SGM8740YN5G/TR

SGM8740 45ns, Low-Power, 3V/5V, Rail-to-Rail Input Single-Supply Comparator GENERAL DESCRIPTION FEATURES The SGM8740 is a single high-speed comparator  Fast, 45ns Propagation Delay (10mV Overdrive) optimized for systems powered from a 3V or 5V supply.  Low Power Consumption: The device features high-speed response, low-power 155μA (TYP) at VS = 3V consumption, and rail-to-rail input range. Propagation  Wide Supply Voltage Range: 2.7V to 5.5V delay is 45ns, while supply current is only 155µA.  Optimized for 3V and 5V Applications  Rail-to-Rail Input Voltage Range The input common mode range of the SGM8740 extends  Low Offset Voltage: 0.9mV (TYP) beyond both power supply rails. The output pulls to within  Internal Hysteresis for Clean Switching 0.1V of either supply rail without external pull-up circuitry,  Output Swing to within 200mV from Rails with making the device ideal for interface with both CMOS and TTL logics. All input and output pins can tolerate a 4mA Output Current continuous short-circuit fault condition to either rail.  CMOS/TTL-Compatible Output  -40℃ to +85℃ Operating Temperature Range Internal hysteresis ensures clean output switching, even  Available in Green SOT-23-5 and SC70-5 Packages with slow-moving input signals. The SGM8740 is available in Green SOT-23-5 and SC70-5 packages. It is rated over the -40℃ to +85℃ APPLICATIONS temperature range. Line Receivers Battery-Powered Systems Threshold Detectors/Discriminators 3V/5V Systems Zero-Crossing Detectors Sampling Circuits SG Micro Corp www.sg-micro.com REV. A 45ns, Low-Power, 3V/5V, Rail-to-Rail Input Single-Supply Comparator SGM8740 PACKAGE/ORDERING INFORMATION MODEL SGM8740 PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE ORDERING NUMBER PACKAGE MARKING PACKING OPTION SOT-23-5 -40℃ to +85℃ SGM8740YN5G/TR SL5XX Tape and Reel, 3000 SC70-5 -40℃ to +85℃ SGM8740YC5G/TR SK7XX Tape and Reel, 3000 NOTE: XX = Date Code. MARKING INFORMATION SYY X X Date code - Month ("A" = Jan. "B" = Feb. … "L" = Dec.) Date code - Year ("A" = 2010, "B" = 2011 …) Chip I.D. For example: SL5AA (2010, January) ABSOLUTE MAXIMUM RATINGS CAUTION Supply Voltage, +VS to -VS .................................................... 6V VIN Differential................................................................... ±2.5V Voltage at Input/Output pins ............(-VS) - 0.3V to (+VS) + 0.3V Operating Temperature Range ........................... -40℃ to +85℃ This integrated circuit can be damaged by ESD if you don’t pay attention to ESD protection. SGMICRO recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. Junction Temperature .......................................................150℃ Storage Temperature Range ............................ -65℃ to +150℃ Lead Temperature (Soldering, 10s) ..................................260℃ ESD Susceptibility HBM................................................................................. 6000V MM..................................................................................... 400V NOTE: 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 in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. SGMICRO reserves the right to make any change in circuit design, specification or other related things if necessary without notice at any time. Please contact SGMICRO sales office to get the latest datasheet. PIN CONFIGURATIONS (TOP VIEW) SGM8740 OUT 1 -VS 2 IN+ 3 5 +VS 