19-6157; Rev 1; 4/12 EVALUATION KIT AVAILABLE MAX44280 1.8V, 50MHz, Low-Offset, Low-Power, Rail-to-Rail I/O Op Amp General Description The MAX44280 offers a unique combination of high speed, precision, low noise, and low-voltage operation making it ideally suited for a large number of signal processing functions such as filtering and amplification of signals in portable and industrial equipment. The amplifier features an input offset of less than 50FV and a high-gain bandwidth product of 50MHz while maintaining a low 1.8V supply rail. The device is internally compensated for gains of 5V/V or greater. The device’s rail-to-rail input/outputs and low noise guarantee maximum dynamic range in demanding applications such as 12- to 16-bit SAR ADC drivers. Unlike traditional rail-to-rail input structures, input crossover distortion is absent due to an optimized input stage with an ultra-quiet charge pump. The MAX44280 includes a fast-power-on shutdown mode for further power savings. The MAX44280 operates from a supply range of 1.8V to 5.5V over the -40NC to +125NC temperature range and can operate down to 1.7V over the 0NC to +70NC temperature range. The MAX44280 is available in a small, 6-pin SC70 package and is also available in a 1mm x 1.5mm thin µDFN (ultra-thin LGA) package. Features S Low 1.8V Supply Rail Over the -40°C to +125°C Range S 1.7V Supply Rail Over the 0°C to +70°C Range S 50MHz Bandwidth S Low 12.7nV/√Hz Input Voltage-Noise Density S Low 1.2fA/√Hz Input Current-Noise Density S Low 50µV (max) VOS at +25°C S 500fA Low Input Bias Current S 750µA Quiescent Current per Amplifier S < 1µA Supply Current in Shutdown S Small, 2mm x 2mm SC70 and 1mm x 1.5mm Thin µDFN Packages S Low 110dB Total Harmonic Distortion S 5V/V Minimum Stable Gain Applications Notebooks 3G/4G Handsets Portable Media Players Portable Medical Instruments Battery-Operated Devices Ordering Information appears at end of data sheet. Analog-to-Digital Converter Buffers Transimpedance Amplifiers General-Purpose Signal Processing Typical Application Circuit +3.3V MAX44280 VSIG 10kI 2.4kI 3.3nF ADC MAX11645 24kI For related parts and recommended products to use with this part, refer to: www.maxim-ic.com/MAX44280.related ����������������������������������������������������������������� Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. MAX44280 1.8V, 50MHz, Low-Offset, Low-Power, Rail-to-Rail I/O Op Amp ABSOLUTE MAXIMUM RATINGS IN+, IN-, OUT..................................(VSS - 0.3V) to (VDD + 0.3V) VDD to VSS................................................................-0.3V to +6V SHDN........................................................................-0.3V to +6V Output to Short-Circuit Ground Duration............................... 10s Continuous Input Current into Any Pin............................. Q20mA Continuous Power Dissipation (TA = +70NC) SC70 (derate 3.1mW/NC above +70NC).......................245mW Thin µDFN (Ultra-Thin LGA) (derate 2.1mW/NC above +70NC)..............................110.2mW Operating Temperature Range......................... -40NC to +125NC Junction Temperature......................................................+150NC Lead Temperature (soldering, 10s).................................+300NC Soldering Temperature (reflow).......................................+260NC 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. PACKAGE THERMAL CHARACTERISTICS (Note 1) SC70 Junction-to-Ambient Thermal Resistance (BJA)..... 326.5NC/W Junction-to-Case Thermal Resistance (BJC)..............115NC/W Thin µDFN (Ultra-Thin LGA) Junction-to-Ambient Thermal Resistance (BJA)........ 