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| TS2903 Dual Voltage Comparator Pin assignment: 1. Output 2. Input A (-) 3. Input A (+) 4. Gnd 5. Input B (+) 6. Input B (-) 7. Output B 8. Vcc Preliminary Supply Voltage Range 2V to 36V Dual Channel Comparator General Description The TS2903 is dual independent precision voltage comparators capable of single-supply or split-supply operation. The specifications as low as 2.0 mV make this device an excellent ground level with single-supply operation. Input offset-voltage selection for many applications in consumer automotive, and It is designed to permit a common mode range-to- industrial electronics. The TS2903 is offered in 8 pin SOP-8 and DIP-8 package. Features Output voltage compatible with DTL, ECL, TTL, MOS and CMOS Logic Levels Low input bias current -25nA Low input offset current 5nA Low input offset voltage 3mV(max) Input common mode range to ground level Differential lnput voltage range equal to power supply voltage Very low current drain independent of supply voltage - 0.4mA Wide single-supply range 2V to 36V Split-supply range 1V to 18V Block Diagram Ordering Information Part No. TS2903CD TS2903CS Operating Temp. o -40 ~ +105 C Package DIP-8 SOP-8 Schematic (each comparator) TS2903 1-6 2005/04 rev. A Absolute Maximum Rating Supply Voltage Differential Input Voltage Input Common Mode Voltage Range Input Current (note 2) Output Short Circuit to Ground Output Sink Current (note 1) Power Dissipation @ Ta=25 oC Derate above 25 C Operating Junction Temperature Range Storage Temperature Range Lead Temperature 1.6mm(1/16") from case for 10Sec. o Vcc VIDR VICR Iin Isc Isink +36 or 18 36 -0.3 to 36 50 Continuous 20 570 V V V mA mA mW mW/ oC o o o 1/Rja TJ TSTG TLEAD 5.7 0 ~ +125 -65 ~ +150 260 C C C Electrical Characteristics (VCC = 5V, TLOW Ta THIGH; unless otherwise specified.) Characteristics Input Offset Voltage (note 3) Input Offset Current Input Offset Current (note 4) Input Common Mode Voltage Range (note 5) Voltage Gain Large Signal Response Time Response Time (note 6) Input Differential Voltage (note 7) Output Sink Current Symbol Vio Iio IIB VICR AVOL Test condition Ta =25 C TLOW Ta THIGH o Ta =25 C o Min ------0 0 25 Typ 2.0 9.0 5.0 5.0 25 200 --200 Max 7.0 15 50 200 250 500 VCC-1.5 VCC-2.0 -- Unit mV nA nA V V/mV TLOW Ta THIGH o Ta =25 C TLOW Ta THIGH o Ta =25 C TLOW Ta THIGH RL 15K, Vcc = 15Vdc. Ta =25 oC Vin = TTL Logic Swing. Vref = 1.4Vdc, VRL = 5Vdc. RL 5.1K, Ta =25 C o -- -- 300 -- nS tTLH VID ISINK VRL = 5Vdc, RK = 5.1K Ta =25 oC All Vin Gnd or V-Supply (if used) Vin-1Vdc, Vin+=0Vdc, VO- 1 Vdc, Ta =25 oC Vin- 1Vdc, Vin+=0, ISINK 4mA, Ta =25 oC TLOW Ta THIGH Vin-=0V, Vin+1Vdc, P=5Vdc. Ta =25 oC Vin-=0V, Vin+1V, VO=30Vdc TLOW Ta THIGH --6.0 1.5 -16 -VCC -- uS V mA Output Saturation Voltage VOL ------- -200 0.1 -0.4 -- 400 700 -1000 1.0 2.5 mV Output Leakage Current IOL nA Supply Current Icc RL = , Ta =25 C o RL = , VCC =30 V mA TS2903 2-6 2005/04 rev. A Electrical Characteristics (Continues) Note 1. The max. Output current may be as high as 20mA, independent of the magnitude of VCC, output short circuits to VCC can cause excessive heating and eventual destruction. Note 2. This magnitude of input current will only occur if the input leads are driven more negative than ground or the negative supply voltage. This is due to the input PNP collector base junction becoming forward biased acting as an input clamp diode. There is also a lateral PNP parasitic transistor action on the IC chip. This phenomena can cause the output voltage of the comparators to go to the VCC voltage level (or ground if overdrive is large) during the time the input is driven negative. This will not destroy the device and normal output states will recover when the inputs become -0.3V of ground or negative supply. Note 3. At output switch point, VO=1.4Vdc, RS=0 with VCC from 5Vdc to 30Vdc, and over the full input common-mode Note 4. Due to the PNP transistor inputs, bias current will flow out of the inputs, this current is essentially constant independent of the output state, therefore, no loading changes will exist on the input lines. Note 5. Input common mode of either input should not be permitted to go more than 0.3V negative of ground or minus supply. The upper limit of common mode range is VCC - 1.5V but either or both inputs can betaken to as high as 30volts without damage. Note 6. Response time is specified with a 100mV step and 5.0mV of overdrive. With larger magnitudes of overdrive faster response times are obtainable. Note 7. The comparator will inhibit proper output state if one of the inputs is become greater than VCC, the other input must remain within the common mode range. The low input state must not be less than -0.3volts of ground of minus supply. TS2903 3-6 2005/04 rev. A Applications Information This dual comparator feature high gain, wide bandwidth characteristics. This gives the device oscillation tendencies if the outputs are capacitive coupled to the inputs via stray capacitance. This oscillation manifests itself during output transitions (VOL to VOH). To alleviate this situation input resistors<10K should be used. The addition of positive feedback (<10 mV) is also recommended. It is good design practice to ground all unused pins. Differential input voltages may be larger than supply voltage without damaging the comparator's inputs. Voltages more negative than -0.3V should not be used. TS2903 4-6 2005/04 rev. A Electrical Characteristics Curve TS2903 5-6 2005/04 rev. A SOP-8 Mechanical Drawing A DIM SOP-8 DIMENSION MILLIMETERS INCHES MIN MAX MIN MAX 4.80 5.00 0.189 0.196 3.80 4.00 0.150 0.157 1.35 1.75 0.054 0.068 0.35 0.49 0.014 0.019 0.40 1.25 0.016 0.049 1.27 (typ) 0.05 (typ) 0.10 0.25 0.004 0.009 0o 7o 0o 7o 5.80 6.20 0.229 0.244 0.25 0.50 0.010 0.019 16 9 B P 1 8 G C D K M R F A B C D F G K M P R DIP-8 Mechanical Drawing A SOP-8 DIMENSION MILLIMETERS INCHES MIN MAX MIN MAX 9.07 9.32 0.357 0.367 6.22 6.48 0.245 0.255 3.18 4.45 0.125 0.135 0.35 0.55 0.019 0.020 2.54 (typ) 0.10 (typ) 0.29 0.31 0.011 0.012 3.25 3.35 0.128 0.132 7.75 8.00 0.305 0.315 10o 10o 8 5 DIM B 1 4 L C K G D M J A B C D G J K L M TS2903 6-6 2005/04 rev. A |
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