MAX9910_10

19-3406; Rev 2; 10/10 200kHz, 4µA, Rail-to-Rail I/O Op Amps with Shutdown General Description The single MAX9910/MAX9911 and dual MAX9912/ MAX9913 operational amplifiers (op amps) feature a maximized ratio of gain bandwidth (GBW) to supply current and are ideal for battery-powered applications such as portable instrumentation, portable medical equipment, and wireless handsets. These CMOS op amps feature an ultra-low input-bias current of 1pA, railto-rail inputs and outputs, low supply current of 4µA, and operate from a single 1.8V to 5.5V supply. For additional power conservation, the MAX9911/MAX9913 feature a low-power shutdown mode that reduces supply current to 1nA, and puts the amplifiers’ outputs in a high-impedance state. These devices are unity-gain stable with a 200kHz GBW product. The MAX9910 is available in a 5-pin SC70 package. The MAX9911 is available in tiny 6-bump WLP and a 6-pin SC70 packages. The MAX9912 is available in an 8-pin SOT23 package, and the MAX9913 is available in a 10pin µMAX® package. All devices are specified over the -40°C to +85°C extended operating temperature range. o 200kHz GBW o Ultra-Low 4µA Supply Current o Single 1.8V to 5.5V Supply Voltage Range o Ultra-Low 1pA Input Bias Current o Rail-to-Rail Input and Output Voltage Ranges o Low ±200µV Input Offset Voltage o Low 0.001µA Shutdown Current o High-Impedance Output During Shutdown (MAX9911/MAX9913) o Unity-Gain Stable o Available in Tiny WLP, SC70, SOT23, and µMAX Packages Features MAX9910–MAX9913 Applications Portable Medical Devices Portable Test Equipment Laptops Data-Acquisition Equipment PART MAX9910EXK+T MAX9910EXK-T MAX9911EXT+T MAX9911EXT-T MAX9911EWT+ MAX9912EKA+T MAX9912EKA-T VDD Ordering Information TEMP RANGE -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C PINPACKAGE 5 SC70 5 SC70 6 SC70 6 SC70 6 WLP 8 SOT23 8 SOT23 10 µMAX 10 µMAX TOP MARK AGA AGA ACA ACA BQ AEJY AEJY — — Typical Operating Circuit 1.8V TO 5.5V OUTA MAX9913EUB VOUT 25kΩ INA- OUTB MAX9913EUB+ +Denotes lead(Pb)-free/RoHS-compliant package. VMID INA+ INB- VSS INB+ VMID + VBIAS ON MAX9913 ON SHDNA OFF SHDNB OFF Selector Guide PART MAX9910EXK-T AMPLIFIERS PER PACKAGE 1 1 2 2 SHUTDOWN MODE No Yes No Yes 1MΩ CE RE GLUCOSE WE SENSOR MAX9911EXT-T MAX9912EKA-T MAX9913EUB THREE ELECTRODE GLUCOSE METER APPLICATION WITH SHUTDOWN µMAX is a registered trademark of Maxim Integrated Products, Inc. ________________________________________________________________ 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.mxim-ic.com. 200kHz, 4µA, Rail-to-Rail I/O Op Amps with Shutdown MAX9910–MAX9913 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) 5-Pin SC70 (derate 3.1mW/°C above +70°C) ............. 247mW 6-Bump WLP (derate 10.5mW/°C above +70°C).........840mW 6-Pin SC70 (derate 3.1mW/°C above +70°C) ............. 245mW 8-Pin SOT23 (derate 9.1mW/°C above +70°C)........... 727mW 10-Pin µMAX (derate 5.6mW/°C above +70°C) ...........444mW Operating Temperature Range .......................... -40°C to +85°C Junction Temperature .....................................................+150°C Storage Temperature Range ............................