19-2045; Rev. 2; 1/07 25ns, Dual/Quad/Single, Low-Power, TTL Comparators The MAX9107/MAX9108/MAX9109 dual/quad/single, high-speed, low-power voltage comparators are designed for use in systems powered from a single +5V supply. Their 25ns propagation delay (with 10mV input overdrive) is achieved with a power consumption of only 1.75mW per comparator. The wide input common-mode range extends from 200mV below ground to within 1.5V of the positive supply rail. The MAX9107/MAX9108/MAX9109 outputs are TTLcompatible, requiring no external pullup circuitry. These easy-to-use comparators incorporate internal hysteresis to ensure clean output switching even when the devices are driven by a slow-moving input signal. The MAX9107/MAX9108/MAX9109 are higher-speed, lower-power, lower-cost upgrades to industry-standard comparators MAX907/MAX908/MAX909. The MAX9109 features an output latch but does not have complementary outputs. Features 25ns Propagation Delay 350A (1.75mW) Supply Current Per Comparator Single 4.5V to 5.5V Supply Operation Wide Input Range Includes Ground Low 500V Offset Voltage Internal Hysteresis Provides Clean Switching (2mV) TTL-Compatible Outputs Internal Latch (MAX9109 only) Space-Saving Packages: 6-Pin SC70 (MAX9109) 8-Pin SOT23 (MAX9107) 14-Pin TSSOP (MAX9108) Ordering Information The dual MAX9107 is available in both 8-pin SO and SOT23 packages. The quad MAX9108 is available in 14-pin TSSOP and SO packages while the single MAX9109 is available in an ultra-small 6-pin SC70 package, a space-saving 6-pin SOT23 package and an 8-pin SO package. Applications Battery-Powered Systems A/D Converters Line Receivers Threshold Detectors/ Discriminators Sampling Circuits Zero-Crossing Detectors PINPACKAGE TOP MARK PKG CODE MAX9107EKA-T 8 SOT23-8 AAIB K8-5 MAX9107ESA 8 SO -- S8-2 MAX9108EUD 14 TSSOP -- U14-1 MAX9108ESD 14 SO -- S14-1 PART MAX9109EXT-T 6 SC70-6 MAX9109EUT-T 6 SOT23-6 MAX9109ESA 8 SO AAU X6S-1 AARU U6-1 -- S8-2 Note: All devices are specified over the -40C to +85C operating temperature range. Pin Configurations TOP VIEW OUTA 1 INA- 2 INA+ GND MAX9107 8 VCC OUTA 1 7 OUTB INA- 2 3 6 INB5 INB+ 4 14 OUTD D A 12 IND+ VCC 4 11 GND MAX9108 SOT23/SO 10 INC+ B MAX9109 6 VCC 13 IND- INA+ 3 INB+ 5 OUT 1 C INB- 6 9 INC- OUTB 7 8 OUTC GND 2 5 LE IN+ 3 4 IN- 8 N.C. VCC 1 IN+ 2 7 OUT IN- 3 6 GND N.C. 4 5 LE MAX9109 SO SC70/SOT23 TSSOP/SO ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com. 1 MAX9107/MAX9108/MAX9109 General Description MAX9107/MAX9108/MAX9109 25ns, Dual/Quad/Single, Low-Power, TTL Comparators ABSOLUTE MAXIMUM RATINGS Power-Supply Ranges Supply Voltage (VCC to GND) ..............................................6V Differential Input Voltage ........................-0.3V to (VCC + 0.3V) Common-Mode Input Voltage to GND ...-0.3V to (VCC + 0.3V) Latch-Enable Input Voltage (MAX9109 only) ...................................-0.3V to (VCC + 0.3V) Current into Input Pins ......................................................20mA Output Short-Circuit Duration to VCC or GND ........................10s Continuous Power Dissipation (TA = +70C) 6-Pin SC70 (derate 3.1mW/C above +70C) ..............245mW 6-Pin SOT23 (derate 8.7mW/C above +70C)696mW 8-Pin SOT23 (derate 9.1mW/C above +70C) .........................727mW 8-Pin SO (derate 5.9mW/C above +70C)..................470mW 14-Pin TSSOP (derate 9.1mW/C above +70C) .........727mW 14-Pin SO (derate 8.33mW/C above +70C)..............666mW Operating Temperature Range ...........................