LT1389BCS8-5#PBF Analog Devices

LT1389 Nanopower Precision Shunt Voltage Reference FEATURES DESCRIPTIO n Initial Voltage Accuracy: 0.05% The LT 1389 is a nanopower, precision shunt voltage n reference. The bandgap reference uses trimmed preci- Low Operating Current: 800nA n sion thin-film resistors and improved curvature correction Low Drift: 10ppm/ C Max n techniques to achieve 0.05% initial voltage accuracy with Less Than 1W Dynamic Impedance n guaranteed 10ppm/ C maximum temperature drift. Volt- Available in 1.25V, 2.5V, 4.096V and age regulation is maintained to an ultralow 800nA operating 5V SO-8 Packages current. Advances in design, processing and packaging U achieve low temperature cycling hysteresis. APPLICATIO S The LT1389 does not require an output compensation n capacitor, but is stable with capacitive loads. Low dy- Portable Meters n namic impedance makes the LT1389 reference easy to Precision Regulators use from unregulated supplies. n A/D and D/A Converters n Calibrators The LT1389 reference can be used as a high performance upgrade to the LM185/LM385, LT1004, LT1034 and LT1634 where lowest power and guaranteed tempera- ture drift are required. , LTC and LT are registered trademarks of Linear Technology Corporation. TYPICAL APPLICATIO Temperature Drift 2.0 I = 0.8m A R V = 1.25V 1.5 OUT 5V 1.0 4.7M 0.5 V OUT 0 1.25V 0.5 LT1389-1.25 1.0 1389 TA01 1.5 2.0 0 10 20 30 40 50 60 70 TEMPERATURE (C) 1389 TA02 1 REFERENCE VOLTAGE CHANGE (mV) U ULT1389 UUW ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1) Operating Current ORDER PART 1.25V ............................................................... 20mA NUMBER TOP VIEW 2.5V ................................................................. 20mA LT1389ACS8-1.25 DNC* 1 8 DNC* 4.096V ............................................................. 10mA LT1389BCS8-1.25 DNC* 2 7 DNC* 5V .................................................................... 10mA LT1389BCS8-2.5 3 6 DNC* V Forward Current .................................................. 20mA OUT LT1389BCS8-4.096 GND 4 5 GND Operating Temperature Range ..................... 0 C to 70 C LT1389BCS8-5 Storage Temperature Range (Note 2) ... 65 C to 150 C S8 PACKAGE 8-LEAD PLASTIC SO S8 PART MARKING Lead Temperature (Soldering, 10 sec).................. 300 C T = 125 C, q = 190 C/ W JMAX JA 389A12 1389B4 389B12 1389B5 389B25 *Connected internally. Do Not Connect external circuitry to these pins. Consult factory for Industrial and Military grade parts. AVAILABLE OPTIO S OUTPUT TEMPERATURE COEFFICIENT TEMPERATURE VOLTAGE ACCURACY (%) (ppm/ C) PART TYPE PART MARKING 0 C to 70 C 1.250 0.05 10 LT1389ACS8-1.25 389A12 1.250 0.05 20 LT1389BCS8-1.25 389B12 2.500 0.05 20 LT1389BCS8-2.5 389B25 4.096 0.075 50 LT1389BCS8-4.096 1389B4 5.000 0.075 50 LT1389BCS8-5 1389B5 1.25V ELECTRICAL CHARACTERISTICS The l denotes specifications which apply over the full operating temperature range, otherwise specifications are at T = 25 C. (Note 3) A PARAMETER CONDITIONS MIN TYP MAX UNITS Reverse Breakdown Voltage LT1389ACS8/LT1389BCS8 (I = 0.8m A) 1.24937 1.250 1.25062 V R 0.05 0.05 % LT1389ACS8 (I = 0.8m A) l 1.24849 1.250 1.25149 V R 0.12 0.12 % LT1389BCS8 (I = 0.8m A) l 1.24762 1.250 1.25237 V R 0.19 0.19 % Reverse Breakdown Change 0.8m A I 200m A 0.20 0.4 mV R with Current (Note 4) l 0.20 1.0 mV 200m A I 2mA 0.3 1.0 mV R l 0.3 2.0 mV Minimum Operating Current l 0.6 m A Temperature Coefficient LT1389ACS8 (I = 0.8m A) l 4 10 ppm/ C R LT1389BCS8 (I = 0.8m A) l 4 20 ppm/ C R Reverse Dynamic Impedance (Note 5) 0.8m A I 2mA 0.25 0.7 W R l 0.25 1.5 W Low Frequency Noise (Note 6) I = 0.8m A, 0.1Hz f 10Hz 25 m V R P-P 2 U U WWW