FEATURES High linearity PSRR: 105dB minimum CMRR: 105 dB typical Very low supply current: 20 μA/amp maximum 1.8 V to 5.5 V single-supply operation Rail-to-rail input and output Low noise 2.9 μV p-p from 0.1 Hz to 10 Hz 4 mV offset voltage maximum Very low input bias current: 1 pA typical PIN CONFIGURATIONS BALL A1 CORNER 1 OUT A B -IN C +IN Employing a new circuit technology, these low cost amplifiers offer high linearity (excellent PSRR and CMRR performance) and very low bias current, while operating with a supply current of less than 20 μA per amplifier. V+ OUT B -IN +IN V- AD8606 TOP VIEW (BALL SIDE DOWN) Pressure and position sensors Remote security Medical monitors Battery-powered consumer equipment Hazard detectors The AD8506 is a dual micro-power amplifier featuring rail-to-rail input and output swings while operating from a 1.8 V to 5.5 V single power supply. 3 A APPLICATIONS GENERAL DESCRIPTION 2 02731-057 Preliminary Technical Data Micropower, Rail-to-Rail I/O, High Linearity Amplifiers AD8506 Figure 1. 8-Ball WLCSP OUT A -IN A +IN A V- 1 8 AD8506 V+ OUT B -IN B +IN B Figure 2. 8-Lead MSOP (RM Suffix) This combination of features makes the AD8506 amplifier an ideal choice for battery-powered applications since it minimizes errors due to power supply voltage variations over the battery’s lifetime and maintains relatively high CMRR for a rail-to-rail op amp. Remote battery-powered sensors, handheld instrumentation and consumer equipment, hazard detection (for example, smoke, fire, and gas), and patient monitors can benefit from the features of the AD8506 amplifier. The AD8506 is specified for both the industrial temperature range (−40°C to +85°C) and the extended industrial temperature range (−40°C to +125°C). AD8506 dual amplifiers are available in the standard 8-lead MSOP and WLCSP. 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 ©2007 Analog Devices, Inc. All rights reserved. AD8506 Preliminary Technical Data TABLE OF CONTENTS Features .............................................................................................. 1 Thermal Resistance .......................................................................5 Applications....................................................................................... 1 ESD Caution...................................................................................5 General Description ......................................................................... 1 Typical Performance Characteristics ..............................................6 Pin Configurations ........................................................................... 1 Terminology .......................................................................................7 Revision History ............................................................................... 2 Theory of Operation .........................................................................8 Specifications..................................................................................... 3 Applications Information .................................................................9 Electrical Characteristics – VS = 5V........................................... 3 Outline Dimensions ....................................................................... 10 Electrical Characteristics – VS =1.8V ........................................ 4 Ordering Guide .......................................................................... 10 Absolute Maximum Ratings............................................................ 5 REVISION HISTORY 10/07—Revision 0: Initial Version Rev. PrA | Page 2 of 10 Preliminary Technical Data AD8506 SPECIFICATIONS ELECTRICAL CHARACTERISTICS – VS = 5V VS = 5 V, VCM = Vs/2, TA = 25°C, unless otherwise specified. Table 1. Parameter INPUT CHARACTERISTICS Offset Voltage Input Bias Current Symbol Conditions VOS IB 0 V < VCM < 5 V Min Typ 1 −40°C < TA < +85°C −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 ΔVOS/ΔT OUTPUT CHARACTERISTICS Output Voltage High VOH Output Voltage Low VOL Short Circuit Limit ISC 0.5 −40°C < TA < +85°C −40°C < TA < +125°C −40°C < TA < +125°C VCM = 0 V to 5 V −40°C < TA < +85°C −40°C < TA < +125°C 0.05 < VOUT < 4.95 −40°C < TA < +85°C −40°C < TA < +125°C −40°C < TA < +85°C −40°C < TA < +125°C RL = 100 kΩ to GND RL = 10 kΩ to GND RL = 100 kΩ to VS