LHV870 44V Single High Performance, High Voltage Operational Amplifier General Description ■ Gain Bandwidth Product 55MHz (typ) The LHV870 is an ultra-low distortion, low noise, high slew rate operational amplifier optimized and fully specified for high performance, high voltage applications. Combining advanced leading-edge process technology with state-of-the-art circuit design, the LHV870 operational amplifier delivers superior signal amplification for outstanding performance. The LHV870 combines extremely low voltage noise density (2.7nV/√Hz) with vanishingly low DC Gain Linearity Error (0.000009%) to easily satisfy the most demanding applications. To ensure that the most challenging loads are driven without compromise, the LHV870 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 LHV870's outstanding CMRR (120dB), PSRR (120dB), and VOS (0.1mV) give the amplifier excellent DC performance. The LHV870 operates over a wide supply range of ±2.5V to ±22V and is unity gain stable. This operational amplifier achieves outstanding AC performance while driving complex loads with values as high as 100pF. The LHV870 is available in 10-lead LLP package. ■ Open Loop Gain (RL = 600Ω) 140dB (typ) Key Specifications ■ Power Supply Voltage Range ■ Input Noise Density ■ Slew Rate 10nA (typ) ■ Input Offset Voltage 0.1mV (typ) ■ DC Gain Linearity Error 0.000009% ■ THD+N (AV = 1, VOUT = 3VRMS, fIN = 1kHz) RL = 2kΩ 0.00003% (typ) RL = 600Ω 0.00003% (typ) Features ■ Easily drives 600Ω loads ■ Output short circuit protection ■ PSRR and CMRR exceed 120dB (typ) Applications ■ Low noise industrial applications including test, measurement, and ultrasound ■ High quality audio amplification ■ High fidelity preamplifiers, phono preamps, and multimedia ±2.5V to ±22V 2.7nV/√Hz (typ) ±20V/μs (typ) 301257h6 © 2012 Texas Instruments Incorporated ■ Input Bias Current 301257 SNOSB50A ■ High performance professional audio ■ High fidelity equalization and crossover networks with active filters ■ High performance line drivers and receivers 301257j1 www.ti.com LHV870 44V Single High Performance, High Voltage Operational Amplifier January 5, 2012 LHV870 Connection Diagrams 30125705 Order Number LHV870LC See NS Package Number — LCB10A LHV870 Top Mark 30125704 XY = 2 Digit Date Code TT = Lot Tracebaility ZD1 = LHV870LC Ordering Information Ordering Information Table Package Package Drawing Number Transport Media MSL Level Green Status LHV870LC 10 Lead LLP LCB10A 1000 units on tape and reel 1 NOPB LHV870LCX 10 Lead LLP LCB10A 4500 units on tape and reel 1 NOPB Order Number www.ti.com 2 2) If Military/Aerospace specified devices are required, please contact the Texas Instruments 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) 200V 100V 150°C θJA (LLP) 46V −65°C to 150°C (V-) - 0.7V to (V+) + 0.7V Continuous Internally Limited 2000V 168°C/W Operating Ratings Temperature Range TMIN ≤ TA ≤ TMAX Supply Voltage Range −40°C ≤ TA ≤ 85°C ±2.5V ≤ VS ≤ ±22V Electrical Characteristics for the LHV870 (Note 1) The following specifications