470NC/W Junction-to-Case Thermal Resistance (BJC)............. 120NC/W Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a fourlayer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial. ELECTRICAL CHARACTERISTICS (VDD = 3.3V, VSS = 0V, VIN+ = VIN- = VDD/2, RL = 10kI to VDD/2, VSHDN = VDD, TA = -40NC to +125NC. Typical values are at TA = +25NC, unless otherwise noted.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS VDD + 0.1 V DC CHARACTERISTICS Input Voltage Range VIN+ VIN- Guaranteed by CMRR test -0.1 10 TA = +25NC Input Offset Voltage VOS 100 TA = -40°C to +125°C after calibration VOS - TC TA = +25NC Input Bias Current Input Capacitance Common-Mode Rejection Ratio Open-Loop Gain IB AOL Output Short-Circuit Current ISC 0.8 5 0.01 0.5 TA = -40NC to +85NC 10 TA = -40NC to +125NC 100 CIN CMRR FV 500 TA = -40°C to +125°C Input Offset Voltage Drift 50 FV/NC pA 0.4 pF VCM = -0.1V to (VDD + 0.1V) 75 90 dB 0.4V P VOUT P VDD - 0.4V, ROUT = 10kI 100 115 0.4V P VOUT P VDD - 0.4V, ROUT = 600I 91 100 0.4V P VOUT P VDD - 0.4V, ROUT = 32I 80 To VDD or VSS 85 dB mA ����������������������������������������������������������������� Maxim Integrated Products 2 MAX44280 1.8V, 50MHz, Low-Offset, Low-Power, Rail-to-Rail I/O Op Amp ELECTRICAL CHARACTERISTICS (continued) (VDD = 3.3V, VSS = 0V, VIN+ = VIN- = VDD/2, RL = 10kI to VDD/2, VSHDN = VDD, TA = -40NC to +125NC. Typical values are at TA = +25NC, unless otherwise noted.) (Note 2) PARAMETER SYMBOL VOL VSS Output Voltage Swing VDD VOH CONDITIONS MIN TYP MAX UNITS 20 ROUT = 10kI 50 ROUT = 600I 400 ROUT = 32I 700 10 ROUT = 10kI mV 40 ROUT = 600I ROUT = 32I 400 800 AC CHARACTERISTICS Input Voltage-Noise Density en f = 10kHz 12.7 nV/√Hz Input Current-Noise Density in f = 10kHz 1.2 fA/√Hz GBWP 50 MHz AMIN 5 V/V Gain-Bandwidth Product Minimum Stable Gain Slew Rate SR Settling Time Capacitive Load CLOAD Total Harmonic Distortion THD 30 V/Fs VOUT = 2VP-P, VDD = 3.3V, AV = 5V/V, CL = 30pF (load), settle to 0.01% 0.6 µs No sustained oscillation, 5V/V 80 No sustained oscillation, 10V/V 500 f = 10kHz, VO = 2VP-P, AV = 5V/V, ROUT = 10kI -110 dB 1 µs DVOUT = 0.2V, VDD = 3.3V, AV = 5V/V; RS = 20Ω, CL = 1nF (load) Output Transient Recovery Time pF POWER-SUPPLY CHARACTERISTICS Power-Supply Range Power-Supply Rejection Ratio Quiescent Current VDD PSRR Guaranteed by PSRR 1.8 5.5 TA = 0NC to +70NC 1.7 5.5 VCM = VDD/2 82 1200 µA 1 µA Shutdown Input Low VIL 0.7 V Shutdown Input High VIH Output Leakage Current in Shutdown ISHDN 750 dB ISHDN Shutdown Supply Current IDD 95 V 1.3 V 100 pA Shutdown Input Bias Current IIL/IIH Shutdown Turn-On Time tSHDN 15 µs tON 10 ms Turn-On Time 1 µA Note 2: All devices are 100% production tested at TA = +25NC. Temperature limits are guaranteed by design. ����������������������������������������������������������������� Maxim Integrated Products 3 MAX44280 1.8V, 50MHz, Low-Offset, Low-Power, Rail-to-Rail I/O Op Amp Typical Operating Characteristics (VDD = 3.3V, VSS = 0V, VIN+ = VIN- = VDD/2, RL = 10kI to VDD/2, VSHDN = VDD, TA = -40NC to +125NC. Typical values are at TA = +25NC, unless otherwise noted. All devices are 100% production tested at TA = +25NC. Temperature limits are guaranteed by design.) INPUT OFFSET VOLTAGE vs. SUPPLY VOLTAGE 20 TA = -40°C 0 -20 TA = +25°C 0 0.5 1.0 1.5 2.0 2.5 20 TA = +25°C 0 -20 -40 TA = +125°C -60 MAX44280 toc03 15 10 5 -100 3.5 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 0 5.5 -15 -10 -5 0 5 10 15 20 SUPPLY VOLTAGE (V) INPUT OFFSET VOLTAGE (µV) INPUT OFFSET DRIFT HISTOGRAM INPUT BIAS CURRENT vs. COMMON-MODE VOLTAGE OUTPUT VOLTAGE LOW vs. OUTPUT SINK CURRENT (VOL - VEE, VCC = 1.8V) 12 10 8 6 4 80 60 40 TA = +25°C 20 0 -20 TA = -40°C -40 -60 2 -80 0 -100 -1.5 -1 -0.5 0 0.50 1.00 -1.8 -1.3 -0.8 -0.3 0.25 0.75 1.25 INPUT OFFSET DRIFT (µV/°C) TA = +85°C TA = +125°C 200 25 MAX44280 toc06 14 100 180 OUTPUT VOLTAGE LOW (mV) MAX44280 toc04 16 -2 20 COMMON-MODE VOLTAGE (V) 18 PERCENT OCCURRENCE (%) 3.0 INPUT BIAS CURRENT (pA) -0.5 40 25 -80 TA = +125°C -60 TA = -40°C 60 MAX44280 toc05 -40 80 MAX44280 toc02 40 INPUT VOS HISTOGRAM 100 INPUT OFFSET VOLTAGE (µV) MAX44280 toc01 INPUT OFFSET VOLTAGE (µV) 60 PERCENT OCCURRENCE (%) INPUT OFFSET VOLTAGE vs. COMMON-MODE VOLTAGE 160 140 120 TA = +25°C 100 80 TA = +125°C 60 TA = -40°C 40 20 0 -0.5 0 0.5 1.0 1.5 2.0 2.5 COMMON-MODE VOLTAGE (V) 3.0 3.5 0.1 1 10 OUTPUT SINK CURRENT (mA) 100 ����������������������������������������������������������������� Maxim Integrated Products 4 MAX44280 1.8V, 50MHz, Low-Offset, Low-Power, Rail-to-Rail I/O Op Amp Typical Operating Characteristics (continued) (VDD = 3.3V, VSS = 0V, VIN+ = VIN- = VDD/2, RL = 10kI to VDD/2, VSHDN = VDD, TA = -40NC to +125NC. Typical values are at TA = +25NC, unless otherwise noted. All devices are 100% production tested at TA = +25NC. Temperature limits are guaranteed by design.) OUTPUT VOLTAGE LOW vs. OUTPUT SINK CURRENT (VOL - VEE, VCC = 5V) TA = +25°C 120 100 80 TA = +125°C 60 40 20 1 10 OUTPUT SINK CURRENT (mA) 140 TA = +25°C 120 100 80 TA = +125°C 60 40 20 TA = -40°C 0 0.1 140 TA = +25°C 120 100 80 TA = +125°C 60 TA = -40°C 40 20 1 10 OUTPUT SINK CURRENT (mA) 1 10 OUTPUT SOURCE CURRENT (mA) 80 100 TA = +125°C 60 TA = -40°C 40 0.1 180 160 140 SUPPLY CURRENT vs. SUPPLY VOLTAGE TA = +25°C 120 100 80 TA = +125°C 60 TA = -40°C 40 0.1 1 10 OUTPUT SOURCE CURRENT (mA) 100 1 10 OUTPUT SOURCE CURRENT (mA) 900 MAX44280 toc11 200 850 TA = +25°C 800 TA = +125°C 750 700 TA = -40°C 650 0 0.1 100 100 20 0 TA = +25°C 120 0 0.1 OUTPUT VOLTAGE HIGH (mV) 160 140 OUTPUT VOLTAGE HIGH vs. OUTPUT SOURCE CURRENT (VCC - VOH, VCC = 5V) MAX44280 toc10 OUTPUT VOLTAGE HIGH (mV) 180 160 20 TA = -40°C OUTPUT VOLTAGE HIGH vs. OUTPUT SOURCE CURRENT (VCC - VOH, VCC = 3.3V) 200 180 0 100 MAX44280 toc09 160 200 MAX44280 toc12 140 180 SUPPLY CURRENT (µA) 160 200 MAX44280 toc08 OUTPUT VOLTAGE LOW (mV) 180 OUTPUT VOLTAGE LOW (mV) MAX44280 toc07 200 OUTPUT VOLTAGE HIGH vs. OUTPUT SOURCE CURRENT (VCC - VOH, VCC = 1.8V) OUTPUT VOLTAGE HIGH (mV) OUTPUT VOLTAGE LOW vs. OUTPUT SINK CURRENT (VOL - VEE, VCC = 3.3V) 100 600 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 SUPPLY VOLTAGE (V) ����������������������������������������������������������������� Maxim Integrated Products 5 MAX44280 1.8V, 50MHz, Low-Offset, Low-Power, Rail-to-Rail I/O Op Amp Typical Operating Characteristics (continued) (VDD = 3.3V, VSS = 0V, VIN+ = VIN- = VDD/2, RL = 10kI to VDD/2, VSHDN = VDD, TA = -40NC to +125NC. Typical values are at TA = +25NC, unless otherwise noted. All devices are 100% production tested at TA = +25NC. Temperature limits are guaranteed by design.) SHUTDOWN SUPPLY CURRENT vs. SUPPLY VOLTAGE (VSHDN = VEE) 0.6 0.5 TA = -40°C 0.4 TA = +25°C 0.3 0.2 100 -40 80 60 -100 2.0 2.5 3.0 3.5 4.0 4.5 5.0 -120 0.01 5.5 0.1 1 10 100 1k 10k 100k 0 1 10 100 1k 10k FREQUENCY (kHz) FREQUENCY (kHz) POWER-SUPPLY REJECTION RATIO vs. FREQUENCY DC CMRR AND PSRR vs. TEMPERATURE INPUT VOLTAGE-NOISE DENSITY vs. FREQUENCY -40 -60 -80 DC CMRR -94 -96 -98 -100 DC PSRR -100 -120 0.1 1 10 100 FREQUENCY (kHz) 1k 10k 100k 100k