LM329

LM129/LM329 6.9V Precision Voltage Reference FEATURES s s s s DESCRIPTIO Guaranteed 10ppm/°C Temperature Coefficient Guaranteed 1Ω Maximum Dynamic Impedance Guaranteed 20µV Maximum Wideband Noise Wide Operating Current Range 0.6mA to 15mA APPLICATIO S s s s s Transducers A/D and D/A Converters Calibration Standards Instrumentation Reference The LM129 temperature compensated 6.9V zener references provide excellent stability over time and temperature, very low dynamic impedance and a wide operating current range. The device achieves low dynamic impedance by incorporating a high gain shunt regulator around the zener. The excellent noise performance of the device is achieved by using a “buried zener” design which eliminates surface noise phenomenon associated with ordinary zeners. To serve a wide variety of applications, the LM129 is available in several temperature coefficient grades and two package styles. A 20mA positive current source application is shown below. , LTC and LT are registered trademarks of Linear Technology Corporation. TYPICAL APPLICATIO 20mA Positive Current Source 20V REVERSE VOLTAGE CHANGE (mV) 20k 0.1% 174Ω 0.1% 8 7 6 5 4 3 2 1 0 0 Reverse Voltage Change TA = 25°C LM329 6.95V 2 – + 7 LT1001 6 3 20k 0.1% 4 10k OUT 20mA 129/329 TA01 4.3k U 2 4 8 6 REVERSE CURRENT (mA) 10 129/329 TA01b U U 1 LM129/LM329 ABSOLUTE AXI U RATI GS U WW U W (Note 1) Operating Temperature Range LM129 (OBSOLETE) ................... –55°C to 125°C LM329 ..................................................... 0°C to 70°C Storage Temperature Range ................. – 65°C to 150°C Lead Temperature (Soldering, 10 sec).................. 300°C Reverse Breakdown Current ................................. 30mA Forward Current ..................................................... 2mA PACKAGE/ORDER I FOR ATIO BOTTOM VIEW ORDER PART NUMBER LM129AH LM329AH LM129BH LM329BH LM129CH LM329CH LM329DH H PACKAGE 2-LEAD TO-46 METAL CAN TJMAX = 150°C, θJA = 440°C/W, θJC = 80°C/W OBSOLETE PACKAGE Consider the Z Package for Alternate Source Consult LTC Marketing for availability of LM329AZ,LM329CZ and LM329DZ The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 2) LM129A/ LM129B/LM129C MIN TYP MAX 6.7 q q q q q q q ELECTRICAL CHARACTERISTICS PARAMETER Reverse Breakdown Voltage Reverse Breakdown Voltage Change with Current Temperature Coefficient CONDITIONS SYMBOL VZ ∆VZ ∆IR ∆VZ ∆Temp TA = 25°C, 0.6mA ≤ IR ≤ 15mA TA = 25°C, 0.6mA ≤ IR ≤ 15mA 1mA ≤ IR ≤ 15mA IR = 1mA, LM129A/LM329A LM129A/LM329B LM129A/LM329C LM329D 1mA ≤ IR ≤ 15mA TA =25°C, IR = 1mA 1mA ≤ IR ≤ 15mA TA =25°C, 10Hz ≤ f ≤ 10kHz TA = 45°C ±0.1 ° C, IR = 1mA ±0.3% Change in Temperature Coefficient rZ en ∆VZ ∆Time Dynamic Impedance RMS Noise Long Term Stability Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. 