-40C to +85C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10s) .................................+300C 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. ELECTRICAL CHARACTERISTICS (VCC = +5V, VCM = 0, VLE = 0 (MAX9109 only), TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Note 1) PARAMETER Operating Voltage Range Input Offset Voltage Input Hysteresis SYMBOL VCC CONDITIONS Guaranteed by PSRR VOS (Note 2) VHYST (Note 3) MIN TYP 4.5 TA = +25C 0.5 MAX UNITS 5.5 V 1.6 TA = TMIN to TMAX 4.0 2 mV mV Input Bias Current IB 125 350 nA Input Offset Current IOS 25 80 nA Input Voltage Range VCMR VCC - 1.5 V Common-Mode Rejection Ratio CMRR VCC = 5.5V (Note 5) 50 1000 V/V Power-Supply Rejection Ratio PSRR VOH 4.5V VCC 5.5V ISOURCE = 100A 50 1000 V/V Output High Voltage Output Low Voltage VOL Supply Current Per Comparator ICC (Note 4) -0.2 3.0 3.5 ISINK = 3.2mA 0.35 ISINK = 8mA 0.4 VCC = +5.5V, all outputs low 0.35 V 0.6 0.7 V mA Output Rise Time tr VOUT = 0.4V to 2.4V, CL = 10pF 12 ns Output Fall Time tf VOUT = 2.4V to 0.4V, CL = 10pF 6 ns 2 _______________________________________________________________________________________ 25ns, Dual/Quad/Single, Low-Power, TTL Comparators (VCC = +5V, VCM = 0, VLE = 0 (MAX9109 only), TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS tPD+, tPD- VIN = 100mV, VOD = 10mV 25 ns tPD VIN = 100mV, VOD = 10mV (Note 6) 1 ns Propagation Delay Skew tPDskew VIN = 100mV, VOD = 10mV (Note 7) 5 ns Latch Input Voltage High VIH (Note 8) Latch Input Voltage Low VIL (Note 8) IIH, IIL (Note 8) 0.4 Latch Setup Time ts (Note 8) 2 ns Latch Hold Time th (Note 8) 2 ns Propagation Delay Differential Propagation Delay Latch Input Current Note 1: Note 2: Note 3: Note 4: Note 5: Note 6: Note 7: Note 8: 2.0 V 0.8 V 1 A Devices are 100% production tested at TA = +25C. All temperature limits are guaranteed by design. Input Offset Voltage is defined as the center of the input-referred hysteresis zone. Specified for VCM = 0. See Figure 1. Trip Point is defined as the input voltage required to make the comparator output change state. The difference between upper (VTRIP+) and lower (VTRIP-) trip points is equal to the width of the input-referred hysteresis zone (VHYST). Specified for an input common-mode voltage (VCM) of 0. See Figure 1. Inferred from the CMRR test. Note that a correct logic result is obtained at the output, provided that at least one input is within the VCMR limits. Note also that either or both inputs can be driven to the upper or lower absolute maximum limit without damage to the part. Tested over the full-input voltage range (VCMR). Differential Propagation Delay is specified as the difference between any two channels in the MAX9107/MAX9108 (both outputs making either a low-to-high or a high-to-low transition). Propagation Delay Skew is specified as the difference between any single channel's output low-to-high transition (tPD+) and high-to-low transition (tPD-). Latch specifications apply to