FEATURES DESCRIPTIO U - Analog Devices

1 1LT11151115faUltralow Noise,Low Distortion, Audio Op Amp High Quality Audio Preamplifiers Low Noise Microphone Preamplifiers Very Low Noise Instrumentation Amplifiers Low Noise Frequency Synthesizers Infrared Detector Amplifiers Hydrophone Amplifiers Low Distortion OscillatorsRIAA Phonograph Preamplifier (40/60db Gain)Measured Deviation from RIAAR esponse. lnput at 1kHz = 1mVRMSPre-EmphasizedFREQUENCY (Hz)20 (dB) 18 VRS=25 TA=25 CMEASUREDCOMPUTERSIMULATEDLT1115 TA02 +INPUT(SELECTPER PHOTOCART-RIDGE)COMRIN (MM) 100 (MC)CIN3322118V18V7644 18V 18V18VV+V 18V1 F35V1 F35V470 F35V2200 F F FILM470 F35V1 F35V1 F35V100 562 499 330pF15nF52N4304*~250 SELECTFOR 2mA RESISTORS 1% *OR USE 2mA CURRENT SOURCE MM = MOVING MAGNET MC = MOVING COILBYPASS SUPPLIES WITH LOW ESR CAPSOTHER CAPS.

2 HIGH QUALITY 3900pF3900pFSINGLEPOINTBOARDGROUNDOPEN MMCLOSED MCCOM RLRBOOSTOUTPUTA1LT1115A2LT1010 CTLT1115 TA01+++++++FEATURESAPPLICATIO SUDESCRIPTIOUTYPICAL APPLICATIOU, LTC and LT are registered trademarks of Linear Technology Corporation. Voltage Noise: Hz Max at Hz Typ at 1kHz Voltage and Current Noise 100% Tested Gain-Bandwidth Product: 40 MHz Min Slew Rate: 10V/ s Min Voltage Gain: 2 Million Min Low THD at 10kHz, AV = 10, RL = 600 : = 7 VRMS Low IMD, CCIF Method, AV = +10: = 600 VO = 7 VRMSThe LT 1115 is the lowest noise audio operational ampli-fier available. This ultralow noise performance ( Hzat 1kHz) is combined with high slew rates (>15V/ s) andvery low distortion RIAA circuit shown below using the LT1115 has verylow distortion and little deviation from ideal RIAA response (see graph).

3 LT111521115faOperating Temperature Range .. 0 C to 70 CStorage Temperature Range .. 65 C to 150 CLead Temperature (Soldering, 10 sec) .. 300 CSupply Voltage .. 22 VDifferential Input Current (Note 5) .. 25mAInput Voltage .. Equal to Supply VoltageOutput Short-Circuit Duration .. Indefinite(Note 1)Consult LTC Marketing for parts specified with wider operating temperature VIEW8765 IN+INV OUTV+VOSTRIMVOSTRIMOVER-COMPN PACKAGE8-LEAD PDIPTJMAX = 115 C, JA = 130 C/WORDERPART NUMBERLT1115CN812345678 TOP VIEWSW PACKAGE16-LEAD PLASTIC SOTMAX = 115 C, JA = 130 C/W161514131211109 NCNCTRIM IN+INV NCNCNCTRIMV+OVERCOMPNCNCNCOUTPUTLT1115 CSWORDERPART NUMBERLT1115 POI01+ + ABSOLUTE AXI U RATI GSWWWUUPACKAGE DESCRIPTIOELECTRICAL CHARACTERISTICSVS = 18V, TA = 25 C, unless otherwise Harmonic Distortion at 10kHzAv = 10, VO = 7 VRMS, RL = 600< Distortion (CCIF)

4 Av = 10, VO = 7 VRMS, RL = 600< Offset Voltage(Note 2) 50200 VIOSI nput Offset CurrentVCM = 0V30200nAIBI nput Bias CurrentVCM = 0V 50 380nAenInput Noise Voltage Densityfo = 10Hz Hzfo = 1000Hz, 100% tested HzWideband NoiseDC to 20kHz 120nVRMSC orresponding Voltage Level 136dBre Noise Current Densityfo = Hz(Note 3)fo = 1000Hz, 100% HzInput Resistance Common Mode 250M Differential Mode15k Input Capacitance 5pFInput Voltage Range Mode Rejection VCM = 104 123dBRatioPSRRP ower Supply Rejection VS = 4V to 19V 104 126dBRatioAVOLL arge-Signal Voltage GainRL 2k , Vo = 20V/ VRL 1k , Vo = 13V 15V/ VRL 600 , Vo = 10V 10V/ VVOUTM aximum Output VoltageNo Load 2k VRL 600 VSRSlew RateAVCL = 11015V/ sGBWGain-Bandwidth Productfo = 20kHz (Note 4)

