LME49870

LME49870 44V Single High Performance, High Fidelity Audio Operational Amplifier January 14, 2008 LME49870 44V Single High Performance, High Fidelity Audio Operational Amplifier General Description The LME49870 is part of the ultra-low distortion, low noise, high slew rate operational amplifier series optimized and fully specified for high performance, high fidelity applications. Combining advanced leading-edge process technology with state-of-the-art circuit design, the LME49870 audio operational amplifier delivers superior audio signal amplification for outstanding audio performance. The LME49870 combines extremely low voltage noise density (2.7nV/√Hz) with vanishingly low THD+N (0.00003%) to easily satisfy the most demanding audio applications. To ensure that the most challenging loads are driven without compromise, the LME49870 has a high slew rate of ±20V/μs and an output current capability of ±26mA. Further, dynamic range is maximized by an output stage that drives 2kΩ loads to within 1V of either power supply voltage and to within 1.4V when driving 600Ω loads. The LME49870's outstanding CMRR (120dB), PSRR (120dB), and VOS (0.1mV) give the amplifier excellent operational amplifier DC performance. The LME49870 has a wide supply range of ±2.5V to ±22V. Over this supply range the LME49870 maintains excellent common-mode rejection, power supply rejection, and low input bias current. The LME49870 is unity gain stable. This Audio Operational Amplifier achieves outstanding AC performance while driving complex loads with values as high as 100pF. The LME49870 is available in 8–lead narrow body SOIC. Demonstration boards are available for each package. RL = 2kΩ RL = 600Ω 0.00003% (typ) 0.00003% (typ) 2.7nV/√Hz (typ) ±20V/μs (typ) 55MHz (typ) 140dB (typ) 10nA (typ) 0.1mV (typ) 0.000009% ■ Input Noise Density ■ Slew Rate ■ Gain Bandwidth Product ■ Open Loop Gain (RL = 600Ω) ■ Input Bias Current ■ Input Offset Voltage ■ DC Gain Linearity Error Features ■ ■ ■ ■ Easily drives 600Ω loads Optimized for superior audio signal fidelity Output short circuit protection PSRR and CMRR exceed 120dB (typ) Applications ■ High quality audio amplification ■ High fidelity preamplifiers, phono preamps, and ■ ■ ■ ■ multimedia High performance professional audio High fidelity equalization and crossover networks with active filters High performance line drivers and receivers Low noise industrial applications including test, measurement, and ultrasound Key Specifications ■ Power Supply Voltage Range ■ THD+N (AV = 1, VOUT = 3VRMS, fIN = 1kHz) ±2.5V to ±22V Typical Application 300194k5 Passively Equalized RIAA Phono Preamplifier © 2008 National Semiconductor Corporation 300194 www.national.com LME49870 Connection Diagrams 30019401 Order Number LME49870MA See NS Package Number — M08A LME49870 Top Mark 30019402 N — National Logo Z — Assembly Plant code X — 1 Digit Date code TT — Die Traceability L49870 — LME49870 MA — Package code www.national.com 2 LME49870 Absolute Maximum Ratings (Notes 1, 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Power Supply Voltage (VS = V+ - V-) Storage Temperature Input Voltage Output Short Circuit (Note 3) Power Dissipation ESD Rating (Note 4) ESD Rating (Note 5) 46V −65°C to 150°C (V-) - 0.7V to (V+) + 0.7V Continuous Internally Limited 2000V Pins 1, 4, 7 and 8 Pins 2, 3, 5 and 6 Junction Temperature Thermal Resistance  θJA (SO) 200V 100V 150°C 145°C/W Operating Ratings Temperature Range TMIN ≤ TA ≤ TMAX Supply Voltage Range ±2.5V ≤ VS ≤ ±22V −40°C ≤ TA ≤ 85°C Electrical Characteristics for the LME49870 (Note 1) The following specifications apply for VS = ±18V and ±22V, RL = 2kΩ, RSOURCE = 10Ω, fIN = 1kHz, TA = 25°C, unless otherwise specified. LME49870 Symbol Parameter Conditions AV = 1, VOUT = 3Vrms THD+N Total Harmonic Distortion + Noise RL = 2kΩ RL = 600Ω IMD GBWP SR FPBW Intermodulation Distortion Gain Bandwidth Product Slew Rate Full Power Bandwidth VOUT = 1VP-P, –3dB referenced to output magnitude at f = 1kHz AV = –1, 10V step, CL = 100pF 0.1% error range fBW = 20Hz to 20kHz f = 1kHz f = 10Hz f = 1kHz f = 10Hz VS = ±18V VS = ±22V AV = 1, VOUT = 3VRMS Two-tone, 60Hz & 7kHz 4:1 0.00003 0.00003 0.00005 55 ±20 10 45 ±15 % (max) 0.00009 % MHz (min) V/μs (min) MHz Typical (Note 6) Limit (Note 7) Units (Limits) ts Settling time Equivalent Input Noise Voltage 1.2 0.34 2.5 6.4 1.6 3.1 ±0.12 ±0.14 0.1 120 120 10 0.2 11 +17.1 –16.9 +21.0 –20.8 (V+) – 2.0 (V-) + 2.0 65 ±0.7 0.65 4.7 μs μVRMS (max) en Equivalent Input Noise Density in Current Noise Density Offset Voltage  nV/√Hz (max)  pA/√Hz mV (max) mV (max) μV/°C dB (min) nA (max) nA/°C nA (max) V (min) V (min) V (min) V (min) VOS ΔVOS/ΔTemp PSRR IB ΔIOS/ΔTemp IOS Average Input Offset Voltage Drift vs –40°C ≤ TA ≤ 85°C Temperature Average Input Offset Voltage Shift vs VS = ±18V, ΔVS = 24V (Note 8) Power Supply Voltage VS = ±22V, ΔVS = 30V Input Bias Current Input Bias Current Drift vs Temperature Input Offset Current VCM = 0V –40°C ≤ TA ≤ 85°C VCM = 0V VS = ±18V 110 72 VIN-CM Common-Mode Input Voltage Range VS = ±22V 3 www.national.com LME49870 LME49870 Symbol Parameter VS = ±18V CMRR Common-Mode Rejection VS = ±22V Conditions Typical (Note 6) –12V≤Vcm≤12V –15V≤Vcm≤15V ZIN Differential Input Impedance Common Mode Input Impedance –10V