-65°C to +150°C Lead Temperature (excluding WLP, soldering 10s) ........+300°C Soldering Temperature (reflow) Lead(Pb)-Free Packages.............................................+260°C Packages Containing Lead(Pb)...................................+240°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 SYMBOL VDD CONDITIONS Guaranteed by PSRR test MAX9910/MAX9911 Supply Current IDD MAX9912/MAX9913 Shutdown Supply Current Input Offset Voltage Input-Offset-Voltage Matching Input Bias Current Input Offset Current Input Resistance Input Common-Mode Range Common-Mode Rejection Ratio Power-Supply Rejection Ratio IB IOS RIN VCM CMRR PSRR IDD(SHDN_) VOS MAX9912/MAX9913 (Note 2) (Note 2) Common mode Differential mode, -1mV < VIN < +1mV Guaranteed by CMRR test -0.1V < VCM < VDD + 0.1V, VDD = 5.5V 1.8V < VDD < 5.5V 25mV < VOUT < VDD - 25mV, RL = 100kΩ, VDD = 5.5V 100mV < VOUT < VDD - 100mV, RL = 5kΩ, VDD = 5.5V RL = 100kΩ Output-Voltage-Swing High VOH VDD - VOUT RL = 5kΩ RL = 1kΩ RL = 100kΩ Output-Voltage-Swing Low Channel-to-Channel Isolation Output Short-Circuit Current VOL CHISO IOUT(SC) VOUT - VSS RL = 5kΩ RL = 1kΩ Specified at DC, MAX9912/MAX9913 VSS 0.1 70 65 95 95 80 95 120 dB 110 2.5 50 250 2.5 50 250 100 ±15 dB mA 5 70 mV 5 70 mV VDD = 1.8V VDD = 5.5V VDD = 1.8V VDD = 5.5V MIN 1.8 4 4 7 7 0.001 ±0.2 ±250 ±1 ±1 1 10 VDD + 0.1 ±10 ±10 9 0.5 ±1 µA mV µV pA pA GΩ V dB dB 5.0 µA TYP MAX 5.5 UNITS V SHDN_ = GND, MAX9911/MAX9913 Open-Loop Gain AVOL 2 _______________________________________________________________________________________ 200kHz, 4µA, Rail-to-Rail I/O Op Amps with Shutdown ELECTRICAL CHARACTERISTICS (continued) (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 SHDN_ Logic Low SHDN_ Logic High SHDN_ Input Bias Current Output Leakage in Shutdown Gain-Bandwidth Product Slew Rate AV = 1V/V Capacitive-Load Stability (See the Driving Capacitive Loads Section) Input Voltage-Noise Density Input Current-Noise Density Settling Time Delay Time to Shutdown Delay Time to Enable Power-Up Time tSH tEN CLOAD No sustained oscillations f = 1kHz f = 1kHz To 0.1%, VOUT = 2V step, AV = -1V/V IDD = 5% of normal operation, VDD = 5.5V, VSHDN_ = 5.5V to 0 step VOUT = 2.7V, VOUT settles to 0.1%, VDD = 5.5V, VSHDN_ = 0 to 5.5V step VDD = 0 to 5.5V step AV = 10V/V RL = 5kΩ, AV = 1V/V RISO = 1kΩ, AV = 1V/V SYMBOL VIL VIH IIL IIH IOUT(SHDN_) CONDITIONS VDD = 1.8V to 3.6V, MAX9911/MAX9913 VDD = 3.6V to 5.5V, MAX9911/MAX9913 VDD = 1.8V to 3.6V, MAX9911/MAX9913 VDD = 3.6V to 5.5V, MAX9911/MAX9913 SHDN_ = VSS, MAX9911/MAX9913 (Note 2) SHDN_ = VDD , MAX9911/MAX9913 SHDN_ = VSS, VOUT = 0V to VDD, MAX9911/MAX9913 1 200 0.1 30 250 200 100 400 0.001 18 2 30 5 nV/√Hz pA/√Hz µs µs µs µs pF 1.4 2 1 500 500 MIN TYP MAX 0.4 0.8 UNITS V V nA nA kHz V/µs MAX9910–MAX9913 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 Supply Voltage Range Supply Current Shutdown Supply Current Input Offset Voltage Input-Offset-Voltage Temperature Coefficient SYMBOL VDD IDD IDD(SHDN_) VOS TCVOS ±5 CONDITIONS Guaranteed by PSRR test MAX9910/MAX9911 MAX9912/MAX9913 VDD = 5.5V MIN 1.8 TYP MAX 5.5 5.5 11 1 ±5 UNITS V µA µA mV µV/°C SHDN_ = GND, MAX9911/MAX9913 _______________________________________________________________________________________ 