MAX44280 toc18 -92 REJECTION RATIO (dB) -20 500 INPUT-VOLTAGE NOISE DENSITY (nV/√Hz) -90 MAX44280 toc16 0 0.01 0.01 SUPPLY VOLTAGE (V) MAX44280 toc17 1.5 -60 -80 40 0 0 PSRR (dB) -20 20 0.1 MAX44280 toc15 120 CMRR (dB) 0.7 0 MAX44280 toc14 TA = +125°C OPEN-LOOP GAIN (dB) 0.9 0.8 140 MAX44280 toc13 SHUTDOWN SUPPLY CURRENT (µA) 1.0 COMMON-MODE REJECTION RATIO vs. FREQUENCY OPEN-LOOP GAIN vs. FREQUENCY 450 400 350 300 250 200 150 100 50 0 -50 -25 0 25 50 75 TEMPERATURE (°C) 100 125 0.01 0.1 1 10 100 1k 10k FREQUENCY (kHz) ����������������������������������������������������������������� Maxim Integrated Products 6 MAX44280 1.8V, 50MHz, Low-Offset, Low-Power, Rail-to-Rail I/O Op Amp Typical Operating Characteristics (continued) (VDD = 3.3V, VSS = 0V, VIN+ = VIN- = VDD/2, RL = 10kI to VDD/2, VSHDN = VDD, TA = -40NC to +125NC. Typical values are at TA = +25NC, unless otherwise noted. All devices are 100% production tested at TA = +25NC. Temperature limits are guaranteed by design.) INPUT CURRENT-NOISE DENSITY vs. FREQUENCY MAX44280 toc19 4.5 4.0 2.5 2.0 MAX44280 toc22 -90 -95 -100 -105 1.5 -110 1.0 -115 0.5 TOTAL HARMONIC DISTORTION vs. FREQUENCY (VOUT = 2VP-P) -85 -90 THD (dB) 3.0 -120 10 -80 -85 3.5 0 4s/div -80 MAX44280 toc20 INPUT-CURRENT NOISE DENSITY (fA/√Hz) 5.0 0.5µV/div TOTAL HARMONIC DISTORTION (dB) TOTAL HARMONIC DISTORTION vs. INPUT AMPLITUDE (f = 10kHz, VCC = 5.5V, AV = 5V/V) MAX44280 toc21 0.1Hz TO 10Hz OUTPUT-VOLTAGE NOISE 100 1000 10k 0 100k 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 FREQUENCY (Hz) OUTPUT AMPLITUDE (V) SMALL-SIGNAL TRANSIENT RESPONSE (AV = 5V/V, RF = 4kI, RG = 1kI) LARGE-SIGNAL TRANSIENT RESPONSE (AV = 5V/V, RF = 4kI, RG = 1kI) MAX44280 toc23 INPUT 20mV/div VCC /2 MAX44280 toc24 INPUT 100mV/div -95 -100 VCC = 3.3V -105 VCC = 5.5V -115 OUTPUT 500mV/div OUTPUT 50mV/div VCC /2 -110 -120 1 10 100 1k 10k 100k 1G 100ns/div 100ns/div FREQUENCY (Hz) ����������������������������������������������������������������� Maxim Integrated Products 7 MAX44280 1.8V, 50MHz, Low-Offset, Low-Power, Rail-to-Rail I/O Op Amp Typical Operating Characteristics (continued) (VDD = 3.3V, VSS = 0V, VIN+ = VIN- = VDD/2, RL = 10kI to VDD/2, VSHDN = VDD, TA = -40NC to +125NC. Typical values are at TA = +25NC, unless otherwise noted. All devices are 100% production tested at TA = +25NC. Temperature limits are guaranteed by design.) STABILITY vs. CAPACITIVE LOAD AND ISOLATION RESISTANCE (RLOAD IN SERIES CLOAD) OVERSHOOT (%) 10 8 6 4 50 STABLE 40 GAIN = 10V/V 20 100 1k 10k 100k GAIN = 10V/V 10,000 1000 100 UNSTABLE STABLE 1 0 500 1000 1500 2000 2500 3000 3500 4000 100 CAPACITIVE LOAD (pF) RESISTANCE (I) 1000 10,000 CAPACITIVE LOAD (pF) POWER-UP TIME TURN-ON TIME FROM SHUTDOWN MAX44280 toc28 MAX44280 toc29 VCC 2V/div SHDN 2V/div GND VSS OUTPUT 500mV/div UNSTABLE 10 UNSTABLE 0 0 STABLE GAIN = 5V/V STABLE 10 2 GAIN = 5V/V UNSTABLE 30 100,000 MAX44280 toc27 MAX44280 toc26 12 60 ISOLATION RESISTANCE (Ω) MAX44280 toc25 14 STABILITY vs. CAPACITIVE AND RESISTIVE LOAD (RLOAD || CLOAD) RESISTIVE LOAD (Ω) PERCENT OVERSHOOT vs. RESISTIVE LOAD (VIN = 100mVP-P) OUTPUT 500mV/div VSS GND 4ms/div 10µs/div ����������������������������������������������������������������� Maxim Integrated Products 8 MAX44280 1.8V, 50MHz, Low-Offset, Low-Power, Rail-to-Rail I/O Op Amp Pin Configurations TOP VIEW VDD SHDN OUT 6 5 4 + IN+ 1 VSS IN- MAX44280 6 VDD 2 5 SHDN 3 4 OUT SC70 MAX44280 1 2 3 IN+ VSS IN- + THIN µDFN (Ultra-Thin LGA) Pin Description PIN NAME 1 IN+ Positive Input FUNCTION 2 VSS Negative Power Supply. Bypass with a 0.1FF capacitor to ground. 