TS391_07

TS391 Low power single voltage comparator Features ■ ■ ■ ■ ■ ■ ■ ■ ■ 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 TTL, DTL, ECL, CMOS compatible outputs Inverting input 3 4 Non-inverting input L SOT23-5 (Plastic package) Pin connections (top view) Output V CC 1 5 + VCC 2 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. November 2007 Rev 3 1/8 www.st.com 8 Schematic diagram TS391 1 Schematic diagram Figure 1. Schematic diagram VCC 3.5μA 100μA 3.5μA 100μA Non-inverting Input VCC Inverting Input VCC VO VCC 2/8 TS391 Absolute maximum ratings and operating conditions 2 Table 1. Symbol VCC Vid Vi Absolute maximum ratings and operating conditions Absolute maximum ratings (AMR) Parameter Supply voltage Differential input voltage Input voltage Output short-circuit to ground(1) Tj Rthja Rthjc Tstg ESD MM: machine model Maximum junction temperature Thermal resistance junction to ambient(2) (2) Value ±18 or 34 -±34 -0.3 to +34 Infinite 150 250 81 -65 to +150 300 Unit V V V °C °C/W °C/W °C V Thermal resistance junction to case Storage temperature range HBM: human body model(3) (4) 200 1. Short-circuits from the output to VCC+ can cause excessive heating and potential destruction. The maximum output current is approximately 20mA independent of the magnitude of VCC+. 2. Short-circuits can cause excessive heating. These values are typical. 3. Human body model: A 100pF capacitor is charged to the specified voltage, then discharged through a 1.5kΩ resistor between two pins of the device. This is done for all couples of connected pin combinations while the other pins are floating. 4. Machine model: A 200pF capacitor is charged to the specified voltage, then discharged directly between two pins of the device with no external series resistor (internal resistor < 5Ω). This is done for all couples of connected pin combinations while the other pins are floating. Table 2. Symbol VCC Operation conditions Parameter Supply voltage Input common mode voltage range (1) Tamb = 25°C Tmin ≤ Tamb ≤ Tmax Operating free air temperature range Value 2 to 34 ±1 to ±17 0 to VCC+ -1.5 0 to VCC+ -2 -40 to +125 Unit V Vicm Toper V °C 1. 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. 3/8 Electrical characteristics TS391 3 Table 3. Symbol Vio Iio Iib Avd ICC Vid Isink VOL IOH tre trel Electrical characteristics VCC+ = +5V, VCC- = 0V, Tamb = 25°C (unless otherwise specified) Parameter Input offset voltage (1) Input offset current Input bias current (2) Large signal voltage gain Supply current Differential input voltage (3) Output sink current Low level output voltage High level output current Small signal response time Large signal response time Vid = -1V, VO = 1.5V Vid = 1V, VCC = VO = 30V Tmin ≤ Tamb ≤ Tmax Vid = 1V, VCC+ = VO = 30V Tmin ≤ Tamb ≤ Tmax RL = 5.1kΩ to VCC+ (4) Vi = TTL, Vref = +1.4V, RL = 5.1kΩ to VCC+ + Test conditions Tmin ≤ Tamb ≤ Tmax Min. Typ. 1 5 Max. 5 9 50 150 250 400 Unit mV nA nA V/mV Tmin ≤ Tamb ≤ Tmax 25 Tmin ≤ Tamb ≤ Tmax , VCC+ = 15V, RL = 15kΩ Vo = 1 to 11V VCC+ = 5V, no load VCC+ = 30V, no load 50 200 0.2 0.5 0.5 1.25 VCC+ mA V mA 6 16 250 0.1 1 1.3 300 400 700 mV nA µA µs ns 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 there is no loading charge on the reference or input lines. 3. 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). 4. The response time specified is for a 100mV input step with 5mV overdrive. For larger overdrive signals, 300ns can be obtained. 4/8 TS391 Electrical characteristics Figure 2. Supply current vs. supply voltage Figure 3. OUTPUT VOLTAGE (V) Response time for various input overdrives - negative transition INPUT VOLTAGE (mV) 6 5 4 3 2 1 0 0 -50 -100 Input overdrive : 5mV 20mV eI 5V 5.1kΩ eo 100mV Tamb = +25˚C 0 0.5 1 1.5 TIME (μs) 2 Figure 4. Input current vs. supply voltage Figure 5. OUTPUT VOLTAGE (V) Response time for various input overdrives - positive transition 80 Vi = 0V INPUT CURRENT (nA) 60 40 20 Tamb = +125˚C Tamb = +70˚C 0 10 20 30 SUPPLY VOLTAGE (V) 40 R i = 10 Ω Tamb = 0˚C Tamb = +25˚C 9 Tamb = -55˚C INPUT VOLTAGE (mV) 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 Figure 6. Output saturation voltage vs. output current 10 SATURATION VOLTAGE (V) 10 10 10 10 1 Out of saturation 0 Tamb = +125˚C -1 Tamb = -55˚C -2 Tamb = +25˚C -3 -2 -1 0 1 2 10 10 10 10 10 OUTPUT SINK CURRENT (mA) 5/8 Package information TS391 4 Package information 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. Figure 7. SOT23-5L package mechanical drawing Table 4. SOT23-5L package mechanical data Dimensions Ref. Min. A A1 A2 b C D E E1 e e1 L 0.35 0.90 0.00 0.90 0.35 0.09 2.80 2.60 1.50 Millimeters Typ. Max. 1.45 0.15 1.30 0.50 0.20 3.00 3.00 1.75 0.95 1.9 0.55 13.7 Min. 35.4 0.00 35.4 13.7 3.5 110.2 102.3 59.0 Mils Typ. Max. 57.1 5.9 51.2 19.7 7.8 118.1 118.1 68.8 37.4 74.8 21.6 6/8 TS391 Ordering information 5 Ordering information Table 5. Order codes Temperature range Package SOT23-5L -40°C, +125°C SOT23-5L (Automotive grade) Tape & reel K510 Packaging Marking K511 Part number TS391ILT TS391IYLT(1) 1. Qualification and characterization according to AEC Q100 and Q003 or equivalent, advanced screening according to AEC Q001 & Q 002 or equivalent are on-going. 6 Revision history Table 6. Date 22-Sep-2004 6-Jan-2006 Document revision history Revision 1 2 Initial release. PPAP reference inserted in the document. Added values for Rthja, Rthjc and ESD in Table 1: Absolute maximum ratings (AMR). Added footnote for automotive grade order code in order codes table. Updated format. Changes 21-Nov-2007 3 7/8 TS391 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. 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