19-5709; Rev 0; 12/10 KIT ATION EVALU LE B A IL A AV Rail-to-Rail, 200kHz Op Amp with Shutdown in a Tiny, 6-Bump WLP Features The MAX44265 op amp features a maximized ratio of gain bandwidth (GBW) to supply current and is ideal for battery-powered applications such as handsets, tablets, notebooks, and portable medical equipment. This CMOS op amp features an ultra-low input-bias current of 1pA, rail-to- rail input and output, low supply current of 4µA, and operates from a single 1.8V to 5.5V supply. For additional power conservation, the IC also features a low-power shutdown mode that reduces supply current to 1nA and puts the amplifier’s outputs in a high-impedance state. This device is unity-gain stable with a 200kHz GBW product. ♦ 200kHz GBW It is available in a space-saving, 0.9mm x 1.3mm, 6-bump WLP package and is specified over the -40°C to +85°C extended operating temperature range. ♦ Unity-Gain Stable ♦ Ultra-Low 4µA Supply Current ♦ Single 1.8V to 5.5V Supply Voltage Range ♦ Ultra-Low 1pA Input Bias Current ♦ Rail-to-Rail Input and Output Voltage Ranges ♦ Low ±200µV Input Offset Voltage ♦ Low 0.001µA Shutdown Current ♦ High-Impedance Output During Shutdown ♦ Available in a Tiny, 0.9mm x 1.3mm, 6-Bump WLP Package Applications Ordering Information Cell Phones Tablet/Notebook Computers Mobile Accessories PART TEMP RANGE PINPACKAGE MAX44265EWT+ -40°C to +85°C 6 WLP TOP MARK +BY Battery-Powered Devices ________________________________________________________________ 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. MAX44265 General Description MAX44265 Rail-to-Rail, 200kHz Op Amp with Shutdown in a Tiny, 6-Bump WLP ABSOLUTE MAXIMUM RATINGS Power-Supply Voltage (VDD to VSS) ......................-0.3V to +6.0V IN_+, IN_-, OUT_, SHDN_............... (VSS - 0.3V) to (VDD + 0.3V) Current into IN_+, IN_- ......................................................±20mA Output Short-Circuit Duration to VDD or VSS ..............Continuous Continuous Power Dissipation (TA = +70°C) 6-Bump WLP (derate 10.5mW/°C above +70°C).........840mW Operating Temperature Range .......................... -40°C to +85°C Junction Temperature .....................................................+150°C Storage Temperature Range ............................-65°C to +150°C Soldering Temperature (reflow) .......................................+260°C 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 (VDD = 1.8V to 5.5V, VSS = 0V, VCM = 0V, VOUT = VDD/2, RL = ∞ connected to VDD/2, SHDN_ = VDD, TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER Supply Voltage Range Supply Current Shutdown Supply Current Input Offset Voltage SYMBOL VDD IDD IDD(SHDN_) CONDITIONS Guaranteed by PSRR test MIN TYP 1.8 MAX UNITS 5.5 V VDD = 1.8V 4 VDD = 5.5V 4 5.0 0.001 0.5 µA SHDN_ = GND ±0.2 ±1 mV IB (Note 2) ±1 ±10 pA Input Offset Current IOS (Note 2) ±1 ±10 pA Input Resistance RIN Input Common-Mode Range VCM