MAX9025EBTT

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Technical content

Features

♦ Space-Saving UCSP Package (1mm x 1.52mm) ♦ Ultra-Low Supply Current 0.6µA (MAX9027/MAX9028) 1µA with Reference (MAX9025/MAX9026) ♦ Guaranteed to Operate Down to +1.8V ♦ Internal 1.236V ±1% Reference (MAX9025/MAX9026) ♦ Input Voltage Range Extends 200mV Beyond-the-Rails ♦ CMOS Push-Pull Output with ±5mA Drive Capability (MAX9025/MAX9027) ♦ Open-Drain Output Versions Available (MAX9026/MAX9028) ♦ Crowbar-Current-Free Switching ♦ Internal Hysteresis for Clean Switching ♦ No Phase Reversal for Overdriven Inputs MAX9025–MAX9028 UCSP, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference Typical Application Circuit appears at end of data sheet. Pin Configurations Selector Guide

Ordering Information

Beyond-the-Rails and UCSP are trademarks of Maxim Integrated Products, Inc. 19-3241; Rev 1; 6/11 PART TEMP RANGE BUMP- PACKAGE TOP MARK MAX9025EBT+T -40°C to +85°C 6 UCSP ADB MAX9026EBT+T -40°C to +85°C 6 UCSP ADC MAX9027EBT+T -40°C to +85°C 6 UCSP ADD MAX9028EBT+T -40°C to +85°C 6 UCSP ADE 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. PART INTERNAL REFERENCE OUTPUT TYPE SUPPLY CURRENT (µA) MAX9025 Yes Push-Pull 1.0 MAX9026 Yes Open-Drain 1.0 MAX9027 No Push-Pull 0.6 MAX9028 No Open-Drain 0.6 TOP VIEW (BUMPS ON BOTTOM) UCSP MAX9025– MAX9028 VCC AB OUT VEE IN+ REF (VEE) IN- ( ) MAX9027/MAX9028 PINS +Denotes a lead(Pb)-free/RoHS-compliant package. T = Tape and reel.

MAX9025–MAX9028 UCSP, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference ABSOLUTE MAXIMUM RATINGS ELECTRICAL CHARACTERISTICS—MAX9025/MAX9026 (WITH REF) (VCC = +5V, VEE = 0V, VIN+ = VREF, TA = -40°C to +85°C, unless otherwise noted. Typical values are at T A = +25°C.) (Note 1) 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. Output Voltage Continuous Power Dissipation (T A = +70°C) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage Range VCC Inferred from the PSRR test 1.8 5.5 V VCC = 1.8V 0.8 1.5 TA = +25°C 1.0 1.7Supply Current ICC VCC = 5V TA = TMIN to TMAX 2.2 µA IN+ Voltage Range VIN+ Inferred from output swing test VEE - 0.2 VCC + 0.2 V TA = +25°C 0.3 5Input Offset Voltage VOS (Note 2) TA = TMIN to TMAX 10 mV Input-Referred Hysteresis VHB (Note 3) 4 mV TA = +25°C 0.15 1Input Bias Current IB TA = TMIN to TMAX 2 nA Power-Supply Rejection Ratio PSRR V CC = 1.8V to 5.5V 0.1 1 mV/V TA = +25°C 250 350M AX 9025, V C C = 5V , IS OU R C E = 6m A TA = TMIN to TMAX 450 TA = +25°C 56 200Output Voltage Swing High VCC - VOH M AX 9025, V C C = 1.8V , IS OU RC E = 1m A TA = TMIN to TMAX 300 mV TA = +25°C 250 350V C C = 5V , IS I N K = 6m A TA = TMIN to TMAX 450 TA = +25°C 57 200Output Voltage Swing Low VOL V C C = 1.8V , IS IN K = 1m A TA = TMIN to TMAX 300 mV Output Leakage Current ILEAK MAX9026 only, VO = 5.5V 0.001 1µ A VCC = 5V 35Sourcing, VO = VEE VCC = 1.8V 3 VCC = 5V 33Output Short-Circuit Current ISC Sinking, VO = VCC VCC = 1.8V 3 mA VCC = 1.8V 7High-to-Low Propagation Delay (Note 4) tPD- VCC = 5V 6 µs