3 IN- Negative Input 4 OUT 5 SHDN 6 VDD Output Active-Low Shutdown Positive Power Supply. Bypass with a 0.1FF capacitor to ground. ����������������������������������������������������������������� Maxim Integrated Products 9 MAX44280 1.8V, 50MHz, Low-Offset, Low-Power, Rail-to-Rail I/O Op Amp Detailed Description Crossover Distortion This op amp features a low-noise integrated charge pump that creates an internal voltage rail 1V above VDD, which is used to power the input differential pair of pMOS transistors as shown in Figure 1. Such a unique architecture eliminates crossover distortion common in traditional CMOS input architecture (Figure 2), especially when used in a noninverting configuration, such as for Sallen-Key filters. The MAX44280 is a high-speed low-power op amp ideal for signal processing applications due to the device’s high precision and low-noise CMOS inputs. The device self-calibrates on power-up to eliminate effects of temperature and power-supply variation. The MAX44280 also features a low-power shutdown mode that greatly reduces quiescent current while the device is not operational and recovers in 30µs. The charge pump’s operating frequency lies well above the unity-gain frequency of the amplifier. Thanks to its highfrequency operation and ultra-quiet circuitry, the charge pump generates little noise, does not require external components, and is entirely transparent to the user. INTERNAL CHARGE PUMP MAX44280 INPUTS STRUCTURE STANDARD INPUT STRUCTURE Figure 1. Comparing the Input Structure of the MAX44280 to Standard Op-Amp Inputs AMPLIFIER OUTPUT CROSSOVER DISTORTION MAX44280 TIME Figure 2. Crossover Distortion of Typical Amplifiers ���������������������������������������������������������������� Maxim Integrated Products 10 MAX44280 1.8V, 50MHz, Low-Offset, Low-Power, Rail-to-Rail I/O Op Amp Applications Information Power-Up Autotrim The IC features an automatic trim that self-calibrates the VOS of this device to less than 50FV of input offset voltage on power-up. This self-calibration feature allows the device to eliminate input offset voltage effects due to power supply and operating temperature variation simply by cycling its power. The autotrim sequence takes approximately 10ms to complete and is triggered by an internal power-on-reset (POR) circuitry. During this time, the inputs and outputs are put into high impedance and left unconnected. Shutdown Operation The MAX44280 features an active-low shutdown mode that puts both inputs and outputs into high impedance and substantially lowers the quiescent current to less than 1FA. Putting the output into high impedance allows multiple outputs to be multiplexed onto a single output line without the additional external buffers. The device does not self-calibrate when exiting shutdown mode and retains its power-up trim settings. The device also recovers from shutdown in under 30Fs. The shutdown logic levels of the device is independent of supply, allowing the shutdown feature of the device to operate off of a 1.8V or 3.3V microcontroller, regardless of supply voltage. Rail-to-Rail Input/Output The input voltage range of the IC extends 100mV above VDD and below VSS. The wide input common-mode voltage range allows the op amp to be used as a buffer and as a differential amplifier in a wide-variety of signal processing applications. Output voltage high/low is designed to be only 50mV above VSS and below VDD allowing maximum dynamic range in single-supply applications. The high output current and capacitance drive capability