Datasheet LT1115 (Analog Devices) - 9
| Manufacturer | Analog Devices |
| Description | Ultra-Low Noise, Low Distortion, Audio Op Amp |
| Pages / Page | 16 / 9 — TYPICAL APPLICATIO S. Figure 1. Balanced Transformerless Microphone … |
| File Format / Size | PDF / 252 Kb |
| Document Language | English |
TYPICAL APPLICATIO S. Figure 1. Balanced Transformerless Microphone Preamp. THD + Noise vs Frequency (Figure 1)
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LT1115
U TYPICAL APPLICATIO S
R1 R3 1k, 0.1% 316k, 0.1% 18V + 1µF 35V LOW ESR 4.7µF 2 7 – FILM 100 RP 1% 6 INPUT 30k LT1115 OUT 1% 3 + 4 1µF 35V 10k + LOW ESR 1% –18V NOTE: MATCH RESISTOR PAIRS R1 R3 R2 R4 = TO ± 0.1% 1k, 0.1% R2 316k, 0.1% R4 LT1115 • TA03
Figure 1. Balanced Transformerless Microphone Preamp THD + Noise vs Frequency (Figure 1)
1 TA = 25°C RL = 100kΩ VIN = 10mVRMS VOUT = 2.92VRMS RS = 150Ω 0.1 TOTAL HARMONIC DISTORTION + NOISE (%) 0.010 20 100 1k 20k FREQUENCY (Hz) LT1115 • TA04 1115fa 9
U TYPICAL APPLICATIO S
R1 R3 1k, 0.1% 316k, 0.1% 18V + 1µF 35V LOW ESR 4.7µF 2 7 – FILM 100 RP 1% 6 INPUT 30k LT1115 OUT 1% 3 + 4 1µF 35V 10k + LOW ESR 1% –18V NOTE: MATCH RESISTOR PAIRS R1 R3 R2 R4 = TO ± 0.1% 1k, 0.1% R2 316k, 0.1% R4 LT1115 • TA03
Figure 1. Balanced Transformerless Microphone Preamp THD + Noise vs Frequency (Figure 1)
1 TA = 25°C RL = 100kΩ VIN = 10mVRMS VOUT = 2.92VRMS RS = 150Ω 0.1 TOTAL HARMONIC DISTORTION + NOISE (%) 0.010 20 100 1k 20k FREQUENCY (Hz) LT1115 • TA04 1115fa 9