MAX9025–MAX9028 UCSP, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference ELECTRICAL CHARACTERISTICS—MAX9027/MAX9028 (WITHOUT REF) (VCC = +5V, VEE = 0V, VCM = 0V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at T A = +25°C.) (Note 1) ELECTRICAL CHARACTERISTICS—MAX9025/MAX9026 (WITH REF) (continued) (VCC = +5V, VEE = 0V, VIN+ = VREF, TA = -40°C to +85°C, unless otherwise noted. Typical values are at T A = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS VCC = 1.8V 11MAX9025 only VCC = 5V 28 VCC = 1.8V 12 Low-to-High Propagation Delay (Note 4) tPD+ MAX9026 only, R PULLUP = 100kΩ VCC = 5V 31 µs Rise Time tRISE MAX9025 only, CL = 15pF 1.6 µs Fall Time tFALL CL = 15pF 0.2 µs Power-Up Time tON 1.2 ms Reference Voltage Temperature Coefficient TCREF 40 ppm/ BW = 10Hz to 100kHz 29Reference Output Voltage Noise EN CREF = 1nF BW = 10Hz to 6kHz 60 µVRMS Reference Line Regulation ∆VREF/ ∆VCC VCC = 1.8V to 5.5V 0.5 mV/V Reference Load Regulation ∆VREF/ ∆IOUT ∆IOUT = 0nA to 100nA 0.03 mV/ nA PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage Range VCC Inferred from the PSRR test 1.8 5.5 V VCC = 1.8V 0.45 0.75 TA = +25°C 0.6 1.0Supply Current ICC VCC = 5V TA = TMIN to TMAX 1.25 µA Input Common-Mode Voltage Range VCM Inferred from the CMRR test VEE - 0.2 VCC + 0.2 V TA = +25°C 0.3 5 Input Offset Voltage VOS -0.2V ≤ VCM ≤ (VCC + 0.2V) (Note 2) TA = TMIN to TMAX 10 mV Input-Referred Hysteresis VHB -0.2V ≤ VCM ≤ (VCC + 0.2V) (Note 3) 4 mV TA = +25°C 0.15 1Input Bias Current IB TA = TMIN to TMAX 2 nA Power-Supply Rejection Ratio PSRR V CC = 1.8V to 5.5V 0.1 1 mV/V Common-Mode Rejection Ratio CMRR (V EE - 0.2V) ≤ VCM ≤ (VCC + 0.2V) 0.5 3 mV/V

MAX9025–MAX9028 UCSP, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference ELECTRICAL CHARACTERISTICS—MAX9027/MAX9028 (WITHOUT REF) (continued) (VCC = +5V, VEE = 0V, VCM = 0V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at T A = +25°C.) (Note 1) Note 1: All specifications are 100% tested at TA = +25°C. Specification limits over temperature (TA = TMIN to TMAX) are guaranteed by design, not production tested. Note 2: VOS is defined as the center of the hysteresis band at the input. Note 3: The hysteresis-related trip points are defined as the edges of the hysteresis band, measured with respect to the center of the band (i.e., VOS) (Figure 2). Note 4: Specified with an input overdrive (VOVERDRIVE) of 100mV, and load capacitance of CL = 15pF. VOVERDRIVE is defined above and beyond the offset voltage and hysteresis of the comparator input. For the MAX9025/MAX9026, reference voltage error should also be added. PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS TA = +25°C 191 400MAX9027 only, VCC = 5V, ISOURCE = 5mA TA = TMIN to TMAX 500 TA = +25°C5 8 200Output Voltage Swing High VCC - VOH MAX9028 only, VCC = 1.8V, ISOURCE = 1mA TA = TMIN to TMAX 300 mV TA = +25°C 191 400VCC = 5V, ISINK = 5mA TA = TMIN to TMAX 500 TA = +25°C5 6 200Output Voltage Swing Low VOL VCC = 1.8V, ISINK = 1mA TA = TMIN to TMAX 300 mV Output Leakage Current ILEAK MAX9028 only, VO = 5.5V 0.001 1µ A VCC = 5V 35Sourcing, VO = VEE VCC = 1.8V 3 VCC = 5V 33Output Short-Circuit Current ISC Sourcing, VO = VCC VCC = 1.8V 3 mA VCC = 1.8V 16High-to-Low Propagation Delay (Note 4) tPD- VCC = 5V 14 µs VCC = 1.8V 15MAX9027 only VCC = 5V 40 VCC = 1.8V, RPULLUP = 100kΩ 16Low-to-High Propagation Delay (Note 4) tPD+ MAX9028 only VCC = 5V, RPULLUP = 100kΩ 45 µs Rise Time tRISE MAX9027 only, CL = 15pF 1.6 µs Fall Time tFALL CL = 15pF 0.2 µs Power-Up Time tON 1.2 ms