5 4070 MHzZoOpen Loop 0utput ImpedanceVo = 0, Io = 070 ISSupply = 18V, TA = 25 C, unless otherwise denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25 = 18V, unless otherwise Offset Voltage(Note 2) 75280 V VOS/ TAverage Input Offset V/ CIOSI nput Offset CurrentVCM = 0V 40300nAIBI nput Bias CurrentVCM = 0V 70 550nAInput Voltage Range 13 Mode RejectionVCM = 13V 100 120dBRatioPSRRP ower Supply RejectionVS = to 18V 100 123dBRatioAVOLL arge-Signal Voltage GainRL 2k , Vo = 13V 15V/ VRL 1k , Vo = 10V/ VVOUTM aximum Output VoltageNo Load 15 2k VRL 600 10 VISS upply Current 1: Absolute Maximum Ratings are those values beyond which the lifeof a device may be 2.

6 Input Offset Voltage measurements are performed by automatictest equipment approximately sec after application of 3: Current noise is defined and measured with balanced sourceresistors. The resultant voltage noise (after subtracting the resistor noiseon an RMS basis) is divided by the sum of the two source resistors toobtain current 4: Gain-bandwidth product is not tested. It is guaranteed by designand by inference from the slew rate 5: The inputs are protected by back-to-back diodes. Current limitingresistors are not used in order to achieve low noise. If differential inputvoltage exceeds , the input current should be limited to CHARACTERISTICSLT111541115faWideband Voltage Noise( to Frequency Indicated)RMS VOLTAGE NOISE ( V) (Hz) TPC02 1k10010k100k1M10 MVS = 18 VTA = 25 CWideband Noise, DC to Noise vs Matched SourceResistanceTHD + Noise vs Frequency(AV = 10)THD + Noise vs Frequency(AV = 100)THD + Noise vs Frequency(AV = 1000)THD + Noise vs Frequency(AV = 10)THD + Noise vs Frequency(AV = 100)THD + Noise vs Frequency(AV = 1000) V/DIVFREQUENCY (Hz)20 TOTAL HARMONIC DISTORTION + NOISE (%) = 10RL = 600 VIN = 2VP-P (700mVRMS)VOUT = 20VP-P (7 VRMS)

7 TA = 25 CVS = 18 VLT1115 TPC04 FREQUENCY (Hz) HARMONIC DISTORTION + NOISE (%)AV = 100RL = 600 VIN = 200mVP-P (70mVRMS)VOUT = 20VP-P (7 VRMS)TA = 25 CVS = 18 VLT1115 TPC05 FREQUENCY (Hz) HARMONIC DISTORTION + NOISE (%)AV = 1000RL = 600 VIN = 20mVP-P (7mVRMS)VOUT = 20VP-P (7 VRMS)TA = 25 CVS = 18 VLT1115 TPC06 FREQUENCY (Hz)20 TOTAL HARMONIC DISTORTION + NOISE (%) = 10RL = 600 VIN = 2VP-P (700mVRMS)VOUT = 20VP-P (7 VRMS)TA = 25 CVS = 18 VLT1115 TPC07 FREQUENCY (Hz) HARMONIC DISTORTION + NOISE (%)AV = 1000 VIN = 20mVP-P (7mVRMS)VOUT = 20VP-P (7 VRMS)TA = 25 CRL = 600VS = 18 VLT1115 TPC09 MATCHED SOURCE RESISTANCE, RS ( ) NOISE DENSITY (nV/ Hz)AT 1kHzAT 10Hz2 RS NOISE ONLYVS= 18 VTA=25 CLT1115 TPC03 RSRS+ TOTAL HARMONIC DISTORTION + NOISE (%) (Hz)201001k20kAV = 100 VIN = 200mVP-P (700 VRMS)VOUT = 20mVP-P (7 VRMS)TA = 25 CRL = 600VS = 18 VLT1115 TPC08 TYPICAL PERFOR A CE CHARACTERISTICS UW5LT11151115faSlew Rate, Gain-Bandwidth-Productvs Overcompensation CapacitorCCIF IMD Test (Twin EqualAmplitude Tones at 13 and 14kHz)* DISTORTION (at 1kHz) (%)OUTPUT AMPLITUDE (VRMS)

