MAX9917EUB

19-3407; Rev 1; 10/05 1MHz, 20µA, Rail-to-Rail I/O Op Amps with Shutdown General Description The single MAX9914/MAX9915 and dual MAX9916/ MAX9917 operational amplifiers feature maximized ratio of gain bandwidth 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 1pA input bias current, rail-to-rail inputs and outputs, low 20µA supply current, and operate from a single 1.8V to 5.5V supply. For additional power conservation, the MAX9915/MAX9917 feature a low-power shutdown mode that reduces supply current to 1nA, and puts the amplifier outputs in a high-impedance state. These devices are unity-gain stable with a 1MHz gain-bandwidth product. The MAX9914 and MAX9915 are available in 5-pin and 6-pin SC70 packages, respectively. The MAX9916 is available in an 8-pin SOT23 package, and the MAX9917 in a 10-pin µMAX® package. All devices are specified over the -40°C to +85°C extended operating temperature range. ♦ High 1MHz GBW ♦ Ultra-Low 20µA 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 (MAX9915/MAX9917) ♦ Unity-Gain Stable ♦ Available in Tiny SC70, SOT23, and µMAX Packages Features MAX9914–MAX9917 Applications Portable Medical Devices Portable Test Equipment RF Tags Laptops Data-Acquisition Equipment PART MAX9914EXK+T MAX9914EXK-T MAX9915EXT+T MAX9915EXT-T MAX9916EKA+T MAX9916EKA-T MAX9917EUB MAX9917EUB+ MAX9916 IN+ INA+ OUTA OUT R1 47kΩ INAGAIN = RG* ININB+ OUTB R3 10kΩ INBVSS R2 10kΩ (R1 + R2 + R3 + R4) (R2 + R3) 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 PINPACKAGE 5 SC70-5 5 SC70-5 6 SC70-6 6 SC70-6 8 SOT23-8 8 SOT23-8 10 µMAX 10 µMAX TOP MARK AGB AGB ACB ACB AEJZ AEJZ — — Typical Operating Circuit 3V VDD +Denotes lead-free package. Selector Guide PART AMPLIFIERS PER PACKAGE 1 1 2 2 SHUTDOWN PACKAGE MODE No Yes No Yes 5 SC70-5 6 SC70-6 8 SOT23-8 10 µMAX FOR R1 = R4 AND R2 = R3 GAIN = 1 + R4 R2 MAX9914EXK-T R4 47kΩ MAX9915EXT-T MAX9916EKA-T MAX9917EUB MICROPOWER, TWO-OP-AMP INSTRUMENTATION AMPLIFIER *OPTIONAL INPUT RESISTOR RG, IS FOR GAIN ADJUSTMENT µMAX is a registered trademark of Maxim Integrated Products, Inc. ________________________________________________________________ Maxim Integrated Products 1 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. 1MHz, 20µA, Rail-to-Rail I/O Op Amps with Shutdown MAX9914–MAX9917 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 MAX9914/MAX9915 Supply Current IDD MAX9916/MAX9917 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 MAX9916/MAX9917 (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, MAX9916/MAX9917 VSS 0.1 70 65 95 95 80 85 120 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 20 20 40 40 0.001 ±0.2 ±250 ±1 ±1 1 10 VDD + 0.1 ±10 ±10 50 0.5 ±1 µA mV µV pA pA GΩ V dB dB 25 µA TYP MAX 5.5 UNITS V SHDN_ = GND, MAX9915/MAX9917 Open-Loop Gain AVOL 2 _______________________________________________________________________________________ 1MHz, 20µA, 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 Phase Margin Gain Margin 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 CL = 15pF CL = 15pF SYMBOL VIL VIH IIL IIH IOUT(SHDN_) CONDITIONS VDD = 1.8V to 3.6V, MAX9915/MAX9917 VDD = 3.6V to 5.5V, MAX9915/MAX9917 VDD = 1.8V to 