SUPPLY CURRENT vs. SUPPLY VOLTAGE MAX9025-28 toc01 SUPPLY VOLTAGE (V) SUPPLY CURRENT (nA) 4.53.52.5 800 1000 1200 600 1.5 5.5 TA = +85°C TA = +25°C TA = -40°C MAX9025-28 toc02 SUPPLY VOLTAGE (V) SUPPLY CURRENT (nA) 4.53.52.5 400 500 600 700 800 300 1.5 5.5 MAX9027/MAX9028 SUPPLY CURRENT vs. SUPPLY VOLTAGE TA = +85°C TA = +25°C TA = -40°C MAX9025-28 toc03 TEMPERATURE (°C) SUPPLY CURRENT (nA) 603510-15 800 1000 1200 600 -40 85 MAX9025/MAX9026 SUPPLY CURRENT vs. TEMPERATURE VCC = 5V VCC = 1.8V VCC = 3V MAX9025-28 toc04 TEMPERATURE (°C) SUPPLY CURRENT (nA) 603510-15 400 500 600 700 800 300 -40 85 VCC = 5V VCC = 3V MAX9027/MAX9028 SUPPLY CURRENT vs. TEMPERATURE VCC = 1.8V OUTPUT VOLTAGE LOW vs. SINK CURRENT MAX9025-28 toc07 SINK CURRENT (mA) OUTPUT VOLTAGE LOW (mV) 8642 200 400 600 800 01 0 VCC = 5V VCC = 3V VCC = 1.8V MAX9025-28 toc05 TRANSITION FREQUENCY (kHz) SUPPLY CURRENT (µA) 101 0.1 100 MAX9025/MAX9026 SUPPLY CURRENT vs. OUTPUT TRANSITION FREQUENCY VCC = 5V VCC = 3V VCC = 1.8V MAX9025-28 toc06 TRANSITION FREQUENCY (kHz) SUPPLY CURRENT (µA) 101 0.1 100 MAX9027/MAX9028 SUPPLY CURRENT vs. OUTPUT TRANSITION FREQUENCY VCC = 5V VCC = 3V VCC = 1.8V OUTPUT VOLTAGE LOW vs. SINK CURRENT MAX9025-28 toc08 SINK CURRENT (mA) OUTPUT VOLTAGE LOW (mV) 8642 200 400 600 800 01 0 TA = +85°C TA = +25°C TA = -40°C MAX9025/MAX9027 OUTPUT VOLTAGE HIGH vs. SOURCE CURRENT MAX9025-28 toc09 SOURCE CURRENT (mA) OUTPUT VOLTAGE HIGH (VCC - VOH, mV) 8642 200 400 600 800 01 0 VCC = 5V VCC = 3VVCC = 1.8V MAX9025–MAX9028 UCSP, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference Typical Operating Characteristics (VCC = +5V, VEE = 0V, CL = 15pF, VOVERDRIVE = 100mV, TA = +25°C, unless otherwise noted.)

Typical Operating Characteristics (continued) (VCC = +5V, VEE = 0V, CL = 15pF, VOVERDRIVE = 100mV, TA = +25°C, unless otherwise noted.) MAX9025–MAX9028 UCSP, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference MAX9025/MAX9027 OUTPUT VOLTAGE HIGH vs. SOURCE CURRENT MAX9025-28 toc10 SOURCE CURRENT (mA) OUTPUT VOLTAGE HIGH (VCC - VOH, mV) 8642 200 400 600 800 01 0 TA = +85°C TA = +25°C TA = -40°C SHORT-CIRCUIT SINK CURRENT vs. TEMPERATURE MAX9025-28 toc11 TEMPERATURE (°C) SHORT-CIRCUIT SINK CURRENT (mA) 603510-15 -40 85 VCC = 5V VCC = 3V VCC = 1.8V VOUT = VCC MAX9025/MAX9027 SHORT-CIRCUIT SOURCE CURRENT vs. TEMPERATURE MAX9025-28 toc12 TEMPERATURE (°C) SHORT-CIRCUIT SINK CURRENT (mA) 603510-15 -40 85 VCC = 5V VCC = 3V VCC = 1.8V VOUT = VEE OFFSET VOLTAGE vs. TEMPERATURE MAX9025-28 toc13 TEMPERATURE (°C) OFFSET VOLTAGE (mV) 603510-15 0.3 0.5 0.8 1.0 -40 85 VCC = 5V VCC = 3V VCC = 1.8V HYSTERESIS VOLTAGE vs. TEMPERATURE MAX9025-28 toc14 TEMPERATURE (°C) HYSTERESIS VOLTAGE (mV) 603510-15 2.5 3.0 3.5 4.0 2.0 -40 85 VCC = 5V VCC = 3VVCC = 1.8V -1.000 -0.600 0.200 -0.200 0.600 1.000 INPUT BIAS CURRENT vs. INPUT BIAS VOLTAGE MAX9025-28 toc15 INPUT BIAS VOLTAGE (IN-) (V) INPUT BIAS CURRENT (IN-) (nA) IN+ = 2.5V MAX9025/MAX9026 REFERENCE VOLTAGE vs. TEMPERATURE MAX9025-28 toc16 TEMPERATURE (°C) REFERENCE VOLTAGE (V) 603510-15 1.2340 1.2350 1.2360 1.2370 1.2330 -40 85 VCC = 5V VCC = 3V VCC = 1.8V MAX9025/MAX9026 REFERENCE VOLTAGE vs. TEMPERATURE MAX9025-28 toc17 TEMPERATURE (°C) REFERENCE VOLTAGE (V) 603510-15 1.233 1.235 1.237 1.239 1.231 -40 85

