19-3407; Rev 1; 10/05 1MHz, 20µA, Rail-to-Rail I/O Op Amps with Shutdown 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. Features ♦ 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 Applications Ordering Information Portable Medical Devices PART Portable Test Equipment TEMP RANGE PINPACKAGE TOP MARK RF Tags MAX9914EXK+T -40°C to +85°C 5 SC70-5 AGB Laptops MAX9914EXK-T -40°C to +85°C 5 SC70-5 AGB Data-Acquisition Equipment MAX9915EXT+T -40°C to +85°C 6 SC70-6 ACB MAX9915EXT-T -40°C to +85°C 6 SC70-6 ACB MAX9916EKA+T -40°C to +85°C 8 SOT23-8 AEJZ MAX9916EKA-T -40°C to +85°C 8 SOT23-8 AEJZ MAX9917EUB -40°C to +85°C 10 µMAX — MAX9917EUB+ -40°C to +85°C 10 µMAX — Typical Operating Circuit 3V VDD MAX9916 IN+ +Denotes lead-free package. INA+ OUTA OUT R1 47kΩ INAGAIN = RG* IN- R2 10kΩ INB+ (R1 + R2 + R3 + R4) (R2 + R3) Selector Guide FOR R1 = R4 AND R2 = R3 GAIN = 1 + OUTB R4 R2 PART AMPLIFIERS PER PACKAGE MAX9914EXK-T 1 No 5 SC70-5 MAX9915EXT-T 1 Yes 6 SC70-6 MAX9916EKA-T 2 No 8 SOT23-8 MAX9917EUB 2 Yes 10 µMAX R3 10kΩ SHUTDOWN PACKAGE MODE INBVSS R4 47kΩ 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 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 MAX9914–MAX9917 General Description MAX9914–MAX9917 1MHz, 20µA, 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 MAX9914/MAX9915 Supply Current IDD MAX9916/MAX9917 Shutdown Supply Current Input Offset Voltage IDD(SHDN_) Input Offset Current TYP 1.8 VDD = 1.8V MAX UNITS 5.5 V 20 VDD = 5.5V 20 VDD = 1.8V 40 VDD = 5.5V 25 µA 40 50 SHDN_ = GND, MAX9915/MAX9917 0.001 0.5 µA ±0.2 ±1 mV MAX9916/MAX9917 ±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 85 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 AVOL RL = 100kΩ Output-Voltage-Swing High Output-Voltage-Swing Low VOH VOL Channel-to-Channel Isolation CHISO Output Short-Circuit Current IOUT(SC) 2 VDD - VOUT VOUT - VSS dB 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, MAX9916/MAX9917 mV mV 100 dB ±15 mA _______________________________________________________________________________________ 1MHz, 20µA, 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 CONDITIONS MIN TYP MAX VDD = 1.8V to 3.6V, MAX9915/MAX9917 0.4 VDD = 3.6V to 5.5V, MAX9915/MAX9917 0.8 VDD = 1.8V to 3.6V, MAX9915/MAX9917 1.4 VDD = 3.6V to 5.5V, MAX9915/MAX9917 2 IIL SHDN_ = VSS, MAX9915/MAX9917 (Note 2) IIH SHDN_ = VDD, MAX9915/MAX9917 UNITS V V 1 500 nA SHDN_ = VSS, VOUT = 0V to VDD, MAX9915/MAX9917 1 1 MHz Phase Margin CL = 15pF 45 degrees Gain Margin CL = 15pF Output Leakage in Shutdown IOUT(SHDN_) Gain-Bandwidth Product Slew Rate Capacitive-Load Stability (See the Driving Capacitive Loads Section) CLOAD No sustained oscillations 500 nA 10 dB 0.5 V/µs AV = 1V/V 30 AV = 10V/V 100 RL = 5kΩ, AV = 1V/V 100 RISO = 1kΩ, AV = 1V/V 100 pF Input Voltage-Noise Density f = 1kHz 160 nV/√Hz Input Current-Noise Density f = 1kHz 0.001 pA/√Hz Settling Time To 0.1%, VOUT = 2V step, AV = -1V/V 3.5 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 10 µs VDD = 0 to 5.5V step 2 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 MAX9914/MAX9915 MAX9916/MAX9917 MIN TYP 1.8 TCVOS UNITS 5.5 V 29 VDD = 5.5V 60 SHDN_ = GND, MAX9915/MAX9917 VOS Input-Offset-Voltage Temperature Coefficient MAX ±5 µA 1 µA ±3 mV µV/°C _______________________________________________________________________________________ 3 MAX9914–MAX9917 ELECTRICAL CHARACTERISTICS (continued) MAX9914–MAX9917 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 = -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 60 dB 25mV < VOUT < VDD - 25mV, RL = 100kΩ, VDD = 5.5V 85 150mV < VOUT < VDD - 150mV, RL = 5kΩ, VDD = 5.5V 85 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 6 RL = 5kΩ 90 RL = 100kΩ 5 RL = 5kΩ 90 VDD = 1.8V to 3.6V, MAX9915/MAX9917 0.4 VDD = 3.6V to 5.5V, MAX9915/MAX9917 0.8 VDD = 1.8V to 3.6V, MAX9915/MAX9917 1.4 VDD = 3.6V to 5.5V, MAX9915/MAX9917 2 mV V V IIL SHDN_ = VSS, MAX9915/MAX9917 5 nA IIH SHDN_ = VDD, MAX9915/MAX9917 1000 nA 1000 nA 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 mV _______________________________________________________________________________________ 1MHz, 20µA, Rail-to-Rail I/O Op Amps with Shutdown DUAL 40 TA = +25°C TA = -40°C 25 TA = +85°C 20 SINGLE 15 10 0 750 500 6 4 2 2.6 3.3 4.1 4.8 0 -750 -1000 -40 -15 10 35 60 0 85 0.5 1.0 1.5 2.0 3.0 2.5 VSUPPLY (V) TEMPERATURE (°C) VCM (V) INPUT OFFSET VOLTAGE vs. TEMPERATURE INPUT BIAS CURRENT vs. TEMPERATURE INPUT BIAS CURRENT vs. INPUT COMMON-MODE VOLTAGE 5 4 -80 3 IB (pA) -60 -100 4 3 2 IB- I B+ 1 2 0 1 -1 -140 0 -2 -160 -1 -3 -180 -2 -4 -200 -3 -5 -120 -15 10 35 60 85 -40 MAX9914 toc06 6 IB (pA) -40 5 MAX9914 toc05 7 MAX9914 toc04 0 -20 -40 TA = +25°C TA = -40°C -500 -2 5.5 TA = +85°C 250 -250 0 -6 1.8 -15 10 35 60 -0.5 85 0 0.5 1.0 1.5 2.0 2.5 TEMPERATURE (°C) VCM (V) POWER-SUPPLY REJECTION RATIO vs. FREQUENCY COMMON-MODE REJECTION RATIO vs. TEMPERATURE COMMON-MODE REJECTION RATIO vs. FREQUENCY 140 MAX9914 toc07 0 -10 -20 120 0 -10 -20 100 CMRR (dB) -30 -40 -50 -60 -70 3.5 3.0 TEMPERATURE (°C) -30 CMRR (dB) VOS (µV) 8 -4 5 PSRR (dB) 10 MAX9914 toc09 30 1000 MAX9914 toc08 ICC (µA) 35 12 MAX9914 toc03 TA = +85°C VOS (µV) TA = -40°C MAX9914 toc02 TA = +25°C SHUTDOWN SUPPLY CURRENT (nA) 50 45 INPUT OFFSET VOLTAGE vs. INPUT COMMON-MODE VOLTAGE SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE MAX9914 toc01 SUPPLY CURRENT vs. SUPPLY VOLTAGE 80 60 -40 -50 -60 -70 40 -80 -80 20 -90 -90 0 -100 0.1 1 10 100 FREQUENCY (Hz) 1k 10k -100 -40 -15 10 35 TEMPERATURE (°C) 60 85 1 10 100 1k 10k 100k FREQUENCY (Hz) _______________________________________________________________________________________ 5 MAX9914–MAX9917 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.) 