Input Bias Current VOS µA Common mode 1 Differential mode, -1mV < VIN < +1mV 10 Guaranteed by CMRR test VSS 0.1 GΩ VDD + 0.1 V Common-Mode Rejection Ratio CMRR -0.1V < VCM < VDD + 0.1V, VDD = 5.5V 70 80 dB Power-Supply Rejection Ratio PSRR 1.8V < VDD < 5.5V 65 95 dB 25mV < VOUT < VDD - 25mV, RL = 100kΩ, VDD = 5.5V 95 120 100mV < VOUT < VDD - 100mV, RL = 5kΩ, VDD = 5.5V 95 110 Open-Loop Gain Output-Voltage-Swing High AVOL VOH Output-Voltage-Swing Low VOL Output Short-Circuit Current IOUT(SC) VDD - VOUT VOUT - VSS RL = 100kΩ 2.5 5 RL = 5kΩ 50 70 RL = 1kΩ 250 RL = 100kΩ 2.5 5 RL = 5kΩ 50 70 RL = 1kΩ 2 dB mV mV 250 ±15 _______________________________________________________________________________________ mA Rail-to-Rail, 200kHz Op Amp with Shutdown in a Tiny, 6-Bump WLP (VDD = 1.8V to 5.5V, VSS = 0V, VCM = 0V, VOUT = VDD/2, RL = ∞ connected to VDD/2, SHDN_ = VDD, TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL SHDN_ Logic Low VIL SHDN_ Logic High VIH SHDN_ Input Bias Current Output Leakage in Shutdown CONDITIONS MIN TYP MAX VDD = 1.8V to 3.6V 0.4 VDD = 3.6V to 5.5V 0.8 VDD = 1.8V to 3.6V 1.4 VDD = 3.6V to 5.5V 2 IIL SHDN_ = VSS (Note 2) IIH SHDN_ = VDD V V 1 500 IOUT(SHDN_) SHDN_ = VSS, VOUT = 0V to VDD UNITS 1 500 nA nA Gain-Bandwidth Product 200 kHz Slew Rate 0.1 V/µs Capacitive-Load Stability (See the Driving Capacitive Loads Section) CLOAD No sustained oscillations AV = 1V/V 30 AV = 10V/V 250 RL = 5kΩ, AV = 1V/V 200 RISO = 1kΩ, AV = 1V/V 100 pF Input Voltage-Noise Density f = 1kHz 400 nV/√Hz Input Current-Noise Density f = 1kHz 0.001 pA/√Hz Settling Time To 0.1%, VOUT = 2V step, AV = -1V/V 18 µs Delay Time to Shutdown tSH IDD = 5% of normal operation, VDD = 5.5V, VSHDN_ = 5.5V to 0 step 2 µs Delay Time to Enable tEN VOUT = 2.7V, VOUT settles to 0.1%, VDD = 5.5V, VSHDN_ = 0 to 5.5V step 30 µs VDD = 0 to 5.5V step 5 µs Power-Up Time ELECTRICAL CHARACTERISTICS (VDD = 1.8V to 5.5V, VSS = 0V, VCM = 0V, VOUT = VDD/2, RL = ∞ connected to VDD/2, SHDN_ = VDD, TA = -40°C to +85°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS Supply Voltage Range VDD Guaranteed by PSRR test Supply Current IDD VDD = 5.5V Shutdown Supply Current Input Offset Voltage IDD(SHDN_) MIN TYP 1.8 SHDN_ = GND VOS Input-Offset-Voltage Temperature Coefficient TCVOS ±5 MAX UNITS 5.5 V 5.5 µA 1 µA ±5 mV µV/°C _______________________________________________________________________________________ 3 MAX44265 ELECTRICAL CHARACTERISTICS (continued) MAX44265 Rail-to-Rail, 200kHz Op Amp with Shutdown in a Tiny, 6-Bump WLP ELECTRICAL CHARACTERISTICS (continued) (VDD = 1.8V to 5.5V, VSS = 0V, VCM = 0V, VOUT = VDD/2, RL = ∞ connected to VDD/2, SHDN_ = VDD, TA = -40°C to +85°C, unless otherwise noted.) (Note 1) PARAMETER MAX UNITS IB ±30 pA Input Offset Current IOS ±20 pA Input Common-Mode Range VCM VDD + 0.05 V Input Bias Current SYMBOL CONDITIONS Guaranteed by CMRR test MIN TYP VSS 0.05 Common-Mode