3 200kHz, 4µA, Rail-to-Rail I/O Op Amps with Shutdown MAX9910–MAX9913 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 Input Bias Current Input Offset Current Input Common-Mode Range Common-Mode Rejection Ratio Power-Supply Rejection Ratio SYMBOL IB IOS VCM CMRR PSRR Guaranteed by CMRR test -0.05V < VCM < VDD + 0.05V, VDD = 5.5V 1.8V < VDD < 5.5V 25mV < VOUT < VDD - 25mV, RL = 100kΩ, VDD = 5.5V 150mV < VOUT < VDD - 150mV, RL = 5kΩ, VDD = 5.5V VDD - VOUT VOUT - VSS VDD = 1.8V to 3.6V VDD = 3.6V to 5.5V VDD = 1.8V to 3.6V, MAX9911/MAX9913 VDD = 3.6V to 5.5V, MAX9911/MAX9913 SHDN_ = VSS, MAX9911/MAX9913 SHDN_ = VDD, MAX9911/MAX9913 1.4 2 5 1000 1000 RL = 100kΩ RL = 5kΩ RL = 100kΩ RL = 5kΩ VSS 0.05 60 59 85 dB 80 5 90 5 90 0.4 0.8 mV mV V V nA nA nA CONDITIONS MIN TYP MAX ±30 ±20 VDD + 0.05 UNITS pA pA V dB dB Open-Loop Gain AVOL Output-Voltage-Swing High Output-Voltage-Swing Low SHDN_ Logic Low SHDN_ Logic High SHDN_ Input-Bias Current Output Leakage in Shutdown VOH VOL VIL VIH IIL IIH SHDN_ = VSS, VOUT = 0V to VDD, IOUT(SHDN_) MAX9911/MAX9913 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 _______________________________________________________________________________________ 200kHz, 4µA, Rail-to-Rail I/O Op Amps with Shutdown MAX9910–MAX9913 Typical Operating Characteristics (VDD = 3V, VSS = VCM = 0V, RL to VDD / 2, TA = +25°C, unless otherwise noted.) SUPPLY CURRENT vs. SUPPLY VOLTAGE MAX9910 toc01 SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE MAX9910 toc02 INPUT OFFSET VOLTAGE vs. INPUT COMMON-MODE VOLTAGE 750 500 TA = -40°C TA = +25°C MAX9910 toc03 9 8 7 ICC (µA) 6 5 4 3 2 1 1.8 2.6 3.4 4.2 5.0 TA = +85°C SINGLE TA = +25°C TA = +85°C TA = +25°C TA = -40°C DUAL TA = -40°C 12 SHUTDOWN SUPPLY CURRENT (nA) 10 8 6 4 2 0 1000 VOS (µV) 250 0 -250 -500 -750 -1000 -40 -15 10 35 60 85 0 0.5 TEMPERATURE (°C) TA = +85°C 1.0 1.5 VCM (V) 2.0 2.5 3.0 5.5 VSUPPLY (V) INPUT OFFSET VOLTAGE vs. TEMPERATURE 150 100 50 0 VOS (µV) -50 -100 -150 -200 -250 -300 -350 -40 -15 10 35 60 85 TEMPERATURE (°C) IB (pA) MAX9910 toc04 INPUT BIAS CURRENT vs. TEMPERATURE MAX9910 toc05 INPUT BIAS CURRENT vs. INPUT COMMON-MODE VOLTAGE 4 3 2 MAX9910 toc06 200 7 6 5 4 3 2 1 0 -1 -2 -3 -40 -15 10 35 60 IB+ IB- 5 1 IB (pA) 85 0 -1 -2 -3 -4 -5 -0.5 0 0.5 1.0 1.5 VCM (V) 2.0 2.5 3.0 3.5 TEMPERATURE (°C) POWER-SUPPLY REJECTION RATIO vs. FREQUENCY MAX9910 toc07 COMMON-MODE REJECTION RATIO vs. TEMPERATURE MAX9910 toc08 COMMON-MODE REJECTION RATIO vs. FREQUENCY -10 -20 -30 CMRR (dB) -40 -50 -60 -70 -80 MAX9910 toc09 0 -20 -40 140 120 100 CMRR (dB) 0 PSRR (dB) 80 60 40 20 0 -60 -80 -100 -120 0.1 1 10 100 1k 10k FREQUENCY (Hz) -90 -100 -40 -15 10 35 60 85 1 10 100 1k 10k 100k TEMPERATURE (°C) FREQUENCY (Hz) _______________________________________________________________________________________ 5 200kHz, 4µA, Rail-to-Rail I/O Op Amps with Shutdown MAX9910–MAX9913 Typical Operating Characteristics (continued) (VDD = 3V, VSS = VCM = 0V, RL to VDD / 2, TA = +25°C, unless otherwise noted.) SLEW RATE vs. SUPPLY VOLTAGE MAX9910 toc10 OUTPUT-SWING HIGH vs. TEMPERATURE MAX9910 toc11 OUTPUT-SWING LOW vs. TEMPERATURE VOL = VOUT - VSS RL TO VDD RL = 1kΩ MAX9910 toc12 0.6 0.5 0.4 SLEW RATE (V/µS) 0.3 0.2 0.1 0 -0.1 -0.2 -0.3 -0.4 1.8 2.6 3.4 4.2 5.0 1000 RL = 1kΩ OUTPUT VOLTAGE SWING (mV) 10000 OUTPUT VOLTAGE SWING (mV) 1000 100 RL = 5kΩ 100 RL = 5 k Ω 10 RL = 100kΩ 10 RL = 100kΩ RL TO VSS VOH = VDD - VOUT 1 1 -40 -15 10 35 60 85 -40 -15 10 35 60 85 TEMPERATURE (°C) TEMPERATURE (°C) 5.5 SUPPLY VOLTAGE (V) OPEN-LOOP GAIN vs. TEMPERATURE (RL TO VSS) RL = 100kΩ MAX9910 toc13 OPEN-LOOP GAIN vs. TEMPERATURE (RL TO VDD) MAX9910 toc14 GAIN AND PHASE vs. FREQUENCY (RL = ∞, CLOAD = 15pF) 80 GAIN 60 40 GAIN (dB) 20 0 -20 -40 -60 -80 1 10 100 1k 10k 100k 1M PHASE MAX9910 toc15 140 120 100 AVOL (dB) 80 60 40 20 0 -40 -15 10 140 120 100 AVOL (dB) RL = 100kΩ AV = 1000V/V 180 135 90 45 0 -45 -90 -135 -180 PHASE (DEGREES) RL = 5kΩ RL = 5kΩ RL = 1kΩ 80 60 40 20 0 RL = 1kΩ 35 60 85 -40 -15 10 35 60 85 TEMPERATURE (°C) TEMPERATURE (°C) FREQUENCY (Hz) GAIN AND PHASE vs. FREQUENCY (RL = 5kΩ, CLOAD = 100pF) 100 80 GAIN 60 40 GAIN (dB) 20 0 -20 -40 -60 -80 -100 1 10 100 1k 10k 100k 1M FREQUENCY (Hz) PHASE MAX9910 toc16 CROSSTALK vs. FREQUENCY MAX9912/MAX9913 -20 PHASE (DEGREES) CROSSTALK (dB) -40 -60 -80 -100 -85 -120 10 100 1k FREQUENCY (Hz) 10k 100k -95 10 MAX9910 toc17 TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY -15 -25 -35 THD+N (dB) -45 -55 -65 -75 VOUT = 2VP-P MAX9910 toc18 AV = 1000V/V 225 180 135 90 45 0 -45 -90 -135 -180 -225 0 -5 100 1k 10k FREQUENCY (Hz) 6 _______________________________________________________________________________________ 200kHz, 4µA, Rail-to-Rail I/O Op Amps with Shutdown MAX9910–MAX9913 Typical Operating Characteristics (continued) (VDD = 3V, VSS = VCM = 0V, RL to VDD / 2, TA = +25°C, unless otherwise noted.) VOLTAGE-NOISE DENSITY vs. FREQUENCY MAX9910 toc19 RESISTOR ISOLATION vs. CAPACITIVE LOAD 7000 6000 RISO (Ω) 5000 4000 3000 2000 1000 OUTPUT 500mV/div AV = 1V/V FOR AV = 10V/V NO RISO NEEDED MAX9910 toc20 POWER-UP SETTLING TIME MAX9910 toc21 10,000 8000 VOLTAGE NOISE (nV/√Hz) VDD 1V/div 1000 100 1 10 100 1k 10k 100k FREQUENCY (Hz) 0 10 100 CLOAD (pF) 1000 10,000 500ns/div IN+ = VDD / 2 AV = 1V/V SHUTDOWN RESPONSE MAX9910 toc22 SMALL-SIGNAL PULSE RESPONSE (CLOAD = 15pF) MAX9910 toc23 SMALL-SIGNAL PULSE RESPONSE (CLOAD = 100pF) MAX9910 toc24 IN+ = VDD / 2 AV = 1V/V 3V SHDN 0V IN+ 50mV/div AV = 1V/V IN+ 5mV/div AV = 10V/V 1.5V OUTPUT 0V 20µs/div 10µs/div 20µs/div OUTPUT 50mV/div OUTPUT 50mV/div LARGE-SIGNAL PULSE RESPONSE (CLOAD = 15pF) MAX9910 toc25 LARGE-SIGNAL PULSE RESPONSE (CLOAD = 100pF) MAX9910 toc26 AV = 1V/V IN+ 1V/div IN+ 100mV/div AV = 10V/V OUTPUT 1V/div OUTPUT 1V/div 10µs/div 100µs/div _______________________________________________________________________________________ 7 200kHz, 4µA, Rail-to-Rail I/O Op Amps with Shutdown MAX9910–MAX9913 Typical Operating Characteristics (continued) (VDD = 3V, VSS = VCM = 0V, RL to VDD / 2, TA = +25°C, unless otherwise noted.) SMALL-SIGNAL GAIN vs. FREQUENCY MAX9910 toc27 LARGE-SIGNAL GAIN vs. FREQUENCY 3 2 1 GAIN (dB) 0 -1 -2 -3 -4 1 10 FREQUENCY (kHz) 100 AV = +1V/V VOUT = 2VP-P CLOAD = 15pF MAX9910 toc28 MAX9910 toc30 10 8 6 4 GAIN (dB) 2 0 -2 -4 -6 -8 -10 1 AV = +1V/V VOUT = 100mVP-P CLOAD = 15pF 4 10 100 1000 FREQUENCY (kHz) PERCENT OVERSHOOT vs. CAPACITIVE LOAD AV = 1V/V 3.5 3.0 OVERSHOOT (%) 2.5 2.0 1.5 1.0 0.5 0 0 20 40 60 80 100 RL = 10kΩ OUTPUT 50mV/div RL = 100kΩ RL = 1 M Ω MAX9910 toc29 OUTPUT WAVEFORM WITH RISO (CLOAD = 100pF, RISO = 6.2kΩ) AV = 1V/V IN+ 50mV/div 4.0 20µs/div CLOAD (pF) OUTPUT WAVEFORM WITHOUT RISO (CLOAD = 100pF) MAX9910 toc31 AV = 1V/V IN+ 50mV/div OUTPUT 50mV/div 20µs/div 8 _______________________________________________________________________________________ 200kHz, 4µA, Rail-to-Rail I/O Op Amps with Shutdown Pin Description PIN MAX9911 (WLP) A1 A2 B1 C1 B2 C2 — — — — — — — — MAX9910 1 2 3 4 5 — — — — — — — — — MAX9911 (SC70) 1 2 3 4 6 5 — — — — — — — — MAX9912 — 4 — — 8 — 1 2 3 — — 5 6 7 MAX9913 — 4 — — 10 — 1 2 3 5 6 7 8 9 NAME IN+ VSS INOUT VDD SHDN OUTA INAINA+ SHDNA SHDNB INB+ INBOUTB FUNCTION Noninverting Amplifier Input Negative Supply Voltage Inverting Amplifier Input Amplifier Output Positive Supply Voltage Shutdown Amplifier Output Channel A Inverting Amplifier Input Channel A Noninverting Amplifier Input Channel A Shutdown Channel A Shutdown Channel B Noninverting Amplifier Input Channel B Inverting Amplifier Input Channel B Amplifier Output Channel B MAX9910–MAX9913 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 MAX9910– MAX9913 are an excellent choice for precision or general-purpose, low-current, low-voltage, battery-powered applications. These CMOS devices consume an ultralow 4µA (typ) supply current and a 200µV (typ) offset voltage. For additional power conservation, the MAX9911/MAX9913 feature a low-power shutdown mode that reduces supply current to 1nA (typ), and puts the amplifiers’ output in a high-impedance state. These devices are 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. load. These devices can drive a 5kΩ load with swings to within 60mV of the rails. Figure 1 shows the output voltage swing of the MAX9910–MAX9913 configured as a unity-gain buffer powered from a single 3V supply. Low Input Bias Current The MAX9910–MAX9913 feature 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). Applications Information Driving Capacitive Loads The MAX9910–MAX9913 amplifiers are 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. Rail-to-Rail Inputs and Outputs All of the MAX9910–MAX9913 amplifiers have a parallelconnected 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 MAX9910–MAX9913 are capable of driving the output to within 5mV of both supply rails with a 100kΩ Power-Supply Considerations The MAX9910–MAX9913 are optimized for single 1.8V to 5.5V supply operation. A high amplifier power-supply _______________________________________________________________________________________ 9 200kHz, 4µA, Rail-to-Rail I/O Op Amps with Shutdown MAX9910–MAX9913 rejection ratio of 95dB (typ) allows the devices to be powered directly from a battery, simplifying design and extending battery life. RAIL-TO-RAIL OUTPUT VOLTAGE RANGE 3V IN_ 1V/div 0V 3V OUT_ 1V/div 0V 200µs/div Power-Up Settling Time The MAX9910–MAX9913 typically require 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 slew-rate limited. Figure 3 shows the MAX991_ 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). Shutdown