8 = 10RL = 600TA = 25 CVS = 18 VLT1115 TPC10 CCIF IMD Test (Twin EqualAmplitude Tones at 13 and 14kHz)* DISTORTION (at 1kHz) (%)OUTPUT AMPLITUDE (VRMS) = 10RL = 10kTA = 25 CVS = 18 VLT1115 TPC11 Total Noise vs Unmatched SourceResistanceCurrent Noise SpectrumFREQUENCY (Hz)10 CURRENT NOISE DENSITY (pA/ Hz) TPC141/f CORNER = 250 HzVoltage Noise vs TemperatureTEMPERATURE ( C)00 RMS VOLTAGE NOISE DENSITY (nV/ Hz) = 18 VAT 10 HzAT 1kHzLT1115 TPC15 SUPPLY VOLTAGE (V)0 5 10 1kHzTA = 25 CRMS VOLTAGE NOISE DENSITY (nV/ Hz)LT1115 TPC16 Voltage Noise vs Supply VoltageSupply Current vs TemperatureSUPPLY CURRENT (mA)101234567890 TEMPERATURE ( C)03015756045VS = 18 VVS = 15 VVS = 5 VLT1115 TPC17 Output Short-Circuit Currentvs Time*See CCIF Test Note at end of Typical Performance Characteristics.

9 TIME FROM OUTPUT SHORT TO GROUND (MINUTES) 50 SHORT-CIRCUIT CURRENT (mA)SINKING SOURCING 40 20 10001235020 30304010VS = 18V25 C25 CLT1115 TPC18 UNMATCHED SOURCE RESISTANCE, RS ( ) NOISE DENSITY (nV/ Hz)RSAT 1kHzAT 10 HzRS NOISE ONLYVS = 18 VTA = 25 CLT1115 TPC13 OVERCOMPENSATION CAPACITOR (pF)GAIN AT 20kHz1 SLEW RATE (V/ s) FROM PIN 5 TO PIN 6VS = 18 VTA = 25 CLT1115 TPC12 GWBSLEWTYPICAL PERFOR A CE CHARACTERISTICS UWLT111561115faCapacitance Load HandlingCommon Mode Limit OverTemperatureVoltage Gain vs Supply VoltageSUPPLY VOLTAGE (V)110100 VOLTAGE GAIN (V/ V)0 20 5 10 15TA = 25 CRL = 2k RL = 600 LT1115 TPC21 Voltage Gain vs Load ResistanceLOAD RESISTANCE (k ) GAIN (V/ V)10100110VS = 18 VTA = 25 CILMAX = 27mA AT 25 CLT1115 TPC22 Voltage Gain vs FrequencyFREQUENCY (Hz)20 VOLTAGE GAIN (dB)507010k100k1M10M100M060304010 10VS = 18 VTA = 25 CCL = 10pFGAINPHASE205070060304010 10 PHASE MARGIN (DEGREES)LT1115 TPC20 Gain, Phase vs FrequencyCommon Mode Rejection Ratiovs FrequencyPower Supply Rejection Ratiovs FrequencyFREQUENCY (Hz)VS = 18 VTA = 25 CPOWER SUPPLY REJECTION RATIO (dB)

10 06080100120140160204010k 100k TPC26 Large-Signal Transient ResponseFPOAV = 1RS = Rf = 2kCf = 30pF5V/DIVISION1 s/DIVISIONFREQUENCY (Hz) GAIN (dB)10k100k 1M 1001k100M 20060801001201401602040VS = 18 VTA = 25 CRL = 2kLT1115 TPC19 CAPACITIVE LOAD, CL (pF)10 OVERSHOOT (% )100100010000VS = 18 VTA = 25 C20507080060304010AV = 1, RS = 2k AV = 10RS = 200 AV = 100RS = 20 LT1115 TPC23+ RSCL30pF2k COMMON MODE LIMIT (V)REFERRED TO POWER SUPPLY 1 2 3 4+4+3+2+1V+VS = 18 VVS = 5 VVS = 5V TO 18V TEMPERATURE ( C)03015756045V LT1115 TPC24 FREQUENCY (Hz)COMMON MODE REJECTION RATIO (dB)10k100k1M10M101001k06080100120140204 0VS = 18 VTA = 25 CLT1115 TPC25 TYPICAL PERFOR A CE CHARACTERISTICS UW7LT11151115faFPOFPOS mall-Signal Transient ResponseMaximum Output vs Frequency(Power Bandwidth*)FREQUENCY (Hz)10k0 PEAK-TO-PEAK OUTPUT VOLTAGE (V)202530100k1M10M15105VS = 18 VTA = 25 CRL = 2k *POWER B