3.6V, MAX9915/MAX9917 VDD = 3.6V to 5.5V, MAX9915/MAX9917 SHDN_ = VSS, MAX9915/MAX9917 (Note 2) SHDN_ = VDD, MAX9915/MAX9917 SHDN_ = VSS, VOUT = 0V to VDD, MAX9915/MAX9917 1 1 45 10 0.5 30 100 100 100 160 0.001 3.5 2 10 2 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 MHz degrees dB V/µs MAX9914–MAX9917 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 MAX9914/MAX9915 MAX9916/MAX9917 VDD = 5.5V MIN 1.8 TYP MAX 5.5 29 60 1 ±3 UNITS V µA µA mV µV/°C SHDN_ = GND, MAX9915/MAX9917 _______________________________________________________________________________________ 3 1MHz, 20µA, Rail-to-Rail I/O Op Amps with Shutdown MAX9914–MAX9917 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 RL = 100kΩ RL = 5kΩ RL = 100kΩ RL = 5kΩ VSS 0.05 60 60 85 dB 85 6 90 5 90 0.4 0.8 1.4 2 5 1000 1000 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 VDD = 1.8V to 3.6V, MAX9915/MAX9917 VDD = 3.6V to 5.5V, MAX9915/MAX9917 VDD = 1.8V to 3.6V, MAX9915/MAX9917 VDD = 3.6V to 5.5V, MAX9915/MAX9917 SHDN_ = VSS, MAX9915/MAX9917 SHDN_ = VDD, MAX9915/MAX9917 SHDN_ = VSS, VOUT = 0V to VDD, IOUT(SHDN_) MAX9915/MAX9917 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 _______________________________________________________________________________________ 1MHz, 20µA, Rail-to-Rail I/O Op Amps with Shutdown MAX9914–MAX9917 Typical Operating Characteristics (VDD = 3V, VSS = VCM = 0V, RL to VDD / 2, TA = +25°C, unless otherwise noted.) SUPPLY CURRENT vs. SUPPLY VOLTAGE MAX9914 toc01 SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE 10 8 6 4 2 0 -2 -4 -6 VOS (µV) MAX9914 toc02 INPUT OFFSET VOLTAGE vs. INPUT COMMON-MODE VOLTAGE 750 500 250 0 -250 -500 -750 -1000 0 0.5 1.0 1.5 VCM (V) 2.0 2.5 3.0 TA = -40°C TA = +25°C TA = +85°C MAX9914 toc03 50 45 40 35 ICC (µA) 30 25 20 15 10 5 0 1.8 2.6 3.3 4.1 4.8 SINGLE TA = +25°C TA = -40°C TA = +85°C TA = +25°C TA = -40°C TA = +85°C DUAL 12 SHUTDOWN SUPPLY CURRENT (nA) 1000 5.5 -40 -15 10 35 60 85 VSUPPLY (V) TEMPERATURE (°C) INPUT OFFSET VOLTAGE vs. TEMPERATURE MAX9914 toc04 INPUT BIAS CURRENT vs. TEMPERATURE MAX9914 toc05 INPUT BIAS CURRENT vs. INPUT COMMON-MODE VOLTAGE 4 3 2 1 IB (pA) 0 -1 -2 -3 -4 -5 MAX9914 toc06 0 -20 -40 -60 VOS (µV) 7 6 5 4 IB (pA) 3 2 1 0 -1 -2 -3 I B+ IB- 5 -80 -100 -120 -140 -160 -180 -200 -40 -15 10 35 60 85 TEMPERATURE (°C) -40 -15 10 35 60 85 -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 MAX9914 toc07 COMMON-MODE REJECTION RATIO vs. TEMPERATURE MAX9914 toc08 COMMON-MODE REJECTION RATIO vs. FREQUENCY -10 -20 -30 CMRR (dB) -40 -50 -60 -70 -80 MAX9914 toc09 0 -10 -20 -30 PSRR (dB) -40 -50 -60 -70 -80 -90 -100 0.1 1 10 100 1k 140 120 100 CMRR (dB) 80 60 40 20 0 0 -90 -100 -40 -15 10 35 60 85 1 10 100 1k 10k 100k TEMPERATURE (°C) FREQUENCY (Hz) 10k FREQUENCY (Hz) _______________________________________________________________________________________ 5 1MHz, 20µA, Rail-to-Rail I/O Op Amps with Shutdown MAX9914–MAX9917 Typical Operating Characteristics (continued) (VDD = 3V, VSS = VCM = 0V, RL to VDD / 2, TA = +25°C, unless otherwise noted.) OUTPUT-SWING HIGH vs. TEMPERATURE MAX9914 toc11 MAX9914 toc10 SLEW RATE vs. SUPPLY VOLTAGE 3.5 3.0 2.5 SLEW RATE (V/µs) 2.0 1.5 1.0 0.5 0 -0.5 -1.0 -1.5 1.8 2.8 3.8 4.8 5.5 SUPPLY VOLTAGE (V) 1 -40 1000 OUTPUT-SWING LOW vs. TEMPERATURE RL = 1kΩ MAX9914 toc12 1000 OUTPUT VOLTAGE SWING (mV) RL = 1kΩ OUTPUT VOLTAGE SWING (mV) 100 RL = 5kΩ 100 RL = 5kΩ 10 RL = 100kΩ 10 RL = 100kΩ RL TO VSS VOH = VDD - VOUT -15 10 35 60 85 TEMPERATURE (°C) 1 -40 -15 10 35 RL TO VDD VOL = VOUT - VSS 60 85 TEMPERATURE (°C) OPEN-LOOP GAIN vs. TEMPERATURE (RL TO VSS) MAX9914 toc13 OPEN-LOOP GAIN vs. TEMPERATURE (RL TO VDD) RL = 100kΩ RL = 5kΩ MAX9914 toc14 GAIN AND PHASE vs. FREQUENCY (RL = ∞, CLOAD = 15pF) 100 80 60 40 20 0 -20 -40 -60 -80 -100 -120 PHASE GAIN MAX9914 toc15 140 120 100 AVOL (dB) 80 60 40 20 0 -40 -15 10 35 RL = 100kΩ 160 140 120 225 180 135 45 0 -45 -90 -135 -180 -225 -270 PHASE (DEGREES) 90 AV = 1000V/V RL = 1kΩ 80 60 40 20 0 RL = 1kΩ 60 85 -40 -15 10 35 60 85 GAIN (dB) AVOL (dB) RL = 5kΩ 100 1 10 100 1k 10k 100k 1M 10M TEMPERATURE (°C) TEMPERATURE (°C) FREQUENCY (Hz) GAIN AND PHASE vs. FREQUENCY (RL = 5kΩ, CLOAD = 100pF) 100 80 60 40 GAIN (dB) 20 0 -20 -40 -60 -80 -100 -120 1 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz) PHASE GAIN MAX9914 toc16 CROSSTALK vs. FREQUENCY 180 135 PHASE (DEGREES) 90 45 0 -45 -90 -135 -180 -225 -270 -120 10 100 1k FREQUENCY (Hz) 10k 100k -100 CROSSTALK (dB) -20 -40 THD+N (dB) -60 -80 MAX9916/MAX9917 MAX9914 toc17 TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 10 100 1k 10k FREQUENCY (Hz) VOUT = 2VP-P MAX9914 toc18 225 0 0 AV = 1000V/V 6 _______________________________________________________________________________________ 1MHz, 20µA, Rail-to-Rail I/O Op Amps with Shutdown MAX9914–MAX9917 Typical Operating Characteristics (continued) (VDD = 3V, VSS = VCM = 0V, RL to VDD / 2, TA = +25°C, unless otherwise noted.) VOLTAGE-NOISE DENSITY vs. FREQUENCY MAX9914 toc19 RESISTOR ISOLATION vs. CAPACITIVE LOAD AV = 1V/V FOR AV = 10V/V NO RISO NEEDED MAX9914 toc20 POWER-UP SETTLING TIME MAX9914 toc21 10,000 3000 2500 2000 RISO (Ω) VOLTAGE NOISE (nV/√Hz) VDD 1V/div 1000 1500 1000 500 OUTPUT 500mV/div IN+ = VDD / 2 AV = 1V/V 1µs/div 100 1 10 100 1k 10k 100k FREQUENCY (Hz) 0 10 100 CLOAD (pF) 1000 10,000 SHUTDOWN RESPONSE MAX9914 toc22 SMALL-SIGNAL GAIN vs. FREQUENCY MAX9914 toc23 LARGE-SIGNAL GAIN vs. FREQUENCY 3 2 GAIN (dB) 1 0 -1 -2 -3 -4 AV = 1V/V VOUT = 2VP-P CLOAD = 15pF MAX9914 toc24 10 3V 8 6 4 GAIN (dB) 0V 2 0 -2 -4 -6 0V -8 -10 1k 10k 100k FREQUENCY (Hz) 1M AV = 1V/V VOUT = 100mVP-P CLOAD = 15pF 4 IN+ = VDD / 2 AV = 1V/V SHDN = 3V 1.5V OUTPUT 20µs/div 10M 1 10 100 1000 FREQUENCY (kHz) SMALL-SIGNAL PULSE RESPONSE (CLOAD = 15pF) MAX9914 toc25 SMALL-SIGNAL PULSE RESPONSE (CLOAD = 100pF) MAX9914 toc26 AV = 1V/V IN+ 50mV/div IN+ 5mV/div AV = 10V/V OUTPUT 50mV/div OUTPUT 50mV/div 1µs/div 5µs/div _______________________________________________________________________________________ 7 1MHz, 20µA, Rail-to-Rail I/O Op Amps with Shutdown MAX9914–MAX9917 Typical Operating Characteristics (continued) (VDD = 3V, VSS = VCM = 0V, RL to VDD / 2, TA = +25°C, unless otherwise noted.) LARGE-SIGNAL PULSE RESPONSE (CLOAD = 15pF) MAX9914 toc27 LARGE-SIGNAL PULSE RESPONSE (CLOAD = 100pF) MAX9914 toc28 AV = 1V/V IN+ 1V/div IN+ 100mV/div AV = 10V/V OUTPUT 