of the device make it ideal as an ADC driver and a line driver. Input Bias Current The IC features a high-impedance CMOS input stage and a specialized ESD structure that allows low-input bias current operation at low-input, common-mode voltages. Low-input bias current is useful when interfacing with high-ohmic sensors. It is also beneficial for designing transimpedance amplifiers for photodiode sensors. This makes the device ideal for ground-referenced medical and industrial sensor applications. Active Filters The MAX44280 is ideal for a wide variety of active filter circuits that makes use of the wide bandwidth, rail-to-rail input/output stages and high-impedance CMOS inputs. Driver for Interfacing with the MAX11645 ADC The IC’s tiny size and low noise make it a good fit for driving 12- to 16-bit resolution ADCs in space-constrained applications. The Typical Application Circuit shows the MAX44280 amplifier output connected to a lowpass filter driving the MAX11645 ADC. The MAX11645 is part of a family of 3V and 5V, 12-bit and 10-bit, 2-channel ADCs. The MAX11645 offers sample rates up to 94ksps and measures two single-ended inputs or one differential input. These ADCs dissipate 670FA at the maximum sampling rate, but just 6FA at 1ksps and 0.5FA in shutdown. Offered in the ultra-tiny, 1.9mm x 2.2mm WLP and FMAX8 packages, the MAX11645 ADCs are an ideal fit to pair with the MAX44280 amplifier in portable applications. Where higher resolution is required, refer to the MAX1069 (14-bit) and MAX1169 (16-bit) ADC families. ���������������������������������������������������������������� Maxim Integrated Products 11 MAX44280 1.8V, 50MHz, Low-Offset, Low-Power, Rail-to-Rail I/O Op Amp Chip Information Ordering Information PROCESS: BiCMOS TEMP RANGE PIN-PACKAGE TOP MARK MAX44280AXT+ -40NC to +125NC 6 SC70 +AED MAX44280AYT+ -40NC to +125NC PART 6 Thin FDFN (Ultra-Thin LGA) +AZ +Denotes a lead(Pb)-free/RoHS-compliant package. ���������������������������������������������������������������� Maxim Integrated Products 12 MAX44280 1.8V, 50MHz, Low-Offset, Low-Power, Rail-to-Rail I/O Op Amp Package Information For the latest package outline information and land patterns (footprints), 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 SC70 X6SN+1 21-0077 90-0189 6 Thin FDFN (Ultra-Thin LGA) Y61A1+1 21-0190 90-0233 ���������������������������������������������������������������� Maxim Integrated Products 13 MAX44280 1.8V, 50MHz, Low-Offset, Low-Power, Rail-to-Rail I/O Op Amp Package Information (continued) For the latest package outline information and land patterns (footprints), 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. ���������������������������������������������������������������� Maxim Integrated Products 14 MAX44280 1.8V, 50MHz, Low-Offset, Low-Power, Rail-to-Rail I/O Op Amp Package Information (continued) For the latest package outline information and land patterns (footprints), 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. ���������������������������������������������������������������� Maxim Integrated Products 15 MAX44280 1.8V, 50MHz, Low-Offset, Low-Power, Rail-to-Rail I/O Op Amp Revision History REVISION NUMBER REVISION DATE 0 12/11 Initial release 1 4/12 Updated Package Thermal Characteristics, Electrical Characteristics, and Ordering Information. DESCRIPTION PAGES CHANGED — 2, 3, 12 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. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2012 Maxim Integrated Products 16 Maxim is a registered trademark of Maxim Integrated Products, Inc.