RL = 10 kΩ to VS 0 90 90 90 110 100 100 Supply Current/Amplifier DYNAMIC PERFORMANCE Slew Rate Gain Bandwidth Product NOISE PERFORMANCE Peak-to-Peak Noise Voltage Noise Density Current Noise Density PSRR ISY VS = 1.8 V to 5 V −40°C to +85°C −40°C to +125°C VO = VS /2 −40°C < TA < +125°C SR GBP en p-p en in f = 0.1 to 10 Hz f = 1 kHz f = 10 Hz Rev. PrA | Page 3 of 10 Unit 4 10 100 600 5 50 100 5 mV pA pA pA pA pA pA V dB dB dB dB dB dB μV/°C μV/°C 105 105 130 2.2 2.2 4.95 4.85 4.99 4.9 2 8 −40°C to +85°C −40°C to +125°C POWER SUPPLY Power Supply Rejection Ratio Max 105 100 90 120 120 120 18 50 150 ±60 ±80 TBD V V mV mV mA mA mA 20 28 dB dB dB μA μA 12 150 mV/μs kHz 2.9 48 TBD μV p-p nV/√Hz fA/√Hz AD8506 Preliminary Technical Data ELECTRICAL CHARACTERISTICS – VS =1.8V VS = 1.8 V, VCM = Vs/2, TA = 25°C, unless otherwise specified. Table 2. Parameter INPUT CHARACTERISTICS Offset Voltage Input Bias Current Symbol Conditions VOS IB 0 V < VCM < 1.8 V Min Typ 1 −40°C < TA < +85°C −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 ΔVOS/ΔT OUTPUT CHARACTERISTICS Output Voltage High VOH Output Voltage Low VOL Short Circuit Limit ISC 0.5 −40°C < TA < +85°C −40°C < TA < +125°C −40°C < TA < +125°C VCM = 0 V to 1.8 V −40°C < TA < +85°C −40°C < TA < +125°C 0.05 < VOUT < 1.75 −40°C < TA < +85°C −40°C < TA < +125°C −40°C < TA < +85°C −40°C < TA < +125°C RL = 100 kΩ to GND RL = 10 kΩ to GND RL = 100 kΩ to VS RL = 10 kΩ to VS 0 90 85 85 110 100 100 Supply Current/Amplifier DYNAMIC PERFORMANCE Slew Rate Gain Bandwidth Product NOISE PERFORMANCE Peak-to-Peak Noise Voltage Noise Density Current Noise Density PSRR ISY VS = 1.8 V to 5 V −40°C to +85°C −40°C to +125°C VO = VS /2 −40°C < TA < +125°C SR GBP en p-p en in f = 0.1 to 10 Hz f = 1 kHz f = 10 Hz Rev. PrA | Page 4 of 10 Unit 4 10 100 600 5 50 100 5 mV pA pA pA pA pA pA V dB dB dB dB dB dB μV/°C μV/°C 105 100 130 2.2 2.2 1.75 1.65 TBD 1.7 TBD TBD ±4 −40°C to +85°C −40°C to +125°C POWER SUPPLY Power Supply Rejection Ratio Max 50 150 ±6 TBD 105 100 90 120 120 120 18 V V mV mV mA mA mA dB dB 20 28 μA μA 12 150 mV/μs kHz 2.9 48 TBD μV p-p nV/√Hz fA/√Hz Preliminary Technical Data AD8506 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, CB Packages Operating Temperature Range Junction Temperature Range RM, CB Packages Lead Temperature (Soldering, 60 sec) 1 θJA is specified for the worst-case conditions, that is, a device soldered in a circuit board for surface-mount packages. Rating 6V ±Vs ±Vs Indefinite −65°C to +150°C Table 4. Thermal Resistance Package Type 8-Lead MSOP (RM) 8-Ball WLCSP −40°C to +125°C −65°C to +150°C ESD CAUTION 300°C Differential input voltage is limited to 5 V or the supply voltage, 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. Rev. PrA | Page 5 of 10 θJA 190 TBD θJC 44 TBD Unit °C/W °C/W AD8506 Preliminary Technical Data TYPICAL PERFORMANCE CHARACTERISTICS Figure 3 Figure 6 Figure 4 Figure 7 Figure 5 Rev. PrA | Page 6 of 10 Preliminary Technical Data AD8506 TERMINOLOGY Definition Term Definition Definition Term Definition Definition Term Definition Definition Term Definition Definition Term Definition Definition Term Definition Rev. PrA | Page 7 of 10 AD8506 Preliminary Technical Data THEORY OF OPERATION Rev. PrA | Page 8 of 10 Preliminary Technical Data AD8506 APPLICATIONS INFORMATION Rev. PrA | Page 9 of 10 AD8506 Preliminary Technical Data OUTLINE DIMENSIONS 3.20 3.00 2.80 8 3.20 3.00 2.80 5 1 5.15 4.90 4.65 4 PIN 1 0.65 BSC 0.95 0.85 0.75 1.10 MAX 0.15 0.00 0.38 0.22 COPLANARITY 0.10 0.80 0.60 0.40 8° 0° 0.23 0.08 SEATING PLANE COMPLIANT TO JEDEC STANDARDS MO-187-AA Figure 8. 8-Lead Mini Small Outline Package [MSOP] (RM-8) Dimensions shown in millimeters 0.675 0.595 0.515 SEATING PLANE BALL 1 IDENTIFIER 3 2 1 A 0.340 0.320 0.300 1.825 1.775 1.725 B C 0.50 BALL PITCH TOP VIEW 0.380 0.355 0.330 (BALL SIDE DOWN) BOTTOM VIEW 0.27 0.24 0.21 (BALL SIDE UP) 090706-B 1.480 1.430 1.380 Figure 9. 8-Ball Wafer Level Chip Scale Package [WLCSP] (CB-8-1) Dimensions shown in millimeters ORDERING GUIDE Model AD8506ARMZ1 AD8506ACBZ1 1 Temperature Range –40°C to +125°C –40°C to +125°C Package Description 8-Lead Mini Small Outline Package [MSOP] 8-Ball Wafer Level Chip Scale Package [WLCSP] Z = RoHS Compliant Part. ©2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. PR06900-0-8/07(PrA) Rev. PrA | Page 10 of 10 Package Option RM-8 CB-8-1