MIC6270 IttyBitty Comparator General Description Features The MIC6270 is a precision voltage comparator with an 2V to 36V supply offset voltage specification of 5mV maximum. 300A supply current independent of supply 25nA input bias current The MIC6270 is designed to operate from a single 2V to 36V power supply. Operation from split power supplies is 5nA input offset current also possible. Its low supply current drain is independent 3mV input offset voltage of the magnitude of the supply voltage. Input common-mode voltage range includes ground This comparator also features an input common-mode Differential input voltage range equal to the power voltage range that includes ground. Inputs are protected supply voltage against reverse polarity (input voltage less than V) and 250mV at 4mA output saturation voltage ESD. Output compatible with TTL, DTL, ECL, MOS, and CMOS logic The MIC6270 has an open-collector output that directly interfaces with TTL, CMOS, and other types of logic. Applications Several MIC6270 outputs can be connected together for Limit comparators wired-OR logic. The output also features an internal pull- up current source that can be used instead of an external A/D converters load in some applications. Pulse, square wave, time delay generators Wide range VCO Data sheets and support documentation can be found on Micrels web site at www.micrel.com. MOS clock timers Multi-vibrators and high-voltage digital logic gates Ordering Information Part Number Temperature Package Range Standard Pb-Free MIC6270BM5 MIC6270YM5 40 to +85C 5-Pin SOT-23 Pin Configuration Functional Configuration IN+ V OUT IN+ V OUT 3 2 1 3 2 1 Part Identification B10 45 45 IN V+ IN V+ 5-Pin SOT-23 (M5) 5-Pin SOT-23 (M5) Pin Description Pin Number Pin Name Pin Function 1 OUT Comparator Output 2 V Negative Supply: Negative supply for split supply application or ground for single supply application. 3 IN+ Non-inverting Input 4 IN Inverting Input 5 V+ Positive Supply IttyBitty is a registered trademark of Micrel, Inc. Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. MIC6270 (2) Absolute Maximum Ratings Operating Ratings Supply Voltage (V V )............................... 36V or 18V Supply Voltage................................................... 2V to +36V V+ V Differential Input Voltage (V V ). .........................36V Ambient Temperature (T ) ..........................40C to +85C IN+ IN A Input Voltage ................................................. 0.3V to +36V Thermal Resistance Input Current (V <0.3V)...........................................50mA SOT-23-5 ( ).................................................220C/W IN JA Output Short-Circuit to GND, Note 1 ................................. (mounted to printed circuit board) Storage Temperature (T ) .........................65C to +150C s Lead Temperature (soldering, 10sec.)....................... 260C Electrical Characteristics V+ = 5V T = 25C, bold values indicate 40C< T < +85C, T = T unless noted. A A A J Symbol Parameter Condition Min Typ Max Units V Input Offset Voltage Note 2 2 5 mV OS 9 mV I Input Bias Current I or I with output in linear range, 25 250 nA B IN(+) IN() V = 0V, Note 3 400 nA CM I Input Offset Current I I , VCM = 0V 5 50 nA OS IN(+ IN() 150 nA V Input Voltage Range V+ = 30V, Note 4 0 V+ 1.5 V CM V+ 2 V I Supply Current R = 0.3 0.9 mA S L R = , V+ = 36V 0.4 1.2 mA L Voltage Gain R 15k, V+ = 15V 50 200 V/mV L V = 1V to 11V O Large Signal Response Time V = TTL logic swing, V = 1.4V 300 ns IN REF V = 5V, R = 5.1k RL L Response Time V = 5V, R = 5.1k, Note 5 0.6 s RL L Output Sink Current V = 1V, V = 0, V 1.5V 10 20 mA IN() IN(+) O Output Pull-Up Current 15 50 A Saturation Voltage V = 1V, V = 0, I 4mA 250 400 mV IN() IN(+) SINK 700 mV Differential Input Voltage V , V 0V (or V, if used), Note 6 36 V IN(+) IN() General Note: Devices are ESD protected however, handling precautions are recommended. 1. A short circuit from OUT to V+ can cause excessive heating and damage the device. The maximum short circuit output current (OUT to V) is approximately 20mA, independent of V . V+ 2. Measured at the output switch point where V 1.4Vdc with R = 0 , V+ = 5Vdc to 30Vdc, and over the full input common-mode range OUT S (0Vdc to V+ 1.5Vdc). 3. The direction of input current is out of the device due to its PNP input. 4. The input common-mode voltage, V , or V must not go below 0.3V. The upper end of the common-mode voltage range is V+ 1.5V at 25C, IN+ IN but either or both inputs can go to +36Vdc without damage, independent of V . V+ 5. The response time measured using a 100mV input step with 5mV overdrive. With greater overdrive, 300ns can be obtained. See Typical Characteristics. 6. 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 below 0.3Vdc (or 0.3Vdc below V ). V M9999-051608 May 2008 2