1V/div OUTPUT 1V/div 5µs/div 5µs/div PERCENT OVERSHOOT vs. CAPACITIVE LOAD MAX9914 toc29 OUTPUT WAVEFORM WITH RISO (CLOAD = 47pF, RISO = 2.3kΩ) 7 6 OVERSHOOT (%) 5 4 3 2 1 0 20 40 60 80 RL = 1MΩ RL = 100kΩ MAX9914 toc30 AV = 1V/V INPUT 50mV/div RL = 10kΩ OUTPUT 50mV/div 100 5µs/div CLOAD (pF) OUTPUT WAVEFORM WITHOUT RISO (CLOAD = 47pF) MAX9914 toc31 AV = 1V/V IN+ 50mV/div OUTPUT 50mV/div 5µs/div 8 _______________________________________________________________________________________ 1MHz, 20µA, Rail-to-Rail I/O Op Amps with Shutdown Pin Description PIN NAME MAX9914 1 2 3 4 5 — — — — — — — — — MAX9915 1 2 3 4 6 5 — — — — — — — — MAX9916 — 4 — — 8 — 1 2 3 — — 5 6 7 MAX9917 — 4 — — 10 — 1 2 3 5 6 7 8 9 IN+ VSS INOUT VDD SHDN OUTA INAINA+ SHDNA SHDNB INB+ INBOUTB 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 FUNCTION MAX9914–MAX9917 Detailed Description Featuring a maximized ratio of gain bandwidth to supply current, low operating supply voltage, low input bias current, and rail-to-rail inputs and outputs, the MAX9914–MAX9917 are an excellent choice for precision or general-purpose low-current, low-voltage, battery-powered applications. These CMOS devices consume an ultra-low 20µA (typ) supply current and a 200µV (typ) offset voltage. For additional power conservation, the MAX9914/MAX9917 feature a lowpower shutdown mode that reduces supply current to 1nA (typ), and puts the amplifiers’ output in a highimpedance state. These devices are unity-gain stable with a 1MHz gain-bandwidth product driving capacitive loads up to 30pF. The capacitive load can be increased to 100pF when the amplifier is configured for a 10V/V gain. The MAX9914–MAX9917 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 no clipping at the output voltage swing of the MAX9914–MAX9917 configured as a unity-gain buffer powered from a single 3V supply. Low Input Bias Current The MAX9914–MAX9917 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 MAX9914–MAX9917 amplifiers are unity-gain stable for loads up to 30pF. However, the capacitive load can be increased to 100pF 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 (about 5kΩ), the capacitive load can be increased up to 100pF. 9 Rail-to-Rail Inputs and Outputs The MAX9914–MAX9917 amplifiers all 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. _______________________________________________________________________________________ 1MHz, 20µA, Rail-to-Rail I/O Op Amps with Shutdown MAX9914–MAX9917 Power-Supply Considerations The MAX9914–MAX9917 are optimized for single 1.8V to 5.5V supply operation. A high amplifier power-supply rejection ratio of 85dB (typ) allows the devices to be powered directly from a battery, simplifying design and extending battery life. 3V IN_ 1V/div 0V 3V OUT_ 1V/div 0V VDD = 3V 200µs/div RAIL-TO-RAIL OUTPUT VOLTAGE RANGE Power-Up Settling Time The MAX9914–MAX9917 typically require 2µs 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 3.5µs for VDD = 3V (see the Typical Operating Characteristics for the Power-Up Settling Time graph). Figure 1. Rail-to-Rail Output Voltage Range Shutdown Mode The MAX9915 and MAX9917 feature active-low shutdown inputs. The MAX9915 