19-3406; Rev 1; 10/05 200kHz, 4µA, Rail-to-Rail I/O Op Amps with Shutdown 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/MAX9911 are available in 5-pin and 6-pin SC70 packages, respectively. The MAX9912 is available in an 8-pin SOT23 package, and the MAX9913 is available in a 10-pin µMAX® package. All devices are specified over the -40°C to +85°C extended operating temperature range. Features ♦ 200kHz GBW ♦ 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 (MAX9911/MAX9913) ♦ Unity-Gain Stable ♦ Available in Tiny SC70, SOT23, and µMAX Packages Applications Ordering Information Portable Medical Devices Portable Test Equipment Laptops Data-Acquisition Equipment Typical Operating Circuit 1.8V TO 5.5V OUTA VDD INA- OUTB INA+ INB- VOUT 25kΩ VMID INB+ VSS PART TEMP RANGE PINPACKAGE MAX9910EXK+T -40°C to +85°C 5 SC70-5 AGA MAX9910EXK-T -40°C to +85°C 5 SC70-5 AGA MAX9911EXT+T -40°C to +85°C 6 SC70-6 ACA MAX9911EXT-T -40°C to +85°C 6 SC70-6 ACA MAX9912EKA+T -40°C to +85°C 8 SOT23-8 AEJY MAX9912EKA-T -40°C to +85°C 8 SOT23-8 AEJY MAX9913EUB -40°C to +85°C 10 µMAX — MAX9913EUB+ -40°C to +85°C 10 µMAX — +Denotes lead-free package. VMID + VBIAS MAX9913 ON TOP MARK Selector Guide ON SHDNB SHDNA OFF OFF PART AMPLIFIERS PER PACKAGE SHUTDOWN MODE RE MAX9910EXK-T 1 No GLUCOSE WE CE SENSOR MAX9911EXT-T 1 Yes MAX9912EKA-T 2 No MAX9913EUB 2 Yes 1MΩ THREE ELECTRODE GLUCOSE METER APPLICATION WITH SHUTDOWN µMAX is a registered trademark of Maxim Integrated Products, Inc. ________________________________________________________________ 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 MAX9910–MAX9913 General Description MAX9910–MAX9913 200kHz, 4µA, Rail-to-Rail I/O Op Amps with Shutdown 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-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 (soldering, 10s) ............................... +300°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 IDD(SHDN_) Input Offset Current TYP 1.8 VDD = 1.8V 4 VDD = 5.5V 4 VDD = 1.8V 7 VDD = 5.5V MAX UNITS 5.5 V 5.0 µA 7 9 SHDN_ = GND, MAX9911/MAX9913 0.001 0.5 µA ±0.2 ±1 mV MAX9912/MAX9913 ±250 VOS Input-Offset-Voltage Matching Input Bias Current MIN µV IB (Note 2) ±1 ±10 pA IOS (Note 2) ±1 ±10 pA Common mode 1 Differential mode, -1mV < VIN < +1mV 10 Input Resistance RIN Input Common-Mode Range VCM 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 Open-Loop Gain Output-Voltage-Swing High Output-Voltage-Swing Low AVOL VOH VOL Channel-to-Channel Isolation CHISO Output Short-Circuit Current IOUT(SC) 2 VDD - VOUT VOUT - VSS dB 110 RL = 100kΩ 2.5 5 RL = 5kΩ 50 70 RL = 1kΩ 250 RL = 100kΩ 2.5 5 RL = 5kΩ 50 70 RL = 1kΩ 250 Specified at DC, MAX9912/MAX9913 mV mV 100 dB ±15 mA _______________________________________________________________________________________ 200kHz, 4µA, Rail-to-Rail I/O Op Amps with Shutdown (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 TYP MAX 0.4 VDD = 3.6V to 5.5V, MAX9911/MAX9913 0.8 VDD = 1.8V to 3.6V, MAX9911/MAX9913 1.4 VDD = 3.6V to 5.5V, MAX9911/MAX9913 2 IIL SHDN_ = VSS, MAX9911/MAX9913 (Note 2) IIH SHDN_ = VDD , MAX9911/MAX9913 IOUT(SHDN_) MIN VDD = 1.8V to 3.6V, MAX9911/MAX9913 V V 1 500 SHDN_ = VSS, VOUT = 0V to VDD, MAX9911/MAX9913 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 Supply Voltage Range Supply Current SYMBOL VDD IDD Shutdown Supply Current Input Offset Voltage IDD(SHDN_) CONDITIONS Guaranteed by