LT1115_1 Datasheet, PDF (11/16 Pages) Linear Integrated Systems – Ultralow Noise, Low Distortion, Audio Op Amp

TYPICAL APPLICATIO S
LT1115
18V
– 18V
GAIN: 40dB
30dB
24.9Ω
75Ω
100pF
2.49k
INPUT
0.01µF 100Ω
2^– 7
3 +^LT1115
4
100µF
35V
100k
18V
– 18V
100µF _{RESISTORS 1% METAL FILM}
35V _{CAPACITORS—BYPASS: LOW ESR}
OTHER: HIGH QUALITY FILM
NOTE 1: USE SINGLE POINT
GROUNDING TECHNIQUES
18V
+ _1µF
35V
6
475Ω
OUTPUT
TO
RIAA
STAGE
1M
7
3
6
LT1097
2
1M
1µF
100V
4
1µF
100V
1µF
– 18V
35V
LT1115 • TA06
Figure 3. RIAA Moving Coil “Pre-Pre” Amplifier
(40/30dB Gain Low Noise Servo’d Amplifier)
CCIF IMD Test (Twin Tones at 13
and 14kHz) (Figure 3)
0.1
T_A = 25^°C
V_S = ± 18V
R_L = 100k
0.010
0.001
0.0001
0.1
1
10
OUTPUT AMPLITUDE (V_RMS)
LT1115 • TA08
Noise vs Frequency (Figure 3)
10µ
T_A = 25°C
V_S = ±18V
INPUT GROUNDED
1µ
100n
10n
20
100
1k
20k
FREQUENCY (Hz)
NOTE: NOISE AT 1kHz REFERRED TO INPUT ~2nV
LT1115 • TA09
1115fa
11