LT1028/LT1128 Ultralow Noise Precision High Speed Op Amps FEATURES DESCRIPTION n Voltage Noise The LT 1028(gain of 1 stable)/LT1128(gain of +1 stable) 1.1nV/Hz Max at 1kHz achieve a new standard of excellence in noise performance 0.85nV/Hz Typ at 1kHz with 0.85nV/Hz 1kHz noise, 1.0nV/Hz 10Hz noise. This 1.0nV/Hz Typ at 10Hz ultralow noise is combined with excellent high speed 35nV Typ, 0.1Hz to 10Hz specifications (gain-bandwidth product is 75MHz for P-P n Voltage and Current Noise 100% Tested LT1028, 20MHz for LT1128), distortion-free output, and n Gain-Bandwidth Product true precision parameters (0.1V/C drift, 10V offset LT1028: 50MHz Min voltage, 30 million voltage gain). Although the LT1028/ LT1128: 13MHz Min LT1128 input stage operates at nearly 1mA of collector n Slew Rate current to achieve low voltage noise, input bias current LT1028: 11V/s Min is only 25nA. LT1128: 5V/s Min The LT1028/LT1128s voltage noise is less than the noise n Offset Voltage: 40V Max of a 50 resistor. Therefore, even in very low source n Drift with Temperature: 0.8V/C Max impedance transducer or audio amplifier applications, n Voltage Gain: 7 Million Min the LT1028/LT1128s contribution to total system noise n Available in 8-Lead SO Package will be negligible. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. APPLICATIONS n Low Noise Frequency Synthesizers n High Quality Audio n Infrared Detectors n Accelerometer and Gyro Amplifiers n 350 Bridge Signal Conditioning n Magnetic Search Coil Amplifiers n Hydrophone Amplifiers TYPICAL APPLICATION Ultralow Noise 1M TIA Photodiode Amplifier Voltage Noise vs Frequency 10 V = 15V 0.1F S 4.32k T = 25C + A V S MAXIMUM 1M 1/f CORNER = 14Hz D JFET 0.5pF TYPICAL NXP 1 BF862 S PHOTO 1/f CORNER = 3.5Hz DIODE V = ~0.4V + I 1M OUT PD SFH213 LT1028 1028 TA01 4.99k V S + V = 15V S V S 0.1 0.1 1 10 1k 100 FREQUENCY (Hz) 1028 TA02 1028fd 1 For more information www.linear.com/LT1028 VOLTAGE NOISE DENSITY (nV/Hz)LT1028/LT1128 ABSOLUTE MAXIMUM RATINGS (Note 1) Supply Voltage Operating Temperature Range 55C to 105C .................................................. 22V LT1028/LT1128AM, M (OBSOLETE) ... 55C to 125C 105C to 125C .................................................. 16V LT1028/LT1128AC, C (Note 11) ............40C to 85C Differential Input Current (Note 9) .......................25mA Storage Temperature Range Input Voltage ..............................Equal to Supply Voltage All Devices ......................................... 65C to 150C Output Short-Circuit Duration .......................... Indefinite Lead Temperature (Soldering, 10 sec.) ..................300C PIN CONFIGURATION TOP VIEW V TRIM OS 8 TOP VIEW + V TRIM 1 7 V OS V OS V OS 1 8 TRIM TRIM IN 2 6 OUT + IN 2 7 + V 3 + 3 5 OVER- +IN 6 +IN OUT 4 COMP OVER- V 4 5 V COMP (CASE) S8 PACKAGE H PACKAGE 8-LEAD PLASTIC SOIC 8-LEAD TO-5 METAL CAN T = 150C, = 140C/W JMAX JA T = 175C, = 140C/W, = 40C/W JMAX JA JC OBSOLETE PACKAGE TOP VIEW TOP VIEW V V OS OS 1 NC 1 16 NC 8 TRIM TRIM NC 2 15 NC IN 2 7 V+ + TRIM 3 14 TRIM 3 6 +IN OUT + OVER- IN 4 13 V 4 5 V COMP + +IN 5 12 OUT N8 PACKAGE OVER- V 6 11 8-LEAD PLASTIC DIP COMP T = 150C, = 150C/W JMAX JA NC 7 10 NC NC 8 9 NC J8 PACKAGE 8-LEAD CERAMIC DIP SW PACKAGE T = 175C, = 140C/W, = 40C/W JMAX JA JC 16-LEAD PLASTIC SOL T = 150C, = 130C/W JMAX JA OBSOLETE PACKAGE NOTE: THIS DEVICE IS NOT RECOMMENDED FOR NEW DESIGNS 1028fd 2 For more information www.linear.com/LT1028