apply for VS = ±18V and ±22V, RL = 2kΩ, RSOURCE = 10Ω, fIN = 1kHz, TA = 25°C, unless otherwise specified. LHV870 Symbol Parameter Conditions Typical Limit (Note 6) (Note 7) Units (Limits) AV = 1, VOUT = 3VRMS THD+N Total Harmonic Distortion + Noise IMD Intermodulation Distortion GBWP Gain Bandwidth Product 55 SR Slew Rate ±20 V/μs 10 MHz μs RL = 2kΩ AV = 1, VOUT = 3VRMS Two-tone, 60Hz & 7kHz 4:1 0.00003 % 0.00005 % 45 MHz (min) FPBW Full Power Bandwidth VOUT = 1VP-P, –3dB referenced to output magnitude at f = 1kHz ts Settling time AV = –1, 10V step, CL = 100pF 0.1% error range 1.2 Equivalent Input Noise Voltage fBW = 20Hz to 20kHz 0.34 0.65 μVRMS Equivalent Input Noise Density f = 1kHz 2.5 4.7 nV/√Hz in Current Noise Density f = 1kHz 1.6 VOS Offset Voltage ΔVOS/ΔTemp Average Input Offset Voltage Drift vs Temperature –40°C ≤ TA ≤ 85°C PSRR Average Input Offset Voltage Shift vs Power Supply Voltage VS = ±18V, ΔVS = 24V (Note 8) VS = ±22V, ΔVS = 30V 120 120 110 IB Input Bias Current VCM = 0V 10 300 ΔIOS/ΔTemp Input Bias Current Drift vs Temperature –40°C ≤ TA ≤ 85°C 0.2 IOS Input Offset Current VCM = 0V 11 VS = ±18V +17.1 –16.9 VS = ±22V +21.0 –20.8 en VIN-CM VS = ±18V ±0.12 VS = ±22V ±0.14 Common-Mode Input Voltage Range VS = ±18V CMRR Common-Mode Rejection –12V≤VCM≤12V VS = ±22V –15V≤VCM≤15V 3 (max) pA/√Hz mV ±2 mV (max) μV/°C 0.1 dB (min) nA (max) nA/°C 100 nA (max) V V (V+) – 2.0 (V-) + 2.0 120 120 (max) V (min) V (min) dB 110 dB (min) www.ti.com LHV870 ESD Rating (Note 5) Pins 1, 4, 7 and 8 Pins 2, 3, 5 and 6 Junction Temperature Thermal Resistance Absolute Maximum Ratings (Note 1, Note LHV870 LHV870 Symbol ZIN Parameter Conditions Differential Input Impedance Common Mode Input Impedance Typical Limit (Note 6) (Note 7) Units (Limits) 30 kΩ 1000 MΩ 140 dB RL = 2kΩ 140 dB RL = 600Ω VS = ±18V VS = ±22V ±16.7 ±20.4 RL = 2kΩ VS = ±18V VS = ±22V ±17.0 ±21.0 RL = 600Ω VS = ±20V VS = ±22V ±31 ±37 –10V<VCM<10V VS = ±18V –12V≤VOUT≤12V AVOL Open Loop Voltage Gain RL = 2kΩ VS = ±22V –15V≤VOUTt≤15V VOUTMAX IOUT Maximum Output Voltage Swing Output Current ±19.0 V V ±30 +53 –42 IOUT-CC Instantaneous Short Circuit Current ROUT Output Impedance fIN = 10kHz Closed-Loop Open-Loop IS Total Quiescent Current IOUT = 0mA mA mA (min) mA Ω Ω 0.01 13 5 V V (min) 6.5 mA (max) Note 1: “Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur, including inoperability and degradation of device reliability and/or performance. Functional operation of the device and/or non-degradation at the Absolute Maximum Ratings or other conditions beyond those indicated in the Recommended Operating Conditions is not implied. The Recommended Operating Conditions indicate conditions at which the device is functional and the device should not be operated beyond such conditions. All voltages are measured with respect to the ground pin, unless otherwise specified. Note 2: The Electrical Characteristics tables list guaranteed specifications under the listed Recommended Operating Conditions except as otherwise modified or specified by