TS821 1.225V MICROPOWER VOLTAGE REFERENCE .. . . .. 1.225V TYP OUTPUT VOLTAGE ULTRA LOW OPERATING CURRENT : 40µA typ. o HIGH PRECISION @ 25 C +/-2% (Standard version) +/-1% (A grade) +/-0.5% (B grade) HIGH STABILITY WHEN USED WITH CAPACITIVE LOADS o WIDE TEMPERATURE RANGE : -40 to +85 C T092 & SOT23-3 PACKAGES Z TO92 (Plastic Package) DESCRIPTION The TS821 is a micropowerintegrated circuit which is a high stability, two terminals, band gap reference providing a stable output voltage over the industrial temperature range (-40 to +85oC). The minimum operating current is guaranteed at 50µA over the full operating temperature range. L SOT-23L (Plastic Micropackage) ORDER CODES .. .. . APPLICATIONS Precision Computers Instrumentation Battery chargers Switch Mode Power Supply Battery operated equipements TO92 SOT23-3 SOT23 Marking 2% TS821IZ TS821ILT L213 1% TS821AIZ TS821AILT L212 0.5% TS821BIZ TS821BILT L211 Single temperature range : -40 to +85 oC PIN CONNECTIONS (top view) S OT23-3 TO92 Ca thode 1 3 Anode 1 NC May 2000 2 3 Ca thod e Anod e * 2 * This pin must be le ft floa ting or conne cte d to pin 2 1/7 TS821 ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit mA Ik Reverse Breakdown Current 20 If Forward Current 10 mA Pd Power Dissipation 360 625 mW Toper Tstg SOT23-3 TO92 Operating Free Air Temperature Range Storage Temperature o Note : -40 to +85 o C -65 to +150 o C o Pd has been calculated with T amb = 25 C and Tj = 125 C and o Rthja = 200 C/W for TO92 package o Rthja = 340 C/W for SOT23 package OPERATING CONDITIONS Symbol Value Unit Irmin Minimum Operating Current Parameter 45 µA Irmax Maximum Operating Current 12 mA ELECTRICAL CHARACTERISTICS TS821 (2% Precision) o Tamb = 25 C (unless otherwise specified) Symbol Vk Ikmin Parameter Test Condition o Min. Typ. Max. 1.225 1.250 V +25 +36 mV Reverse Breakdown Voltage Ik = 100µA @ Tamb = 25 C 1.200 Reverse Breakdown Voltage Tolerance Ik = o100µA @ Tamb =o 25oC -40 C < Tamb < +85 C -25 -36 Minimum Operating Current Tamb = 25 C Unit 45 µA -40 C < Tamb < +85oC 50 µA 150 ppm/oC o 40 o ∆Vref/∆T Average Temperature Coefficient IK = 100µA ∆Vk/∆Ik Reverse Breakdown Voltage Change with Operating Current Change Ikmin o< Ik < 1mA @ To amb = 25oC -40 C < Tamb < +85 C 0.3 0.7 1 mV 1mA < Ik < 12mA @ Tamb = 25oC -40oC < Tamb < +85oC 2.5 5 7 mV 0.5 2/7 Rka Static Impedance ∆Ik = 45µA to 1mA 0.25 Kvh Long Term Stability IK = 100µA, t = 1000hrs Tamb = 25oC 120 ppm en Wideband Noise IK = 100µA 10Hz < f < 10kHz 200 nV Hz Ω TS821 ELECTRICAL CHARACTERISTICS TS821A (1% Precision) o Tamb = 25 C (unless otherwise specified) Symbol Vk Ikmin Parameter Reverse Breakdown Voltage Test Condition Min. Typ. Max. Unit Ik = 100µA @ Tamb = 25oC 1.213 1.225 1.237 V +12 +24 mV 45 µA o Reverse Breakdown