5 DEVICES

vs. SUPPLY VOLTAGE MAX9025-28 toc18 SUPPLY VOLTAGE (V) REFERENCE VOLTAGE (V) 4.53.52.5 1.235 1.236 1.237 1.238 1.234 1.5 5.5

Typical Operating Characteristics (continued) (VCC = +5V, VEE = 0V, CL = 15pF, VOVERDRIVE = 100mV, TA = +25°C, unless otherwise noted.) MAX9025–MAX9028 UCSP, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference 0.01 1 0.1 10 100 MAX9025/MAX9027 PROPAGATION DELAY (tPD+) vs. CAPACITIVE LOAD MAX9025-28 toc23 CAPACITIVE LOAD (nF) tPD+ (µs) VCC = 5V VCC = 3V VCC = 1.8V 01 0 2 03 04 05 0 PROPAGATION DELAY (tPD-) vs. INPUT OVERDRIVE MAX9025-28 toc24 INPUT OVERDRIVE (mV) tPD- (µs) VCC = 5V VCC = 3V VCC = 1.8V 02 0 10 30 40 50 MAX9025/MAX9027 PROPAGATION DELAY (tPD+) vs. INPUT OVERDRIVE MAX9025-28 toc25 INPUT OVERDRIVE (mV) tPD+ (µs) VCC = 5V VCC = 3V VCC = 1.8V MAX9026/MAX9028 PROPAGATION DELAY (tPD+) vs. PULLUP RESISTANCE MAX9025-28 toc26 PULLUP RESISTANCE (kΩ) tPD+ (µs) 1000100 100 125 150 175 200 10 10000 VCC = 5V VCC = 3V VCC = 1.8V 20µs/div PROPAGATION DELAY (VCC = 5V) +100mV MAX9025 toc27 -100mV OUT 2V/div IN+ MAX9025/MAX9026 REFERENCE VOLTAGE vs. REFERENCE CURRENT MAX9025-28 toc19 REFERENCE CURRENT (nA) REFERENCE VOLTAGE (V) 500-50 1.234 1.236 1.238 1.240 1.232 -100 100 VCC = 5V VCC = 3V VCC = 1.8V PROPAGATION DELAY (tPD-) vs. TEMPERATURE MAX9025-28 toc20 TEMPERATURE (°C) tPD- (µs) 603510-15 -40 85 VCC = 5V VCC = 3V VCC = 1.8V MAX9025/MAX9027 PROPAGATION DELAY (tPD+) vs. TEMPERATURE MAX9025-28 toc21 TEMPERATURE (°C) tPD+ (µs) 603510-15 -40 85 VCC = 5V VCC = 3V VCC = 1.8V 0.01 1 0.1 10 100 PROPAGATION DELAY (tPD-) vs. CAPACITIVE LOAD MAX9025-28 toc22 CAPACITIVE LOAD (nF) tPD- (µs) VCC = 5V VCC = 3V VCC = 1.8V

