LT1034-1.2/LT1034-2.5 Micropower Dual Reference U FEATURES ■ ■ ■ ■ ■ DESCRIPTIO Guaranteed 20 ppm/°C Drift Guaranteed 40 ppm/°C Drift (SO-8 Package) 20µA to 20mA Operation (1.2V) Dynamic Impedance: 1Ω 7V, 100µA Reference U APPLICATIO S ■ ■ ■ Portable Meters Precision Regulators Calibrators The LT ® 1034 is a micropower, precision 1.2V/2.5 reference combined with a 7V auxiliary reference. The 1.2V/2.5V reference is a trimmed, thin-film, band-gap, voltage reference with 1% initial tolerance and guaranteed 20ppm/°C temperature drift. Operating on only 20µA, the LT1034 offers guaranteed drift, low temperature cycling hysteresis and good long-term stability. The low dynamic impedance makes the LT1034 easy to use from unregulated supplies. The 7V reference is a subsurface zener device for less demanding applications. The LT1034 reference can be used as a high performance upgrade of the LM385 or LT1004, where guaranteed temperature drift is desired. , LTC and LT are registered trademarks of Linear Technology Corporation. U TYPICAL APPLICATIO Temperature Drift LT1034CS8-1.2 15V 2.5 50k 500k 1.2V OR 2.5V OUTPUT 7V OUTPUT 7V 1.225V OR 2.500V REVERSE VOLTAGE CHANGE (mV) 2.0 1.5 1.0 0.5 0 –0.5 –1.0 –1.5 –2.0 LT1034 • TA01 –2.5 –50 –25 50 25 0 75 TEMPERATURE (°C) 100 125 LT1034 • TPC02 1034fe 1 LT1034-1.2/LT1034-2.5 W W U W ABSOLUTE MAXIMUM RATINGS (Note 1) Operating Current ................................................. 20mA Forward Current (Note 2) ..................................... 20mA Storage Temperature Range ................. – 65°C to 150°C Lead Temperature (Soldering, 10 sec).................. 300°C Operating Temperature Commercial ............................................. 0° to 70°C Industrial .......................................... – 40°C to 85°C Military (OBSOLETE) ................. – 55°C to 125°C U W U PACKAGE/ORDER INFORMATION BOTTOM VIEW 1.2V 7V H PACKAGE 3-LEAD TO-46 METAL CAN TJMAX = 150°C, θJA = 440°C/ W, θJC = 80°C/ W LT1034BCH-1.2 LT1034BCH-2.5 LT1034BMH-1.2 LT1034BMH-2.5 LT1034CH-1.2 LT1034CH-2.5 LT1034MH-1.2 LT1034MH-2.5 OBSOLETE PACKAGE Consider the Z Package for Alternate Source BOTTOM VIEW 1.2V 7V Z PACKAGE 3-LEAD TO-92 PLASTIC TJMAX = 100°C, θJA = 160°C/ W ORDER PART NUMBER ORDER PART NUMBER ORDER PART NUMBER TOP VIEW NC 1 8 2.5V NC 2 7 NC NC 3 6 2.5V GND 4 5 7V S8 PACKAGE 8-LEAD PLASTIC SO TJMAX = 175°C, θJA = 150°C/ W LT1034CS8-1.2 LT1034CS8-2.5 LT1034IS8-1.2 LT1034IS8-2.5 PART MARKING 3401 3402 1034I12 34I02 LT1034BCZ-1.2 LT1034BCZ-2.5 LT1034BIZ-1.2 LT1034BIZ-2.5 LT1034CZ-1.2 LT1034CZ-2.5 LT1034IZ-1.2 LT1034IZ-2.5 Consult LTC Marketing for parts specified with wider operating temperature ranges. 