Rejection Ratio CMRR -0.05V < VCM < VDD + 0.05V, VDD = 5.5V 60 dB Power-Supply Rejection Ratio PSRR 1.8V < VDD < 5.5V 59 dB 25mV < VOUT < VDD - 25mV, RL = 100kΩ, VDD = 5.5V 85 150mV < VOUT < VDD - 150mV, RL = 5kΩ, VDD = 5.5V 80 Open-Loop Gain AVOL Output-Voltage-Swing High VOH VDD - VOUT Output-Voltage-Swing Low VOL VOUT - VSS SHDN_ Logic Low VIL SHDN_ Logic High VIH SHDN_ Input-Bias Current Output Leakage in Shutdown dB RL = 100kΩ 5 RL = 5kΩ 90 RL = 100kΩ 5 RL = 5kΩ 90 VDD = 1.8V to 3.6V 0.4 VDD = 3.6V to 5.5V 0.8 VDD = 1.8V to 3.6V 1.4 VDD = 3.6V to 5.5V 2 mV V V IIL SHDN_ = VSS 5 nA IIH SHDN_ = VDD 1000 nA 1000 nA IOUT(SHDN_) SHDN_ = VSS, VOUT = 0V to VDD Note 1: Specifications are 100% tested at TA = +25°C (exceptions noted). All temperature limits are guaranteed by design. Note 2: Guaranteed by design, not production tested. 4 mV _______________________________________________________________________________________ Rail-to-Rail, 200kHz Op Amp with Shutdown in a Tiny, 6-Bump WLP TA = +25°C TA = -40°C 4 3 TA = +85°C 2 2.6 3.4 4.2 5.0 MAX44265 toc03 -250 4 -500 2 -750 -40 5.5 TA = +85°C -1000 -15 10 35 60 0.5 0 85 1.0 1.5 2.0 2.5 3.0 TEMPERATURE (°C) VCM (V) INPUT OFFSET VOLTAGE vs. TEMPERATURE INPUT BIAS CURRENT vs. TEMPERATURE INPUT BIAS CURRENT vs. INPUT COMMON-MODE VOLTAGE 100 6 5 50 5 4 3 2 4 -50 -100 IB- 3 1 IB (pA) IB (pA) 0 2 0 -1 1 -150 -2 -200 0 -250 -1 -300 -2 -4 -350 -3 -5 -15 10 35 60 85 MAX44265 toc06 7 MAX44265 toc04 150 IB+ -3 -40 -15 10 35 60 -0.5 85 0 0.5 1.0 1.5 2.0 2.5 3.0 TEMPERATURE (°C) TEMPERATURE (°C) VCM (V) POWER-SUPPLY REJECTION RATIO vs. FREQUENCY COMMON-MODE REJECTION RATIO vs. TEMPERATURE COMMON-MODE REJECTION RATIO vs. FREQUENCY 140 MAX44265 toc07 0 -20 0 MAX44265 toc08 -40 TA = +25°C 0 VSUPPLY (V) 200 120 -10 -20 100 CMRR (dB) -40 -60 -80 3.5 -30 CMRR (dB) VOS (µV) 6 TA = -40°C 250 MAX44265 toc09 1.8 PSRR (dB) 500 8 0 1 750 VOS (µV) 6 10 MAX44265 toc05 ICC (µA) 7 1000 MAX44265 toc02 8 12 SHUTDOWN SUPPLY CURRENT (nA) MAX44265 toc01 9 5 INPUT OFFSET VOLTAGE vs. INPUT COMMON-MODE VOLTAGE SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE SUPPLY CURRENT vs. SUPPLY VOLTAGE 80 60 -40 -50 -60 -70 40 -80 -100 20 -120 0 0.1 1 10 100 FREQUENCY (Hz) 1k 10k -90 -100 -40 -15 10 35 TEMPERATURE (°C) 60 85 1 10 100 1k 10k 100k FREQUENCY (Hz) _______________________________________________________________________________________ 5 MAX44265 Typical Operating Characteristics (VDD = 3V, VSS = VCM = 0V, RL to VDD/2, TA = +25°C, unless otherwise noted.) Typical Operating Characteristics (continued) (VDD = 3V, VSS = VCM = 0V, RL to VDD/2, TA = +25°C, unless otherwise noted.) 