Datasheet

ManualsBrandsLINEAR TECHNOLOGY ManualsPMICsPMIC - voltage reference Shunt, Dual Adjustable TO 92 3

LT1034-1.2/LT1034-2.5

1034fe

FEATURES

DESCRIPTIO

APPLICATIO S

Micropower Dual

Reference

■

Guaranteed 20 ppm/

C Drift

■

Guaranteed 40 ppm/

C Drift (SO-8 Package)

■

A to 20mA Operation (1.2V)

■

Dynamic Impedance: 1Ω

■

7V, 100µA Reference

The LT

1034 is a micropower, precision 1.2V/2.5 refer-

ence combined with a 7V auxiliary reference. The 1.2V/2.5V

reference is a trimmed, thin-film, band-gap, voltage refer-

ence with 1% initial tolerance and guaranteed 20ppm/°C

temperature drift. Operating on only 20µA, the LT1034

offers guaranteed drift, low temperature cycling hyster-

esis and good long-term stability. The low dynamic im-

pedance 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.

■

Portable Meters

■

Precision Regulators

■

Calibrators

Temperature Drift LT1034CS8-1.2

TEMPERATURE (°C)

–50

REVERSE VOLTAGE CHANGE (mV)

2.5

2.0

1.5

1.0

0.5

–0.5

–1.0

–1.5

–2.0

–2.5

LT1034 • TPC02

–25

100

125

15V

7V OUTPUT

1.2V OR 2.5V

OUTPUT

50k

500k

1.225V

OR 2.500V

LT1034 • TA01

TYPICAL APPLICATIO

Summary of content (8 pages)

PAGE 1
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.
PAGE 2
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 ..........................................
PAGE 3
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.
PAGE 4
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.
PAGE 5
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.
PAGE 6
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.
PAGE 7
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.
PAGE 8
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.