e TM ADVANCED EPAD LINEAR DEVICES, INC. ALD1721/ALD1721G PRECISION MICROPOWER CMOS OPERATIONAL AMPLIFIER GENERAL DESCRIPTION FEATURES & BENEFITS The ALD1721/ALD1721G is a monolithic CMOS micropower high slew Lead Free - RoHS compatible rate operational amplifier intended for a broad range of precision applica- Robust high-temperature operation tions requiring exremely low input signal power. Input signal power is the Guaranteed extremely low input signal product of input offset voltage and input bias current, which represents the power of 1.5 fW minimum required power draw from the signal source in order to drive the Input offset voltage of 0.05 mV typical input of the operational amplifier. Input signal power is also a figure of (0.15 mV max.) merit in source loading and its associated error, and is a measure of the Low input bias currents of 0.01pA typical basic signal resolution possible through the operational amplifier for a (10pA max.) given signal source. For certain types of signal sources, signal loading Rail to rail input and output voltage ranges All parameters specified for +5V single directly translates into a significant distortion orinterface noise equiva- len term. supply or 2.5V dual supplies Unity gain stable, no compensation needed The ALD1721/ALD1721G is designed to set a new standard in low input High voltage gain -- typically 100V/mV signal power requirements. The typical input loading at its input is 0.05 mV 2.5V(100dB) offset voltage and 0.01 pA input bias current at 25C, resulting in 0.0005 Drive as low as 10K load fW input signal power draw. This input characteristic virtually eliminates Output short circuit protected any loading effects on most types of signal sources, offering unparalled Unity gain bandwidth of 0.7MHz accuracy and signal integrity and fidelity. Obviously, for capacitive and Slew rate of 0.7V/s high sensitivity, high impedance signal sources, the ALD1721/ Micro power dissipation ALD1721G is ideally suited. It is readily suited for +5V single supply (or Suitable for rugged, temperature-extreme 1V to 5V) systems, with low operating power dissipation, a traditional environments strength of CMOS technology. It is offered with industry standard pin configuration of A741 and ICL7611 types. APPLICATIONS The ALD1721/ALD1721G can operate with rail to rail large signal input Voltage amplifier and output voltages with relatively high slew rate. The input voltage can Voltage follower/buffer be equal to or exceed the positive and negative supply voltages while the Charge integrator output voltage can swing close to these supply voltage rails. This feature Photodiode amplifier significantly reduces the supply overhead voltage required to operate the Data acquisition systems operational amplifier and allows numerous analog serial stages to oper- High performance portable instruments ate in a low power supply environment. In addition, the device can Signal conditioning circuits accommodate mixed applications where digital and analog circuits may Sensor and transducer amplifiers operate off the same power supply or battery. Finally, the output stage Low leakage amplifiers can typically drive up to 50pF capacitive and 10K resistive loads. Active filters Sample/Hold amplifier These features make the ALD1721/ALD1721G a versatile, micropower high precision operational amplifier that is user friendly and easy to use Picoammeter with virtually no source loading and zero input-loading induced source Current to voltage converter errors. Additionally, robust design and rigorous screening make this device especially suitable for operation in temperature-extreme environ- PIN CONFIGURATION ments and rugged conditions. N/C 1 8 N/C ORDERING INFORMATION (L suffix denotes lead-free (RoHS)) + 2 -IN 2 7 V Operating Temperature Range 0C to +70C0C to +70C -55C to +125C +IN 3 6 OUT 8-Pin 8-Pin 8-Pin Small Outline Plastic Dip CERDIP - V 4 5 N/C Package (SOIC) Package Package TOPTOP VIEWVIEW ALD1721SAL ALD1721PAL ALD1721DA SAL, PAL, DA PACKAGES ALD1721GSAL ALD1721GPAL ALD1721GDA * N/C pins are internally connected. Do not connect externally. * Contact factory for leaded (non-RoHS) or high temperature versions. Rev 2.1 2011 Advanced Linear Devices, Inc. 415 Tasman Drive, Sunnyvale, CA 94089-1706 Tel: (408) 747-1155 Fax: (408) 747-1286 www.aldinc.com E N A D E L BABSOLUTE MAXIMUM RATINGS + Supply voltage, V 10.6V + Differential input voltage range -0.3V to V +0.3V Power dissipation 600 mW Operating temperature range SAL, PAL packages 0C to +70C DA package -55C to +125C Storage temperature range -65C to +150C Lead temperature, 10 seconds +260C CAUTION: ESD Sensitive Device. Use static control procedures in ESD controlled environment. OPERATING ELECTRICAL CHARACTERISTICS = 25C V = 2.5V unless otherwise specified T A S 1721 1721G Test Parameter Symbol Min Typ Max Min Typ Max Unit Conditions Supply V 1.0 5.0 1.0 5.0 Dual Supply S + Voltage V 2.0 10.0 2.0 10.0 V Single Supply Input Offset V 0.05 0.15 0.15 0.35 mV R 100K OS S Voltage 0.6 1.0 mV 0C T +70C A Input Offset I 0.01 10 0.01 10 pA T = 25C OS A Current 240 240 pA 0C T +70C A Input Bias I 0.01 10 0.01 10 pA T = 25C B A Current 240 240 pA 0C T +70C A + Input Voltage V -0.3 5.3 -0.3 5.3 V V = +5V IR Range -2.8 2.8 -2.8 2.8 V V = 2.5V S 14 14 Input R 10 10 IN Resistance Input Offset TCV 57 V/CR 100K OS S Voltage Drift Power Supply PSRR 65 80 65 80 dB R 100K S Rejection Ratio 65 80 65 80 dB 0C T +70C A Common Mode CMRR 65 83 65 83 dB R 100K S Rejection Ratio 65 83 65 83 dB 0C T +70C A Large Signal A 32 100 32 100 V/ mV R = 100K V L Voltage Gain 1000 1000 V/ mV R 1M L 20 20 V/ mV R = 100K L 0C T +70C A + Output V low 0.001 0.01 0.001 0.01 V R =1M V = +5V O L Voltage V high 4.99 4.999 4.99 4.999 V 0C T +70C O A Range V low -2.48 -2.40 -2.48 -2.40 V R =100K O L V high 2.40 2.48 2.40 2.48 V 0C T +70C O A Output Short I 1 1 mA SC Circuit Current Supply Current I 110 200 110 200 AV = 0V S IN No Load Power P 0.6 1.0 0.6 1.0 mW V = 2.5V D S Dissipation ALD1721/ALD1721G Advanced Linear Devices 2 of 9