Data Sheet A m p l i fy t h e H u m a n E x p e r i e n c e Comlinear CLC2550, CLC4550 ® Low Power, Low Offset, 2V to 36V Comparators The COMLINEAR CLC2550 (dual) and CLC4550 (quad) are precision voltage comparators with a typical offset of 2mV and high gain (200V/mV). These comparators also offer an input common-mode voltage range that includes ground. The COMLINEAR CLC2550, and CLC4550 operate from a wide supply voltage range of ±1V to ±18V, or from a single supply range of 2V to 36V. These comparators are available in Pb-free, RoHS compliant SOIC-8 and SOIC-14 packages. They operate over the industrial temperature range of -40°C to +85°C. Typical Application - One Shot Multivibrator VCC 1MΩ APPLICATIONS n Battery charger n Cordless telephone n Switching power supply n DC-DC module n PC motherboard n Communication equipment n Widerange VCO n Squarewave and time delay generators n MOS clock timers n High voltage digital logic gates n Multivibrators 10kΩ 100pF – +VIN 1/4 CLCx550A 1MΩ VOUT + 0.001µF 1MΩ Comlinear CLC2550, CLC4550 Low Power, Low Offset, 2V to 36V Comparators General Description FEATURES n 2mV input offset voltage n 25nA input bias current n ±5nA input offset current n 0.9mA supply current n CMIR includes ground n 200mV output saturation voltage at 4mA n 2V to 36V single supply voltage range n ±1V to ±18V dual supply voltage range n Open collector output n Differential input voltage range equals the power supply voltage n CLC2550: improved replacement for industry standard LM393 n CLC4550: Improved replacement for industry standard LM339 n CLC2550: Pb-free SOIC-8 n CLC4550: Pb-free SOIC-14 Rev 1A Ordering Information Part Number Package Pb-Free RoHS Compliant Operating Temperature Range Packaging Method CLC2550ISO8X SOIC-8 Yes Yes -40°C to +85°C Reel CLC4550ISO14X SOIC-14 Yes Yes -40°C to +85°C Reel Moisture sensitivity level for all parts is MSL-1. ©2007-2009 CADEKA Microcircuits LLC www.cadeka.com Data Sheet CLC2550 Pin Configuration 8 +VS -IN1 2 7 OUT2 +IN1 3 6 -IN2 -V S 4 5 +IN2 Pin No. Pin Name Description 1 OUT1 Output, channel 1 2 -IN1 Negative input, channel 1 3 +IN1 Positive input, channel 1 4 -VS 5 +IN2 Positive input, channel 2 6 -IN2 Negative input, channel 2 7 OUT2 Output, channel 2 8 +VS Comlinear CLC2550, CLC4550 Low Power, Low Offset, 2V to 36V Comparators OUT1 1 CLC2550 Pin Configuration Negative supply Positive supply CLC4550 Pin Configuration CLC4550 Pin Configuration Pin No. Pin Name Description 1 OUT1 Output, channel 1 2 -IN1 Negative input, channel 1 3 +IN1 Positive input, channel 1 4 +VS Positive supply 5 +IN2 Positive input, channel 2 1 14 OUT4 -IN1 2 13 -IN4 +IN1 3 12 +IN4 6 -IN2 Negative input, channel 2 +VS 4 11 -VS 7 OUT2 Output, channel 2 +IN2 5 10 +IN3 8 OUT3 Output, channel 3 9 -IN3 Negative input, channel 3 -IN2 6 9 -IN3 10 +IN3 Positive input, channel 3 7 8 OUT3 11 -VS 12 +IN4 Positive input, channel 4 13 -IN4 Negative input, channel 4 14 OUT4 Output, channel 4 OUT1 OUT2 Negative supply Rev 1A ©2007-2009 CADEKA Microcircuits LLC www.cadeka.com 2 Data Sheet Absolute Maximum Ratings The safety of the device is not guaranteed when it is operated above the “Absolute Maximum Ratings”. The device should not be operated at these “absolute” limits. Adhere to the “Recommended Operating Conditions” for proper device function. The information contained in the Electrical Characteristics tables and Typical Performance plots reflect the operating conditions noted on the tables and plots. Supply Voltage Differential Input Voltage Input Voltage Input Current (VIN < -0.3V) (1) Output Short Circuit Current to Ground Power Dissipation (TA = 25°C) - SOIC-8 Power Dissipation (TA = 25°C) - SOIC-14 Min Max Unit 0 40 40 40 50 V V V mA 660 890 mW mW -0.3 Continuous Notes: 1. This input current will only exist when the voltage at any of the input