TECHNICAL DATA Quad Single Supply Comparator The IL2901 consists of four independent precision voltage comparators with an offset voltage specification as low as 2.0 mV max for four comparators which were designed specifically to operate from a single power supply over a wide range of voltages. Application areas include limit comparators, simple analog to digital converters; pulse, square wave and time delay generators; wide range VCO; MOS clock timers; multivibrators and high voltage digital logic gates. • Single or Split Supply Operation • Low Input Bias Current • Low Input Offset Current • Input Common Mode Voltage Range to Gnd • Low Output Saturation Voltage • TTL and CMOS Compatible IL2901 ORDERING INFORMATION IL2901N Plastic IL2901D SOIC TA = -40° to 85° C for all packages. LOGIC DIAGRAM PIN ASSIGNMENT PIN 3 = VCC PIN 12 = GND 2011, January, ver.02 IL2901 MAXIMUM RATINGS* Symbol VCC Parameter Value Unit 36 ±18 V 36 V V Power Supply Voltages Single Supply Split Supplies VIDR Input Differential Voltage Range VICR Input Common Mode Voltage Range (1) -0.3 to VCC ISC Output Short Circuit to Ground Continuous IIN Input Current, per pin (2) TJ Junction Temperature Plastic Packages Tstg TL Storage Temperature Lead Temperature, 1mm from Case for 10 Seconds 50 mA 150 °C -65 to +150 °C 260 °C PD Power Dissipation @TA=25°C 1.0 W Plastic Package 8.0 mW/°C Derate above 25°C * Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. Functional operation should be restricted to the Recommended Operating Conditions. Notes: 1. Split Power Supplies. 2. VIN<-0.3V. This input current will only exist when voltage at any of the input leads is driven negative. RECOMMENDED OPERATING CONDITIONS Symbol Parameter VCC DC Supply Voltage TA Operating Temperature, All Package Types Min Max Unit ±2.5 or 5.0 ±15 or 30 V -40 +85 °C This device contains protection circuitry to guard against damage due to high static voltages or electric fields. However, precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this high-impedance circuit. For proper operation, VIN and VOUT should be constrained to the range GND≤(VIN or VOUT)≤VCC. Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or VCC). Unused outputs must be left open. 2011, January, ver.02 IL2901 DC ELECTRICAL CHARACTERISTICS (TA=-40 to +85°C) Guaranteed Limit Symbol Parameter VIO Input Offset Voltage Test Conditions Min V0=1.4V VCC=5.0-30V;RS≤100Ω VICR=0V - (VCC-1.5)V - Typ Max Unit 9.0 mV 5.0* IIB Input Bias Current V0=1.4V VCC=5.0-30V VICR=0V - (VCC-1.5)V - 400 nA IIO Input Offset Current V0=1.4V VCC=5.0-30V VICR=0V - (VCC-1.5)V - ±150 nA VICR Input Common Mode Voltage Range VCC=5.0-30V 0 VCC2.0V V ICC Supply Current RL=∞,VCC=5.0 - 2.0* mA RL=∞,VCC=30V - 2.5* Voltage Gain VCC=15V, RL=15KΩ - 200* - V/mV t1 Large Signal Response Time VIN=TTL Logic Swing, Vref=1.4V, VCC=5.0V, RL=5.1KΩ, VRL=5.0V - 300* - ns t2 Response Time VCC=5.0V, RL=5.1KΩ, VRL=5.0V - 1.3* - µs Isink Output Sink Current VI(-)=1.0V, VI(+)=0V, V0≤1.5V, VCC=5.0V 6.0* - - mA Vsat Saturation Voltage VI(-)=1.0V, VI(+)=0V, Isink≤4.0mA, VCC=5.0V - - 700 mV IOL Output Leakage Current VI(+)=1.0V, VI(-)=0V, V0=5.0V V0=30V AVOL VIDR Differential Input Voltage Range All VIN≥GND or V-Supply (if used) nA 0.1* 1000 VCC* V *=@25°C 2011, January, ver.02 IL2901 TYPICAL PERFORMANCE CHARACTERISTICS 2011, January, ver.02 IL2901 APPLICATION NOTE The IL2901 is high gain, wide bandwidth devices which, like most comparators, can easily oscillate if the output lead is inadvertently allowed to capacitively couple to the inputs via stray capacitance. This shows up only during the output voltage transition intervals as the comparator changes states. Power supply bypassing is not required to solve this problem. Standard PC board layout is helpful as it reduces stray input-output coupling. Reducing these input resistors to < 10 kΩ reduces the feedback signal levels and finally, adding even a small amount (1 to 10 mV) of positive feedback (hysteresis) causes such a rapid transition that oscillations due to stray feedback are not possible. Simply socketing the IC and attaching resistors to the pins will cause input-output oscillations during the small transition intervals unless hysteresis is used. If the input signal is a pulse waveform, with relatively fast rise and fall times, hysteresis is not required. All pins of any unused comparators should be tied to the negative supply. The bias network of the IL2901 establishes a drain current which is independent of the magnitude of the power supply voltage over the range of from 2 VDC to 30 VDC. It is usually unnecessary to use a bypass capacitor across the power supply line. The differential input voltage may be larger than V+ without damaging the device. Protection should be provided to prevent the input voltages from going negative more than −0.3 VDC (at 25°C). An input clamp diode can be used as shown in the applications section. TYPICAL APPLICATIONS (V+ = 5.0VDC) 2011, January, ver.02 IL2901 TYPICAL APPLICATIONS (V+ = 5.0VDC) TYPICAL APPLICATIONS (V+ = 15.0VDC) 2011, January, ver.02 IL2901 TYPICAL APPLICATIONS (V+ = 15.0VDC) 2011, January, ver.02 IL2901 TYPICAL APPLICATIONS (V+ = 15.0VDC) 2011, January, ver.02 IL2901 TYPICAL APPLICATIONS (V+ = 15.0VDC) 2011, January, ver.02 IL2901 TYPICAL APPLICATIONS (V+ = 15.0VDC) 2011, January, ver.02 IL2901 SPLIT SUPPLY APPLICATIONS (V+ = 15.0VDC and V- = -15.0VDC) 2011, January, ver.02 IL2901 2011, January, ver.02