PSRR test MAX9910/MAX9911 MAX9912/MAX9913 MIN TYP 1.8 TCVOS UNITS 5.5 V 5.5 VDD = 5.5V 11 SHDN_ = GND, MAX9911/MAX9913 VOS Input-Offset-Voltage Temperature Coefficient MAX ±5 µA 1 µA ±5 mV µV/°C _______________________________________________________________________________________ 3 MAX9910–MAX9913 ELECTRICAL CHARACTERISTICS (continued) MAX9910–MAX9913 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 = -40°C to +85°C, unless otherwise noted.) (Note 1) PARAMETER Input Bias Current Input Offset Current Input Common-Mode Range SYMBOL CONDITIONS MIN TYP IB IOS VCM Guaranteed by CMRR test VSS 0.05 MAX UNITS ±30 pA ±20 pA VDD + 0.05 V 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, MAX9911/MAX9913 1.4 VDD = 3.6V to 5.5V, MAX9911/MAX9913 2 mV V V IIL SHDN_ = VSS, MAX9911/MAX9913 5 nA IIH SHDN_ = VDD, MAX9911/MAX9913 1000 nA 1000 nA 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 mV _______________________________________________________________________________________ 200kHz, 4µA, Rail-to-Rail I/O Op Amps with Shutdown SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE 6 TA = +85°C TA = +25°C 5 TA = +25°C SINGLE TA = -40°C 3 TA = +85°C 2 6 2.6 3.4 4.2 5.0 TA = +25°C 0 -250 4 -500 2 -750 -40 5.5 TA = +85°C -1000 -15 10 35 60 85 0 0.5 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 7 MAX9910 toc04 150 100 6 5 50 5 4 3 4 -50 -100 2 IB- 3 1 IB (pA) IB (pA) 0 2 1 -150 0 -1 0 -200 -2 IB+ -250 -1 -300 -2 -4 -350 -3 -5 -15 10 35 60 -3 -40 85 -15 10 35 60 85 -0.5 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 -20 0 MAX9910 toc08 140 MAX9910 toc07 0 120 -10 -20 100 -80 CMRR (dB) CMRR (dB) -60 3.5 -30 -40 PSRR (dB) MAX9910 toc03 250 VSUPPLY (V) 200 -40 TA = -40°C MAX9910 toc06 1.8 VOS (µV) 500 8 0 1 750 MAX9910 toc09 4 10 MAX9910 toc05 ICC (µA) 7 1000 VOS (µV) TA = -40°C DUAL INPUT OFFSET VOLTAGE vs. INPUT COMMON-MODE VOLTAGE MAX9910 toc02 8 12 SHUTDOWN SUPPLY CURRENT (nA) 9 MAX9910 toc01 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 MAX9910–MAX9913 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.) 0.1 0 -0.1 -0.2 100 RL = 5kΩ 10 RL = 100kΩ -0.4 3.4 4.2 5.0 RL = 100kΩ 10 5.5 -40 -15 10 35 60 -40 85 -15 10 35 60 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) 140 MAX9910 toc13 120 RL = 100kΩ 120 100 AVOL (dB) RL = 5kΩ 80 RL = 1kΩ 60 80 RL = 1kΩ 60 60 135 40 90 -45 -40 -90 -60 -135 20 0 -80 10 35 60 85 -40 -15 10 35 60 0 -20 20 -15 PHASE 0 40 -40 45 20 40 0 -180 1 85 10 100 1k 10k 100k TEMPERATURE (°C) TEMPERATURE (°C) FREQUENCY (Hz) GAIN AND PHASE vs. FREQUENCY (RL = 5kΩ, CLOAD = 100pF) CROSSTALK vs. FREQUENCY TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY 225 40 90 20 45 PHASE 0 -20 -45 -40 -90 -60 -135 -80 -180 -225 -100 100 1k 10k FREQUENCY (Hz) 100k 1M -5 -20 -15 -25 -35 -40 THD+N (dB) 135 10 MAX9912/MAX9913 CROSSTALK (dB) GAIN 60 1 0 180 PHASE (DEGREES) 80 1M MAX9910 toc18 AV = 1000V/V MAX9910 toc17 MAX9910 toc16 100 180 AV = 1000V/V GAIN RL = 5kΩ 100 MAX9910 toc15 80 GAIN (dB) RL = 100kΩ 0 85 SUPPLY VOLTAGE (V) 140 GAIN (dB) RL = 5kΩ 1 1 2.6 100 RL TO VSS VOH = VDD - VOUT -0.3 1.8 RL = 1kΩ -60 -45 -55 -65 -80 -75 VOUT = 2VP-P -100 -85 -95 -120 10 100 1k FREQUENCY (Hz) 10k 100k 10 100 1k FREQUENCY (Hz) _______________________________________________________________________________________ 10k PHASE (DEGREES) 0.2 VOL = VOUT - VSS RL TO VDD 1000 MAX9910 toc14 SLEW RATE (V/µS) 0.3 10000 