Typical Operating Characteristics (continued) (VCC = +5V, VEE = 0V, CL = 15pF, VOVERDRIVE = 100mV, TA = +25°C, unless otherwise noted.) MAX9025–MAX9028 UCSP, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference 20µs/div PROPAGATION DELAY (VCC = 1.8V) +100mV MAX9025 toc29 -100mV OUT 1V/div IN+ 200µs/div 1kHz FREQUENCY RESPONSE (VCC = 5V) +100mV MAX9025 toc30 -100mV OUT 2V/div IN+ 20µs/div PROPAGATION DELAY (VCC = 3V) +100mV MAX9025 toc28 -100mV OUT 1V/div IN+ 1ms/div REFERENCE RESPONSE TO SUPPLY VOLTAGE TRANSIENT (CREF = 10nF) REF 200mV/div MAX9025 toc32 VCC 1V/div 1.8V 40µs/div POWER-UP/POWER-DOWN RESPONSE VCC MAX9025 toc33 OUT 2V/div 2V/div 20µs/div 10kHz FREQUENCY RESPONSE (VCC = 1.8V) +100mV MAX9025 toc31 -100mV OUT 1V/div IN+

MAX9025–MAX9028 UCSP, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference Functional Diagrams MAX9025 MAX9026 IN+ OUT VCC VEE IN- REF 1.236V MAX9027 MAX9028 IN+ OUT VCC VEE IN- REF Detailed Description The MAX9025/MAX9026 feature an on-board 1.236V ±1% reference, yet draw an ultra-low supply current of 1.0µA. The MAX9027/MAX9028 (without reference) consume just 0.6µA of supply current. All four devices are guaranteed to operate down to +1.8V. Their com- mon-mode input voltage range extends 200mV beyond-the-rails. Internal hysteresis ensures clean out- put switching, even with slow-moving input signals. Large internal output drivers allow rail-to-rail output swing with up to ±5mA loads. The output stage employs a unique design that mini- mizes supply-current surges while switching, virtually eliminating the supply glitches typical of many other comparators. The MAX9025/MAX9027 have a push-pull output stage that sinks as well as sources current. The MAX9026/MAX9028 have an open-drain output stage that can be pulled beyond V CC to a maximum of 5.5V above V EE. These open-drain versions are ideal for implementing wire-OR output logic functions. Input Stage Circuitry The input common-mode voltage range extends from V EE - 0.2V to V CC + 0.2V. These comparators operate at any differential input voltage within these limits. Input bias current is typically ±0.15nA if the input voltage is between the supply rails. Comparator inputs are pro- tected from overvoltage by internal ESD protection diodes connected to the supply rails. As the input volt- age exceeds the supply rails, these ESD protection diodes become forward biased and begin to conduct. Output Stage Circuitry The MAX9025–MAX9028 contain a unique break- before-make output stage capable of rail-to-rail opera- tion with up to ±5mA loads. Many comparators consume orders of magnitude more current during switching than during steady-state operation. However, with this family of comparators, the supply-current change during an output transition is extremely small. In the Typical Operating Characteristics , the Supply Current vs. Output Transition Frequency graphs show the minimal supply-current increase as the output switching frequency approaches 1kHz. This character- istic reduces the need for power-supply filter capaci- tors to reduce glitches created by comparator switching currents. In battery-powered applications, this characteristic results in a substantial increase in battery life. PIN MAX9025/ MAX9026 MAX9027/ MAX9028 NAME FUNCTION A2 A2 OUT Comparator Output A3 A3, B2 VEE Negative Supply Voltage B1 B1 IN+ Comparator Noninverting Input B2 — REF 1.236V Reference Output A1 A1 VCC Positive Supply Voltage B3 B3 IN- Comparator Inverting Input Pin Description

tion because of noise or undesired parasitic feedback. counter parasitic effects and noise. be the same, except with an inverted output. teresis can be added with external components. power dissipation in the additional circuitry. Figure 1. MAX9025/MAX9026 Voltage Reference Output Table 1. Battery Applications Using MAX9025–MAX9028

UCSP—A Wafer-Level Chip-Scale Package. Figure 4. Zero-Crossing Detector

UCSP, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference MAX9025–MAX9028 6L, UCSP.EPS G 1 121-0097 PACKAGE OUTLINE, 3x2 UCSP

Package Information

For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE PACKAGE CODE OUTLINE NO. LAND PATTERN NO.

6 UCSP B6+1 21-0097 Refer to Application Note 1891

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. 14 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2011 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.

Revision History

0 5/04 Initial release. — 1 6/11 Added information for lead-free versions 1 MAX9025–MAX9028 UCSP, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference