LM185H-1.2

LM185-1.2 LINER | Alldatasheet

Document overview

• Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
• PDF pages: 8

Technical content

LM185-1.2/ FEATURES DESCRIPTIO U APPLICATIO SU TYPICAL APPLICATIO U n Portable Meter References n Portable Test Instruments n Battery Operated Systems n Current Loop Instrumentation n 10mA to 20mA Operating Range n Guaranteed 1% Initial Voltage Tolerance n Guaranteed 1W Dynamic Impedance n Very Low Power Consumption Micropower Voltage Reference Reverse Voltage Change with Current The LM185-1.2 is a two terminal band gap reference diode that has been designed for applications which require precision performance with micropower operation. The device provides guaranteed operating specifications at currents as low as 10mA. The nominal voltage is 1.235V with both 1% and 2% tolerances available. Some addi- tional features are: maximum dynamic impedance of 1W , low noise and excellent stability over time and tempera- ture. Advanced design, processing and testing techniques make Linear’s LM185-1.2 a superior choice over previous designs. A micropower 5V reference application is shown below. For guaranteed TC, micropower references, see the LT1034 data sheet. , LTC and LT are registered trademarks of Linear Technology Corporation. Micropower 5V Reference 185/285/385 TA01a LM385-1.2 LM334 LT1494 R 5.6k 150pF 3.01M 1%1M VIN 7V TO 15V REVERSE CURRENT (mA) OUTPUT VOLTAGE CHANGE (mV) 0.01 1 10 100 185/285/385 TA01b 0.1 TA = 25°C

LM185-1.2/ ABSOLUTE AXI U RATI GSW WW U Operating Temperature Range ORDER PART NUMBER TJMAX = 150°C, qJA = 160°C/W LM185H-1.2 LM285H-1.2 LM385H-1.2 LM385BH-1.2 PACKAGE/ORDER I FOR ATIOUU W Consult LTC Marketing for parts specified with wider operating temperature ranges. OBSOLETE PACKAGE (NOTE 3) TJMAX = 150°C, qJA = 440°C/W, qJC = 80°C/W (NOTE 3) TOP VIEW NC NC NC NC S8 PACKAGE 8-LEAD PLASTIC SO NC (DO NOT USE) BOTTOM VIEW Z PACKAGE 3-LEAD PLASTIC TO-92 BOTTOM VIEW H PACKAGE 2-LEAD TO-46 METAL CAN LM385BS8-1.2 LM385S8-1.2 ORDER PART NUMBER 3851 3851B S8 PART MARKING TJMAX = 150°C, qJA = 190°C/W ORDER PART NUMBER LM285Z-1.2 LM385Z-1.2 LM385BZ-1.2 Consider the S8 or Z Packages for Alternate Source

LM185-1.2/

ELECTRICAL CHARACTERISTICS

Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: Selected devices with guaranteed maximum temperature coefficient are available upon request. The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. For the LM185-1.2 TMIN = –55°C and TMAX = 125°C. For LM285-1.2 TMIN = –40°C and TMAX = 85°C.For LM385-1.2 TMIN = 0°C and TMAX = 70°C. For MIL-STD components, please refer to LTC883C data sheet for test listing and parameters. SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS VZ Reverse Breakdown Voltage T A = 25°C, IMIN £ IR £ 20mA LM185-1.2 1.223 1.235 1.247 V LM385-1.2 1.205 1.235 1.260 V LM385B-1.2 (Note 3) 1.223 1.235 1.247 V DVZ Average Temperature Coefficient I MIN £ IR £ 20mA (Notes 2, 3) 20 20 ppm/ °C DTemp IMIN Minimum Operating Current T MIN␣£␣TA £␣TMAX l 81 0 8 1 5 mA DVZ Reverse Breakdown Voltage I MIN £ IR £ 1mA DIR Change with Current T A = 25°C1 1 m V TMIN £ TA £ TMAX l 1.5 1.5 mV 1mA £ IR £ 20mA TA = 25°C1 0 1 0 m V TMIN £ TA £ TMAX l 20 25 mV rZ Reverse Dynamic Impedance I R = 100mA TA =25°C 0.2 0.6 0.4 1.0 W TMIN £ TA £ TMAX l 1.5 1.5 W en Wideband Noise (RMS) I R = 100mA, 10Hz £ f £ 10kHz 60 60 mV DVZ Long Term Stability I R = 100mA, TA = 25°C – 0.1 °C 20 20 ppm/kHr DTime LM385-1.2/LM385B-1.2 Note 3: For applications requiring low initial tolerance guaranteed over temperature consult the LT1004 data sheet.