MAX9109 only. See Figure 2. _______________________________________________________________________________________ 3 MAX9107/MAX9108/MAX9109 ELECTRICAL CHARACTERISTICS (continued) __________________________________________Typical Operating Characteristics (VCC = 5V, VCM = 0, CL = 15pF, TA = +25C, unless otherwise noted.) SUPPLY CURRENT vs. SUPPLY VOLTAGE (OUTPUTS AT VOH) 0.3 0.2 TA = -55C 0.3 TA = +25C 0.2 TA = -55C 0.1 0.1 0 4.5 5.0 5.5 4.5 5.0 5.5 6.0 -60 -40 -20 0 20 40 60 80 100 120 140 INPUT BIAS CURRENT vs. TEMPERATURE TRIP POINT vs. TEMPERATURE 0 -0.1 -0.2 -0.3 -0.5 -25 0 25 50 75 MAX9107/08/09 toc06 VCM = 0 VTRIP+ 1 0 -1 VTRIP- -2 -50 100 2 VOS (mV) 0.1 200 150 100 50 0 -50 -100 -150 -200 -250 -300 -350 -400 MAX9107/08/09 toc05 MAX9107/08/09 toc04 0.2 INPUT CURRENT (nA) INPUT OFFSET VOLTAGE vs. TEMPERATURE -0.4 -25 0 25 50 75 -60 -40 -20 0 100 20 40 60 80 100 120 140 TEMPERATURE (C) TEMPERATURE (C) OUTPUT LOW VOLTAGE vs. SINK CURRENT OUTPUT HIGH VOLTAGE vs. SOURCE CURRENT PROPAGATION DELAY vs. INPUT OVERDRIVE 0.4 4.5 TA = +125C 4.0 VOH (V) TA = +25C 0.3 3.5 TA = +125C 3.0 0.2 TA = +25C 0.1 4 6 ISINK (mA) 8 10 12 RS = 10 CLOAD = 15pF 30 tPD+ 25 20 tPD- 15 TA = -55C 2.5 35 PROPAGATION DELAY (ns) 5.0 MAX9107/08/09 toc07 TA = -55C MAX9107/08/09 toc08 TEMPERATURE (C) 0.5 4 VCMR- TEMPERATURE (C) 0.3 2 1 SUPPLY VOLTAGE (V) 0.4 0 2 SUPPLY VOLTAGE (V) 0.5 -50 3 -1 4.0 6.0 VCMR+ 0 0 4.0 INPUT OFFSET VOLTAGE (mV) MAX9107/08/09 toc02 TA = +125C 4 MAX9107/08/09 toc09 TA = +25C 0.4 5 INPUT VOLTAGE RANGE (V) 0.4 0.5 SUPPLY CURRENT (mA) TA = +125C 0.5 SUPPLY CURRENT (mA) MAX9107/08/09 toc01 0.6 INPUT VOLTAGE RANGE vs. TEMPERATURE MAX9107/08/09 toc03 SUPPLY CURRENT vs. SUPPLY VOLTAGE (OUTPUTS AT VOL) VOL (V) MAX9107/MAX9108/MAX9109 25ns, Dual/Quad/Single, Low-Power, TTL Comparators 10 2.0 1 10 100 ISOURCE (A) 1000 10 100 INPUT OVERDRIVE (mV) ________________________________________________________________________________________________ 25ns, Dual/Quad/Single, Low-Power, TTL Comparators PROPAGATION DELAY (tPD-) INPUT 50mV/div MAX9107/08/09 toc11 MAX9107/08/09 toc10 PROPAGATION DELAY (tPD+) INPUT 50mV/div OVERDRIVE 10mV OVERDRIVE 10mV OUTPUT 1V/div OUTPUT 1V/div 5ns/div SINUSOID 2MHz RESPONSE PROPAGATION DELAY vs. CAPACITIVE LOAD INPUT 50mV/div MAX9107/08/09 toc13 40 VOD = 10mV RS = 10 PROPAGATION DELAY (ns) MAX9107/08/09 toc12 10ns/div 35 tPD+ 30 25 OUTPUT 1V/div tPD20 50ns/div 0 20 40 60 80 100 CAPACITIVE LOAD (pF) PROPAGATION DELAY vs. SOURCE IMPEDANCE 30 tPD+ 20 tPD- 100 MAX9107/08/09 toc15 VOD = 10mV RS = 10 CLOAD = 15pF VOD = 5mV CLOAD = 15pF PROPAGATION DELAY (ns) PROPAGATION DELAY (ns) 40 MAX9107/08/09 toc14 PROPAGATION DELAY vs. TEMPERATURE 80 60 40 tPD+ 20 0 10 -60 -40 -20 0 20 40 60 80 100 120 140 TEMPERATURE (C) 10 100 1k 10k SOURCE IMPEDANCE () _________________________________________________________________________________________________ 5 MAX9107/MAX9108/MAX9109 ____________________________Typical Operating Characteristics (continued) (VCC = 5V, VCM = 0, CL = 15pF, TA = +25C, unless otherwise noted.) MAX9107/MAX9108/MAX9109 25ns, Dual/Quad/Single, Low-Power, TTL Comparators ______________________________________________________________Pin Description PIN MAX9109 MAX9107 NAME