leads is driven negative. It is due to the collector-base junction of the input PNP transistors becoming forward biased and thereby acting as input diode clamps. In addition to this diode action, there is also lateral NPN parasitic transistor action on the IC chip. This transistor action can cause the output voltages of the comparators to go to the V+ voltage level (or to ground for a large overdrive) for the time duration that an input is driven negative. This is not destructive and normal output states will re-establish when the input voltage, which was negative, again returns to a value greater than -0.3 VDC (at 25°C). Reliability Information Parameter Junction Temperature Storage Temperature Range Lead Temperature (Soldering, 10s) Package Thermal Resistance SOIC-8 SOIC-14 Min Typ -65 Max Unit 150 150 260 °C °C °C 100 88 °C/W °C/W Notes: Package thermal resistance (qJA), JDEC standard, multi-layer test boards, still air. Recommended Operating Conditions Parameter Operating Temperature Range Supply Voltage Range Min -40 2 (±1) Typ Max Unit +85 36 (±18) °C V Comlinear CLC2550, CLC4550 Low Power, Low Offset, 2V to 36V Comparators Parameter Rev 1A ©2007-2009 CADEKA Microcircuits LLC www.cadeka.com 3 Data Sheet Electrical Characteristics TA = 25°C (if bold, TA = -40 to +85°C), Vs = +5V, -Vs = GND unless otherwise noted. Symbol Parameter Conditions Min Typ Max Units 2 5 mV 7 mV 25 250 nA 400 nA DC Performance Input Offset Voltage VOUT = 1.4V, RS = 0Ω, VS = 5V to 30V Ib Input Bias Current VCM = 0V IOS Input Offset Current VCM = 0V CMIR Common Mode Input Range (3) +VS = 30V 0 VG Voltage Gain +VS = 15V, RL = ≥15kΩ, VOUT = 1V to 11V 50 5 Supply Current, CLC2550 0.6 RL = ∞, +VS = 5V IS 1.2 RL = ∞, +VS = 30V Supply Current, CLC4550 0.9 RL = ∞, +VS = 5V nA nA +VS - 1.5 V 200 0.7 RL = ∞, +VS = 30V 50 200 V/mV 1.7 mA 3.0 mA 1.0 mA 2.0 mA 2.5 mA 3.0 mA 2.0 mA 3.0 mA Time Domain Response tRLS Large Signal Response Time tR Response Time VIN = TTL logic swing, VREF = 1.4V, VRL = 5V, RL = 5.1kΩ 200 ns VRL = 5V, RL = 5.1kΩ, 5mV overdrive 1.3 μs VRL = 5V, RL = 5.1kΩ, 10mV overdrive 0.9 μs VRL = 5V, RL = 5.1kΩ, 15mV overdrive 0.8 μs 16 mA Output Characteristics ISINK Output Sink Current ILEAK Output Leakage Current VSAT Saturation Voltage VIN+ = 0V, VIN- = 1V, VOUT = 1.5V VIN+ = 1V, VIN- = 0V, VOUT = 5V 6.0 0.1 VIN+ = 1V, VIN- = 0V, VOUT = 30V VIN+ = 0V, VIN- = 1V, ISINK ≤ 4mA 200 nA 1 μA 400 mV 500 mV Notes: 1. 100% tested at 25°C 2. Limits over the full temperature range are guaranteed by design. 3. The input common mode voltage of either input signal voltage should be kept > 0.3V at 25°C. The upper end of the common-mode voltage range is +VS - 1.5V at 25°C, but either or both inputs can go to +18V without damages, independent of the magnitude of VS. Comlinear CLC2550, CLC4550 Low Power, Low Offset, 2V to 36V Comparators VIO Rev 1A ©2007-2009 CADEKA Microcircuits LLC www.cadeka.com 4 Data Sheet Typical Performance Characteristics TA = 25°C, Vs = +5V, -Vs = GND unless otherwise noted. Supply Current vs. Supply Voltage (CLC2550) 1.6 0.9 1.5 1.4 -40°C Supply Current (mA) 0.7 25°C 0.6 0.5 85°C 0.4 0.3 0.2 1.2 1.1 25°C 1 0.9 85°C 0.8 0.7 0.1 0.6 0 0 4 8 12 16 20 24 28 0.5 32 0 Supply Voltage (V) 4 8 12 20 24 28 32 36 32 36 Supply Voltage vs. Input Bias Current (CLC4550) 80 70 60 Input Bias Current (nA) 70 60 -40°C 50 25°C 40 85°C 30 50 -40°C 40 25°C 30 85°C 20 10 20 0 0 4 8 12 16 20 24 28 32 0 4 8 12 Supply Voltage (V) 20 24 28 Output Sink Current vs. Saturation Voltage (CLC4550) 85°C 25°C 0.01 1 0.1 85°C 25°C Rev 1A Saturation Voltage (V) 1 0.1 16 Supply Voltage (V) Output Sink Current vs. Saturation Voltage (CLC2550) Saturation Voltage (V) 16 Supply Voltage (V) Supply Voltage vs. Input Bias Current (CLC2550) Input Bias Current (nA) -40°C 1.3 0.01 -40°C -40°C 0.001 0.001 0.01 0.1 1 