR ≤ 1 mA Voltage Change with Operating Current Change 1 mA ≤ IR ≤ 15 mA (Note *NO TARGET FOR *) Reverse Dynamic Impedance Wideband Noise IR = 1 mA, f = 120 Hz IAC = 0.1 IR IR = 100 µA 10 Hz ≤ f ≤ 10 kHz ZR eN ∆VR Reverse Breakdown t = 1000 hrs Voltage Long Term T = 25˚C ± 0.1˚C Stability IR = 100 µA Thermal Hysteresis (Note 8) ∆T = −40˚C to +125˚C 120 ppm VHYST 0.08 % www.national.com 6 LM4040 LM4040-2.0 Electrical Characteristics (Extended Temperature Range) Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25˚C. The grades C, D and E designate initial Reverse Breakdown Voltage tolerances of ± 0.5%, ± 1.0% and ± 2.0%, respectively. Symbol Parameter Conditions Typical (Note 4) 2.048 LM4040CEM3 LM4040DEM3 LM4040EEM3 (Limit) (Limit) (Limit) (Note 5) (Note 5) (Note 5) Units (Limit) V VR Reverse Breakdown IR = 100 µA Voltage Reverse Breakdown IR = 100 µA Voltage Tolerance (Note 6) ± 10 ± 30 45 60 68 ± 20 ± 50 ± 41 ± 70 mV (max) mV (max) µA IRMIN Minimum Operating Current Average Reverse Breakdown Voltage Temperature Coefficient (Note 6) IR = 10 mA IR = 1 mA IR = 100 µA 65 73 65 73 µA (max) µA (max) ppm/˚C ∆VR/∆T ± 20 ± 15 ± 15 0.3 0.8 1.0 2.5 6.0 8.0 8.0 10.0 1.1 8.0 10.0 1.1 1.0 1.2 1.0 1.2 ± 100 ± 150 ± 150 ppm/˚C (max) ppm/˚C mV mV (max) mV (max) mV mV (max) mV (max) Ω Ω (max) µVrms ∆VR/∆IR Reverse Breakdown IRMIN ≤ IR ≤ 1 mA Voltage Change with Operating Current Change (Note 7) 1 mA ≤ IR ≤ 15 mA ZR eN ∆V R Reverse Dynamic Impedance Wideband Noise IR = 1 mA, f = 120 Hz, IAC = 0.1 IR IR = 100 µA 10 Hz ≤ f ≤ 10 kHz 0.3 0.9 35 Reverse Breakdown t = 1000 hrs Voltage Long Term T = 25˚C ± 0.1˚C IR = 100 µA Stability Thermal Hysteresis (Note 8) ∆T = −40˚C to +125˚C 120 ppm VHYST 0.08 % LM4040-2.5 Electrical Characteristics (Industrial Temperature Range) Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25˚C. The grades A and B designate initial Reverse Breakdown Voltage tolerances of ± 0.1% and ± 0.2%, respectively. LM4040AIM3 LM4040AIZ (Limit) (Note 5) LM4040BIM3 LM4040BIZ LM4040BIM7 Limits (Note 5) Symbol Parameter Conditions Typical (Note 4) Units (Limit) VR Reverse Breakdown Voltage IR = 100 µA Reverse Breakdown Voltage IR = 100 µA Tolerance (Note 6) 2.500 V ± 2.5 ± 19 45 60 65 ± 5.0 ± 21 60 65 mV (max) mV (max) µA µA (max) µA (max) IRMIN Minimum Operating Current 7 www.national.com LM4040 LM4040-2.5 Electrical Characteristics (Industrial Temperature Range) (Continued) Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25˚C. The grades A and B designate initial Reverse Breakdown Voltage tolerances of ± 0.1% and ± 0.2%, respectively. LM4040AIM3 LM4040AIZ (Limit) (Note 5) LM4040BIM3 LM4040BIZ LM4040BIM7 Limits (Note 5) Symbol Parameter Conditions Typical (Note 4) Units (Limit) ∆VR/∆T Average Reverse Breakdown IR = 10 mA Voltage Temperature IR = 1 mA Coefficient (Note 6) IR = 100 µA ± 20 ± 15 ± 15 0.3 ppm/˚C ± 100 ± 100 ppm/˚C (max) ppm/˚C mV ∆VR/∆IR Reverse Breakdown Voltage IRMIN ≤ IR ≤ 1 mA Change with Operating Current Change (Note 7) 1 mA ≤ IR ≤ 15 mA 0.8 1.0 2.5 6.0 8.0 0.8 1.0 6.0 8.0 0.8 mV (max) mV (max) mV mV (max) mV (max) Ω Ω (max) µVrms ZR eN ∆VR Reverse Dynamic Impedance Wideband Noise IR = 1 mA, f = 120 Hz, IAC = 0.1 IR IR = 100 µA 10 Hz ≤ f ≤ 10 kHz 0.3 0.8 35 Reverse Breakdown Voltage t = 1000 hrs Long Term Stability T = 25˚C ± 0.1˚C IR = 100 µA Thermal Hysteresis (Note 8) ∆T = −40˚C to +125˚C 120 ppm VHYST 0.08 % LM4040-2.5 Electrical Characteristics (Industrial Temperature Range) Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25˚C. The grades C, D and E designate initial Reverse Breakdown Voltage tolerances of ± 0.5%, ± 1.0% and ± 2.0%, respectively. Symbol Parameter Conditions Typical (Note 4) LM4040CIM3 LM4040DIM3 LM4040EIM7 LM4040DIZ LM4040DIZ LM4040EIZ LM4040CIM7 LM4040DIM7 Limits Limits Limits (Note 5) (Note 5) (Note 5) Units (Limit) VR Reverse Breakdown IR = 100 