SC70/SOT23 SO 1 1 -- -- 2 2 -- -- INA- Channel A Inverting Input 3 3 -- -- INA+ Channel A Noninverting Input OUTA Channel A Output 7 7 -- -- OUTB 6 6 -- -- INB- Channel B Inverting Input 5 5 -- -- INB+ Channel B Noninverting Input Channel B Output -- 8 -- -- OUTC -- 9 -- -- INC- Channel C Inverting Input -- 10 -- -- INC+ Channel C Noninverting Input Channel C Output -- 14 -- -- OUTD -- 13 -- -- IND- Channel D Inverting Input -- 12 -- -- IND+ Channel D Noninverting Input -- -- 1 7 OUT Output -- -- 3 2 IN+ Noninverting Input -- -- 4 3 IN- Inverting Input 8 4 6 1 VCC Positive Supply 4 11 2 6 GND -- -- 5 5 LE -- -- -- 4, 8 N.C. _______________Detailed Description Timing Noise or undesired parasitic AC feedback cause most high-speed comparators to oscillate in the linear region (i.e., when the voltage on one input is at or near the voltage on the other input). The MAX9107/MAX9108/ MAX9109 eliminate this problem by incorporating an internal hysteresis of 2mV. When the two comparator input voltages are equal, 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 that hysteresis be added through the use of external resistors. The MAX9107/MAX9108/MAX9109's fixed internal hysteresis eliminates these resistors. To increase hys- 6 FUNCTION MAX9108 Channel D Output Ground Latch Enable. The latch is transparent when LE is low. No Connection. Not internally connected. teresis and noise margin even more, add positive feedback with two resistors as a voltage divider from the output to the noninverting input. Adding hysteresis to a comparator creates two trip points: one for the input voltage rising and one for the input voltage falling (Figure 1). The difference between these two input-referred trip points is the hysteresis. The average of the trip points is the offset voltage. 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. The MAX9109 includes an internal latch, allowing the result of a comparison to be stored. If LE is low, the latch is transparent (i.e., the comparator operates as though the latch is not present). The state of the comparator output is latched when LE is high (Figure 2). _______________________________________________________________________________________ 25ns, Dual/Quad/Single, Low-Power, TTL Comparators VHYST VTRIP- LATCH 3V VIN+ LE V + VTRIPVOS = TRIP+ 2 MAX9107/MAX9108/MAX9109 VTRIP+ 1.4V 0 COMPARE ts th VIN- = 0 VOD VOS VOH DIFFERENTIAL INPUT VOLTAGE VIN VOH COMPARATOR OUTPUT tPD+ OUTPUT 1.4V VOL VOL Figure 1. Input and Output Waveforms, Noninverting Input Varied Figure 2. MAX9109 Timing Diagram Applications Information Circuit Layout Because of the MAX9107/MAX9108/MAX9109's high gain bandwidth, special precautions must be taken to realize the full high-speed capability. A printed circuit board with a good, low-inductance ground plane is mandatory. Place the decoupling capacitor (a 0.1F ceramic capacitor is a good choice) as close to VCC as possible. Pay close attention to the decoupling capacitor's bandwidth, keeping leads short. Short lead lengths on the inputs and outputs are also essential to avoid unwanted parasitic feedback around the comparators. Solder the device directly to the printed circuit board instead of using a socket. VCLAMP = -200mV TO -300mV 1/2 MAX9107 ISRC V- Figure 3. Schottky Clamp for Input Driven Below Ground 10pF Overdriving the Inputs The inputs to the MAX9107/MAX9108/MAX9109 may be driven beyond the voltage limits given in the Absolute Maximum Ratings, as long as the current flowing into the device is limited to 25mA. However, if the inputs are overdriven, the output may be inverted. The addition of an external diode prevents this inversion by limiting the input voltage to 200mV to 300mV below ground (see Figure 3). 