Mode The MAX9911/MAX9913 feature active-low shutdown inputs. The MAX9911/MAX9913 enter shutdown in 2µs (typ) and exit in 30µs (typ). The amplifiers’ outputs are in a high-impedance state in shutdown mode. Drive SHDN low to enter shutdown. Drive S HDN high to enable the amplifier. The MAX9913 dual-amplifier features separate shutdown inputs. Shut down both amplifiers for the lowest quiescent current. Figure 1. Rail-to-Rail Output Voltage Range RISO MAX9910– MAX9913 Power-Supply Bypassing and Layout 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. RL CL AV = RL ≈ 1V/V RL + RISO Figure 2. Using a Resistor to Isolate a Capacitive Load from the Op Amp 5.5V 0V 100kΩ INVDD MAX991_ OUT IN+ VSS 100kΩ Figure 3. Power-Up Test Configuration 10 ______________________________________________________________________________________ 200kHz, 4µA, Rail-to-Rail I/O Op Amps with Shutdown Pin Configurations TOP VIEW MAX9911 IN+ A1 INB1 OUT C1 VSS A2 VDD B2 SHDN C2 IN- 3 4 OUT IN- 3 4 OUT VSS 2 VSS 2 5 SHDN IN+ 1 MAX9910–MAX9913 MAX9910 5 VDD IN+ 1 MAX9911 SHDN 6 VDD WLP BUMP SIDE DOWN MAX9912 OUTA 1 8 7 6 5 VDD OUTB INBINB+ SC70 SC70 MAX9913 OUTA INA1 2 10 VDD 9 8 SHDNA SHDNB 7 6 OUTB INBINB+ SHDNB INA- 2 INA+ 3 VSS 4 INA+ 3 VSS 4 SHDNA 5 SOT23 µMAX Chip Information PROCESS: BiCMOS ______________________________________________________________________________________ 11 200kHz, 4µA, Rail-to-Rail I/O Op Amps with Shutdown MAX9910–MAX9913 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 5 SC70 6 SC70 6 WLP 8 SOT23 10 µMAX PACKAGE CODE X5+1 X6SN+1 W61B1+1 K8+5 U10+2 OUTLINE NO. 21-0076 21-0077 21-0217 21-0078 21-0061 LAND PATTERN NO. 90-0188 90-0189 — 90-0176 90-0330 SC70, 5L.EPS PACKAGE OUTLINE, 5L SC70 21-0076 E 1 1 12 ______________________________________________________________________________________ 200kHz, 4µA, Rail-to-Rail I/O Op Amps with Shutdown Package Information (continued) 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. MAX9910–MAX9913 ______________________________________________________________________________________ 13 200kHz, 4µA, Rail-to-Rail I/O Op Amps with Shutdown MAX9910–MAX9913 Package Information (continued) 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. 14 ______________________________________________________________________________________ 200kHz, 4µA, Rail-to-Rail I/O Op Amps with Shutdown Package Information (continued) 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. MAX9910–MAX9913 MARKING 0 0 PACKAGE OUTLINE, SOT-23, 8L BODY 21-0078 J 1 1 ______________________________________________________________________________________ 15 200kHz, 4µA, Rail-to-Rail I/O Op Amps with Shutdown MAX9910–MAX9913 Package Information (continued) 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. 10LUMAX.EPS α α 16 ______________________________________________________________________________________ 200kHz, 4µA, Rail-to-Rail I/O Op Amps with Shutdown Revision History REVISION NUMBER 2 REVISION DATE 10/10 Added WLP package DESCRIPTION PAGES CHANGED 1, 2, 9, 11 MAX9910–MAX9913 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 ____________________ 17 © 2010 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.