Preliminary Technical Data 8.7MHz, 15nV/√Hz, Rail-to-Rail I/O, Zero Input Crossover Distortion Amplifiers ADA4500-2 FEATURES PSRR: 100dB minimum CMRR: 100 dB minimum Supply current: 1.6 mA/amp max Wide Bandwidth: 8.7 MHz 2.7 V to 5.5 V single-supply operation Rail-to-rail input and output Low noise 1.1 μV p-p from 0.1 Hz to 10 Hz 15nV/√Hz @ 1kHz 150 μV offset voltage maximum Very low input bias current: 10 pA maximum PIN CONFIGURATIONS ADA4500-2 APPLICATIONS Pressure and position sensors Remote security Medical monitors Process control Hazard detectors Photo Diode applications Figure 1. 8-Lead MSOP& LFCSP (RM & CP Suffix) GENERAL DESCRIPTION The ADA4500 is a dual 8.7MHz, 15 nV/√Hz, low power amplifier featuring rail-to-rail input and output swings while operating from a 2.7 V to 5.5 V single power supply. Employing a novel circuit technology, these amplifiers offer zero input crossover distortion (high linearity and excellent PSRR and CMRR performance), precision, wide bandwidth and very low bias current. This technology offer the excellent CMRR over the supply range without the cross-over distortion seen with the traditional complementary input stage. This combination of these features makes the ADA4500 amplifier an ideal choice for precision sensor applications as it minimizes errors due to power supply voltage variations over the supply voltage and maintains high CMRR even for a rail-to-rail input op amp. This results in excellent performance for driving Analog-to-Digital (A/D) converters without degradation of performance. The input common mode range includes both the negative and positive supplies. Sensors, handheld instrumentation, precision signal conditioning, and patient monitors can benefit from the features of the ADA4500. The ADA4500 is specified for the extended industrial temperature range (−40°C to +125°C). ADA4500-2 dual amplifiers are available in the standard 8-lead MSOP and LFCSP. Rev. PrA Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2012 Analog Devices, Inc. All rights reserved. Preliminary Technical Data ADA4500-2 SPECIFICATIONS ELECTRICAL CHARACTERISTICS; VS = 2.7V VS = 2.7 V, VCM = Vs/2, TA = 25°C, RL = 10kΩ, CL = 30 pF, unless otherwise specified. Table 1. Parameter INPUT CHARACTERISTICS Offset Voltage Input Bias Current Symbol Conditions Min VOS IB 0 V < VCM < 2.7 V Typ 1 −40°C < TA < +125°C Input Offset Current IOS Input Voltage Range Common-Mode Rejection Ratio CMRR Large Signal Voltage Gain AVO Offset Voltage Drift VOS/T Input Capacitance Common-Mode Input Capacitance Differential Input Capacitance Input Impedance OUTPUT CHARACTERISTICS Output Voltage High Output Voltage Low Short Circuit Limit POWER SUPPLY Power Supply Rejection Ratio Supply Current/Amplifier VOH VOL (V-) -0.3 100 100 110 105 RL = 10 kΩ to GND RL = 2 kΩ to GND RL = 10 kΩ to VS RL = 2 kΩ to VS 2.95 2.90 PSRR VS = 2.7 V to 5.5 V −40°C to +125°C VO = VS /2 −40°C < TA < +125°C 100 100 ISY ФM NOISE PERFORMANCE Total Harmonic Distortion + Noise THD+N SR GBP en p-p en in VS = 2.7 V, G= +1, f = 20Hz to 20kHz f = 0.1 to 10 Hz f = 1 kHz f = 1 kHz Unit 150 10 600 1 100 (V+) + 0.3 μV pA pA pA pA