SGM ns, Low-Power, 3V/5V, Rail-to-Rail Input Single-Supply Comparator

Transcription

1 150ns, Low-Power, 3V/5V, Rail-to-Rail GENERAL DESCRIPTION The is a single high-speed comparator optimized for systems powered from a 3V or 5V supply. The device features high-speed response, low-power consumption, and rail-to-rail input range and open drain output. Propagation delay is 150ns, while supply current is only 22µA. The input common mode range of the extends beyond both power supply rails. The output pulls to within 0.1V of either supply rail without external pull-up circuitry, making the device ideal for interface with both CMOS and TTL logics. All input and output pins can tolerate a continuous short-circuit fault condition to either rail. The is available in Green SOT-23-5 and SC70-5 packages. It is rated over the -40 to +85 temperature range. FEATURES Fast, 150ns Propagation Delay (10mV Overdrive) Low Power Consumption: 22μA (TYP) at V S = 3V Wide Supply Voltage Range: 2.7V to 5.5V Optimized for 3V and 5V Applications Open Drain Output Rail-to-Rail Input Voltage Range Low Offset Voltage: 0.8mV (TYP) Output Swing 185mV with 4mA Output Current CMOS/TTL-Compatible Output -40 to +85 Operating Temperature Range Available in Green SOT-23-5 and SC70-5 Packages PIN CONFIGURATIONS (TOP VIEW) APPLICATIONS IN V S Line Receivers Battery-Powered Systems -V S 2 Threshold Detectors/Discriminators 3V/5V Systems Zero-Crossing Detectors IN- 3 4 OUT Sampling Circuits SOT-23-5/SC70-5 REV. A

2 150ns, Low-Power, 3V/5V, Rail-to-Rail PACKAGE/ORDERING INFORMATION MODEL PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE ORDERING NUMBER PACKAGE MARKING PACKING OPTION SC to +85 YC5G/TR SS1XX Tape and Reel, 3000 SOT to +85 YN5G/TR SS2XX Tape and Reel, 3000 NOTE: XX = Date Code. Green (RoHS & HSF): defines "Green" to mean Pb-Free (RoHS compatible) and free of halogen substances. If you have additional comments or questions, please contact your SGMICRO representative directly. 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: SS2FA (2015, January) ABSOLUTE MAXIMUM RATINGS Supply Voltage, +V S to -V S....6V V IN Differential... ±(+V S - (-V S )) Voltage at Input/Output Pins... (-V S ) - 0.3V to (+V S ) + 0.3V Junction Temperature Storage Temperature Range to +150 Lead Temperature (Soldering, 10s) ESD Susceptibility HBM V MM...400V RECOMMENDED OPERATING CONDITIONS Operating Temperature Range to +85 Operating Supply Voltage Range...2.7V to 5.5V OVERSTRESS CAUTION Stresses beyond those listed may cause permanent damage to the device. Functional operation of the device at these or any other conditions beyond those indicated in the operational section of the specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. ESD SENSITIVITY CAUTION 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. DISCLAIMER reserves the right to make any change in circuit design, specification or other related things if necessary without notice at any time. 2

3 ELECTRICAL CHARACTERISTICS (V S = 5V, V CM = 0V, C L = 15pF, typical values are at T A = +25, unless otherwise noted.) 150ns, Low-Power, 3V/5V, Rail-to-Rail PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Operating Supply Voltage Range (1) V S V Input Common Mode Voltage Range (2) V CM -0.1 V S V Input Offset Voltage Output Short-Circuit Current Common Mode Rejection Ratio (3) Power Supply Rejection Ratio Output Voltage Swing from Rail Supply Current Propagation Delay (High to Low) Fall Time V OS I SINK CMRR PSRR V OL I S t FALL V S = 5V, V CM = 0V, Out = 0V to V S = 5V, V CM = 5V, Out = 0V to V S = 5V, Out to V S / to V S = 5V, V CM = 0V to 5V to V CM = 0V, V S = 2.7V to 5.5V to V S = 5V, I O = -4mA to V S = 3V, I O = to V S = 5V, I O = to V S = 3V, Overdrive = 10mV 150 V S = 3V, Overdrive = 100mV 97 Overdrive = 10mV 8 Overdrive = 100mV 6 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. Specified over the full input common mode voltage range (V CM ). mv ma db db mv µa ns ns 3

