PRECISION SHUNT VOLTAGE REFERENCE PRELIMINARY - April 13, 1998 TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com DESCRIPTION The SC4040 is a two terminal precision voltage reference with thermal stability guaranteed over temperature. The SC4040 has a typical dynamic output impedance of 0.25Ω. Active output circuitry provides a very sharp turn on characteristic - the minimum operating current is 60µA, with a maximum of 20mA. Available with five voltage tolerances (0.1%, 0.2%, 0.5%, 1.0% and 2.0%) and three package outlines (SOT-23, SO-8 and TO-92), this part allows the designer the opportunity to select the optimum combination of cost and performance for their application. PIN CONFIGURATIONS SOT-23-3 Lead (Top View) SO-8 Lead (Top View) SC4040 FEATURES • Trimmed bandgap design (0.2%) • Wide operating current range 60µA to 20mA • Low dynamic impedance (0.25Ω) • Available in SOT-23, TO-92 and SO-8 APPLICATIONS • Cellular telephones • Portable computers • Instrumentation • Automotive BLOCK DIAGRAM Cathode Anode SYMBOL DIAGRAM Cathode TO-92 (Top View) Anode 1 © 1998 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320 PRECISION SHUNT VOLTAGE REFERENCE SC4040 PRELIMINARY - April 13, 1998 ABSOLUTE MAXIMUM RATINGS Parameter Symbol Reverse Current Maximum Units 60 µA to 20 mA Operating Temperature Range TA -40 to +85 °C Operating Junction Temperature Range TJ -40 to +150 °C Storage Temperature Range TSTG -65 to +150 °C Lead Temperature (Soldering) 10 seconds TLEAD 260 °C ESD Rating ESD 2 kV ORDERING INFORMATION PACKAGE SOT-23-3L SO-8 (1) TO-92 (1)(2) (1) TOLERANCE T/R Quantity 0.1% 0.2% 0.5% 1.0% 2.0% SC4040ASK SC4040BSK SC4040CSK SC4040DSK SC4040ESK 3K SC4040AS SC4040BS SC4040CS SC4040DS SC4040ES 2.5K SC4040AZ SC4040BZ SC4040CZ SC4040DZ SC4040EZ TR=3K, TA=2K Notes: (1) Add suffix ‘TR’ for Tape & Reel. (2) Add suffix ‘TA’ for Tape Ammo. 2 © 1998 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320 PRECISION SHUNT VOLTAGE REFERENCE SC4040 PRELIMINARY - April 13, 1998 ELECTRICAL CHARACTERISTICS TA = 25°C unless otherwise specified. Parameter Reverse Breakdown Voltage SC4040A (0.1%) Symbol VZ Condition IZ = 100µA MIN TYP MAX SC4040B (0.2%) MIN TYP MAX UNITS TA = 25°C 2.4975 2.5000 2.5025 2.495 2.500 2.505 V TA = -40 to +85°C 2.481 2.479 2.500 2.521 V 60 80 µA ±100 ±100 ppm/°C 2.500 2.519 60 80 Minimum Operating Current IZ(min) Reverse Breakdown Voltage Temperature Coefficient ∆ VZ ∆T IZ = 10mA IZ = 1mA IZ = 100µA TA = -40 to +85°C Ratio of Change in VZ to Change in IZ ∆ VZ ∆ IZ IZ(min) < IZ < 1mA TA = 25°C 0.8 0.8 mV TA = -40 to +85°C 1.0 1.0 mV TA = 25°C 6.0 6.0 mV TA = -40 to +85°C 8.0 8.0 mV 0.8 Ω 1mA < IZ < 12mA Reverse Dynamic Impedance ZR IZ = 1mA, f = 120 Hz, IAC = 0.1 IZ Wideband Noise (RMS) eN IZ = 100µA 10Hz < f < 10kHz Long Term Stability of Reverse Breakdown Voltage ∆V Z 0.25 Parameter Reverse Breakdown Voltage Symbol VZ Condition IZ = 100µA 0.25 35 35 µV 120 120 ppm SC4040C (0.5%) SC4040D (1.0%) t = 1000 hours T = 25°C ± 0.1°C IZ = 100µA TA = 25°C unless otherwise specified. 0.8 MIN TYP MAX MIN TYP MAX UNITS TA = 25°C 2.488 2.500 2.512 2.475 2.500 2.525 V TA = -40 to +85°C 2.471 2.500 2.529 2.451 2.500 2.549 V 60 80 60 80 µA ±100 ±150 ppm/°C Minimum Operating Current IZ(min) Reverse Breakdown Voltage Temperature Coefficient ∆ VZ ∆T IZ = 10mA IZ = 1mA IZ = 100µA TA = -40 to +85°C Ratio of Change in VZ to Change in IZ ∆ VZ ∆ IZ IZ(min) < IZ < 1mA TA = 25°C 0.8 1.0 mV TA = -40 to +85°C 1.0 1.2 mV TA = 25°C 6.0 8.0 mV TA = -40 to +85°C 8.0 10.0 mV 1.1 Ω 1mA < IZ < 12mA Reverse Dynamic Impedance ZR IZ = 1mA, f = 120 Hz, IAC = 0.1 IZ Wideband Noise (RMS) eN IZ = 100µA 10Hz < f < 10kHz ∆VZ t = 1000 hours T = 25°C ± 0.1°C IZ = 100µA Long Term Stability of Reverse Breakdown Voltage 0.25 0.9 0.25 20 35 µV 120 120 ppm 3 © 1998 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320 PRECISION SHUNT VOLTAGE REFERENCE SC4040 PRELIMINARY - April 13, 1998 ELECTRICAL CHARACTERISTICS TA = 25°C unless otherwise specified. Parameter Reverse Breakdown Voltage SC4040E (2.0%) Symbol VZ Condition IZ = 100µA MIN TYP MAX UNITS TA = 25°C 2.450 2.500 2.550 V TA = -40 to +85°C 2.426 2.500 2.574 V 60 80 µA ±150 ppm/°C Minimum Operating Current IZ(min) Reverse Breakdown Voltage Temperature Coefficient ∆ VZ ∆T IZ = 10mA IZ = 1mA IZ = 100µA TA = -40 to +85°C ∆ VZ ∆IZ IZ(min) < IZ < 1mA TA = 25°C 1.0 mV TA = -40 to +85°C 1.2 mV TA = 25°C 8.0 mV TA = -40 to +85°C 10.0 mV 1.1 Ω Ratio of Change in VZ to Change in IZ 1mA < IZ < 12mA Reverse Dynamic Impedance ZR IZ = 1mA, f = 120 Hz, IAC = 0.1 IZ Wideband Noise (RMS) eN IZ = 100µA 10Hz < f < 10kHz ∆VZ t = 1000 hours T = 25°C ± 0.1°C IZ = 100µA Long Term Stability of Reverse Breakdown Voltage 0.25 35 µV 120 ppm 4 © 1998 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320 PRECISION SHUNT VOLTAGE REFERENCE SC4040 PRELIMINARY - April 13, 1998 OUTLINE DRAWING SOT-23 LAND PATTERN SOT-23 Note 1 : Grid placement courtyard is 8 x 8 elements (4mm x 4mm) in accordance with the international grid detailed in IEC Publication 97. 5 © 1998 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320 PRECISION SHUNT VOLTAGE REFERENCE SC4040 PRELIMINARY - April 13, 1998 OUTLINE DRAWING SO-8 LAND PATTERN SO-8 OUTLINE DRAWING TO-92 6 © 1998 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320