0.2 0.1 0 -0.1 -0.2 100 RL = 5kΩ 10 RL = 100kΩ -0.4 3.4 4.2 5.0 5.5 RL = 100kΩ 10 -15 -40 10 35 60 -40 85 -15 10 35 60 85 TEMPERATURE (°C) TEMPERATURE (°C) OPEN-LOOP GAIN vs. TEMPERATURE (RL TO VSS) OPEN-LOOP GAIN vs. TEMPERATURE (RL TO VDD) GAIN AND PHASE vs. FREQUENCY (RL = ∞, CLOAD = 15pF) RL = 100kΩ 120 RL = 5kΩ 100 AVOL (dB) RL = 5kΩ 80 RL = 1kΩ 60 80 40 40 20 20 0 RL = 1kΩ 60 10 35 60 85 -40 -15 TEMPERATURE (°C) 10 35 60 45 PHASE 0 60 135 -25 40 90 20 45 -20 -45 -40 -90 -60 -135 -180 10 PHASE 0 -40 -90 -60 -135 -75 -80 -180 -85 -225 -95 10k FREQUENCY (Hz) 100k 1M 10k 100k -55 -45 1k 1k -45 -20 -100 100 -35 THD+N (dB) GAIN PHASE (DEGREES) -5 -15 100 0 TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY 180 80 GAIN (dB) 20 FREQUENCY (Hz) 225 AV = 1000V/V 10 90 MAX44265 toc17 MAX44265 toc16 100 1 40 TEMPERATURE (°C) GAIN AND PHASE vs. FREQUENCY (RL = 5kΩ, CLOAD = 100pF) 0 135 1 85 -65 VOUT = 2VP-P 10 180 60 -80 0 -15 AV = 1000V/V GAIN GAIN (dB) 100 MAX44265 toc15 80 MAX44265 toc14 140 MAX44265 toc13 RL = 100kΩ 120 6 RL = 5kΩ SUPPLY VOLTAGE (V) 140 -40 100 1 1 2.6 RL = 1kΩ 1000 RL TO VSS VOH = VDD - VOUT -0.3 1.8 VOL = VOUT - VSS RL TO VDD 100 1k FREQUENCY (Hz) _______________________________________________________________________________________ 10k 1M PHASE (DEGREES) 0.3 10000 OUTPUT VOLTAGE SWING (mV) 0.4 RL = 1kΩ OUTPUT VOLTAGE SWING (mV) 0.5 MAX44265 toc11 1000 MAX44265 toc10 0.6 SLEW RATE (V/µS) OUTPUT-SWING LOW vs. TEMPERATURE OUTPUT-SWING HIGH vs. TEMPERATURE MAX44265 toc12 SLEW RATE vs. SUPPLY VOLTAGE AVOL (dB) MAX44265 Rail-to-Rail, 200kHz Op Amp with Shutdown in a Tiny, 6-Bump WLP Rail-to-Rail, 200kHz Op Amp with Shutdown in a Tiny, 6-Bump WLP VOLTAGE-NOISE DENSITY vs. FREQUENCY RESISTOR ISOLATION vs. CAPACITIVE LOAD POWER-UP SETTLING TIME MAX44265 toc18 AV = 1V/V FOR AV = 10V/V NO RISO NEEDED 7000 MAX44265 toc19 MAX44265 toc20 8000 6000 RISO (Ω) VOLTAGE NOISE (nV/√Hz) 10,000 1000 VDD 1V/div 5000 4000 3000 OUTPUT 500mV/div 2000 IN+ = VDD / 2 AV = 1V/V 1000 100 0 1 10 100 1k 10k 100k 100 10 1000 CLOAD (pF) SHUTDOWN RESPONSE SMALL-SIGNAL PULSE RESPONSE (CLOAD = 15pF) MAX44265 toc21 500ns/div 10,000 FREQUENCY (Hz) SMALL-SIGNAL PULSE RESPONSE (CLOAD = 100pF) MAX44265 toc22 IN+ = VDD / 2 AV = 1V/V 3V SHDN MAX44265 toc23 AV = 1V/V AV = 10V/V IN+ 50mV/div IN+ 5mV/div OUTPUT 50mV/div OUTPUT 50mV/div 0V 1.5V OUTPUT 0V 20µs/div 10µs/div 20µs/div LARGE-SIGNAL PULSE RESPONSE (CLOAD = 15pF) LARGE-SIGNAL PULSE RESPONSE (CLOAD = 100pF) MAX44265 toc24 MAX44265 toc25 AV = 1V/V AV = 10V/V IN+ 1V/div IN+ 100mV/div OUTPUT 1V/div OUTPUT 1V/div 10µs/div 100µs/div _______________________________________________________________________________________ 7 MAX44265 Typical Operating Characteristics (continued) (VDD = 3V, VSS = VCM = 0V, RL to VDD/2, TA = +25°C, unless otherwise noted.) Typical Operating Characteristics (continued) (VDD = 3V, VSS = VCM = 0V, RL to VDD/2, TA = +25°C, unless otherwise noted.) AV = +1V/V VOUT = 100mVP-P CLOAD = 15pF 8 6 4 MAX44265 toc26 10 MAX44265 toc27 LARGE-SIGNAL GAIN vs. FREQUENCY SMALL-SIGNAL GAIN vs. FREQUENCY AV = +1V/V VOUT = 2VP-P CLOAD = 15pF 3 2 1 2 GAIN (dB) GAIN (dB) 4 0 -2 0 -1 -4 -2 -6 -3 -8 -4 -10 10 1 100 1 