e TM ADVANCED EPAD LINEAR DEVICES, INC. ALD1722/ALD1722G PRECISION LOW POWER CMOS OPERATIONAL AMPLIFIER GENERAL DESCRIPTION FEATURES & BENEFITS Lead Free - RoHS compatible The ALD1722/ALD1722G is a monolithic precision low power CMOS Robust high-temperature operation operational amplifier intended for a broad range of precision applications Industry standard pinout requiring exremely low input signal power. Input signal power is the product Rail-to-rail input/output of input offset voltage and input bias current, which represents the mini- Exremely low input signal power mum required power draw from the signal source in order to drive the input Input bias current of 0.01pA and of the operational amplifier. Input signal power is also a figure of merit in input offset voltage of 25V source loading and its associated error, and is a measure of the basic signal No external components resolution possible through the operational amplifier for a given signal No internal chopper clocking noise source. For certain types of signal sources, signal loading directly trans- lates into a significant distortion orinterface noise equivalent term. No chopper dynamic power dissipation Simple and cost effective Small package size The ALD1722/ALD1722G is designed to set a new standard in low input Drive up to 4000pF load capacitance signal power requirements. The typical input loading at its input is 0.03 mV Low power offset voltage and 0.01 pA input bias current at 25C, resulting in 0.0003 fW Suitable for rugged, temperature-extreme input signal power draw. This input characteristic virtually eliminates any environments loading effects on most types of signal sources, offering unparalled accuracy and signal integrity and fidelity. Obviously, for capacitive and high sensitivity, high impedance signal sources, the ALD1722/ALD1722G is ideally suited. It is readily suited for +5V single supply (or 2V to 5V) APPLICATIONS systems, with low operating power dissipation, a traditional strength of CMOS technology. It is offered with industry standard pin configuration of Precision cable driver A741 and ICL7611 types. Sensor interface circuits Unity gain buffer amplifier The ALD1722/ALD1722G can operate with rail to rail large signal input and Precision analog cable driver output voltages with relatively high slew rate. The input voltage can be Transducer biasing circuits equal to or exceed the positive and negative supply voltages while the Capacitive and charge integration circuits output voltage can swing close to these supply voltage rails. This feature Biochemical probe interface significantly reduces the supply overhead voltage required to operate the Signal conditioning operational amplifier and allows numerous analog serial stages to operate Portable instruments in a low power supply environment. circuits may operate off the same power High source impedance electrode supply or battery. This device also features rail-to-rail input and output amplifiers voltage ranges, tolerance to over-voltage input spikes of 300mV beyond Precision Sample and Hold amplifiers supply rails, high open loop voltage gain, useful bandwidth of 1.5 MHz, slew Precision current to voltage converter rate of 2.1 V/s, and low supply current of 0.8mA. Finally, the output stage Error correction circuits can typically drive up to 400pF capacitive loads in the unity gain mode and Sensor compensation circuits up to 4000 pF capacitive load at a gain of 5. Precision gain amplifiers System output level shifter These features make the ALD1722/ALD1722G a versatile, high precision operational amplifier that is user friendly and easy to use with virtually no source loading and zero input-loading induced source errors. Additionally, robust design and rigorous screening make this device especially suitable PIN CONFIGURATION for operation in temperature-extreme environments and rugged condi- tions. 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 - V 4 5 N/C Small Outline Plastic Dip CERDIP Package (SOIC) Package Package TOPTOP VIEWVIEW SAL, PAL, DA PACKAGES ALD1722SAL ALD1722PAL ALD1722DA ALD1722GSAL ALD1722GPAL ALD1722GDA * 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 o T = 25 C V = 2.5V unless otherwise specified A S 1722 1722G Parameter Symbol Min Typ Max Min Typ Max Unit Test Conditions Supply Voltage V 2.0 5.0 2.0 5.0 V S + V 4.0 10.0 4.0 10.0 V Single Supply Input Offset Voltage V 25 90 80 400 VR 100K OS S Input Offset Current I 0.01 10 0.01 10 pA T = 25C OS A 280 280 pA 0C T +70C A Input Bias Current I 0.01 10 0.01 10 pA T = 25C B A 280 280 pA 0C T +70C A + Input Voltage Range V -0.3 +5.3 -0.3 +5.3 V V = +5V IR -2.8 +2.8 -2.8 +2.8 V V = 2.5V S 14 14 Input Resistance R 10 10 IN Input Offset Voltage Drift TCV 47 V/CR 100K OS S Power Supply Rejection Ratio PSRR 85 85 dB R 100K S Common Mode Rejection Ratio CMRR 97 97 dB R 100K S Large Signal Voltage Gain A 50 250 50 250 V/mV R =10K V L 500 500 V/mV R 1M L + V low 0.002 0.01 0.002 0.01 V R =1M V = 5V O L Output Voltage Range V high 4.99 4.998 4.99 4.998 V 0C T +70C O A V low -2.44 -2.35 -2.44 -2.35 V R =10K O L V high 2.35 2.44 2.35 2.44 V 0C T +70C O A Output Short Circuit Current I 88 mA SC Supply Current I 0.8 1.5 0.8 1.5 mA V = 0V S IN No Load Power Dissipation P 4.0 7.5 4.0 7.5 mW V = 2.5V D S Input Capacitance C 11 IN pF Maximum Load Capacitance C 400 400 pF Gain = 1 L 4000 4000 pF Gain = 5 Input Noise Voltage e 26 26 nV/ Hz f = 1KHz n Input Current Noise i 0.6 0.6 fA/ Hz f =10Hz n ALD1722/ALD1722G Advanced Linear Devices 2 of 9