OP270Data SheetTYPICAL PERFORMANCE CHARACTERISTICS10109 TA = 25°CTA = 25°C8 VS = ±15VVS = ±15V)7)/√Hz6√HzV nA/(p5(YYITIT4NSNS EDEDE31EISISO N1/f CORNER = 5HzNOE2NTAG T1/f CORNER = 200HzL O VCURRE 4 7 00 00 2- 2- 35 35 00 1 00 0.11101001k101001k10kFREQUENCY (Hz)FREQUENCY (Hz) Figure 3. Voltage Noise Density vs. Frequency Figure 6. Current Noise Density vs. Frequency 540TVA = 25°CS = ±15V)30/√Hz V4n (20Y ITAT 10kHz) V µNS10E (DE3AT 1kHzGEAIST L0O NVOE AG–10T2L O V 5 –20 8 00 00 2- 2- 35 35 00 1 00 –300±5±10±15±20–75–50–250255075100125SUPPLY VOLTAGE (V)TEMPERATURE (°C) Figure 4. Voltage Noise Density vs. Supply Voltage Figure 7. Input Offset Voltage vs. Temperature 0.1Hz TO 10Hz NOISE5 TA = 25°CVS = ±15VA) µ4( E) IVAGDT LV/O3V00nT E SE (1FGFA2T LN O I E NGISE VO1O NCHA 9 00 T 2- 6 A = 25°C 35 -00 T 00 S = ±15V0 352 012345 00 TIME (1 sec/DIV)TIME (Minutes) Figure 5. 0.1 Hz to 10 Hz Input Voltage Noise Figure 8. Warm-Up Offset Voltage Drift Rev. F | Page 6 of 20 Document Outline Features Functional Block Diagrams General Description Table of Contents Revision History Specifications Electrical Specifications Absolute Maximum Ratings ESD Caution Typical Performance Characteristics Test Circuits Applications Information Voltage and Current Noise Total Noise and Source Resistance Noise Measurements Peak-to-Peak Voltage Noise Noise Measurement—Noise Voltage Density Noise Measurement—Current Noise Density Capacitive Load Driving and Power Supply Considerations Unity-Gain Buffer Applications Low Phase Error Amplifier Five-Band, Low Noise, Stereo Graphic Equalizer Digital Panning Control Dual Programmable Gain Amplifier Outline Dimensions Ordering Guide