Output Sink Current (mA) ©2007-2009 CADEKA Microcircuits LLC 10 0.01 0.1 Comlinear CLC2550, CLC4550 Low Power, Low Offset, 2V to 36V Comparators 1 0.8 Supply Current (mA) Supply Current vs. Supply Voltage (CLC4550) 1 10 Output Sink Current (mA) www.cadeka.com 5 Data Sheet Typical Performance Characteristics TA = 25°C, Vs = +5V, -Vs = GND unless otherwise noted. Response Time vs. Input Overdrive - Positive (CLC2550) 7 4 Input 0.05 2.5 5mV Overdrive 10mV Overdrive 0 0.4 0.8 1.2 1.6 4 0.05 10mV Overdrive -0.5 0 0.4 0.8 0.05 1.6 2 Response Time vs. Input Overdrive - Negative (CLC4550) 7 0.05 7 Input Input 5.5 10mV Overdrive 20mV Overdrive -0.1 2.5 50mV Overdrive -0.15 1 -0.2 0.8 1.2 1.6 5mV Overdrive -0.05 4 10mV Overdrive 20mV Overdrive -0.1 2.5 50mV Overdrive -0.15 -0.5 0.4 5.5 1 -0.2 2 -0.5 0 0.4 Time (us) 0.8 1.2 1.6 2 Time (us) LS Response Time vs. Input Overdrive - Pos. (CLC2550) LS Response Time vs. Input Overdrive - Pos. (CLC4550) 5.5 5.5 5.5 5.5 4.5 4.5 4.5 4.5 2.5 2.5 2.5 1.5 1.5 0.5 1.5 1.5 0.5 0.5 0.5 -0.5 -0.5 -0.5 0 0.2 0.4 0.6 Time (us) ©2007-2009 CADEKA Microcircuits LLC 0.8 1 3.5 Output -0.5 0 0.2 0.4 0.6 0.8 1 Time (us) www.cadeka.com 6 Rev 1A Input Voltage (V) Output 2.5 Input 3.5 Output Voltage (V) 3.5 Output Voltage (V) Input 3.5 Output Voltage (V) 4 Output Voltage (V) 5mV Overdrive -0.05 0 Input Voltage (V) 0 Input Voltage (V) 1.2 Time (us) Response Time vs. Input Overdrive - Negative (CLC2550) Input Voltage (V) 1 -0.05 2 Time (us) 0 2.5 5mV Overdrive Input 0 -0.5 0 50mV Overdrive 0.1 1 -0.05 5.5 20mV Overdrive Output Voltage (V) 50mV Overdrive 0.1 7 0.15 Input Voltage (V) 5.5 20mV Overdrive Output Voltage (V) Input Voltage (V) 0.15 0.2 Comlinear CLC2550, CLC4550 Low Power, Low Offset, 2V to 36V Comparators 0.2 Response Time vs. Input Overdrive - Positive (CLC4550) Data Sheet Typical Performance Characteristics - Continued TA = 25°C, Vs = +5V, -Vs = GND unless otherwise noted. LS Response Time vs. Input Overdrive - Neg. (CLC4550) 5.5 5.5 5.5 4.5 4.5 4.5 4.5 2.5 2.5 Input 1.5 1.5 0.5 -0.5 0 0.2 0.4 0.6 0.8 Input Voltage (V) 3.5 Output 3.5 3.5 Output 2.5 2.5 Input 1.5 1.5 0.5 0.5 0.5 -0.5 -0.5 1 Output Voltage (V) 3.5 -0.5 0 0.2 0.4 Time (us) 0.6 0.8 1 Time (us) Functional Block Diagram VCC +Input Q2 Q1 Q3 Q4 Output Q8 -Input Q7 Q5 Q6 Comlinear CLC2550, CLC4550 Low Power, Low Offset, 2V to 36V Comparators 5.5 Output Voltage (V) Input Voltage (V) LS Response Time vs. Input Overdrive - Neg. (CLC2550) Rev 1A ©2007-2009 CADEKA Microcircuits LLC www.cadeka.com 7 Data Sheet Application Information All pins of any unused comparators should be tied to the negative supply. The bias network of the CLCx550 series establishes a drain current which is independent of the magnitude of the power supply voltage over the range of 2V DC to 30V DC. 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 −0.3V DC (at 25°C). An input clamp diode can be used as shown in the applications section. ©2007-2009 CADEKA Microcircuits LLC General layout and supply bypassing play major roles in high frequency performance. CADEKA has evaluation boards to use as a guide for high frequency layout and as an aid in device testing and characterization. Follow the steps below as a basis for high frequency layout: • Include 6.8µF and 0.1µF ceramic capacitors for power supply decoupling • Place the 6.8µF capacitor within 0.75 inches of the power pin • Place the 0.1µF capacitor within 0.1 inches of the power pin • Remove the ground plane under and around the part, especially near the input and output pins to reduce parasitic capacitance • Minimize all trace lengths to reduce series inductances Refer to the evaluation board layouts below for more information. Evaluation Board Information The following evaluation boards are available to aid in the testing and layout of these devices: Evaluation Board # CEB006 CEB018 Products CLC2550 CLC4550 Evaluation Board Schematics Evaluation board schematics and layouts are shown in Figures 9-14. These evaluation boards are built for dualsupply operation. Follow these steps to use the board in a single-supply application: 1. Short -Vs to ground. 