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Part: OP279GP
Category:
Description: Rail-to-rail High Output Current Operational Amplifier
Company: Analog Devices
Datasheet: Download OP279GP datasheet File size : 421 kB
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FEATURES Rail-to-Rail Inputs and Outputs High Output Current: ± 80 mA Single Supply: +5 V to +12 V Wide Bandwidth: 5 MHz High Slew Rate: 3 V/µs Low Distortion: 0.01% Unity-Gain Stable No Phase Reversal Short Circuit Protected Drives Capacitive Loads: 10 nF APPLICATIONS Multimedia Telecom DAA Transformer Driver LCD Driver Low Voltage Servo Control
Rail-to-Rail High Output Current Operational Amplifier OP279
FUNCTIONAL BLOCK DIAGRAM 8-Lead Narrow Body 8-Lead Epoxy DIP SO (SO-8) (N-8)
1 2 3 4 8
OP279
OUT A IN A +IN A V
1 2 3 4
7 6 5
OP279
8 7 6 5
+V OUT B IN B +IN B
8-Lead TSSOP (RU Suffix)
1 4 8 5
PIN ROTATION IS THE SAME FOR ALL PACKAGES.
OP279
GENERAL DESCRIPTION
The OP279 is a dual rail-to-rail, high output current, singlesupply amplifier. It is designed for low voltage applications that require either current or capacitive load drive capability. The OP279 can sink and source currents of ± 80 mA (typ) and is stable with capacitive loads to 10 nF. Applications that benefit from the OP279's high output current include driving headphones, displays, transformers, and power transistors. The powerful output is combined with a unique input stage that maintains very low distortion with wide commonmode range, even in single supply designs. The OP279 can be used as a buffer to provide much greater drive capability than can usually be provided by CMOS outputs. CMOS ASICs and DACs often have outputs that can swing to both the positive supply and ground, but are incapable of driving greater than a few milliamps.
Bandwidth is typically 5 MHz and the slew rate is 3 V/µs, making these amplifiers well suited for single supply applications that require audio bandwidths when used in high gain configurations. Operation is guaranteed from voltages as low as 4.5 V, up to 12 V. When using the OP279 in +5 volt systems, very good audio performance can be attained. THD is below 0.01% with a 600 load, and noise is a respectable 21 nV/Hz. Supply current is less than 3.5 mA per amplifier. The OP279 is available in 8-pin plastic DIP and SO-8 surface mount packages. They are specified over the industrial (40°C to +85°C) temperature range.
REV. B
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 which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood. MA 02062-9106, U.S.A. Tel: 617/329-4700 Fax: 617/326-8703
OP279SPECIFICATIONS
ELECTRICAL SPECIFICATIONS (@ V = +5.0 V, V
S CM
= 2.5 V, 40°C TA +85°C unless otherwise noted)
Min Typ Max 4 ± 300 ± 600 ± 50 ± 100 5 66 4 Units mV nA nA nA nA V dB dB V/mV µV/°C V mV mV mA dB mA V V/µs MHz Degrees nF % nV/ Hz
Parameter INPUT CHARACTERISTICS Offset Voltage Input Bias Current Input Bias Current Input Offset Current Input Offset Current Input Voltage Range Common-Mode Rejection Ratio Common-Mode Rejection Ratio Large Signal Voltage Gain Offset Voltage Drift OUTPUT CHARACTERISTICS Output Voltage High Output Voltage Low Output Voltage Low Short Circuit Limit Output Impedance POWER SUPPLY Power Supply Rejection Ratio Supply Current/Amplifier Supply Voltage Range DYNAMIC PERFORMANCE Slew Rate Gain Bandwidth Product Phase Margin Capacitive Load Drive AUDIO PERFORMANCE Total Harmonic Distortion Voltage Noise Density
Symbol V OS IB IB IO S IOS VCM CMRR CMRR AVO VOS/ T VOH V OL V OL ISC ZOUT PSRR IS Y VS SR GBP m
Conditions VOUT = 2.5 V VOUT = 2.5 V, TA = +25°C VOUT = 2.5 V VOUT = 2.5 V, TA = +25°C VOUT = 2.5 V VCM = 0 V to 5 V VCM = 0 V to 3.5 V RL = 1 k, 0.3 V VOUT 4.7 V
0 56 70 20
IL = 10 mA Source IL = 10 mA Sink, TA = +25°C IL = 10 mA Sink f = 1 MHz, AV = 1 VS = +4.5 V to +12 V VOUT = 2.5 V
+4.8 ± 45 ± 80 22 88 2.6 75 100
76 +4.5
3.5 +12
RL = 1 k, 1 nF No Oscillation
3 5 60 10 0.01 22
A
THD en
S
f = 1 kHz
ELECTRICAL SPECIFICATIONS (@ V = ±5.0 V, 40°C T +85°C unless otherwise noted)
Parameter INPUT CHARACTERISTICS Offset Voltage Input Bias Current Input Bias Current Input Offset Current Input Offset Current Input Voltage Range Common-Mode Rejection Ratio Large Signal Voltage Gain Large Signal Voltage Gain Offset Voltage Drift OUTPUT CHARACTERISTICS Output Voltage High Output Voltage Low Short Circuit Limit Open-Loop Output Impedance POWER SUPPLY Supply Current/Amplifier DYNAMIC PERFORMANCE Slew Rate Full-Power Bandwidth Gain Bandwidth Product Phase Margin NOISE PERFORMANCE Voltage Noise Voltage Noise Density Current Noise Density
Specifications subject to change without notice.