µA Voltage Reverse Breakdown IR = 100 µA Voltage Tolerance (Note 6) 2.500 V ± 12 ± 29 45 60 65 ± 25 ± 49 ± 50 ± 74 mV (max) mV (max) µA IRMIN Minimum Operating Current Average Reverse Breakdown Voltage Temperature Coefficient(Note 6) IR = 10 mA IR = 1 mA IR = 100 µA 65 70 65 70 µA (max) µA (max) ppm/˚C ∆VR/∆T ± 20 ± 15 ± 15 ± 100 ± 150 ± 150 ppm/˚C (max) ppm/˚C www.national.com 8 LM4040 LM4040-2.5 Electrical Characteristics (Industrial Temperature Range) Symbol Parameter Conditions Typical (Note 4) (Continued) Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25˚C. The grades C, D and E designate initial Reverse Breakdown Voltage tolerances of ± 0.5%, ± 1.0% and ± 2.0%, respectively. LM4040CIM3 LM4040DIM3 LM4040EIM7 LM4040DIZ LM4040DIZ LM4040EIZ LM4040CIM7 LM4040DIM7 Limits Limits Limits (Note 5) (Note 5) (Note 5) 0.8 1.0 2.5 6.0 8.0 0.3 0.9 35 1.1 1.1 8.0 10.0 8.0 10.0 1.0 1.2 1.0 1.2 Units (Limit) ∆VR/∆IR Reverse Breakdown IRMIN ≤ IR ≤ 1 mA Voltage Change with Operating Current Change 1 mA ≤ IR ≤ 15 mA (Note 7) 0.3 mV mV (max) mV (max) mV mV (max) mV (max) Ω Ω(max) µVrms ZR eN ∆VR Reverse Dynamic Impedance Wideband Noise IR = 1 mA, f = 120 Hz IAC = 0.1 IR IR = 100 µA 10 Hz ≤ f ≤ 10 kHz Reverse Breakdown t = 1000 hrs Voltage Long Term T = 25˚C ± 0.1˚C Stability IR = 100 µA Thermal Hysteresis (Note 8) ∆T = −40˚C to +125˚C 120 ppm VHYST 0.08 % LM4040-2.5 Electrical Characteristics (Extended Temperature Range) Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25˚C. The grades C, D and E designate initial Reverse Breakdown Voltage tolerances of ± 0.5%, ± 1.0% and ± 2.0%, respectively. Symbol Parameter Conditions Typical (Note 4) 2.500 LM4040CEM3 LM4040DEM3 LM4040EEM3 Limits Limits Limits (Note 5) (Note 5) (Note 5) Units (Limit) V VR Reverse Breakdown IR = 100 µA Voltage Reverse Breakdown IR = 100 µA Voltage Tolerance(Note 6) ± 12 ± 38 45 60 68 ± 25 ± 63 ± 50 ± 88 mV (max) mV (max) µA IRMIN Minimum Operating Current Average Reverse Breakdown Voltage Temperature Coefficient (Note 6) IR = 10 mA IR = 1 mA IR = 100 µA 65 73 65 73 µA (max) µA (max) ppm/˚C ∆VR/∆T ± 20 ± 15 ± 15 0.3 0.8 1.0 2.5 6.0 8.0 8.0 10.0 8.0 10.0 1.0 1.2 1.0 1.2 ± 100 ± 150 ± 150 ppm/˚C (max) ppm/˚C mV mV (max) mV (max) mV mV (max) mV (max) ∆VR/∆IR Reverse Breakdown IRMIN ≤ IR ≤ 1 mA Voltage Change with Operating Current Change (Note 7) 1 mA ≤ IR ≤ 15 mA 9 www.national.com LM4040 LM4040-2.5 Electrical Characteristics (Extended Temperature Range) Symbol Parameter Conditions Typical (Note 4) 0.3 0.9 35 1.1 (Continued) Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25˚C. The grades C, D and E designate initial Reverse Breakdown Voltage tolerances of ± 0.5%, ± 1.0% and ± 2.0%, respectively. LM4040CEM3 LM4040DEM3 LM4040EEM3 Limits Limits Limits (Note 5) (Note 5) (Note 5) 1.1 Units (Limit) Ω Ω (max) µVrms ZR eN ∆VR Reverse Dynamic Impedance Wideband Noise IR = 1 mA, f = 120 Hz, IAC = 0.1 IR IR = 100 µA 10 Hz ≤ f ≤ 10 kHz Reverse Breakdown t = 1000 hrs Voltage Long Term T = 25˚C ± 0.1˚C IR = 100 µA Stability Thermal Hysteresis (Note 8) ∆T = −40˚C to +125˚C 120 ppm VHYST 0.08 % LM4040-3.0 Electrical Characteristics (Industrial Temperature Range) Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25˚C. The grades A and B designate initial Reverse Breakdown Voltage tolerances of ± 0.1% and ± 0.2%, respectively. LM4040AIM3 LM4040AIZ (Limit) (Note 5) LM4040BIM3 LM4040BIZ LM4040BIM7 Limits (Note 5) Symbol Parameter Conditions Typical (Note 4) Units (Limit) VR Reverse Breakdown Voltage IR = 100 µA Reverse Breakdown Voltage IR = 100 µA Tolerance (Note 6) 3.000 V ± 3.0 ± 22 47 62 67 ± 6.0 ± 26 62 67 mV (max) mV (max) µA µA (max) µA (max) ppm/˚C ppm/˚C (max) ppm/˚C mV IRMIN Minimum Operating Current ∆VR/∆T Average Reverse Breakdown IR = 10 mA Voltage Temperature IR = 1 mA Coefficient (Note 6) IR = 100 µA ± 20 ± 15 ± 15 0.6 ± 100 ± 100 ∆VR/∆IR Reverse Breakdown Voltage IRMIN ≤ IR ≤ 1 mA Change with Operating Current Change (Note 7) 1 mA ≤ IR ≤ 15 mA 0.8 1.1 2.7 6.0 9.0 0.8 1.1 6.0 9.0 0.9 mV (max) mV (max) mV mV (max) mV (max) Ω Ω (max) µVrms ZR eN ∆VR Reverse Dynamic Impedance Wideband Noise IR = 1 mA, f = 120 Hz, IAC = 0.1 IR IR = 100 µA 10 Hz ≤ f ≤ 10 kHz 0.4 0.9 35 Reverse Breakdown Voltage t = 1000 hrs Long Term Stability T = 25˚C ± 0.1˚C IR = 100 µA Thermal Hysteresis (Note 8) ∆T = −40˚C to +125˚C 120 ppm VHYST 0.08 % www.national.com 10 LM4040 LM4040-3.0 Electrical Characteristics (Industrial Temperature Range) Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25˚C. The grades C, D and E designate initial Reverse Breakdown Voltage tolerances of ± 0.5%, ± 1.0% and ± 2.0%, respectively. Symbol Parameter Conditions Typical (Note 4) LM4040CIM3 LM4040DIM3 LM4040EIM7 LM4040DIZ LM4040DIZ LM4040EIZ LM4040CIM7 LM4040DIM7 Limits Limits Limits (Note 5) (Note 5) (Note 5) Units (Limit) VR Reverse Breakdown IR = 100 µA Voltage Reverse Breakdown IR = 100 µA Voltage Tolerance (Note 6) 3.000 V ± 15 ± 34 45 60 65 ± 30 ± 59 ± 60 ± 89 mV (max) mV (max) µA IRMIN Minimum Operating Current Average Reverse Breakdown Voltage Temperature Coefficient(Note 6) IR = 10 mA IR = 1 mA IR = 100 µA 65 70 65 70 µA (max) µA (max) ppm/˚C ∆VR/∆T ± 20 ± 15 ± 15 0.4 0.8 1.1 2.7 6.0 9.0 0.4 0.9 35 1.2 1.2 8.0 11.0 8.0 11.0 1.1 1.3 1.1 1.3 ± 100 ± 150 ± 150 ppm/˚C (max) ppm/˚C mV mV (max) mV (max) mV mV (max) mV (max) Ω Ω(max) µVrms ∆VR/∆IR Reverse Breakdown IRMIN ≤ IR ≤ 1 mA Voltage Change with Operating Current Change 1 mA ≤ IR ≤ 15 mA (Note 7) ZR eN ∆VR Reverse Dynamic Impedance Wideband Noise IR = 1 mA, f = 120 Hz IAC = 0.1 IR IR = 100 µA 10 Hz ≤ f ≤ 10 kHz Reverse Breakdown t = 1000 hrs Voltage Long Term T = 25˚C ± 0.1˚C Stability IR = 100 µA Thermal Hysteresis (Note 8) ∆T = −40˚C to +125˚C 120 ppm VHYST 0.08 % LM4040-3.0 Electrical Characteristics (Extended Temperature Range) Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25˚C. The grades C, D and E designate initial Reverse Breakdown Voltage tolerances of ± 0.5%, ± 1.0% and ± 2.0%, respectively. Symbol Parameter Conditions Typical (Note 4) 3.000 LM4040CEM3 LM4040DEM3 LM4040EEM3 Limits Limits Limits (Note 5) (Note 5) (Note 5) Units (Limit) V VR Reverse Breakdown IR = 100 µA Voltage Reverse Breakdown IR = 100 µA Voltage Tolerance(Note 6) ± 15 ± 45 47 62 70 ± 30 ± 75 ± 60 ± 105 mV (max) mV (max) µA IRMIN Minimum Operating Current 67 75 67 75 µA (max) µA (max) 11 www.national.com LM4040 LM4040-3.0 Electrical Characteristics (Extended Temperature Range) Symbol Parameter Conditions Typical (Note 4) (Continued) Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25˚C. The grades C, D and E designate initial Reverse Breakdown Voltage tolerances of ± 0.5%, ± 1.0% and ± 2.0%, respectively. LM4040CEM3 LM4040DEM3 LM4040EEM3 Limits Limits Limits (Note 5) (Note 5) (Note 5) Units (Limit) ppm/˚C ∆VR/∆T Average Reverse Breakdown Voltage Temperature Coefficient (Note 6) IR = 10 mA IR = 1 mA IR = 100 µA ± 20 ± 15 ± 15 0.4 0.8 1.1 2.7 6.0 9.0 8.0 11.0 1.2 8.0 11.0 1.2 1.1 1.3 1.1 1.3 ± 100 ± 150 ± 150 ppm/˚C (max) ppm/˚C mV mV (max) mV (max) mV mV (max) mV (max) Ω Ω (max) µVrms ∆VR/∆IR Reverse Breakdown IRMIN ≤ IR ≤ 1 mA Voltage Change with Operating Current Change (Note 7) 1 mA ≤ IR ≤ 15 mA ZR eN ∆VR Reverse Dynamic Impedance Wideband Noise IR = 1 mA, f = 120 Hz, IAC = 0.1 IR IR = 100 µA 10 Hz ≤ f ≤ 10 kHz 0.4 0.9 35 Reverse Breakdown t = 1000 hrs Voltage Long Term T = 25˚C ± 0.1˚C IR = 100 µA Stability Thermal Hysteresis (Note 8) ∆T = −40˚C to +125˚C 120 ppm VHYST 0.08 % LM4040-4.1 Electrical Characteristics (Industrial Temperature Range) Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25˚C. The grades A and B designate initial Reverse Breakdown Voltage tolerances of ± 0.1% and ± 0.2%, respectively. Symbol