1000 10 100 FREQUENCY (kHz) FREQUENCY (kHz) PERCENT OVERSHOOT vs. CAPACITIVE LOAD OUTPUT WAVEFORM WITH RISO (CLOAD = 100pF, RISO = 6.2kΩ) MAX44265 toc29 MAX44265 toc28 4.0 AV = 1V/V 3.5 RL = 1MΩ AV = 1V/V IN+ 50mV/div 3.0 OVERSHOOT (%) MAX44265 Rail-to-Rail, 200kHz Op Amp with Shutdown in a Tiny, 6-Bump WLP 2.5 RL = 100kΩ 2.0 1.5 OUTPUT 50mV/div 1.0 RL = 10kΩ 0.5 0 0 20 40 60 80 20µs/div 100 CLOAD (pF) OUTPUT WAVEFORM WITHOUT RISO (CLOAD = 100pF) MAX44265 toc30 AV = 1V/V IN+ 50mV/div OUTPUT 50mV/div 20µs/div 8 _______________________________________________________________________________________ Rail-to-Rail, 200kHz Op Amp with Shutdown in a Tiny, 6-Bump WLP TOP VIEW MAX44265 + IN+ VSS A1 A2 IN- VDD B1 B2 OUT SHDN C1 C2 WLP BUMP SIDE DOWN Pin Description PIN NAME A1 IN+ A2 VSS Negative Supply Voltage B1 IN- Inverting Amplifier Input C1 OUT B2 VDD C2 SHDN FUNCTION Noninverting Amplifier Input Amplifier Output Positive Supply Voltage Shutdown _______________________________________________________________________________________ 9 MAX44265 Pin Configuration MAX44265 Rail-to-Rail, 200kHz Op Amp with Shutdown in a Tiny, 6-Bump WLP Detailed Description Featuring a maximized ratio of GBW to supply current, low operating supply voltage, low input bias current, and rail-to-rail inputs and outputs, the MAX44265 is an excellent choice for precision or general-purpose, lowcurrent, low-voltage, battery-powered applications. This CMOS device consumes an ultra-low 4µA (typ) supply current and has a 200µV (typ) offset voltage. For additional power conservation, the IC features a low-power shutdown mode that reduces supply current to 1nA (typ) and puts the amplifier’s output in a high-impedance state. This device is unity-gain stable with a 200kHz GBW product, driving capacitive loads up to 30pF. The capacitive load can be increased to 250pF when the amplifier is configured for a 10V/V gain. RAIL-TO-RAIL OUTPUT VOLTAGE RANGE 3V IN_ 1V/div 0V 3V OUT_ 1V/div 0V Rail-to-Rail Inputs and Outputs The IC has a parallel-connected n- and p-channel differential input stage that allows an input common-mode voltage range that extends 100mV beyond the positive and negative supply rails, with excellent common-mode rejection. The IC is capable of driving the output to within 5mV of both supply rails with a 100kΩ load. This device can drive a 5kΩ load with swings to within 60mV of the rails. Figure 1 shows the output voltage swing of the IC configured as a unity-gain buffer powered from a single 3V supply. 