MAX9910 toc12 0.4 RL = 1kΩ OUTPUT VOLTAGE SWING (mV) 0.5 MAX9910 toc11 1000 MAX9910 toc10 0.6 6 OUTPUT-SWING LOW vs. TEMPERATURE OUTPUT-SWING HIGH vs. TEMPERATURE OUTPUT VOLTAGE SWING (mV) SLEW RATE vs. SUPPLY VOLTAGE AVOL (dB) MAX9910–MAX9913 200kHz, 4µA, Rail-to-Rail I/O Op Amps with Shutdown 200kHz, 4µA, Rail-to-Rail I/O Op Amps with Shutdown RESISTOR ISOLATION vs. CAPACITIVE LOAD VOLTAGE-NOISE DENSITY vs. FREQUENCY POWER-UP SETTLING TIME MAX9910 toc19 AV = 1V/V FOR AV = 10V/V NO RISO NEEDED 7000 MAX9910 toc20 MAX9910 toc21 8000 6000 RISO (Ω) VOLTAGE NOISE (nV/√Hz) 10,000 1000 VDD 1V/div 5000 4000 3000 OUTPUT 500mV/div 2000 1000 IN+ = VDD / 2 AV = 1V/V 0 100 1 10 100 1k 10k 10 100k 100 500ns/div 10,000 1000 FREQUENCY (Hz) CLOAD (pF) SHUTDOWN RESPONSE SMALL-SIGNAL PULSE RESPONSE (CLOAD = 15pF) SMALL-SIGNAL PULSE RESPONSE (CLOAD = 100pF) MAX9910 toc23 MAX9910 toc22 SHDN MAX9910 toc24 AV = 10V/V AV = 1V/V IN+ = VDD / 2 AV = 1V/V 3V 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) MAX9910 toc25 MAX9910 toc26 AV = 1V/V AV = 10V/V IN+ 1V/div IN+ 100mV/div OUTPUT 1V/div OUTPUT 1V/div 10µs/div 100µs/div _______________________________________________________________________________________ 7 MAX9910–MAX9913 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 MAX9910 toc27 10 MAX9910 toc28 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 1 10 1 1000 100 10 100 FREQUENCY (kHz) FREQUENCY (kHz) PERCENT OVERSHOOT vs. CAPACITIVE LOAD OUTPUT WAVEFORM WITH RISO (CLOAD = 100pF, RISO = 6.2kΩ) MAX9910 toc30 MAX9910 toc29 4.0 AV = 1V/V 3.5 RL = 1MΩ AV = 1V/V IN+ 50mV/div 3.0 OVERSHOOT (%) MAX9910–MAX9913 200kHz, 4µA, Rail-to-Rail I/O Op Amps with Shutdown 2.5 RL = 100kΩ 2.0 1.5 OUTPUT 50mV/div 1.0 RL = 10kΩ 0.5 0 0 20 40 60 80 100 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 NAME FUNCTION MAX9910 MAX9911 MAX9912 MAX9913 1 1 — — IN+ Noninverting Amplifier Input 2 2 4 4 VSS Negative Supply Voltage 3 3 — — IN- Inverting Amplifier Input 4 4 — — OUT Amplifier Output 5 6 8 10 VDD Positive Supply Voltage — 5 — — SHDN Shutdown — — 1 1 OUTA Amplifier Output Channel A — — 2 2 INA- Inverting Amplifier Input Channel A — — 3 3 INA+ Noninverting Amplifier Input Channel A — — — 5 SHDNA Shutdown Channel A — — — 6 SHDNB Shutdown Channel B — — 5 7 INB+ Noninverting Amplifier Input Channel B — — 6 8 INB- Inverting Amplifier Input Channel B — — 7 9 OUTB 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. 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. Amplifier Output Channel B The MAX9910–MAX9913 are capable of driving the output to within 5mV of both supply rails with a 100kΩ 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. _______________________________________________________________________________________ 9 MAX9910–MAX9913 Pin Description MAX9910–MAX9913 200kHz, 4µA, Rail-to-Rail I/O Op Amps with Shutdown Power-Supply Considerations The MAX9910–MAX9913 are 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. 