Parameter Conditions Typical (Note 4) LM4040AIM3 LM4040AIZ Limits (Note 5) LM4040BIM3 LM4040BIZ LM4040BIM7 Limits (Note 5) Units (Limit) VR Reverse Breakdown Voltage IR = 100 µA Reverse Breakdown Voltage IR = 100 µA Tolerance (Note 6) 4.096 V ± 4.1 ± 31 50 68 73 ± 8.2 ± 35 68 73 mV (max) mV (max) µA µA (max) µA (max) ppm/˚C ppm/˚C (max) ppm/˚C mV IRMIN Minimum Operating Current ∆VR/∆T Average Reverse Breakdown IR = 10 mA Voltage Temperature IR = 1 mA Coefficient(Note 6) IR = 100 µA ± 30 ± 20 ± 20 0.5 ± 100 ± 100 ∆VR/∆IR Reverse Breakdown Voltage IRMIN ≤ IR ≤ 1 mA Change with Operating Current Change (Note 7) 1 mA ≤ IR ≤ 15 mA 0.9 1.2 3.0 7.0 10.0 0.9 1.2 7.0 10.0 mV (max) mV (max) mV mV (max) mV (max) www.national.com 12 LM4040 LM4040-4.1 Electrical Characteristics (Industrial Temperature Range) Symbol Parameter Conditions Typical (Note 4) LM4040AIM3 LM4040AIZ Limits (Note 5) (Continued) Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25˚C. The grades A and B designate initial Reverse Breakdown Voltage tolerances of ± 0.1% and ± 0.2%, respectively. LM4040BIM3 LM4040BIZ LM4040BIM7 Limits (Note 5) 1.0 Units (Limit) ZR eN ∆V R Reverse Dynamic Impedance Wideband Noise IR = 1 mA, f = 120 Hz, IAC = 0.1 IR IR = 100 µA 10 Hz ≤ f ≤ 10 kHz 0.5 1.0 80 120 Ω Ω (max) µVrms ppm Reverse Breakdown Voltage t = 1000 hrs Long Term Stability T = 25˚C ± 0.1˚C IR = 100 µA Thermal Hysteresis (Note 8) ∆T = −40˚C to +125˚C VHYST 0.08 % 13 www.national.com LM4040 LM4040-4.1 Electrical Characteristics (Industrial Temperature Range) Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25˚C. The grades C and D designate initial Reverse Breakdown Voltage tolerances of ± 0.5% and ± 1.0%, respectively. Symbol Parameter Conditions Typical (Note 4) LM4040CIM3 LM4040CIZ LM4040CIM7 Limits (Note 5) LM4040DIM3 LM4040BIZ LM4040DIM7 Limits (Note 5) Units (Limit) VR Reverse Breakdown Voltage IR = 100 µA Reverse Breakdown Voltage IR = 100 µA Tolerance (Note 6) 4.096 V ± 20 ± 47 50 68 73 ± 41 ± 81 73 78 mV (max) mV (max) µA µA (max) µA (max) ppm/˚C ppm/˚C (max) ppm/˚C mV IRMIN Minimum Operating Current ∆VR/∆T Average Reverse Breakdown IR = 10 mA Voltage Temperature IR = 1 mA Coefficient (Note 6) IR = 100 µA ∆VR/∆IR Reverse Breakdown Voltage IRMIN ≤ IR ≤ 1 mA Change with Operating Current Change (Note 7) 1 mA ≤ IR ≤ 15 mA ± 30 ± 20 ± 20 0.5 ± 100 ± 150 0.9 1.2 3.0 7.0 10.0 1.2 1.5 9.0 13.0 1.3 mV (max) mV (max) mV mV (max) mV (max) Ω Ω (max) µVrms ppm ZR eN ∆VR Reverse Dynamic Impedance Wideband Noise IR = 1 mA, f = 120 Hz, IAC = 0.1 IR IR = 100 µA 10 Hz ≤ f ≤ 10 kHz 0.5 1.0 80 120 Reverse Breakdown Voltage t = 1000 hrs Long Term Stability T = 25˚C ± 0.1˚C IR = 100 µA Thermal Hysteresis (Note 8) ∆T = −40˚C to +125˚C VHYST 0.08 % www.national.com 14 LM4040 LM4040-5.0 Electrical Characteristics (Industrial Temperature Range) Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25˚C. The grades A and B designate initial Reverse Breakdown Voltage tolerances of ± 0.1% and ± 0.2%, respectively. Symbol Parameter Conditions Typical (Note 4) LM4040AIM3 LM4040AIZ Limits (Note 5) LM4040BIM3 LM4040BIZ LM4040BIM7 Limits (Note 5) Units (Limit) VR Reverse Breakdown Voltage IR = 100 µA Reverse Breakdown Voltage IR = 100 µA Tolerance (Note 6) 5.000 V ± 5.0 ± 38 54 74 80 ± 10 ± 43 74 80 mV (max) mV (max) µA µA (max) µA (max) ppm/˚C ppm/˚C (max) ppm/˚C mV IRMIN Minimum Operating Current ∆VR/∆T Average Reverse Breakdown IR = 10 mA Voltage Temperature IR = 1 mA Coefficient (Note 6) IR = 100 µA ∆VR/∆IR Reverse Breakdown Voltage IRMIN ≤ IR ≤ 1 mA Change with Operating Current Change (Note 7) 1 mA ≤ IR ≤ 15 mA ± 30 ± 20 ± 20 0.5 ± 100 ± 100 1.0 1.4 3.5 8.0 12.0 1.0 1.4 8.0 12.0 1.1 mV (max) mV (max) mV mV (max) mV (max) Ω Ω (max) µVrms ZR eN ∆VR Reverse Dynamic Impedance Wideband Noise IR = 1 mA, f = 120 Hz, IAC = 0.1 IR IR = 100 µA 10 Hz ≤ f ≤ 10 kHz 0.5 