4 IN- SOT-23-5/SC70-5 SG Micro Corp www.sg-micro.com 2 45ns, Low-Power, 3V/5V, Rail-to-Rail Input Single-Supply Comparator SGM8740 ELECTRICAL CHARACTERISTICS (VS = 5V, VCM = 0V, CL = 15pF, TA = +25℃, unless otherwise noted.) PARAMETER Operating Supply Voltage SYMBOL (1) VS Input Common Mode Voltage Range Input Offset Voltage Input Hysteresis (2) (3) VHYST ISOURCE Output Short-Circuit Current ISINK (5) Power Supply Rejection Ratio CMRR PSRR VOH Output Voltage Swing from Rail VOL IS TYP -0.1 VS = 5V, VCM = 0V 0.9 VS = 5V, VCM = 0V 21 -40℃ ≤ TA ≤ +85℃ 17 VS = 5V, Out to VS/2 60 Propagation Delay (Low to High) Rise Time tRISE Fall Time tFALL VS + 0.1 V 5 mV mV -20 -40℃ ≤ TA ≤ +85℃ 54 VCM = 0V, VS = 2.7V to 5.5V 59 -40℃ ≤ TA ≤ +85℃ 55 78 mA dB 77 198 dB 450 480 -40℃ ≤ TA ≤ +85℃ 180 231 mV 258 -40℃ ≤ TA ≤ +85℃ 155 215 250 -40℃ ≤ TA ≤ +85℃ 164 230 µA 270 -40℃ ≤ TA ≤ +85℃ Propagation Delay (High to Low) V -15 -40℃ ≤ TA ≤ +85℃ VS = 5V, IO = 0 5.5 33 -32 VS = 5V, VCM = 0V to 5V VS = 5V, IO = -4mA UNITS 2.8 VS = 5V, Out to VS/2 VS = 5V, IO = 4mA MAX 5.8 -40℃ ≤ TA ≤ +85℃ VS = 3V, IO = 0 Supply Current MIN 2.7 VCM VOS (4) Common Mode Rejection Ratio CONDITIONS VS = 3V, Overdrive = 10mV 45 VS = 3V, Overdrive = 100mV 20 VS = 3V, Overdrive = 10mV 35 VS = 3V, Overdrive = 100mV 25 VS = 3V, Overdrive = 10mV 9 VS = 3V, Overdrive = 100mV 8 VS = 3V, Overdrive = 10mV 8 VS = 3V, Overdrive = 100mV 5 ns ns ns ns NOTES: 1. Inferred from PSRR test. 2. Inferred from PD test. Note also that either or both inputs can be driven to the absolute maximum limit (0.1V beyond either supply rail) without damage or false output inversion. 3. VOS is defined as the center of the input-referred hysteresis zone. See Figure 1. 4. The input-referred trip points are the extremities of the differential input voltage required to make the comparator output change state. The difference between the upper and lower trip points is equal to the width of the input-referred hysteresis zone. See Figure 1. 5. Specified over the full input common mode voltage range (VCM). SG Micro Corp www.sg-micro.com 3 45ns, Low-Power, 3V/5V, Rail-to-Rail Input Single-Supply Comparator SGM8740 TYPICAL PERFORMANCE CHARACTERISTICS Supply Current vs. Temperature Sinusoid Response at 4MHz 200 VS = 3V VCM = 0V VS = 5V VIN 150 100mV/div VS = 3V 100 50 1V/div Supply Current (μA) 250 VOUT 0 -50 -25 0 25 50 Temperature (℃) 75 100 Time (50ns/div) Output Low Voltage vs. Temperature Output High Voltage vs. Temperature 420 Output High Voltage (mV) Output Low Voltage (mV) 300 VS = 3V 250 200 150 VS = 5V 100 50 ISINK = 4mA 0 VS = 3V 280 210 140 VS = 5V 70 ISOURCE = 4mA 0 -25 0 25 50 Temperature (℃) 75 100 Output Short-Circuit (Sink) Current vs. Temperature 0 VS = 3V -10 -20 -30 -40 VS = 5V -50 -60 -50 -25 0 25 50 Temperature (℃) SG Micro Corp www.sg-micro.com 75 100 -50 Output Short-Circuit (Source) Current (mA) -50 Output Short-Circuit (Sink) Current (mA) 350 -25 0 25 50 Temperature (℃) 75 100 Output Short-Circuit (Source) Current vs. Temperature 60 50 VS = 5V 40 30 20 10 VS = 3V 0 -50 -25 0 25 50 Temperature (℃) 75 100 4 45ns, Low-Power, 3V/5V, Rail-to-Rail Input Single-Supply Comparator SGM8740 TYPICAL PERFORMANCE CHARACTERISTICS Propagation Delay vs. Capacitive Load Propagation Delay vs. Input Overdrive 45 VS = 3V, VCM = 0V 40 Propagation Delay (ns) Propagation Delay (ns) 45 RL = 10kΩ, CL = 18pF 35 30 L-H 25 H-L 20 VS = 3V, VCM = 0V 40 RL = 10kΩ, VOD = 100mV 35 L-H 30 H-L 25 20 15 15 0 40 80 120 160 Input Overdrive (mV) 200 0 Propagation Delay (L-H) 180 100mV/div 0V VIN 1V/div 1V/div VOUT 0V Time (10ns/div) Time (10ns/div) Propagation Delay (H-L) Propagation Delay (H-L) VOD = 10mV, VCM = 0V VOD = 100mV, VCM = 0V VOUT VIN 0V 100mV/div 100mV/div VIN 0V 150 VOD = 100mV, VCM = 0V 100mV/div VOUT 0V 60 90 120 Capacitive Load (pF) Propagation Delay (L-H) VOD = 10mV, VCM = 0V 0V VIN 30 VOUT Time (10ns/div) SG Micro Corp www.sg-micro.com 1V/div 1V/div 0V 0V Time (10ns/div) 5 45ns, Low-Power, 3V/5V, Rail-to-Rail Input Single-Supply Comparator SGM8740 TYPICAL PERFORMANCE CHARACTERISTICS 30 10900 Samples 1 Production Lot 25 20 15 10 5 5.00 4.00 3.00 2.00 1.00 0.00 -1.00 -2.00 -3.00 -4.00 0 -5.00 Percentage of Comparators (%) Offset Voltage Production Distribution 35 Offset Voltage (mV) SG Micro Corp www.sg-micro.com 6 45ns, Low-Power, 3V/5V, Rail-to-Rail Input Single-Supply Comparator SGM8740 DETAILED DESCRIPTION The SGM8740 is a single-supply comparator that features internal hysteresis, high speed, and low power. With 4mA output current, its output is pulled to within 200mV of either supply rail without external pull-up or pull-down circuitry. Rail-to-rail input voltage range and low-voltage single-supply operation make the device ideal for portable equipments. The SGM8740 interfaces directly to CMOS and TTL logics. Most high-speed comparators oscillate in the linear region because of noise or undesired parasitic feedback. This tends to occur when the voltage on one input is at or equal to the voltage on the other input. To counter the parasitic effects and noise, the SGM8740 has an internal hysteresis of 2.8mV. The hysteresis in a comparator creates two trip points: one for the rising input voltage and one for the falling input voltage (Figure 1). The difference between the trip points is the hysteresis. The average of the trip points is the offset voltage. When the comparator’s input voltages are equal, the hysteresis effectively causes one comparator input voltage to move quickly past the other, thus taking the input out of the region where oscillation occurs. Standard comparators require hysteresis to be added with external resistors. The SGM8740’s fixed internal hysteresis eliminates these resistors. To increase hysteresis and noise margin even more, add positive feedback with two resistors as a voltage divider from the output to the non-inverting input. Figure 1 illustrates the case where IN- is fixed and IN+ is varied. If the inputs were reversed, the figure would look the same, except the output would be inverted. Output Stage Circuitry The SGM8740 contains a current-driven output stage as shown in Figure 2. During an output transition, ISOURCE or ISINK is pushed or pulled to the output pin. The output source or sink current is high during the transition, creating a rapid slew rate. Once the output voltage reaches VOH or VOL, the source or sink current decreases to a small value, capable of maintaining the VOH or VOL static condition. This significant decrease in current conserves power after an output transition has occurred. One consequence of a current-driven output stage is a linear dependence between the slew rate and the load capacitance. A heavy capacitive load will slow down a voltage output transition. This can be useful in noise-sensitive applications where fast edges may cause interference. +Vs ISOURCE