1M +5V +5V 0.1F MAX4400 3 SIEMENS BP-104 PHOTODIODE 1 5 4 6 1 2 4 Battery-Operated Infrared Data Link In Figure 4, the circuit allows reception of infrared data. The MAX4400 converts the photodiode current to a voltage, and the MAX9109 determines whether the amplifier output is high enough to be called a "1." The current consumption of this circuit is minimal: the MAX4400 and MAX9109 require typically 410A and 350A, respectively. 0.1F 3 100k 47k +5V 1000pF 5 DATA 2 100k MAX9109 1000pF Figure 4. Battery-Operated Infrared Data Link Consumes Only 760A _______________________________________________________________________________________ 7 Chip Information MAX9107 TRANSISTOR COUNT: 262 MAX9108 TRANSISTOR COUNT: 536 MAX9109 TRANSISTOR COUNT: 140 PROCESS: Bipolar Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) SOT23, 8L .EPS MAX9107/MAX9108/MAX9109 25ns, Dual/Quad/Single, Low-Power, TTL Comparators 8 _______________________________________________________________________________________ 25ns, Dual/Quad/Single, Low-Power, TTL Comparators TSSOP4.40mm.EPS _______________________________________________________________________________________ 9 MAX9107/MAX9108/MAX9109 Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) SC70, 6L.EPS MAX9107/MAX9108/MAX9109 25ns, Dual/Quad/Single, Low-Power, TTL Comparators PACKAGE OUTLINE, 6L SC70 21-0077 10 ______________________________________________________________________________________ E 1 1 25ns, Dual/Quad/Single, Low-Power, TTL Comparators 6LSOT.EPS ______________________________________________________________________________________ 11 MAX9107/MAX9108/MAX9109 Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) MAX9107/MAX9108/MAX9109 25ns, Dual/Quad/Single, Low-Power, TTL Comparators Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) 12 ______________________________________________________________________________________ 25ns, Dual/Quad/Single, Low-Power, TTL Comparators N E H INCHES MILLIMETERS MAX MIN 0.053 0.069 0.004 0.010 0.014 0.019 0.007 0.010 0.050 BSC 0.150 0.157 0.228 0.244 0.050 0.016 MAX MIN 1.75 1.35 0.25 0.10 0.49 0.35 0.19 0.25 1.27 BSC 3.80 4.00 5.80 6.20 0.40 SOICN .EPS DIM A A1 B C e E H L 1.27 VARIATIONS: 1 INCHES TOP VIEW DIM D D D MIN 0.189 0.337 0.386 MAX 0.197 0.344 0.394 MILLIMETERS MIN 4.80 8.55 9.80 MAX 5.00 8.75 10.00 N MS012 8 AA 14 AB 16 AC D A B e C 0-8 A1 L FRONT VIEW SIDE VIEW PROPRIETARY INFORMATION TITLE: PACKAGE OUTLINE, .150" SOIC APPROVAL DOCUMENT CONTROL NO. 21-0041 REV. B 1 1 Revision History Pages revised at Rev 2: 1, 2, 9-13 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 13 (c) 2007 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc. MAX9107/MAX9108/MAX9109 Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.)