1.1 80 Reverse Breakdown Voltage t = 1000 hrs Long Term Stability T = 25˚C ± 0.1˚C IR = 100 µA Thermal Hysteresis (Note 8) ∆T = −40˚C to +125˚C 120 ppm VHYST 0.08 % 15 www.national.com LM4040 LM4040-5.0 Electrical Characteristics (Industrial Temperature Range) Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25˚C. The grades C and D designate initial Reverse Breakdown Voltage tolerances of ± 0.5% and ± 1.0%, respectively. Symbol Parameter Conditions Typical (Note 4) LM4040CIM3 LM4040CIZ LM4040CIM7 Limits (Note 5) LM4040DIM3 LM4040BIZ LM4040DIM7 Limits (Note 5) Units (Limit) VR Reverse Breakdown Voltage IR = 100 µA Reverse Breakdown Voltage IR = 100 µA Tolerance (Note 6) 5.000 V ± 25 ± 58 54 74 80 ± 50 ± 99 79 85 mV (max) mV (max) µA µA (max) µA (max) ppm/˚C ppm/˚C (max) ppm/˚C mV IRMIN Minimum Operating Current ∆VR/∆T Average Reverse Breakdown IR = 10 mA Voltage Temperature IR = 1 mA Coefficient (Note 6) IR = 100 µA ∆VR/∆IR Reverse Breakdown Voltage IRMIN ≤ IR ≤ 1 mA Change with Operating Current Change (Note 7) 1 mA ≤ IR ≤ 15 mA ± 30 ± 20 ± 20 0.5 ± 100 ± 150 1.0 1.4 3.5 8.0 12.0 1.3 1.8 10.0 15.0 1.5 mV (max) mV (max) mV mV (max) mV (max) Ω Ω (max) µVrms ZR eN ∆VR Reverse Dynamic Impedance Wideband Noise IR = 1 mA, f = 120 Hz, IAC = 0.1 IR IR = 100 µA 10 Hz ≤ f ≤ 10 kHz 0.5 1.1 80 Reverse Breakdown Voltage t = 1000 hrs Long Term Stability T = 25˚C ± 0.1˚C IR = 100 µA Thermal Hysteresis (Note 8) ∆T = −40˚C to +125˚C 120 ppm VHYST 0.08 % www.national.com 16 LM4040 LM4040-5.0 Electrical Characteristics (Extended Temperature Range) Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25˚C. The grades C and D designate initial Reverse Breakdown Voltage tolerances of ± 0.5% and ± 1.0%, respectively. Symbol Parameter Conditions Typical (Note 4) VR Reverse Breakdown Voltage IR = 100 µA Reverse Breakdown Voltage IR = 100 µA Tolerance(Note 6) IRMIN Minimum Operating Current 54 74 83 ∆VR/∆T Average Reverse Breakdown Voltage Temperature Coefficient (Note 6) IR = 10 mA IR = 1 mA IR = 100 µA 79 88 5.000 LM4040CEM3 LM4040DEM3 Limits (Note 5) Limits (Note 5) V Units (Limit) ± 25 ± 75 ± 50 ± 125 mV (max) mV (max) µA µA (max) µA (max) ppm/˚C ± 30 ± 20 ± 20 0.5 1.0 1.4 3.5 8.0 12.0 8.0 15.0 1.1 1.0 1.8 ± 100 ± 150 ppm/˚C (max) ppm/˚C mV mV (max) mV (max) mV mV (max) mV (max) Ω Ω (max) µVrms ∆VR/∆IR Reverse Breakdown Voltage IRMIN ≤ IR ≤ 1 mA Change with Operating Current Change (Note 7) 1 mA ≤ IR ≤ 15 mA ZR eN ∆V R Reverse Dynamic Impedance Wideband Noise IR = 1 mA, f = 120 Hz, IAC = 0.1 IR IR = 100 µA 10 Hz ≤ f ≤ 10 kHz 0.5 1.1 80 Reverse Breakdown Voltage t = 1000 hrs Long Term Stability T = 25˚C ± 0.1˚C IR = 100 µA Thermal Hysteresis (Note 8) ∆T = −40˚C to +125˚C 120 ppm VHYST 0.08 % 17 www.national.com LM4040 LM4040-8.2 Electrical Characteristics (Industrial Temperature Range) Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25˚C. The grades A and B designate initial Reverse Breakdown Voltage tolerances of ± 0.1% and ± 0.2%, respectively. LM4040AIM3 LM4040AIZ Limits (Note 5) VR Reverse Breakdown Voltage IR = 150 µA Reverse Breakdown Voltage IR = 150 µA Tolerance (Note 6) IRMIN Minimum Operating Current 67 91 95 ∆VR/∆T Average Reverse Breakdown IR = 10 mA Voltage Temperature IR = 1 mA Coefficient(Note 6) IR = 150 µA 91 95 8.192 LM4040BIM3 LM4040BIZ Limits (Note 5) V Symbol Parameter Conditions Typical (Note 4) Units (Limit) ± 8.2 ± 61 ± 16 ± 70 mV (max) mV (max) µA µA (max) µA (max) ppm/˚C ppm/˚C (max) ppm/˚C mV ± 40 ± 20 ± 20 0.6 ± 100 ± 100 ∆VR/∆IR Reverse Breakdown Voltage IRMIN ≤ IR ≤ 1 mA Change with Operating Current Change (Note 7) 1 mA ≤ IR ≤ 15 mA 1.3 2.5 7.0 10.0 18.0 1.3 2.5 10.0 18.0 1.5 mV (max) mV (max) mV mV (max) mV (max) Ω Ω (max) µVrms ZR eN ∆VR Reverse Dynamic Impedance Wideband Noise IR = 1 mA, f = 120 Hz, IAC = 0.1 IR IR = 150 µA 10 Hz ≤ f ≤ 10 kHz 0.6 1.5 130 Reverse Breakdown