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). RAIL-TO-RAIL OUTPUT VOLTAGE RANGE 3V IN_ 1V/div 0V 3V OUT_ 1V/div 0V 200µs/div Figure 1. Rail-to-Rail Output Voltage Range 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 SHDN high to enable the amplifier. The MAX9913 dual-amplifier features separate shutdown inputs. Shut down both amplifiers for the lowest quiescent current. RISO MAX9910– MAX9913 RL 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. AV = RL ≈ 1V/V RL + RISO Figure 2. Using a Resistor to Isolate a Capacitive Load from the Op Amp 5.5V 0V IN- VDD 100kΩ MAX991_ IN+ VSS 100kΩ Figure 3. Power-Up Test Configuration 10 CL ______________________________________________________________________________________ OUT 200kHz, 4µA, Rail-to-Rail I/O Op Amps with Shutdown TOP VIEW MAX9910 IN+ 1 MAX9911 5 VDD VSS 2 IN- 3 OUTA OUT 4 IN+ 1 SHDN 6 VDD VSS 2 5 SHDN IN- 3 4 OUT SC70 SC70 MAX9912 MAX9913 1 8 VDD INA- 2 7 OUTB INA+ 3 6 INB- VSS 4 5 SOT23 INB+ OUTA 1 10 VDD INA- 2 9 OUTB INA+ 3 8 INB- 7 INB+ 6 SHDNB VSS 4 SHDNA 5 SHDNA SHDNB µMAX Chip Information MAX9910 TRANSISTOR COUNT: 180 MAX9911 TRANSISTOR COUNT: 180 MAX9912 TRANSISTOR COUNT: 292 MAX9913 TRANSISTOR COUNT: 292 PROCESS: BiCMOS ______________________________________________________________________________________ 11 MAX9910–MAX9913 Pin Configurations 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.) SC70, 5L.EPS MAX9910–MAX9913 200kHz, 4µA, Rail-to-Rail I/O Op Amps with Shutdown PACKAGE OUTLINE, 5L SC70 21-0076 12 ______________________________________________________________________________________ C 1 1 200kHz, 4µA, Rail-to-Rail I/O Op Amps with Shutdown SC70, 6L.EPS PACKAGE OUTLINE, 6L SC70 21-0077 C 1 1 ______________________________________________________________________________________ 13 MAX9910–MAX9913 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.) SEE DETAIL "A" CL CL E MIN MAX A A1 A2 0.90 0.00 0.90 1.45 0.15 1.30 b 0.28 0.45 C D E 0.09 2.80 2.60 0.20 3.00 3.00 SYMBOL e b CL E1 E1 1.50 L 0.30 L2 e PIN 1 I.D. DOT (SEE NOTE 6) SOT23, 8L .EPS MAX9910–MAX9913 200kHz, 4µA, Rail-to-Rail I/O Op Amps with Shutdown 1.75 0.60 0.25 BSC. 0.65 BSC. 1.95 REF. 0∞ 8∞ e1 0 e1 D C CL L2 A A2 GAUGE PLANE A1 SEATING PLANE C 0 L NOTE: 1. ALL DIMENSIONS ARE IN MILLIMETERS. 2. FOOT LENGTH MEASURED FROM LEAD TIP TO UPPER RADIUS OF HEEL OF THE LEAD PARALLEL TO SEATING PLANE C. 3. PACKAGE OUTLINE EXCLUSIVE OF MOLD FLASH & METAL BURR. 4. PACKAGE OUTLINE INCLUSIVE OF SOLDER PLATING. DETAIL "A" 5. COPLANARITY 4 MILS. MAX. 6. PIN 1 I.D. DOT IS 0.3 MM ÿ MIN. LOCATED ABOVE PIN 1. 7. SOLDER THICKNESS MEASURED AT FLAT SECTION OF LEAD BETWEEN 0.08mm AND 0.15mm FROM LEAD TIP. 8. MEETS JEDEC MO178. PROPRIETARY INFORMATION TITLE: PACKAGE OUTLINE, SOT-23, 8L BODY APPROVAL DOCUMENT CONTROL NO. 21-0078 14 ______________________________________________________________________________________ REV. D 1 1 200kHz, 4µA, Rail-to-Rail I/O Op Amps with Shutdown 10LUMAX.EPS e 4X S 10 10 INCHES H Ø0.50±0.1 0.6±0.1 1 1 0.6±0.1 BOTTOM VIEW TOP VIEW D2 MILLIMETERS MAX DIM MIN 0.043 A 0.006 A1 0.002 A2 0.030 0.037 0.120 D1 0.116 0.118 D2 0.114 0.120 E1 0.116 0.118 E2 0.114 0.199 H 0.187 L 0.0157 0.0275 L1 0.037 REF 0.0106 b 0.007 e 0.0197 BSC c 0.0035 0.0078 0.0196 REF S α 0° 6° MAX MIN 1.10 0.05 0.15 0.75 0.95 2.95 3.05 2.89 3.00 2.95 3.05 2.89 3.00 4.75 5.05 0.40 0.70 0.940 REF 0.177 0.270 0.500 BSC 0.090 0.200 0.498 REF 0° 6° E2 GAGE PLANE A2 c A b A1 α E1 D1 L L1 FRONT VIEW SIDE VIEW PROPRIETARY INFORMATION TITLE: PACKAGE OUTLINE, 10L uMAX/uSOP APPROVAL DOCUMENT CONTROL NO. 21-0061 REV. I 1 1 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 ____________________ 15 © 2005 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products, Inc. MAX9910–MAX9913 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.)