LM185-1.2/ Reverse Characteristics Foward Characteristics Temperature Drift Reverse Dynamic Impedance Reverse Dynamic Impedance Noise Voltage Filtered Output Noise Response Time TYPICAL PERFOR A CE CHARACTERISTICSUW REVERSE VOLTAGE (V) REVERSE CURRENT (µA) 100 0.1 0.6 1.0 185/285/385 G01 –55°C TO 125°C FORWARD CURRENT (mA) FORWARD VOLTAGE (V) 1.2 0.8 0.4 0.01 1 10 100 185/285/385 G02 0.1 TA = 25°C TEMPERATURE (°C) –55 REVERSE VOLTAGE (V) –15 25 45 125 185/285/385 G03 –35 5 65 85 105 1.245 1.240 1.235 1.230 REVERSE CURRENT (mA) DYNAMIC IMPEDANCE (Ω ) 100 0.1 0.01 1 10 100 185/285/385 G04 0.1 –55°C TO 125°C f = 25Hz FREQUENCY (Hz) DYNAMIC IMPEDANCE (Ω ) 10k 100 0.1 100k 185/285/385 G05 100 1k 10k 1M TA = 25°C IR = 100µA NOISE (nV/ÖHz) 700 600 500 400 300 200 100 FREQUENCY (Hz) 10 1k 10k 100k 185/285/385 G06 100 IR = 100µA INTEGRATED NOISE (µVRMS) CUTOFF FREQUENCY (Hz) 1k 10k 100k 185/285/385 G07 100 R C 100µA IR = 100µA RC LOW PASS TIME (µs) VOLTAGE (V) 2.0 1.5 1.0 0.5 185/285/385 G08 –100 0 100 200 300 400 500 INPUT OUTPUT VIN 36k VOUT

LM185-1.2/ WSCHE ATIC DIAGRA W 185/285/385 SD Q2 Q5 Q12 Q11 Q13 Q10 Q6 Q14 Q8 20pF 20pF 7.5k 100k 200k 50k 300k 500Ω 60k 600k

LM185-1.2/ PACKAGE DESCRIPTIO U 0.050 (1.27) BSC 0.060 – 0.005 (1.524– 0.127) DIA 0.90 (2.286) NOM 0.180 – 0.005 (4.572 – 0.127) 0.180 – 0.005 (4.572 – 0.127) 0.500 (12.70) MIN 0.050 (1.270) MAX UNCONTROLLED LEAD DIMENSION 0.016 – 0.003 (0.406 – 0.076) NOM 0.015 – 0.002 (0.381 – 0.051) 0.060 – 0.010 (1.524 – 0.254) 10° NOM 0.140 – 0.010 (3.556 – 0.127) Z3 (TO-92) 0401 0.098 +016/–0.04 (2.5 +0.4/–0.1)

2 PLCS

REFER TO TAPE AND REEL SECTION OF LTC DATA BOOK FOR ADDITIONAL INFORMATION 0.016 – 0.021** (0.406 – 0.533) DIA 0.025 (0.635) MAX 0.085 – 0.105 (2.159 – 2.667) 0.500 (12.700) MIN 0.178 – 0.195 (4.521 – 4.953) 0.209 – 0.219 (5.309 – 5.537) 0.100 (2.540) TYP 45° H02/03(TO-46) 1098 0.050 (1.270) TYP 0.050 (1.270) TYP 0.028 – 0.048 (0.711 – 1.219) 0.036 – 0.046 (0.914 – 1.168) FOR 3-LEAD PACKAGE ONLY REFERENCE PLANE * LEAD DIAMETER IS UNCONTROLLED BETWEEN THE REFERENCE PLANE AND 0.045" BELOW THE REFERENCE PLANE FOR SOLDER DIP LEAD FINISH, LEAD DIAMETER IS 0.016 – 0.024 (0.406 – 0.610) PIN 1 H Package 2-Lead and 3-Lead TO-46 Metal Can (Reference LTC DWG # 05-08-1340) Z Package 3-Lead Plastic TO-92 (Similar to TO-226) (Reference LTC DWG # 05-08-1410) OBSOLETE PACKAGE

LM185-1.2/ PACKAGE DESCRIPTIO U 0.016 – 0.050 (0.406 – 1.270) 0.010 – 0.020 0°– 8° TYP 0.008 – 0.010 (0.203 – 0.254) SO8 1298 0.053 – 0.069 (1.346 – 1.752) 0.014 – 0.019 (0.355 – 0.483) TYP 0.004 – 0.010 (0.101 – 0.254) 0.050 (1.270) BSC 1 2 3 4 0.150 – 0.157** (3.810 – 3.988) 8 7 6 5 0.189 – 0.197* (4.801 – 5.004) 0.228 – 0.244 (5.791 – 6.197) DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE 8-Lead Plastic Small Outline (Narrow .150 Inch) (Reference LTC DWG # 05-08-1610) 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 represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.

LM185-1.2/ Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 l FAX: (408) 434-0507 l www.linear.com ª LINEAR TECHNOLOGY CORPORATION 1985 18512fa LT/CP 0901 1.5K REV A • PRINTED IN USA RELATED PARTS PART NUMBER DESCRIPTION COMMENTS LT1004-1.2 Micropower Shunt Reference 0.3% Initial Accuracy LT1034 1.2V Micropower Shunt Reference 40ppm/ °C Max Temperature Coefficient Micropower Reference for 9V Battery 1.2V Reference from 1.5V Battery 185/285/385 TA02 510k LM385-1.2 1.23V 185/285/385 TA03 1.5V LM385-1.2 1.23V TYPICAL APPLICATIO SU