Voltage t = 1000 hrs Long Term Stability T = 25˚C ± 0.1˚C IR = 150 µA Thermal Hysteresis (Note 8) ∆T = −40˚C to +125˚C 120 ppm VHYST 0.08 % www.national.com 18 LM4040 LM4040-8.2 Electrical Characteristics (Industrial Temperature Range) Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25˚C. The grades C and D designate initial Reverse Breakdown Voltage tolerances of ± 0.5% and ± 1.0%, respectively. LM4040CIM3 LM4040CIZ Limits (Note 5) VR Reverse Breakdown Voltage IR = 150 µA Reverse Breakdown Voltage IR = 150 µA Tolerance (Note 6) IRMIN Minimum Operating Current 67 91 95 ∆VR/∆T Average Reverse Breakdown IR = 10 mA Voltage Temperature IR = 1 mA Coefficient (Note 6) IR = 150 µA 96 100 8.192 LM4040DIM3 LM4040DIZ Limits (Note 5) V Symbol Parameter Conditions Typical (Note 4) Units (Limit) ± 41 ± 94 ± 82 ± 162 mV (max) mV (max) µA µA (max) µA (max) ppm/˚C ppm/˚C (max) ppm/˚C mV ± 40 ± 20 ± 20 0.6 ± 100 ± 150 ∆VR/∆IR Reverse Breakdown Voltage IRMIN ≤ IR ≤ 1 mA Change with Operating Current Change (Note 7) 1 mA ≤ IR ≤ 15 mA 1.3 2.5 7.0 10.0 18.0 1.7 3.0 15.0 24.0 1.9 mV (max) mV (max) mV mV (max) mV (max) Ω Ω (max) µVrms ZR eN ∆V R Reverse Dynamic Impedance Wideband Noise IR = 1 mA, f = 120 Hz, IAC = 0.1 IR IR = 150 µA 10 Hz ≤ f ≤ 10 kHz 0.6 1.5 130 Reverse Breakdown Voltage t = 1000 hrs Long Term Stability T = 25˚C ± 0.1˚C IR = 150 µA Thermal Hysteresis (Note 8) ∆T = −40˚C to +125˚C 120 ppm VHYST 0.08 % 19 www.national.com LM4040 LM4040-10.0 Electrical Characteristics (Industrial Temperature Range) Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25˚C. The grades A and B designate initial Reverse Breakdown Voltage tolerances of ± 0.1% and ± 0.2%, respectively. LM4040AIM3 LM4040AIZ Limits (Note 5) VR Reverse Breakdown Voltage IR = 150 µA Reverse Breakdown Voltage IR = 150 µA Tolerance (Note 6) IRMIN Minimum Operating Current 75 100 103 ∆VR/∆T Average Reverse Breakdown IR = 10 mA Voltage Temperature IR = 1 mA Coefficient (Note 6) IR = 150 µA 100 103 10.00 LM4040BIM3 LM4040BIZ Limits (Note 5) V Symbol Parameter Conditions Typical (Note 4) Units (Limit) ± 10 ± 75 ± 20 ± 85 mV (max) mV (max) µA µA (max) µA (max) ppm/˚C ppm/˚C (max) ppm/˚C mV ± 40 ± 20 ± 20 0.8 ± 100 ± 100 ∆VR/∆IR Reverse Breakdown Voltage IRMIN ≤ IR ≤ 1 mA Change with Operating Current Change (Note 7) 1 mA ≤ IR ≤ 15 mA 1.5 3.5 8.0 12.0 23.0 1.5 3.5 12.0 23.0 1.7 mV (max) mV (max) mV mV (max) mV (max) Ω Ω (max) µVrms ZR eN ∆VR Reverse Dynamic Impedance Wideband Noise IR = 1 mA, f = 120 Hz, IAC = 0.1 IR IR = 150 µA 10 Hz ≤ f ≤ 10 kHz 0.7 1.7 180 Reverse Breakdown Voltage t = 1000 hrs Long Term Stability T = 25˚C ± 0.1˚C IR = 150 µA Thermal Hysteresis (Note 8) ∆T = −40˚C to +125˚C 120 0.08 ppm % VHYST www.national.com 20 LM4040 LM4040-10.0 Electrical Characteristics (Industrial Temperature Range) Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25˚C. The grades C and D designate initial Reverse Breakdown Voltage tolerances of ± 0.5% and ± 1.0%, respectively. LM4040CIM3 LM4040CIZ Limits (Note 5) VR Reverse Breakdown Voltage IR = 150 µA Reverse Breakdown Voltage IR = 150 µA Tolerance (Note 6) IRMIN Minimum Operating Current 75 100 103 ∆VR/∆T Average Reverse Breakdown IR = 10 mA Voltage Temperature IR = 1 mA Coefficient (Note 6) IR = 150 µA 110 113 10.00 LM4040DIM3 LM4040DIZ Limits (Note 5) V Symbol Parameter Conditions Typical (Note 4) Units (Limit) ± 50 ± 115 ± 100 ± 198 mV (max) mV (max) µA µA (max) µA (max) ppm/˚C ppm/˚C (max) ppm/˚C mV ± 40 ± 20 ± 20 0.8 ± 100 ± 150 ∆VR/∆IR Reverse Breakdown Voltage IRMIN ≤ IR ≤ 1 mA Change with Operating Current Change (Note 7) 1 mA ≤ IR ≤ 15 mA 1.5 3.5 8.0 12.0 23.0 2.0 4.0 18.0 29.0 2.3 mV (max) mV (max) mV mV (max) mV (max) Ω Ω (max) µVrms ZR eN ∆VR Reverse Dynamic Impedance Wideband Noise IR = 1 mA, f = 120 Hz, IAC = 0.1 IR IR = 150 µA 10 Hz ≤ f ≤ 10 kHz 0.7 1.7 180 Reverse Breakdown Voltage