2. Use C3 and C4, if the -VS pin of the amplifier is not directly connected to the ground plane. www.cadeka.com 8 Rev 1A The output of the CLCx550 series is the uncommitted collector of a grounded-emitter NPN output transistor. Many collectors can be tied together to provide an output OR’ing function. An output pull-up resistor can be connected to any available power supply voltage within the permitted supply voltage range and there is no restriction on this voltage due to the magnitude of the voltage which is applied to the V+ terminal of the CLCx550 package. The output can also be used as a simple SPST switch to ground (when a pull-up resistor is not used). The amount of current which the output device can sink is limited by the drive available (which is independent of V+) and the β of this device. When the maximum current limit is reached (approximately 16 mA), the output transistor will come out of saturation and the output voltage will rise very rapidly. The output saturation voltage is limited by the ap- Layout Considerations Comlinear CLC2550, CLC4550 Low Power, Low Offset, 2V to 36V Comparators The CLCx550 series are 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 this input resistors to < 10kΩ reduces the feedback signal levels and finally, adding even a small amount (1 to 10mV) 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. proximately 60Ω RSAT of the output transistor. The low offset voltage of the output transistor (1 mV) allows the output to clamp essentially to ground level for small load currents. Data Sheet Comlinear CLC2550, CLC4550 Low Power, Low Offset, 2V to 36V Comparators Figure 11. CEB006 Bottom View Figure 9. CEB006 Schematic Figure 10. CEB006 Top View Rev 1A Figure 12. CEB018 Schematic ©2007-2009 CADEKA Microcircuits LLC www.cadeka.com 9 Data Sheet 5V 3 + +VIN 100kΩ VOUT +VREF – Comlinear CLC2550, CLC4550 Low Power, Low Offset, 2V to 36V Comparators 1/4 CLCx550A 12 Figure 16. Driving CMOS VCC Figure 13. CEB018 Top View 1MΩ 10kΩ 100pF – +VIN 1/4 CLCx550A 1MΩ VOUT + 0.001µF 1MΩ Figure 17. One Shot Multivibrator Figure 14. CEB018 Bottom View VCC Typical Applications 4.3kΩ 100kΩ VCC 75pF – 3kΩ +VIN 1/4 CLCx550 + VOUT – VOUT 100kΩ 100kΩ Rev 1A +VREF 1/4 CLCx550A + VIN 100kΩ Figure 15. Basic Comparator Figure 18. Squarewave Oscillator ©2007-2009 CADEKA Microcircuits LLC www.cadeka.com 10 Data Sheet Mechanical Dimensions SOIC-8 Package Comlinear CLC2550, CLC4550 Low Power, Low Offset, 2V to 36V Comparators SOIC-14 Package Rev 1A For additional information regarding our products, please visit CADEKA at: cadeka.com CADEKA Headquarters Loveland, Colorado T: 970.663.5452 T: 877.663.5452 (toll free) CADEKA, the CADEKA logo design, COMLINEAR, the COMLINEAR logo design, and ARCTIC are trademarks or registered trademarks of CADEKA Microcircuits LLC. All other brand and product names may be trademarks of their respective companies. CADEKA reserves the right to make changes to any products and services herein at any time without notice. CADEKA does not assume any responsibility or liability arising out of the application or use of any product or service described herein, except as expressly agreed to in writing by CADEKA; nor does the purchase, lease, or use of a product or service from CADEKA convey a license under any patent rights, copyrights, trademark rights, or any other of the intellectual property rights of CADEKA or of third parties. Copyright ©2007-2009 by CADEKA Microcircuits LLC. All rights reserved. A m p l i fy t h e H u m a n E x p e r i e n c e