OUTPUT -VS ISINK VTRIP+ VIN+ VHYST VTRIP+ + VTRIPVOS = 2 VIN- = 0 VTRIP- Figure 2. Output Stage Circuitry COMPARATOR OUTPUT VOH VOL Figure 1. Input and Output Waveform, Non-inverting Input Varied SG Micro Corp www.sg-micro.com 7 45ns, Low-Power, 3V/5V, Rail-to-Rail Input Single-Supply Comparator SGM8740 APPLICATION INFORMATION Circuit Layout and Bypassing The high gain-bandwidth product of the SGM8740 requires design precautions to realize the full high-speed capabilities of the comparator. The recommended precautions are: VS = 3V 10kΩ 1) Use a PCB with a good, unbroken, low-inductance ground plane. 2) Place a decoupling capacitor (a 0.1µF ceramic capacitor is a good choice) as close to +VS as possible. 3) Pay close attention to the decoupling capacitor’s bandwidth, keeping leads short. 4) On the inputs and output, keep lead lengths short to avoid unwanted parasitic feedback around the comparator. 5) Solder the device directly to the PCB instead of using a socket. 3V COAX LINE 20kΩ 20kΩ SGM8740 0 CLEAN DIGITAL SIGNAL Figure 4. Line Receiver Application VDD = 3.3V SERIAL DIGITAL INPUT VREFC VDD SDI 8-BIT DAC DACOUTC GND VSS SGM8740 ANALOG IN Figure 3. 3.3V Digitally Controlled Threshold Detector SG Micro Corp www.sg-micro.com 8 45ns, Low-Power, 3V/5V, Rail-to-Rail Input Single-Supply Comparator SGM8740 PACKAGE OUTLINE DIMENSIONS SOT-23-5 1.90 D e1 E1 2.59 E 0.99 b e 0.95 0.69 RECOMMENDED LAND PATTERN (Unit: mm) L A A1 θ A2 Symbol Dimensions In Millimeters MIN MAX c 0.2 Dimensions In Inches MIN MAX A 1.050 1.250 0.041 0.049 A1 0.000 0.100 0.000 0.004 A2 1.050 1.150 0.041 0.045 b 0.300 0.500 0.012 0.020 c 0.100 0.200 0.004 0.008 D 2.820 3.020 0.111 0.119 E 1.500 1.700 0.059 0.067 E1 2.650 2.950 0.104 0.116 e 0.950 BSC e1 0.037 BSC 1.900 BSC 0.075 BSC L 0.300 0.600 0.012 0.024 θ 0° 8° 0° 8° SG Micro Corp www.sg-micro.com 9 45ns, Low-Power, 3V/5V, Rail-to-Rail Input Single-Supply Comparator SGM8740 PACKAGE OUTLINE DIMENSIONS SC70-5 D e1 0.65 e E1 1.9 E 0.75 b 0.4 1.3 RECOMMENDED LAND PATTERN (Unit: mm) L L1 A θ A1 c 0.20 A2 Symbol Dimensions In Millimeters MIN MAX Dimensions In Inches MIN MAX A 0.900 1.100 0.035 0.043 A1 0.000 0.100 0.000 0.004 A2 0.900 1.000 0.035 0.039 b 0.150 0.350 0.006 0.014 c 0.080 0.150 0.003 0.006 D 2.000 2.200 0.079 0.087 E 1.150 1.350 0.045 0.053 E1 2.150 2.450 0.085 0.096 e 0.65 TYP 0.026 TYP e1 1.300 BSC 0.051 BSC L 0.525 REF 0.021 REF L1 0.260 0.460 0.010 0.018 θ 0° 8° 0° 8° SG Micro Corp www.sg-micro.com 10 45ns, Low-Power, 3V/5V, Rail-to-Rail Input Single-Supply Comparator SGM8740 TAPE AND REEL INFORMATION REEL DIMENSIONS TAPE DIMENSIONS P2 W P0 Q1 Q2 Q1 Q2 Q1 Q2 Q3 Q4 Q3 Q4 Q3 Q4 B0 Reel Diameter P1 A0 K0 DIRECTION OF FEED Reel Width (W1) NOTE: The picture is only for reference. Please make the object as the standard. KEY PARAMETER LIST OF TAPE AND REEL Package Type Reel Diameter Reel Width W1 (mm) A0 (mm) B0 (mm) K0 (mm) P0 (mm) P1 (mm) P2 (mm) W (mm) Pin1 Quadrant SOT-23-5 7″ 9.5 3.2 3.2 1.4 4.0 4.0 2.0 8.0 Q3 SC70-5 7″ 9.5 2.25 2.55 1.20 4.0 4.0 2.0 8.0 Q3 SG Micro Corp www.sg-micro.com 11 45ns, Low-Power, 3V/5V, Rail-to-Rail Input Single-Supply Comparator SGM8740 CARTON BOX DIMENSIONS NOTE: The picture is only for reference. Please make the object as the standard. KEY PARAMETER LIST OF CARTON BOX Reel Type Length (mm) Width (mm) Height (mm) Pizza/Carton 7” (Option) 368 227 224 8 7” 442 410 224 18 SG Micro Corp www.sg-micro.com 12