200µs/div Figure 1. Rail-to-Rail Output Voltage Range Low Input Bias Current The IC features ultra-low 1pA (typ) input bias current. The variation in the input bias current is minimal with changes in the input voltage due to very high input impedance (in the order of 1GΩ). RISO MAX44265 RL CL Applications Information Driving Capacitive Loads The IC’s amplifier is unity-gain stable for loads up to 30pF. However, the capacitive load can be increased to 250pF when the amplifier is configured for a minimum gain of 10V/V. Applications that require greater capacitive-drive capability should use an isolation resistor between the output and the capacitive load (Figure 2). Also, in unity-gain applications with relatively small RL (approximately 5kΩ), the capacitive load can be increased up to 200pF. 10 AV = RL ≈ 1V/V RL + RISO Figure 2. Using a Resistor to Isolate a Capacitive Load from the Op Amp ______________________________________________________________________________________ Rail-to-Rail, 200kHz Op Amp with Shutdown in a Tiny, 6-Bump WLP Power-Up Settling Time The IC typically requires 5µs after power-up. Supply settling time depends on the supply voltage, the value of the bypass capacitor, the output impedance of the incoming supply, and any lead resistance or inductance between components. Op-amp settling time depends primarily on the output voltage and is slewrate limited. Figure 3 shows MAX44265 in a noninverting voltage follower configuration with the input held at midsupply. The output settles in approximately 18µs for VDD = 3V (see the Typical Operating Characteristics for power-up settling time). MAX44265 Power-Supply Considerations The IC is optimized for single 1.8V to 5.5V supply operation. A high amplifier power-supply rejection ratio of 95dB (typ) allows the devices to be powered directly from a battery, simplifying design and extending battery life. 5.5V 0V IN- VDD 100kΩ MAX44265 OUT IN+ VSS 100kΩ Figure 3. Power-Up Test Configuration Shutdown Mode Power-Supply Bypassing and Layout The IC features an active-low shutdown input. The device enters shutdown in 2µs (typ) and exit in 30µs (typ). The amplifier’s outputs are in a high-impedance state in shutdown mode. Drive SHDN low to enter shutdown. Drive SHDN high to enable the amplifier. To minimize noise, bypass VDD with a 0.1µF capacitor to ground, as close to the pin as possible. Good layout techniques optimize performance by decreasing the amount of stray capacitance and inductance to the op amps’ inputs and outputs. Minimize stray capacitance and inductance by placing external components close to the IC. Chip Information PROCESS: BiCMOS ______________________________________________________________________________________ 11 MAX44265 Rail-to-Rail, 200kHz Op Amp with Shutdown in a Tiny, 6-Bump WLP 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. 12 PACKAGE TYPE PACKAGE CODE OUTLINE NO. LAND PATTERN NO. 6 WLP W61B1+1 21-0217 — ______________________________________________________________________________________ Rail-to-Rail, 200kHz Op Amp with Shutdown in a Tiny, 6-Bump WLP REVISION NUMBER REVISION DATE 0 12/10 DESCRIPTION Initial release PAGES CHANGED — 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 © 2010 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc. MAX44265 Revision History