2 U BOTTOM VIEW W ORDER PART NUMBER LM329AZ LM329BZ LM329CZ LM329DZ Z PACKAGE 3-LEAD PLASTIC TO-92 TJMAX = 150°C, θJA = 160°C/W LM329A/LM329B/ LM329C/LM329D MIN TYP MAX 6.6 6.9 9 12 6 15 30 50 1 7.25 20 UNITS V mV mV ppm/°C ppm/°C ppm/°C ppm/°C ppm/°C 6.9 9 12 6 15 30 7.2 14 10 20 50 10 20 50 100 1 0.6 0.8 7 20 1 20 0.8 1 7 20 2 100 Ω Ω µV ppm/kHr Note 2: To determine the junction temperature as a function of the ambient temperature, see θJA for each package. LM129/LM329 TYPICAL PERFOR A CE CHARACTERISTICS Reverse Characteristics 100 100 10 DYNAMIC IMPEDANCE (Ω) REVERSE CURRENT (mA) VOLTAGE (V) 1.0 Tj = 55°C 0.1 Tj = 25°C Tj = 125°C 0.01 6.45 . 6.55 6.65 6.75 6.85 6.95 REVERSE VOLTAGE (V) Forward Characteristics 1.2 1.0 FORWARD VOLTAGE (V) NOISE (nV/√Hz) 0.8 0.6 0.4 0.2 0 0.001 50 0.01 0.1 1.0 FORWARD CURRENT (mA) 10 129/329 G04 TA = 25°C 100 10 100 1k FREQUENCY (Hz) 10k 100k 129/329 G05 NOISE (10µV/DIV) SCHE ATIC DIAGRA 50Ω Q1 30k 2k 2.6k 2 129/329 SD Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. W UW 7.05 129/329 G01 Dynamic Impedance TA = 25°C Response Time 8 6 OUTPUT 10 4 2 0 14 VIN 6.8k VOUT 1.0 INPUT 0 100 200 300 TIME (µs) 400 129/329 G03 0.1 10 100 1k 10k FREQUENCY (Hz) 100k 129/329 G02 0 Noise Voltage 150 Low Frequency Noise Voltage 0.01Hz TO 1Hz 0 50 150 100 TIME (µs) 200 250 129/329 G06 W 1 Q2 D1 6.2V Q3 2k Q4 10k 30pF Q7 1k Q5 15pF Q6 + – 3 LM129/LM329 TYPICAL APPLICATIO S Common Reference 15V 9V TO 40V 9k RS IMIN ≥ 0.6mA LM329 6.9V LM329 6.9V 129/329 TA02 PACKAGE DESCRIPTIO (Reference LTC DWG # 05-08-1340) 0.209 – 0.219 (5.309 – 5.537) 0.178 – 0.195 (4.521 – 4.953) 0.500 (12.700) MIN * 0.085 – 0.105 (2.159 – 2.667) H Package 2-Lead and 3-Lead TO-46 Metal Can REFERENCE PLANE 0.025 (0.635) MAX 0.016 – 0.021** (0.406 – 0.533) DIA 0.050 (1.270) TYP 0.100 (2.540) TYP PIN 1 FOR 3-LEAD PACKAGE ONLY 45° 0.036 – 0.046 (0.914 – 1.168) 0.028 – 0.048 (0.711 – 1.219) H02/03(TO-46) 1098 0.050 (1.270) TYP *LEAD DIAMETER IS UNCONTROLLED BETWEEN THE REFERENCE PLANE AND 0.045" BELOW THE REFERENCE PLANE 0.016 – 0.024 **FOR SOLDER DIP LEAD FINISH, LEAD DIAMETER IS (0.406 – 0.610) OBSOLETE PACKAGE RELATED PARTS PART NUMBER LT1460 LT1634 DESCRIPTION Micropower, Precise Series Reference 0.05% Accurate, 10ppm/°C, Shunt Reference COMMENTS 10ppm/°C, Output Voltages: 2.5V, 3V, 3.3V, 5V, 10V Output Voltages: 1.25V, 2.5V, 4.096V, 5V 4 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 q FAX: (408) 434-0507 q U U Buffered Reference Using a Single Supply 7.5k 2 – + 7 LT1001 6 10V 3 20k 1% 4 129/329 TA03 Z Package 3-Lead Plastic TO-92 (Similar to TO-226) (Reference LTC DWG # 05-08-1410) 0.060 ± 0.005 (1.524± 0.127) DIA 0.180 ± 0.005 (4.572 ± 0.127) 0.180 ± 0.005 (4.572 ± 0.127) 0.90 (2.286) NOM 0.500 (12.70) MIN 0.050 UNCONTROLLED (1.270) LEAD DIMENSION MAX 5° NOM 0.050 (1.27) BSC 0.016 ± 0.003 (0.406 ± 0.076) 0.015 ± 0.002 (0.381 ± 0.051) 0.098 +016/–0.04 (2.5 +0.4/–0.1) 2 PLCS Z3 (TO-92) 0401 0.060 ± 0.010 (1.524 ± 0.254) 0.140 ± 0.010 (3.556 ± 0.127) TO-92 TAPE AND REEL REFER TO TAPE AND REEL SECTION OF LTC DATA BOOK FOR ADDITIONAL INFORMATION 10° NOM 129329fa LT/CP 0901 1.5K REV A • PRINTED IN USA www.linear.com © LINEAR TECHNOLOGY CORPORATION 1985