the Electrical Characteristics Conditions and/or Notes. Typical specifications are estimations only and are not guaranteed. Note 3: The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, θJA, and the ambient temperature, TA. The maximum allowable power dissipation is PDMAX = (TJMAX - TA) / θJA or the number given in Absolute Maximum Ratings, whichever is lower. Note 4: Human body model, applicable std. JESD22-A114C. Note 5: Machine model, applicable std. JESD22-A115-A. Note 6: Typical values represent most likely parametric norms at TA = +25ºC, and at the Recommended Operation Conditions at the time of product characterization and are not guaranteed. Note 7: Datasheet min/max specification limits are guaranteed by test or statistical analysis. Note 8: PSRR is measured as follows: For VS, VOS is measured at two supply voltages, ±7V and ±22V, PSRR = |20log(ΔVOS / ΔVS)|. www.ti.com 4 LHV870 Typical Performance Characteristics THD+N vs Output Voltage VCC = 15V, VEE = –15V RL = 2kΩ THD+N vs Output Voltage VCC = 12V, VEE = –12V RL = 2kΩ 301257k6 301257k7 THD+N vs Output Voltage VCC = 22V, VEE = –22V RL = 2kΩ THD+N vs Output Voltage VCC = 2.5V, VEE = –2.5V RL = 2kΩ 301257k8 301257i4 THD+N vs Output Voltage VCC = 15V, VEE = –15V RL = 600Ω THD+N vs Output Voltage VCC = 12V, VEE = –12V RL = 600Ω 301257k9 301257l0 5 www.ti.com LHV870 THD+N vs Output Voltage VCC = 22V, VEE = –22V RL = 600Ω THD+N vs Frequency VCC = 15V, VEE = –15V, VOUT = 3VRMS RL = 2kΩ 301257l1 30125763 THD+N vs Frequency VCC = 12V, VEE = –12V, VOUT = 3VRMS RL = 2kΩ THD+N vs Frequency VCC = 22V, VEE = –22V, VOUT = 3VRMS RL = 2kΩ 30125762 30125764 THD+N vs Frequency VCC = 15V, VEE = –15V, VOUT = 3VRMS RL = 600Ω THD+N vs Frequency VCC = 12V, VEE = –12V, VOUT = 3VRMS RL = 600Ω 30125759 www.ti.com 301257k3 6 LHV870 THD+N vs Frequency VCC = 22V, VEE = –22V, VOUT = 3VRMS RL = 600Ω Voltage Noise Density vs Frequency 301257h6 30125760 Current Noise Density vs Frequency PSRR+ vs Frequency VCC = 15V, VEE = –15V RL = 2kΩ, VRIPPLE = 200mVpp 301257h7 301257p7 PSRR- vs Frequency VCC = 15V, VEE = –15V RL = 2kΩ, VRIPPLE = 200mVpp PSRR+ vs Frequency VCC = 17V, VEE = –17V RL = 2kΩ, VRIPPLE = 200mVpp 301257r2 301257q0 7 www.ti.com LHV870 PSRR- vs Frequency VCC = 17V, VEE = –17V RL = 2kΩ, VRIPPLE = 200mVpp PSRR+ vs Frequency VCC = 12V, VEE = –12V RL = 2kΩ, VRIPPLE = 200mVpp 301257r2 301257p4 PSRR- vs Frequency VCC = 12V, VEE = –12V RL = 2kΩ, VRIPPLE = 200mVpp PSRR+ vs Frequency VCC = 22V, VEE = –22V RL = 2kΩ, VRIPPLE = 200mVpp 301257q9 301257q3 PSRR- vs Frequency VCC = 22V, VEE = –22V RL = 2kΩ, VRIPPLE = 200mVpp PSRR+ vs Frequency VCC = 15V, VEE = –15V RL = 600Ω, VRIPPLE = 200mVpp 301257p9 301257r8 www.ti.com 8 LHV870 PSRR- vs Frequency VCC = 15V, VEE = –15V RL = 600Ω, VRIPPLE = 200mVpp PSRR+ vs Frequency VCC = 17V, VEE = –17V RL = 600Ω, VRIPPLE = 200mVpp 301257q2 301257r4 PSRR+ vs Frequency VCC = 15V, VEE = –15V RL = 10kΩ, VRIPPLE = 200mVpp PSRR- vs Frequency VCC = 15V, VEE = –15V RL = 10kΩ, VRIPPLE = 200mVpp 301257p8 301257r3 PSRR+ vs Frequency VCC = 17V, VEE = –17V RL = 10kΩ, VRIPPLE = 200mVpp PSRR- vs Frequency VCC = 17V, VEE = –17V RL = 10kΩ, VRIPPLE = 200mVpp 301257q1 301257r6 9 www.ti.com LHV870 PSRR+ vs Frequency VCC = 12V, VEE = –12V RL = 10kΩ, VRIPPLE = 200mVpp PSRR- vs Frequency VCC = 12V, VEE = –12V RL = 10kΩ, VRIPPLE = 200mVpp 301257p5 301257r0 PSRR+ vs Frequency VCC = 22V, VEE = –22V RL = 10kΩ, VRIPPLE = 200mVpp PSRR- vs Frequency VCC = 22V, VEE = –22V RL = 10kΩ, VRIPPLE = 200mVpp 301257q4 301257r9 PSRR+ vs Frequency VCC = 2.5V, VEE = –2.5V RL = 10kΩ, VRIPPLE = 200mVpp PSRR- vs Frequency VCC = 2.5V, VEE = –2.5V RL = 10kΩ, VRIPPLE = 200mVpp 301257p2 www.ti.com 301257q7 10 LHV870 CMRR vs Frequency VCC = 15V, VEE = –15V RL = 2kΩ CMRR vs Frequency VCC = 12V, VEE = –12V RL = 2kΩ 301257f7 301257g0 CMRR vs Frequency VCC = 22V, VEE = –22V RL = 2kΩ Output Voltage vs Load Resistance VCC = 15V, VEE = –15V THD+N = 1% 301257h1 301257g3 Output Voltage vs Load Resistance VCC = 12V, VEE = –12V THD+N = 1% Output Voltage vs Load Resistance VCC = 22V, VEE = –22V THD+N = 1% 301257h0 301257h2 11 www.ti.com LHV870 Output Voltage vs Load Resistance VCC = 2.5V, VEE = –2.5V THD+N = 1% Output Voltage vs Total Power Supply Voltage RL = 2kΩ, THD+N = 1% 30125707 301257g9 Output Voltage vs Total Power Supply Voltage RL = 600Ω, THD+N = 1% Power Supply Current vs Total Power Supply Voltage RL = 2kΩ 30125709 30125713 Full Power Bandwidth vs Frequency VS = ±18V, RL = 2kΩ Gain Phase vs Frequency VS = ±18V, RL = 2kΩ 301257j0 www.ti.com 301257j1 12 LHV870 Small-Signal Transient Response AV = 1, CL = 10pF Small-Signal Transient Response AV = 1, CL = 100pF 301257i7 301257i8 13 www.ti.com LHV870 the error signal (distortion) is amplified by a factor of 101. Although the amplifier’s closed-loop gain is unaltered, the feedback available to correct distortion errors is reduced by 101, which means that measurement resolution increases by 101. To ensure minimum effects on distortion measurements, keep the value of R1 low as shown in Figure 1. This technique is verified by duplicating the measurements with high closed loop gain and/or making the measurements at high frequencies. Doing so produces distortion components that are within the measurement equipment’s capabilities. This datasheet’s THD+N and IMD values were generated using the above described circuit connected to an Audio Precision System Two Cascade. Application Information DISTORTION MEASUREMENTS The vanishingly low residual distortion produced by LHV870 is below the capabilities of all commercially available equipment. This makes distortion measurements just slightly more difficult than simply connecting a distortion meter to the amplifier’s inputs and outputs. The solution, however, is quite simple: an additional resistor. Adding this resistor extends the resolution of the distortion measurement equipment. The LHV870’s low residual distortion is an input referred internal error. As shown in Figure 1, adding the 10Ω resistor connected between the amplifier’s inverting and non-inverting inputs changes the amplifier’s noise gain. The result is that 301257k4 FIGURE 1. THD+N and IMD Distortion Test Circuit www.ti.com 14 a resistor in series with the output. This resistor will also prevent excess power dissipation if the output is accidentally shorted. 