t = 1000 hrs Long Term Stability T = 25˚C ± 0.1˚C IR = 150 µA 120 ppm VHYST Thermal Hysteresis (Note 8) ∆T = −40˚C to +125˚C 0.08 % 21 www.national.com LM4040 Electrical Characteristics(Notes) Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test conditions. Note 2: The maximum power dissipation must be derated at elevated temperatures and is dictated by TJmax (maximum junction temperature), θJA (junction to ambient thermal resistance), and TA (ambient temperature). The maximum allowable power dissipation at any temperature is PDmax = (TJmax − TA)/θJA or the number given in the Absolute Maximum Ratings, whichever is lower. For the LM4040, TJmax = 125˚C, and the typical thermal resistance (θJA), when board mounted, is 326˚C/W for the SOT-23 package, and 180˚C/W with 0.4" lead length and 170˚C/W with 0.125" lead length for the TO-92 package and 415˚C/W for the SC70 Package. Note 3: The human body model is a 100 pF capacitor discharged through a 1.5 kΩ resistor into each pin. The machine model is a 200 pF capacitor discharged directly into each pin. Note 4: Typicals are at TJ = 25˚C and represent most likely parametric norm. Note 5: Limits are 100% production tested at 25˚C. Limits over temperature are guaranteed through correlation using Statistical Quality Control (SQC) methods. The limits are used to calculate National’s AOQL. Note 6: The boldface (over-temperature) limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage Tolerance ± [(∆VR/∆T)(max∆T)(VR)]. Where, ∆VR/∆T is the VR temperature coefficient, max∆T is the maximum difference in temperature from the reference point of 25˚C to T MIN or TMAX, and VR is the reverse breakdown voltage. The total over-temperature tolerance for the different grades in the industrial temperature range where max∆T = 65˚C is shown below: A-grade: ± 0.75% = ± 0.1% ± 100 ppm/˚C x 65˚C B-grade: ± 0.85% = ± 0.2% ± 100 ppm/˚C x 65˚C C-grade: ± 1.15% = ± 0.5% ± 100 ppm/˚C x 65˚C D-grade: ± 1.98% = ± 1.0% ± 150 ppm/˚C x 65˚C E-grade: ± 2.98% = ± 2.0% ± 150 ppm/˚C x 65˚C The total over-temperature tolerance for the different grades in the exteded temperature range where max ∆T = 100 ˚C is shown below: C-grade: ± 1.5% = ± 0.5% ± 100 ppm/˚C x 100˚C D-grade: ± 2.5% = ± 1.0% ± 150 ppm/˚C x 100˚C E-grade: ± 3.5% = ± 2.0% ± 150 ppm/˚C x 100˚C Therefore, as an example, the A-grade LM4040-2.5 has an over-temperature Reverse Breakdown Voltage tolerance of ± 2.5V x 0.75% = ± 19 mV. Note 7: Load regulation is measured on pulse basis from no load to the specified load current. Output changes due to die temperature change must be taken into account separately. Note 8: Thermal hysteresis is defined as the difference in voltage measured at +25˚C after cycling to temperature -40˚C and the 25˚C measurement after cycling to temperature +125˚C. www.national.com 22 LM4040 Typical Performance Characteristics Temperature Drift for Different Average Temperature Coefficient Output Impedance vs Frequency 01132304 01132310 Output Impedance vs Frequency Reverse Characteristics and Minimum Operating Current 01132311 01132312 Noise Voltage vs Frequency 01132313 23 www.national.com LM4040 Start-Up Characteristics LM4040-2.5 RS = 30k 01132305 01132307 LM4040-5.0 RS = 30k LM4040-10.0 RS = 30k 01132308 01132309 Functional Block Diagram 01132314 www.national.com 24 LM4040 Applications Information The LM4040 is a precision micro-power curvature-corrected bandgap shunt voltage reference. For space critical applications, the LM4040 is available in the sub-miniature SOT-23 and SC70 surface-mount package. The LM4040 has been designed for stable operation without the need of an external capacitor connected between the “+” pin and the “−” pin. If, however, a bypass capacitor is used, the LM4040 remains stable. Reducing design effort is the availability of several fixed reverse breakdown voltages: 