and MAX9917 enter shutdown in 2µs (typ) and exit shutdown in 10µs (typ). The amplifiers’ outputs are high impedance in shutdown mode. Drive SHDN low to enter shutdown. Drive SHDN high to enable the amplifier. The MAX9917 dual amplifier features separate shutdown inputs. Shut down both amplifiers for lowest quiescent current. RISO MAX9914– MAX9917 RL CL AV = Power-Supply Bypassing and Layout Bypass VDD with a 0.1µF capacitor to ground as close to the pin as possible to minimize noise. Good layout techniques optimize performance by decreasing the amount of stray capacitance and inductance to the op amp’s inputs and outputs. Minimize stray capacitance and inductance, by placing external components close to the IC. 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 ______________________________________________________________________________________ 1MHz, 20µA, Rail-to-Rail I/O Op Amps with Shutdown Pin Configurations TOP VIEW IN+ 1 MAX9914–MAX9917 MAX9914 5 VDD IN+ 1 MAX9915 SHDN 6 VDD VSS 2 VSS 2 5 SHDN IN- 3 4 OUT IN- 3 4 OUT SC70 SC70 MAX9916 OUTA 1 8 7 6 5 VDD OUTB INBINB+ OUTA INA1 2 MAX9917 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 MAX9914 TRANSISTOR COUNT: 180 MAX9915 TRANSISTOR COUNT: 180 MAX9916 TRANSISTOR COUNT: 292 MAX9917 TRANSISTOR COUNT: 292 PROCESS: BiCMOS ______________________________________________________________________________________ 11 1MHz, 20µA, Rail-to-Rail I/O Op Amps with Shutdown MAX9914–MAX9917 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.) PACKAGE OUTLINE, 5L SC70 21-0076 C 1 1 12 ______________________________________________________________________________________ SC70, 5L.EPS 1MHz, 20µA, Rail-to-Rail I/O Op Amps with Shutdown 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.) MAX9914–MAX9917 PACKAGE OUTLINE, 6L SC70 21-0077 C 1 1 ______________________________________________________________________________________ SC70, 6L.EPS 13 1MHz, 20µA, Rail-to-Rail I/O Op Amps with Shutdown MAX9914–MAX9917 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" b C L e SYMBOL A A1 A2 b C D E E1 L L2 e e1 MIN 0.90 0.00 0.90 0.28 0.09 2.80 2.60 1.50 0.30 MAX 1.45 0.15 1.30 0.45 0.20 3.00 3.00 1.75 0.60 0.25 BSC. C L E C L E1 PIN 1 I.D. DOT (SEE NOTE 6) e1 D C C L 0 0.65 BSC. 1.95 REF. 0∞ 8∞ L2 A A2 A1 SEATING PLANE C GAUGE PLANE L 0 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. 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: DETAIL "A" PACKAGE OUTLINE, SOT-23, 8L BODY APPROVAL DOCUMENT CONTROL NO. REV. 21-0078 1 1 D 14 ______________________________________________________________________________________ SOT23, 8L .EPS 1MHz, 20µA, Rail-to-Rail I/O Op Amps with Shutdown 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.) MAX9914–MAX9917 e 10 4X S 10 INCHES 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° MILLIMETERS 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° H Ø0.50±0.1 0.6±0.1 1 1 0.6±0.1 TOP VIEW BOTTOM VIEW D2 GAGE PLANE A2 A b A1 D1 E2 c α E1 L1 L FRONT VIEW SIDE VIEW PROPRIETARY INFORMATION TITLE: PACKAGE OUTLINE, 10L uMAX/uSOP APPROVAL DOCUMENT CONTROL NO. REV. 21-0061 1 1 I 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. 10LUMAX.EPS