TS391 Low Power Single Voltage Comparator ■ Wide single supply voltage range or dual supplies +2V to +34V or ±1V to ±17V ■ Very low supply current (0.2mA) independent of supply voltage (1mW/comparator at +5V) ■ Low input bias current: 25nA typ. ■ Low input offset current: ±5nA typ. ■ Low input offset voltage: ±1mV typ. ■ Input common-mode voltage range includes ground ■ Low output saturation voltage: 250mV typ. (Io=4mA) ■ Differential input voltage range equal to the supply voltage ■ L SOT23-5 (Plastic Package) Pin connections (top view) Output 1 V CC 2 Inverting input 3 5 VCC+ TTL, DTL, ECL, CMOS compatible outputs 4 Non-inverting input Description These devices consist of a low power voltage comparator designed specifically to operate from a single supply over a wide range of voltages. Operation from split power supplies is also possible. This comparator also has a unique characteristic in that the input common-mode voltage range includes ground even though operated from a single power supply voltage. Order Codes Part Number Temperature Range Package Packaging -40°C, +125°C SOT23-5L Tape & Reel TS391ILT K511 TS391IYLT January 2006 Marking K510 Rev. 2 1/7 www.st.com 7 Typical Application Schematic TS391 1 Typical Application Schematic Figure 1. Typical application schematic VCC 3.5µA 100µA 3.5µA 100µA Non-inverting Input VCC VCC VO Inverting Input VCC 2/7 TS391 Absolute Maximum Ratings 2 Absolute Maximum Ratings Table 1. Key parameters and their absolute maximum ratings Symbol Parameter VCC Supply Voltage Vid Differential Input Voltage Vi Input Voltage Output Short-circuit to Ground Pd Tstg Power Dissipation (1) (2) Storage Temperature Range Value Unit ±18 or 34 V -±34 V -0.3 to +34 V Infinite 500 mW -65 to +150 °C + 1. Short-circuits from the output to VCC can cause excessive heating and eventual destruction. The maximum output current is approximately 20mA independent of the magnitude of VCC +. 2. Tj = 150°C, Tamb = 25°C with Rthja = 250°C/W for SOT23-5 package. Table 2. Operation conditions Symbol Parameter VCC Supply Voltage Vicm Input Common Mode Voltage Range Toper Operating Free Air Temperature Range Value Unit 2 to 34 ±1 to ±17 V 0 to VCC+ -1.5 V -40 to +125 °C 3/7 Electrical Characteristics TS391 3 Electrical Characteristics Table 3. VCC+ = +5V, VCC- = 0V, Tamb = 25°C (unless otherwise specified) Symbol Parameter Vio Input Offset Voltage (1) Iio Input Offset Current Iib Input Bias Current (2) Avd Large Signal Voltage Gain ICC Vicm Supply Current Input Common Mode Voltage Range (3) Conditions Min. Typ. Max. Unit 1 5 9 mV 5 50 150 nA 25 250 400 nA Tmin. ≤ Tamb ≤ Tmax. Tmin. ≤ Tamb ≤ Tmax. Tmin. ≤ Tamb ≤ Tmax. VCC = 15V, RL = 15kΩ, Vo = 1 to 11V 50 VCC = 5V, no load VCC = 30V, no load Tmin. ≤ Tamb ≤ Tmax. 200 0.2 0.5 0 0 V/mV 0.5 1.25 mA VCC+ -1.5 VCC + -2 V VCC+ V Vid Differential Input Voltage (4) Isink Output Sink Current Vid = -1V, VO = 1.5V VOL Low Level Output Voltage Vid = 1V, VCC = VO = 30V Tmin. ≤ Tamb ≤ Tmax. 250 IOH High Level Output Current Vid = 1V, VCC = VO = 30V Tmin. ≤ Tamb ≤ Tmax. 0.1 tre Small Signal Response Time RL = 5.1kΩ to VCC+ (5) 1.3 µs trel Large Signal Response Time Vi = TTL, Vref = +1.4V, RL = 5.1kΩ to VCC+ 300 ns 6 16 mA 400 700 1 mV nA µA 1. At output switch point, VO ≈ 1.4V, RS = 0Ω with VCC+ from 5V to 30V and over the full input common-mode range (0V to VCC -1.5V). 2. The direction of the input current is out of the IC due to the PNP input stage. This current is essentially constant, independent of the state of the output, so no loading charge exists on the reference or input lines. 3. The input common-mode voltage of either input signal voltage should not be allowed to go negative by more than 0.3V. The upper end of the common-mode voltage range is VCC+ –1.5V, but either or both inputs can go to +30V without damage. 4. Positive excursions of input voltage may exceed the power supply level. As long as the other voltage remains within the common-mode range the comparator will provide a proper output state. The low input voltage state must not be less than – 0.3V (or 0.3V below the negative power supply, if used). 5. The response time specified is for a 100mV input step with 5mV overdrive. For larger overdrive signals 300ns can be obtained. 4/7 TS391 Electrical Characteristics Supply current vs. supply voltage Figure 3. INPUT VOLTAGE (mV) OUTPUT VOLTAGE (V) Figure 2. 80 INPUT CURRENT (nA) Vi = 0V 9 R i = 10 Ω 60 Tamb = +25˚C 20 Tamb = +125˚C Tamb = +70˚C 0 10 20 30 SUPPLY VOLTAGE (V) Figure 6. 10 SATURATION VOLTAGE (V) Tamb = -55˚C Tamb = 0˚C 40 Input overdrive : 5mV 40 5V 5.1kΩ 20mV eI eo 100mV Tamb = +25˚C 0 Figure 5. OUTPUT VOLTAGE (V) Input current vs. supply voltage INPUT VOLTAGE (mV) Figure 4. 6 5 4 3 2 1 0 0 -50 -100 Response time for various input overdrives - negative transition 0.5 1 1.5 TIME (µs) 2 Response time for various input overdrives - positive transition 6 Input overdrive : 100mV 5 4 5mV 3 2 20mV 1 0 100 Tamb = +25˚C 50 0 0 0.5 1 1.5 TIME (µs) 5V 5.1k Ω eI eo 2 Output saturation voltage vs. output current 1 Out of saturation 10 0 Tamb = +125˚C 10 -1 Tamb = -55˚C 10 10 -2 Tamb = +25˚C -3 10 -2 10 -1 10 0 10 1 10 2 OUTPUT SINK CURRENT (mA) 5/7 Package Mechanical Data 4 TS391 Package Mechanical Data In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com. SOT23-5L Package SOT23-5L MECHANICAL DATA mm. mils DIM. MIN. MAX. MIN. TYP. MAX. A 0.90 1.45 35.4 57.1 A1 0.00 0.15 0.0 5.9 A2 0.90 1.30 35.4 51.2 b 0.35 0.50 13.7 19.7 C 0.09 0.20 3.5 7.8 D 2.80 3.00 110.2 118.1 E 2.60 3.00 102.3 118.1 E1 1.50 1.75 59.0 68.8 e 0 .95 37.4 e1 1.9 74.8 L 6/7 TYP 0.35 0.55 13.7 21.6 TS391 5 Revision history Revision history Table 4. Document revision history Date Revision Changes Sept. 2004 1 Initial release. Jan. 2006 2 PPAP reference inserted in the document. 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 registered trademark of STMicroelectronics. All other names are the property of their respective owners © 2006 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com 7/7