4 150ns, Low-Power, 3V/5V, Rail-to-Rail TYPICAL PERFORMANCE CHARACTERISTICS 50 Supply Current vs. Temperature 300 Output Low Voltage vs. Temperature Supply Current (μa) V S = 5V V S = 3V Output Low Voltage (mv) V S = 3V V S = 5V I SINK = 4mA Temperature ( ) Temperature ( ) Propagation Delay vs. Input Overdrive V S = 3V, V CM = 0V R L = 10kΩ, C L = 18pF Propagation Delay vs. Capacitive Load V S = 3V, V CM = 0V R L = 10kΩ, V OD = 100mV Propagation Delay (ns) H-L Propagation Delay (ns) H-L Input Overdrive (mv) Capacitive Load (pf) V IN Propagation Delay (H-L) V OD = 10mV, V CM = 0V V IN Propagation Delay (H-L) V OD = 100mV, V CM = 0V 0V 100mV/div 0V 100mV/div V OUT V OUT 1V/div 1V/div 0V 0V Time (50ns/div) Time (25ns/div) 4

5 150ns, Low-Power, 3V/5V, Rail-to-Rail TYPICAL PERFORMANCE CHARACTERISTICS Output Short-Circuit (Sink) Current (ma) Output Short-Circuit (Sink) Current vs. Temperature V S = 3V V S = 5V Temperature ( ) Percentage of Comparators (%) Offset Voltage Production Distribution 5900 Samples 1 Production Lot Offset Voltage (mv) V S = 5V V CM = 0V Percentage of Comparators (%) Offset Voltage Production Distribution 5900 Samples 1 Production Lot V S = 5V V CM = 5V Offset Voltage (mv)

6 DETAILED DESCRIPTION 150ns, Low-Power, 3V/5V, Rail-to-Rail The is a single-supply comparator that features high speed, and low power. Its output is pulled to within 185mV 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 interfaces directly to CMOS and TTL logics. 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. V CC Output Stage Circuitry The contains a open drain current-driven output stage as shown in Figure 1. During an output transition, I SINK is pulled output pin to Logic Low. The output sink current is high during the transition, creating a rapid slew rate. Once the output voltage reaches V OL, the sink current decreases to a small value, capable of maintaining the V OL static condition. This significant decrease in current conserves power after an output transition has occurred. -V S I SINK 4.7kΩ OUTPUT One consequence of a current-driven output stage is a linear dependence between the slew rate and the load Figure 1. Open Drain Output Stage Circuitry 6

7 APPLICATION INFORMATION Circuit Layout and Bypassing The high gain-bandwidth product of the requires design precautions to realize the full high-speed capabilities of the comparator. The recommended precautions are: 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 +V S 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. 150ns, Low-Power, 3V/5V, Rail-to-Rail COAX LINE 10kΩ 20kΩ 20kΩ V S = 3V 4.7kΩ 3V 0 CLEAN DIGITAL SIGNAL Figure 3. Line Receiver Application V DD = 3.3V SERIAL DIGITAL INPUT VREFC SDI 8-BIT DAC V DD 4.7kΩ DACOUTC GND V SS ANALOG IN Figure V Digitally Controlled Threshold Detector 7

8 PACKAGE INFORMATION PACKAGE OUTLINE DIMENSIONS SOT-23-5 D 1.90 e1 E1 E b e RECOMMENDED LAND PATTERN (Unit: mm) L A A1 A2 θ 0.2 c Dimensions In Millimeters Dimensions In Inches Symbol MIN MAX MIN MAX A A A b c D E E e BSC BSC e BSC BSC L θ TX

9 PACKAGE INFORMATION PACKAGE OUTLINE DIMENSIONS SC70-5 D e e E1 E b RECOMMENDED LAND PATTERN (Unit: mm) L L1 A A1 A2 θ 0.20 c Dimensions In Millimeters Dimensions In Inches Symbol MIN MAX MIN MAX A A A b c D E E e 0.65 TYP TYP e BSC BSC L REF REF L θ TX

10 PACKAGE INFORMATION TAPE AND REEL INFORMATION REEL DIMENSIONS TAPE DIMENSIONS P2 P0 W Q1 Q2 Q1 Q2 Q1 Q2 B0 Q3 Q4 Q3 Q4 Q3 Q4 Reel Diameter P1 A0 K0 Reel Width (W1) DIRECTION OF FEED 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 A0 B0 K0 P0 P1 P2 W Pin1 Quadrant SOT Q3 SC Q3 DD0001 TX

11 PACKAGE INFORMATION 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 Width Height Pizza/Carton 7 (Option) DD0002 TX