OP295GS

Dual/Quad Rail-to-Rail Operational Amplifiers OP295/OP495 FEATURES Rail-to-rail output swing Single-supply operation: 3 V to 36 V Low offset voltage: 300 μV Gain bandwidth product: 75 kHz High open-loop gain: 1000 V/mV Unity-gain stable Low supply current/per amplifier: 150 μA maximum PIN CONFIGURATIONS OUT A –IN A +IN A V– 1 2 3 4 8 V+ OUT B 00331-001 00331-004 TOP VIEW (Not to Scale) OP295 7 6 5 –IN B +IN B Figure 1. 8-Lead Narrow-Body SOIC_N (S Suffix) APPLICATIONS Battery-operated instrumentation Servo amplifiers Actuator drives Sensor conditioners Power supply control OUT A –IN A +IN A V– 1 2 3 4 OP295 8 7 6 5 V+ OUT B 00331-002 00331-003 –IN B +IN B Figure 2. 8-Lead PDIP (P Suffix) GENERAL DESCRIPTION Rail-to-rail output swing combined with dc accuracy are the key features of the OP495 quad and OP295 dual CBCMOS operational amplifiers. By using a bipolar front end, lower noise and higher accuracy than those of CMOS designs have been achieved. Both input and output ranges include the negative supply, providing the user with zero-in/zero-out capability. For users of 3.3 V systems such as lithium batteries, the OP295/OP495 are specified for 3 V operation. Maximum offset voltage is specified at 300 μV for 5 V operation, and the open-loop gain is a minimum of 1000 V/mV. This yields performance that can be used to implement high accuracy systems, even in single-supply designs. The ability to swing rail-to-rail and supply 15 mA to the load makes the OP295/OP495 ideal drivers for power transistors and H bridges. This allows designs to achieve higher efficiencies and to transfer more power to the load than previously possible without the use of discrete components. For applications such as transformers that require driving inductive loads, increases in efficiency are also possible. Stability while driving capacitive loads is another benefit of this design over CMOS rail-to-rail amplifiers. This is useful for driving coax cable or large FET transistors. The OP295/OP495 are stable with loads in excess of 300 pF. OUT A –IN A +IN A V+ +IN B –IN B OUT B 1 2 3 4 5 6 7 14 13 12 OUT D –IN D +IN D V– +IN C –IN C OUT C OP495 11 10 9 8 Figure 3. 14-Lead PDIP (P Suffix) OUT A –IN A +IN A V+ +IN B –IN B OUT B NC 1 2 3 4 5 6 7 8 16 15 OUT D –IN D +IN D V– +IN C –IN C OUT C NC TOP VIEW (Not to Scale) OP495 14 13 12 11 10 9 NC = NO CONNECT Figure 4. 16-Lead SOIC_W (S Suffix) The OP295 and OP495 are specified over the extended industrial (−40°C to +125°C) temperature range. The OP295 is available in 8-lead PDIP and 8-lead SOIC_N surface-mount packages. The OP495 is available in 14-lead PDIP and 16-lead SOIC_W surface-mount packages. Rev. E 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 ©2006 Analog Devices, Inc. All rights reserved. OP295/OP495 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 1 Pin Configurations ........................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Electrical Characteristics............................................................. 3 Absolute Maximum Ratings............................................................ 5 Thermal Resistance ...................................................................... 5 ESD Caution.................................................................................. 5 Typical Performance Characteristics ............................................. 6 Applications....................................................................................... 9 Rail-to-Rail Application Information........................................ 9 Low Drop-Out Reference ............................................................ 9 Low Noise, Single-Supply Preamplifier ..................................... 9 Driving Heavy Loads ................................................................. 10 Direct Access Arrangement ...................................................... 10 Single-Supply Instrumentation Amplifier .............................. 10 Single-Supply RTD Thermometer Amplifier ......................... 11 Cold Junction Compensated, Battery-Powered Thermocouple Amplifier .......................................................... 11 5 V Only, 12-Bit DAC That Swings 0 V to 4.095 V.................... 11 4 to 20 mA Current-Loop Transmitter.................................... 12 3 V Low Dropout Linear Voltage Regulator............................. 12 Low Dropout, 500 mA Voltage Regulator with Foldback Current Limiting ........................................................................ 12 Square Wave Oscillator.............................................................. 13 Single-Supply Differential Speaker Driver.............................. 13 High Accuracy, Single-Supply, Low Power Comparator ...... 13 Outline Dimensions ....................................................................... 14 Ordering Guide .......................................................................... 16 REVISION HISTORY 5/06—Rev. D to Rev. E Updated Format..................................................................Universal Changes to Features.......................................................................... 1 Changes to Pin Connections........................................................... 1 Updated Outline Dimensions ....................................................... 14 Changes to Ordering Guide .......................................................... 15 2/04—Rev. C to Rev. D Changes to General Description .................................................... 1 Changes to Specifications ................................................................ 2 Changes to Absolute Maximum Ratings ....................................... 4 Changes to Ordering Guide ............................................................ 4 Updated Outline Dimensions ....................................................... 12 3/02—Rev. B to Rev. C Figure changes to Pin Connections ................................................1 Deleted OP295GBC and OP495GBC from Ordering Guide ......3 Deleted Wafer Test Limits Table......................................................3 Changes to Absolute Maximum Ratings........................................4 Deleted Dice Characteristics............................................................4 Rev. E | Page 2 of 16 OP295/OP495 SPECIFICATIONS ELECTRICAL CHARACTERISTICS VS = 5.0 V, VCM = 2.5 V, TA = 25°C, unless otherwise noted. Table 1. Parameter INPUT CHARACTERISTICS Offset Voltage Input Bias Current Input Offset Current Input Voltage Range Common-Mode Rejection Ratio Large Signal Voltage Gain Offset Voltage Drift OUTPUT CHARACTERISTICS Output Voltage Swing High Symbol VOS −40°C ≤ TA ≤ +125°C IB −40°C ≤ TA ≤ +125°C IOS −40°C ≤ TA ≤ +125°C VCM CMRR AVO ΔVOS/ΔT VOH RL = 100 kΩ to GND RL = 10 kΩ to GND IOUT = 1 mA, −40°C ≤ TA ≤ +125°C RL = 100 kΩ to GND RL = 10 kΩ to GND IOUT = 1 mA, −40°C ≤ TA ≤ +125°C 4.98 4.90 0 V ≤ VCM ≤ 4.0 V, −40°C ≤ TA ≤ +125°C RL = 10 kΩ, 0.005 ≤ VOUT ≤ 4.0 V RL = 10 kΩ, −40°C ≤ TA ≤ +125°C 0 90 1000 500 110 10,000 1 5.0 4.94 4.7 0.7 0.7 90 ±18 110 150 0.03 75 86 1.5 51