Symbol V OS IB IB IO S IOS VCM CMRR A VO AVO VOS/ T VOH V OL ISC ZOUT IS Y SR B Wp GBP m en p-p en in
Conditions
Min
Typ
Max 4 ± 300 ± 600 ± 50 ± 100 +5
Units mV nA nA nA nA V dB V/mV V/mV µV/°C V V mA mA V/µs kHz MHz Degrees µV p-p nV/ Hz pA/ Hz
TA = +25°C TA = +25°C VCM = 5 V to +5 V RL = 1 k, 4.7 V VOUT 4.7 V, TA = +25°C RL = 1 k, 4.7 V VOUT 4.7 V 5 60 20 20 3 IL = 10 mA Source IL = 10 mA Sink f = 1 MHz, AV = +1 VS = ± 6 V, VOUT = 0 V RL = 1 k, 1 nF 1% Distortion +4.8 ± 50 ± 80 22 2 3 5 69 0.1 Hz to 10 Hz f = 1 kHz 2 22 66
4.85
3.75
1
2
REV. B
OP279 WAFER TEST LIMITS (@ V = +5.0 V, V
S CM
= 2.5 V, TA = +25°C unless otherwise noted)
Conditions VOUT = 2.5 V VOUT = 2.5 V VOUT = 2.5 V VCM = 0 V to 5 V V = +4.5 V to +12 V RL = 1 k IL = 10 mA Source IL = 10 mA Sink VS = ± 6 V, VOUT = 0 V, RL = Limit 4 ± 300 ± 50 56 76 20 4.8 75 3.75 Units mV max nA max nA max dB min dB min V/mV min V min mV max mA max
Parameter Offset Voltage Input Bias Current Input Offset Current Common-Mode Rejection Power Supply Rejection Ratio Large Signal Voltage Gain Output Voltage High Output Voltage Low Supply Current/Amplifier
Symbol VOS IB IO S CMRR PSRR AVO VOH VOL ISY
NOTE Electrical tests and wafer probe to the limits shown. Due to variations in assembly methods and normal yield loss, yield after packaging is not guaranteed for standard product dice. Consult factory to negotiate specifications based on dice lot qualifications through sample lot assembly and testing.
ABSOLUTE MAXIMUM RATINGS
DICE CHARACTERISTICS
+V
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+16 V Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+16 V Differential Input Voltage1 . . . . . . . . . . . . . . . . . . . . . . . . ± 1 V Output Short-Circuit Duration to GND . . . . . . . . . . Indefinite Storage Temperature Range P, S, RU Package . . . . . . . . . . . . . . . . . . . . 65°C to +150°C Operating Temperature Range OP279G, H . . . . . . . . . . . . . . . . . . . . . . . . . 40°C to +85°C Junction Temperature Range P, S, RU Package . . . . . . . . . . . . . . . . . . . . 65°C to +150°C Lead Temperature Range (Soldering, 60 sec) . . . . . . . +300°C Package Type 8-Pin Plastic DIP (P) 8-Pin SOIC (S) 8-Lead TSSOP JA2 103 158 240 JC 43 43 43 Units °C/W °C/W °C/W
OUTA
OUTB
INA
INB
+INA
+INB
V
OP279 Die Size 0.070 × 0.070 inch, 4,900 sq. mils Substrate (Die Backside) Is Connected to V+. Transistor Count, 129
NOTES 1 The inputs are clamped with back-to-back diodes. If the differential input voltage exceeds 1 volt, the input current should be limited to 5 mA. 2 JA is specified for the worst case conditions, i.e., JA is specified for device in socket for P-DIP, packages; JA is specified for device soldered in circuit board for SOIC packages.
ORDERING GUIDE
Model
Temperature Range
Package Description
Package Option
OP279GP 40°C to +85°C OP279GS 40°C to +85°C OP279HRU 40°C to +85°C
8-Pin Plastic DIP N-8 8-Pin SOIC SO-8 8-Pin TSSOP RU-8
CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the OP279 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality.
WARNING!
ESD SENSITIVE DEVICE
REV. B
3
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