30125727 Complete shielding is required to prevent induced pick up from external sources. Always check with oscilloscope for power line noise. Noise Measurement Circuit Total Gain: 115 dB @f = 1 kHz Input Referred Noise Voltage: en = V0/560,000 (V) RIAA Preamp Voltage Gain, RIAA Deviation vs Frequency Flat Amp Voltage Gain vs Frequency 30125728 30125729 15 www.ti.com LHV870 The LHV870 is a high speed op amp with excellent phase margin and stability. Capacitive loads up to 100pF will cause little change in the phase characteristics of the amplifiers and are therefore allowable. Capacitive loads greater than 100pF must be isolated from the output. The most straightforward way to do this is to put LHV870 TYPICAL APPLICATIONS NAB Preamp NAB Preamp Voltage Gain vs Frequency 30125731 30125730 AV = 34.5 F = 1 kHz En = 0.38 μV A Weighted Balanced to Single Ended Converter Adder/Subtracter 30125733 VO = V1 + V2 − V3 − V4 30125732 VO = V1–V2 Sine Wave Oscillator 30125734 www.ti.com 16 LHV870 Second Order High Pass Filter (Butterworth) Second Order Low Pass Filter (Butterworth) 30125736 30125735 Illustration is f0 = 1 kHz Illustration is f0 = 1 kHz State Variable Filter 30125737 Illustration is f0 = 1 kHz, Q = 10, ABP = 1 17 www.ti.com LHV870 AC/DC Converter 30125738 2 Channel Panning Circuit (Pan Pot) Line Driver 30125740 30125739 www.ti.com 18 LHV870 Tone Control 30125741 Illustration is: fL = 32 Hz, fLB = 320 Hz fH =11 kHz, fHB = 1.1 kHz 30125742 RIAA Preamp 30125703 Av = 35 dB En = 0.33 μV S/N = 90 dB f = 1 kHz A Weighted A Weighted, VIN = 10 mV @f = 1 kHz 19 www.ti.com LHV870 Balanced Input Mic Amp 30125743 Illustration is: V0 = 101(V2 − V1) www.ti.com 20 LHV870 10 Band Graphic Equalizer 30125744 fo (Hz) C1 C2 R1 R2 32 0.12μF 4.7μF 75kΩ 500Ω 64 0.056μF 3.3μF 68kΩ 510Ω 125 0.033μF 1.5μF 62kΩ 510Ω 250 0.015μF 0.82μF 68kΩ 470Ω 500 8200pF 0.39μF 62kΩ 470Ω 1k 3900pF 0.22μF 68kΩ 470Ω 2k 2000pF 0.1μF 68kΩ 470Ω 4k 1100pF 0.056μF 62kΩ 470Ω 8k 510pF 0.022μF 68kΩ 510Ω 16k 330pF 0.012μF 51kΩ 510Ω Note 9: At volume of change = ±12 dB Q = 1.7 Reference: “AUDIO/RADIO HANDBOOK”, National Semiconductor, 1980, Page 2–61 21 www.ti.com LHV870 Headphone Amplifier 30125710 www.ti.com 22 LHV870 Revision History Rev Date 1.0 05/25/11 Description Initial WEB released. 1.01 12/16/11 Changed the package from LCE10A to LCB10A. 1.02 01/04/12 Re-composed the document to reveal the LCB10A (revB) package. 23 www.ti.com LHV870 Physical Dimensions inches (millimeters) unless otherwise noted LLP Package Order Number LHV870LC NS Package Number LCB10A www.ti.com 24 LHV870 Notes 25 www.ti.com LHV870 44V Single High Performance, High Voltage Operational Amplifier Notes www.ti.com IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. 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