Voltage Tolerance Ik = 100µA @ Tamb = 25 C -40oC < Tamb < +85oC Minimum Operating Current Tamb = 25oC -12 -24 40 -40 C < Tamb < +85 C 50 µA ∆Vref/∆T Average Temperature Coefficient IK = 100µA 150 ppm/oC ∆Vk/∆Ik Reverse Breakdown Voltage Change with Operating Current Change Ikmin < Ik < 1mA @ Tamb = 25 C -40oC < Tamb < +85oC 0.3 0.7 1 mV 1mA < Ik < 12mA @ Tamb = 25oC -40oC < Tamb < +85oC 2.5 5 7 mV 0.5 Ω o o o Rka Static Impedance ∆Ik = 45µA to 1mA 0.25 Kvh Long Term Stability IK = 100µΑ,o t = 1000hrs Tamb = 25 C 120 ppm/kHr en Wideband Noise IK = 100µA 10Hz < f < 10kHz 200 nV/ Hz ELECTRICAL CHARACTERISTICS TS821B (0.5% Precision) o Tamb = 25 C (unless otherwise specified) Symbol Vk Ikmin Parameter Test Condition Typ. Max. 1.219 1.225 1.231 V o -6 -14 +6 +14 mV 45 µA Reverse Breakdown Voltage Ik = 100µA @ Tamb = 25 C Reverse Breakdown Voltage Tolerance Ik = o100µA @ Tamb =o 25 C -40 C < Tamb < +85 C Minimum Operating Current Tamb = 25oC ∆Vref/∆T Average Temperature Coefficient Reverse Breakdown Voltage Change with Operating Current Change 40 Unit -40 C < Tamb < +85 C 50 µA IK = 100µA 120 ppm/oC 0.3 0.7 1 mV 1mA < Ik < 12mA @ Tamb = 25 C -40oC < Tamb < +85oC 2.5 5 7 mV 0.5 o ∆Vk/∆Ik Min. o o Ikmin < Ik < 1mA @ Tamb = 25oC -40oC < Tamb < +85oC o Rka Static Impedance ∆Ik = 45µA to 1mA 0.25 Kvh Long Term Stability IK = 100µA, t = 1000hrs o Tamb = 25 C 120 en Wideband Noise IK = 100µA 10Hz < f < 10kHz 200 Ω ppm nV/ Hz 3/7 TS821 Reference Voltage versus Cathode Current Reference Voltage versus Cathode Current Test Circuit Reference Voltage versus Temperature Dynamic Impedance versus Temperature Noise Voltage versus Frequency 4/7 TS821 Pulse Response for Ik = 100mA Test Circuit for Pulse Response at Ik = 100mA Pulse Response for Ik = 1mA Test Circuit for Pulse Response at Ik = 1mA 5/7 TS821 PACKAGE MECHANICAL DATA 3 PINS - PLASTIC PACKAGE TO92 Dim. Millimeters Min. L 6/7 Typ. Inches Max. Min. 1.27 Typ. Max. 0.05 B 3.2 3.7 4.2 0.126 0.1457 0.1654 O1 4.45 5.00 5.2 0.1752 0.1969 0.2047 C 4.58 5.03 5.33 0.1803 0.198 0.2098 K 12.7 O2 0.407 0.0197 0.02 a 0.35 0.5 0.5 0.508 0.016 0.0138 TS821 PACKAGE MECHANICAL DATA 3 PINS -TINY PACKAGE (SOT23) Dim. Millimeters Min. A 0.890 A1 0.010 A2 0.880 Typ. 0.950 Inches Max. Min. 1.120 0.035 0.100 0.0004 1.020 Typ. Max. 0.044 0.004 0.037 0.040 b 0.300 0.500 0.012 0.020 c 0.080 0.200 0.003 0.008 D 2.800 2.900 3.040 0.110 2.640 0.083 1.300 1.400 0.047 E 2.100 E1 1.200 e 0.950 e1 L L1 k 0.500 0.051 0.055 0.104 0.075 0.600 0.016 0.540 0° 0.120 0.037 1.900 0.400 0.114 0.020 0.024 0.021 8° Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a trademark of STMicroelectronics 2000 STMicroelectronics – Printed in Italy – All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A. http://www.st.com 7/7