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LT1886 Dataheets PDF



Part Number LT1886
Manufacturers Linear Technology
Logo Linear Technology
Description Dual 700MHz/ 200mA Operational Amplifier
Datasheet LT1886 DatasheetLT1886 Datasheet (PDF)

LT1886 Dual 700MHz, 200mA Operational Amplifier FEATURES s s s s s s s s s s s s s s s DESCRIPTIO 700MHz Gain Bandwidth ± 200mA Minimum IOUT Low Distortion: –72dBc at 1MHz, 4VP-P, 25Ω, AV = 2 Stable in AV ≥ 10, Simple Compensation for AV < 10 ± 4.3V Minimum Output Swing, VS = ± 6V, RL = 25Ω 7mA Supply Current per Amplifier 200V/µs Slew Rate Stable with 1000pF Load 6nV/√Hz Input Noise Voltage 2pA/√Hz Input Noise Current 4mV Maximum Input Offset Voltage 4µA Maximum Input Bias Current 400nA Maxi.

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LT1886 Dual 700MHz, 200mA Operational Amplifier FEATURES s s s s s s s s s s s s s s s DESCRIPTIO 700MHz Gain Bandwidth ± 200mA Minimum IOUT Low Distortion: –72dBc at 1MHz, 4VP-P, 25Ω, AV = 2 Stable in AV ≥ 10, Simple Compensation for AV < 10 ± 4.3V Minimum Output Swing, VS = ± 6V, RL = 25Ω 7mA Supply Current per Amplifier 200V/µs Slew Rate Stable with 1000pF Load 6nV/√Hz Input Noise Voltage 2pA/√Hz Input Noise Current 4mV Maximum Input Offset Voltage 4µA Maximum Input Bias Current 400nA Maximum Input Offset Current ± 4.5V Minimum Input CMR, VS = ± 6V Specified at ± 6V, ± 2.5V The LT®1886 is a 200mA minimum output current dual op amp with outstanding distortion performance. The amplifiers are gain-of-ten stable, but can be easily compensated for lower gains. The LT1886 features balanced, high impedance inputs with 4µA maximum input bias current, and 4mV maximum input offset voltage. Single supply applications are easy to implement and have lower total noise than current feedback amplifier implementations. The output drives a 25Ω load to ±4.3V with ±6V supplies. On ±2.5V supplies the output swings ±1.5V with a 100Ω load. The amplifier is stable with a 1000pF capacitive load which makes it useful in buffer and cable driver applications. The LT1886 is manufactured on Linear Technology’s advanced low voltage complementary bipolar process and is available in a thermally enhanced SO-8 package. U APPLICATIO S s s s s DSL Modems xDSL PCI Cards USB Modems Line Drivers , LTC and LT are registered trademarks of Linear Technology Corporation. TYPICAL APPLICATIO Single 12V Supply ADSL Modem Line Driver 12V 0.1µF IN + + 1/2 LT1886 12.4Ω HARMONIC DISTORTION (dBc) – 909Ω 10k 20k 100Ω 1:2* 100Ω 909Ω *COILCRAFT X8390-A OR EQUIVALENT 1886 TA01 1µF 10k 20k 1µF 100Ω – 0.1µF IN – 12.4Ω + 1/2 LT1886 U ADSL Modem Line Driver Distortion –60 VS = 12V AV = 10 f = 200kHz 100Ω LINE 1:2 TRANSFORMER HD2 –80 –70 –90 HD3 –100 0 2 4 6 8 10 12 LINE VOLTAGE (VP-P) 14 16 1886 TA01a U 1 LT1886 ABSOLUTE MAXIMUM RATINGS (Note 1) PACKAGE/ORDER I FOR ATIO TOP VIEW OUT A 1 –IN A 2 +IN A 3 V– 4 B 5 +IN B A 8 7 6 V+ OUT B –IN B Total Supply Voltage (V + to V –) ........................... 13.2V Input Current (Note 2) ....................................... ±10mA Input Voltage (Note 2) ............................................ ±VS Maximum Continuous Output Current (Note 3) DC ............................................................... ±100mA AC ............................................................... ± 300mA Operating Temperature Range (Note 10) – 40°C to 85°C Specified Temperature Range (Note 9) .. – 40°C to 85°C Maximum Junction Temperature ......................... 150°C Storage Temperature Range ................ – 65°C to 150°C Lead Temperature (Soldering, 10 sec)................. 300°C ORDER PART NUMBER LT1886CS8 S8 PART MARKING 1886 S8 PACKAGE 8-LEAD PLASTIC SO TJMAX = 150°C, θJA = 80°C/W (Note 4) Consult factory for Industrial and Military grade parts. The q denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VS = ± 6V, VCM = 0V, pulse power tested unless otherwise noted. (Note 9) SYMBOL VOS PARAMETER Input Offset Voltage Input Offset Voltage Drift IOS IB en in RIN CIN Input Offset Current q ELECTRICAL CHARACTERISTICS (Note 5) CONDITIONS q MIN TYP 1 MAX 4 5 17 400 600 4 6 UNITS mV mV µV/°C nA nA µA µA nV/√Hz pA/√Hz MΩ kΩ pF V V dB V dB dB V/mV V/mV V/mV V/mV ±V ±V ±V ±V ±V ±V mA mA (Note 8) q 3 150 1.5 Input Bias Current q Input Noise Voltage Input Noise Current Input Resistance Input Capacitance Input Voltage Range (Positive) Input Voltage Range (Negative) f = 10kHz f = 10kHz VCM = ±4.5V Differential q q 6 2 5 10 35 2 4.5 77 80 78 5.0 4.5 4.5 4.0 4.85 4.70 4.30 4.10 4.30 4.10 5.9 –5.2 98 ±2 86 12 12 5 4.6 4.5 800 500 –4.5 CMRR PSRR AVOL Common Mode Rejection Ratio Minimum Supply Voltage Power Supply Rejection Ratio Large-Signal Voltage Gain VCM = ±4.5V Guaranteed by PSRR VS = ±2V to ±6.5V q q q VOUT = ±4V, RL = 100Ω q VOUT = ±4V, RL = 25Ω q VOUT Output Swing RL = 100Ω, 10mV Overdrive q RL = 25Ω, 10mV Overdrive q IOUT = 200mA, 10mV Overdrive q ISC Short-Circuit Current (Sourcing) Short-Circuit Current (Sinking) (Note 3) 2 U W U U W W W LT1886 The q denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VS = ± 6V, VCM = 0V, pulse power tested unless otherwise noted. (Note 9) SYMBOL SR PARAMETER Slew Rate Full Power Bandwidth GBW tr, tf Gain Bandwidth Rise Time, Fall Time Overshoot Propagation Delay tS Settling Time Harmonic Distortion IMD ROUT Intermodulation Distortion Output Resistance Channel Separation IS Supply Current CONDITIONS AV = –10 (Note 6) q ELECTRICAL CHARACTERISTICS MIN 133 110 TYP 200 8 700 4 1 2.5 50 – 75/– 63 – 85/– 71 – 81/– 80 0.1 MAX UNITS V/µs V/µs MHz MHz ns % ns ns dBc dBc dBc Ω dB dB 4V Peak (Note 7) f = .


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