V dB dB dB dB μV/°C 110 130 0.2 ISC DYNAMIC PERFORMANCE Slew Rate Gain Bandwidth Product Phase Margin Peak-to-Peak Noise Voltage Noise Density Current Noise Density 0.5 −40°C < TA < +125°C −40°C < TA < +125°C VCM = V- to V+ −40°C < TA < +125°C (V-) + 0.05 < VOUT < (V+) - 0.05 −40°C < TA < +125°C −40°C < TA < +125°C Max 5 3 2 TBD pF pF MΩ 2.97 2.95 10 25 +20/-40 V V mV mV mA 50 100 110 1.35 1.6 1.9 dB dB mA mA 4.7 8.6 55 V/μs MHz Degrees 0.002 % 1.1 15 0.5 μV p-p nV/√Hz fA/√Hz Rev. PrA Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2009 Analog Devices, Inc. All rights reserved. Preliminary Technical Data ADA4500-2 ELECTRICAL CHARACTERISTICS; VS = 5V VS = 5 V, VCM = Vs/2, TA = 25°C, RL = 10kΩ, CL = 30 pF, unless otherwise specified. Table 2. Parameter INPUT CHARACTERISTICS Offset Voltage Input Bias Current Symbol Conditions VOS IB 0 V < VCM < 5 V Min Typ 1 −40°C < TA < +125°C Input Offset Current IOS Input Voltage Range Common-Mode Rejection Ratio CMRR Large Signal Voltage Gain AVO Offset Voltage Drift VOS/T Input Capacitance Common-Mode Input Capacitance Differential Input Capacitance Input Impedance OUTPUT CHARACTERISTICS Output Voltage High Output Voltage Low Short Circuit Limit POWER SUPPLY Power Supply Rejection Ratio Supply Current/Amplifier VOH VOL (V-) -0.3 100 100 110 100 RL = 10 kΩ to GND RL = 2 kΩ to GND RL = 10 kΩ to VS RL = 2 kΩ to VS 4.95 4.90 PSRR VS = 2.7 V to 5.5 V −40°C to +125°C VO = VS /2 −40°C < TA < +125°C 100 100 ISY ФM NOISE PERFORMANCE Total Harmonic Distortion + Noise THD+N SR GBP en p-p en in VS = 5 V, G= +1, f = 20Hz to 20kHz f = 0.1 to 10 Hz f = 1 kHz f = 1 kHz Rev. PrA | Page 3 of 4 Unit 150 10 600 1 100 (V+) + 0.3 μV pA pA pA pA V dB dB dB dB μV/°C 110 130 0.2 ISC DYNAMIC PERFORMANCE Slew Rate Gain Bandwidth Product Phase Margin Peak-to-Peak Noise Voltage Noise Density Current Noise Density 0.5 −40°C < TA < +125°C −40°C < TA < +125°C VCM = V- to V+ −40°C < TA < +125°C (V-) + 0.05 < VOUT < (V+) - 0.05 −40°C < TA < +125°C −40°C < TA < +125°C Max 5 3 2 TBD pF pF MΩ 4.97 4.95 5 25 ±50 V V mV mV mA 10 30 110 1.5 1.6 1.9 dB dB mA mA 5.2 8.7 54 V/μs MHz Degrees 0.002 % 1.1 15 0.5 μV p-p nV/√Hz fA/√Hz ADA4500-2 Preliminary Technical Data ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE Table 3. Parameter Supply Voltage Input Voltage Differential Input Voltage1 Output Short-Circuit Duration to Gnd Storage Temperature Range RM, CP Packages Operating Temperature Range Junction Temperature Range RM, CP Packages Lead Temperature (Soldering, 60 sec) 1 Rating 6V -Vs – 0.3V, +VS +0.3V -Vs – 0.6V, +VS +0.6V Indefinite −65°C to +150°C −40°C to +125°C −65°C to +150°C 300°C θJA is specified for the worst-case conditions, that is, a device soldered in a circuit board for surface-mount packages. Table 4. Thermal Resistance Package Type 8-Lead MSOP (RM-8) 8-Lead LFCSP (CP-8) ESD CAUTION Differential input voltage is limited to 5.6 V or the supply voltage+0.6V, whichever is less. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ©2012 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. PR10617-0-2/12(PrA) Rev. PrA | Page 4 of 4 θJA TBD TBD θJC TBD TBD Unit ºC/W ºC/W