1.5 1.0 0.5 0 -0.5 100 RL = 5kΩ RL = 100kΩ 10 RL TO VSS VOH = VDD - VOUT -1.0 1 -1.5 1.8 2.8 3.8 4.8 -40 5.5 10 35 60 100 RL = 5kΩ RL TO VDD VOL = VOUT - VSS 1 85 -40 -15 10 35 85 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 AVOL (dB) RL = 5kΩ RL = 1kΩ 60 40 20 RL = 5kΩ 80 -15 10 35 135 40 90 100 20 45 RL = 1kΩ 80 0 0 PHASE -20 -45 60 -40 -90 40 -60 -135 -80 -180 -100 -225 85 60 180 120 0 -40 225 AV = 1000V/V GAIN 60 20 0 MAX9914 toc15 100 GAIN (dB) 100 80 RL = 100kΩ MAX9914 toc14 160 MAX9914 toc13 RL = 100kΩ 120 -270 -120 -40 -15 10 35 60 85 1 10 100 1k 10k 100k 1M 10M 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 20 45 0 PHASE -20 -45 CROSSTALK (dB) 90 0 -10 -20 -30 -40 -60 -40 -50 -60 -40 -90 -60 -135 -70 -80 -80 -180 -100 -225 -120 -270 1 10 100 1k 10k 100k FREQUENCY (Hz) 1M 10M MAX9914 toc18 MAX9916/MAX9917 -20 135 40 0 0 180 MAX9914 toc17 GAIN 60 225 PHASE (DEGREES) 80 AV = 1000V/V THD+N (dB) MAX9914 toc16 100 6 RL = 100kΩ 10 SUPPLY VOLTAGE (V) 140 AVOL (dB) -15 RL = 1kΩ -80 -100 VOUT = 2VP-P -90 -100 -120 10 100 1k FREQUENCY (Hz) 10k 100k 10 100 1k FREQUENCY (Hz) _______________________________________________________________________________________ 10k PHASE (DEGREES) 2.0 1000 OUTPUT VOLTAGE SWING (mV) MAX9914 toc11 2.5 RL = 1kΩ OUTPUT VOLTAGE SWING (mV) 3.0 SLEW RATE (V/µs) 1000 MAX9914 toc10 3.5 OUTPUT-SWING LOW vs. TEMPERATURE MAX9914 toc12 OUTPUT-SWING HIGH vs. TEMPERATURE SLEW RATE vs. SUPPLY VOLTAGE GAIN (dB) MAX9914–MAX9917 1MHz, 20µA, Rail-to-Rail I/O Op Amps with Shutdown 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 RESISTOR ISOLATION vs. CAPACITIVE LOAD MAX9914 toc20 MAX9914 toc19 POWER-UP SETTLING TIME MAX9914 toc21 3000 AV = 1V/V FOR AV = 10V/V NO RISO NEEDED 2500 VDD 1V/div 2000 RISO (Ω) 1000 1500 1000 OUTPUT 500mV/div 500 IN+ = VDD / 2 AV = 1V/V 0 100 10 100 1k 10k 10 100k 100 10,000 1000 FREQUENCY (Hz) CLOAD (pF) SHUTDOWN RESPONSE SMALL-SIGNAL GAIN vs. FREQUENCY MAX9914 toc22 IN+ = VDD / 2 AV = 1V/V 10 AV = 1V/V VOUT = 100mVP-P CLOAD = 15pF 8 3V 6 SHDN = 3V 1µs/div LARGE-SIGNAL GAIN vs. FREQUENCY 4 MAX9914 toc23 1 1.5V 2 2 GAIN (dB) GAIN (dB) 0V 0 -2 -8 -3 -10 -4 1k 20µs/div 0 -2 -6 0V 1 -1 -4 OUTPUT AV = 1V/V VOUT = 2VP-P CLOAD = 15pF 3 4 10k 100k 1M 10M 1 FREQUENCY (Hz) 10 100 1000 FREQUENCY (kHz) SMALL-SIGNAL PULSE RESPONSE (CLOAD = 15pF) SMALL-SIGNAL PULSE RESPONSE (CLOAD = 100pF) MAX9914 toc25 MAX9914 toc26 AV = 10V/V AV = 1V/V IN+ 50mV/div IN+ 5mV/div OUTPUT 50mV/div OUTPUT 50mV/div 1µs/div MAX9914 toc24 VOLTAGE NOISE (nV/√Hz) 10,000 5µs/div _______________________________________________________________________________________ 7 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) LARGE-SIGNAL PULSE RESPONSE (CLOAD = 100pF) MAX9914 toc27 MAX9914 toc28 AV = 10V/V AV = 1V/V IN+ 1V/div IN+ 100mV/div OUTPUT 1V/div OUTPUT 1V/div 5µs/div 5µs/div PERCENT OVERSHOOT vs. CAPACITIVE LOAD OUTPUT WAVEFORM WITH RISO (CLOAD = 47pF, RISO = 2.3kΩ) MAX9914 toc30 MAX9914 toc29 7 6 OVERSHOOT (%) MAX9914–MAX9917 1MHz, 20µA, Rail-to-Rail I/O Op Amps with Shutdown 5 AV = 1V/V INPUT 50mV/div RL = 1MΩ RL = 100kΩ 4 3 RL = 10kΩ OUTPUT 50mV/div 2 1 0 20 40 60 80 100 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 NAME FUNCTION MAX9914 MAX9915 MAX9916 MAX9917 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 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. 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. Amplifier Output Channel B 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 MAX9914–MAX9917 Pin Description MAX9914–MAX9917 1MHz, 20µA, Rail-to-Rail I/O Op Amps with Shutdown Power-Supply Considerations RAIL-TO-RAIL OUTPUT VOLTAGE RANGE 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 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). 3V OUT_ 1V/div 0V VDD = 3V 200µs/div 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 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 IN- VDD 100kΩ MAX991_ IN+ VSS 100kΩ Figure 3. Power-Up Test Configuration 10 CL ______________________________________________________________________________________ OUT 1MHz, 20µA, Rail-to-Rail I/O Op Amps with Shutdown TOP VIEW MAX9914 IN+ 1 MAX9915 5 VDD VSS 2 IN- 3 OUTA 4 OUT IN+ 1 SHDN 6 VDD VSS 2 5 SHDN IN- 3 4 OUT SC70 SC70 MAX9916 MAX9917 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 MAX9914 TRANSISTOR COUNT: 180 MAX9915 TRANSISTOR COUNT: 180 MAX9916 TRANSISTOR COUNT: 292 MAX9917 TRANSISTOR COUNT: 292 PROCESS: BiCMOS ______________________________________________________________________________________ 11 MAX9914–MAX9917 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 MAX9914–MAX9917 1MHz, 20µA, Rail-to-Rail I/O Op Amps with Shutdown PACKAGE OUTLINE, 5L SC70 21-0076 12 ______________________________________________________________________________________ C 1 1 1MHz, 20µA, Rail-to-Rail I/O Op Amps with Shutdown SC70, 6L.EPS PACKAGE OUTLINE, 6L SC70 21-0077 C 1 1 ______________________________________________________________________________________ 13 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.) 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 MAX9914–MAX9917 1MHz, 20µA, 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 1MHz, 20µA, 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. 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.)