2.048V, 2.500V, 3.000V, 4.096V, 5.000V, 6.000, 8.192V, and 10.000V. The minimum operating current increases from 60 µA for the LM40402.048 and LM4040-2.5 to 100 µA for the LM4040-10.0. All versions have a maximum operating current of 15 mA. LM4040s in the SOT-23 packages have a parasitic Schottky diode between pin 2 (−) and pin 3 (Die attach interface contact). Therefore, pin 3 of the SOT-23 package must be left floating or connected to pin 2. LM4040s in the SC70 have a parasitic Schottky diode between pin 1 (−) and pin 2 (Die attach interface contact). Therefore, pin 2 must be left floating or connected to pin1. The 4.096V version allows single +5V 12-bit ADCs or DACs to operate with an LSB equal to 1 mV. For 12-bit ADCs or DACs that operate on supplies of 10V or greater, the 8.192V version gives 2 mV per LSB. The typical thermal hysteresis specification is defined as the change in +25˚C voltage measured after thermal cycling. The device is thermal cycled to temperature -40˚C and then measured at 25˚C. Next the device is thermal cycled to temperature +125˚C and again measured at 25˚C. The resulting VOUT delta shift between the 25˚C measurements is thermal hysteresis. Thermal hysteresis is common in precision references and is induced by thermal-mechanical package stress. Changes in environmental storage temperature, operating temperature and board mounting temperature are all factors that can contribute to thermal hysteresis. In a conventional shunt regulator application (Figure 1) , an external series resistor (RS) is connected between the supply voltage and the LM4040. RS determines the current that flows through the load (IL) and the LM4040 (IQ). Since load current and supply voltage may vary, RS should be small enough to supply at least the minimum acceptable IQ to the LM4040 even when the supply voltage is at its minimum and the load current is at its maximum value. When the supply voltage is at its maximum and IL is at its minimum, RS should be large enough so that the current flowing through the LM4040 is less than 15 mA. RS is determined by the supply voltage, (VS), the load and operating current, (IL and IQ), and the LM4040’s reverse breakdown voltage, VR. Typical Applications 01132315 FIGURE 1. Shunt Regulator 25 www.national.com LM4040 Typical Applications (Continued) 01132316 **Ceramic monolithic *Tantalum FIGURE 2. LM4040-4.1’s Nominal 4.096 breakdown voltage gives ADC12451 1 mV/LSB www.national.com 26 LM4040 Typical Applications (Continued) 01132317 FIGURE 3. Bounded amplifier reduces saturation-induced delays and can prevent succeeding stage damage. Nominal clamping voltage is ± 11.5V (LM4040’s reverse breakdown voltage +2 diode VF). 01132318 FIGURE 4. Protecting Op Amp input. The bounding voltage is ± 4V with the LM4040-2.5 (LM4040’s reverse breakdown voltage + 3 diode VF). 27 www.national.com LM4040 Typical Applications (Continued) 01132319 FIGURE 5. Precision ± 4.096V Reference 01132321 01132322 FIGURE 6. Precision 1 µA to 1 mA Current Sources www.national.com 28 LM4040 Physical Dimensions unless otherwise noted inches (millimeters) Plastic Surface Mount Package (M3) NS Package Number MF03A (JEDEC Registration TO-236AB) 29 www.national.com LM4040 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) Plastic Package (Z) NS Package Number Z03A Molded Package (SC70) NS Package Number MAA05A www.national.com 30 LM4040 Precision Micropower Shunt Voltage Reference Notes National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications. For the most current product information visit us at www.national.com. LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. BANNED SUBSTANCE COMPLIANCE National Semiconductor manufactures products and uses packing materials that meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. 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