1034fe 2 LT1034-1.2/LT1034-2.5 ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. PARAMETER Reverse Breakdown Voltage CONDITIONS IR = 100µA Reverse Breakdown Change with Current (Note 4) ● ● 2mA ≤ IR ≤ 20mA ● Minimum Operating Current Temperature Coefficient IR = 100µA Reverse Dynamic Impedance (Note 3) IR = 100µA Low Frequency Noise Long-Term Stability IR = 100µA, 0.1Hz ≤ F ≤ 10Hz IR = 100µA ● LT1034B LT1034 ● ● ● LT1034-1.2 MIN TYP MAX 1.210 1.225 1.240 1.205 1.225 1.245 0.5 2.0 1.0 4.0 4.0 8.0 6.0 15.0 10 20 10 20 20 40 0.25 1.0 0.50 2.0 4 20 MIN 2.46 2.43 LT1034-2.5 TYP MAX 2.5 2.54 2.5 2.57 1.0 3.0 1.5 6.0 6.0 16.0 10.0 20.0 15 30 10 20 20 40 0.5 1.5 1.0 2.5 6 20 UNITS V V mV mV mV mV µA ppm/°C ppm/°C Ω Ω µVP-P ppm/√khrs The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. 7V Reference. PARAMETER Reverse Breakdown Voltage CONDITIONS IR = 100µA Reverse Breakdown Change with Current 100µA ≤ IR ≤ 1mA 100µA ≤ IR ≤ 1mA 1mA ≤ IR ≤ 20mA 1mA ≤ IR ≤ 20mA IR = 100µA IR = 100µA ● Temperature Coefficient Long-Term Stability Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: Forward biasing either diode will affect the operation of the other diode. ● ● ● MIN 6.80 6.75 TYP 7.0 7.0 90 100 160 200 40 20 MAX 7.3 7.4 140 190 250 350 UNITS V V mV mV mV mV ppm/°C ppm/√khrs Note 3: This parameter guaranteed by “reverse breakdown change with current” test. Note 4: For the LT1034-1.2: 20µA ≤ IR ≤ 2mA. For the LT1034-2.5: 30µA ≤ IR ≤ 2mA. 1034fe 3 LT1034-1.2/LT1034-2.5 U W TYPICAL PERFORMANCE CHARACTERISTICS Reverse Voltage Change 1.2V Reverse Voltage Change 7V 8 11 0.4 TA = –55°C TO 125°C 10 TA = 25°C 6 1.2V 4 2 0 8 0.3 6 7V 4 0.2 2µV/DIV REVERSE VOLTAGE CHANGE(V) REVERSE VOLTAGE CHANGE (mV) 0.1Hz to 10Hz Noise 1.2V 0.1 2 0 –2 –4 –6 0 –8 –10 –2 0.01 0.1 1 10 REVERSE CURRENT (mA) –0.1 100 –11 0.1 10 0 100 0.1 0.01 0.1 1 10 REVERSE CURRENT (mA) 100 50 40 30 20 10 0 0.01 0.1 1 10 100 FREQUENCY (kHz) LT1034 • TPC04 5 6 7 1s/DIV 8 9 10 11 12 100 IZ = 100µA REVERSE DYNAMIC IMPEDANCE (Ω) REVERSE DYNAMIC IMPEDANCE (Ω) 1 4 Reverse Dynamic Impedance 7V 60 10 3 LT1034 • TPC03 Reverse Dynamic Impedance 2.5V 100 1.2V 2 LT1034 • TPC02 Reverse Dynamic Impedance 1.2V TA = 25°C f = 25Hz 1 REVERSE CURRENT (mA) LT1034 • TPC01 REVERSE DYNAMIC IMPEDANCE (Ω) 1 LT1034 • TPC05 TA = 25°C IZ = 100µA 10 1.2V 1 0.1 10 100 1k 10k FREQUENCY (Hz) 100k LT1034 • TPC06 1034fe 4 LT1034-1.2/LT1034-2.5 U W TYPICAL PERFORMANCE CHARACTERISTICS Reverse Characteristics 1.2V Reverse Characteristics 2.5V Reverse Characteristics 7V 100 16 100 12 8 4 REVERSE CURRENT (µA) REVERSE CURRENT (mA) REVERSE CURRENT (µA) TA = –55°C TO 125°C VREF = 1.2V 10 1 0.1 TA = –55°C TO 125°C VREF = 7V 80 60 40 20 0 0 0.8 0.4 1.2 REVERSE VOLTAGE (V) 1.6 0.01 2.490 2.495 2.500 2.505 0 2.510 0 1 2 REVERSE VOLTAGE (V) 3 4 5 6 7 8 REVERSE VOLTAGE (V) Forward Characteristics 10 LT1034 • TPC09 LT1034 • TPC02 LT1034 • TPC07 9 Response Time Response Time 1.2 8 OUTPUT 6 1.5 OUTPUT 82k 4 VIN VOUT VOLTAGE (V) 0.8 VOLTAGE (V) FORWARD VOLTAGE (V) TA = 25°C 7V 2 0 1.0 36k VIN VOUT 0.5 1.2V 0 0.4 INPUT 15 0 0.01 0 0.1 1 10 100 FORWARD CURRENT (mA) LT1034 • TPC10 INPUT 5 0 0 40 20 TIME (µs) 60 80 LT1180A • TPC11 0 200 100 TIME (µs) 300 400 LT1180A • TPC12 1034fe 5 LT1034-1.2/LT1034-2.5 U PACKAGE DESCRIPTIO H Package 8-Lead TO-5 Metal Can (.200 Inch PCD) (Reference LTC DWG # 05-08-1320) 0.209 – 0.219 (5.309 – 5.537) 0.178 – 0.195 (4.521 – 4.953) REFERENCE PLANE 0.085 – 0.105 (2.159 – 2.667) 0.500 (12.700) MIN 0.100 (2.540) TYP 0.050 (1.270) TYP 0.050 (1.270) TYP PIN 1 * FOR 3-LEAD PACKAGE ONLY 0.025 (0.635) MAX 45° 0.028 – 0.048 (0.711 – 1.219) 0.036 – 0.046 (0.914 – 1.168) 0.016 – 0.021** (0.406 – 0.533) DIA H02/03(TO-46) 1098 *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 S8 Package 8-Lead Plastic Small Outline (Narrow .150 Inch) (Reference LTC DWG # 05-08-1610) 0.189 – 0.197* (4.801 – 5.004) 8 7 6 5 0.150 – 0.157** (3.810 – 3.988) 0.228 – 0.244 (5.791 – 6.197) SO8 1298 1 0.010 – 0.020 × 45° (0.254 – 0.508) 0.008 – 0.010 (0.203 – 0.254) 0.053 – 0.069 (1.346 – 1.752) 0°– 8° TYP 0.016 – 0.050 (0.406 – 1.270) 0.014 – 0.019 (0.355 – 0.483) TYP *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 2 3 4 0.004 – 0.010 (0.101 – 0.254) 0.050 (1.270) BSC 1034fe 6 LT1034-1.2/LT1034-2.5 U PACKAGE DESCRIPTIO Z Package 3-Lead Plastic TO-92 (Similar to TO-226) (Reference LTC DWG # 05-08-1410) 0.180 ± 0.005 (4.572 ± 0.127) 0.060 ± 0.005 (1.524± 0.127) DIA 0.90 (2.286) NOM 0.180 ± 0.005 (4.572 ± 0.127) 0.500 (12.70) MIN 0.050 UNCONTROLLED (1.270) LEAD DIMENSION MAX 0.016 ± 0.003 (0.406 ± 0.076) 0.050 (1.27) BSC 0.060 ± 0.010 (1.524 ± 0.254) 0.140 ± 0.010 (3.556 ± 0.127) 5° NOM 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 TO-92 TAPE AND REEL REFER TO TAPE AND REEL SECTION OF LTC DATA BOOK FOR ADDITIONAL INFORMATION 10° NOM 1034fe 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. 7 LT1034-1.2/LT1034-2.5 RELATED PARTS PART NUMBER DESCRIPTION COMMENTS LT1004 Low Cost Precision Band-Gap Micropower, SO-8, Industrial Temperature Options LT1019 Precision Series or Shunt Band-Gap Low Dropout, Multiple Output Options LT1236 Precision Series or Shunt Buried Zener Low Noise, Low Power, Multiple Output Options 1034fe 8 Linear Technology Corporation LT/CPI 0102 1.5K REV E • PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com LINEAR TECHNOLOGY CORPORATION 1995