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LT1115CN8#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
LT1115
10
1115fa
NOTE 3: FOR BETTER NOISE PERFORMANCE AT
SLIGHTLY LESS DRIVE CAPABILITY: R1 = 43Ω,
R2 = 392Ω DELETE C1.
–
+
–
+
INPUT
18V
–18V
–18V
–18V
18V
18V
1µF
35V
1µF
35V
1µF
35V
1µF
35V
1µF
35V
1µF
35V
1µF
2N4304*
IN
100Ω
100Ω
100k
100k
~250Ω
SELECT
FOR 2mA
V
+
V
–
OUTPUT
R2
3
3
4
4
2
2
7
7
R
BOOST
49.9Ω
6
6
8
1
C1
33pF
33.2k
1%
33.2k
1%
1µF
R
L
909Ω
R1
LT1115
LT1010CT
LT1097
LT1115 • TA05
RESISTORS 1% METAL FILM
CAPACITORS – BYPASS; LOWER ESR
OTHER: POLYESTER OR OTHER
HIGH QUALITY FILM.
*OR USE 2mA CURRENT SOURCE.
NOTE 1: USE SINGLE POINT GROUND.
NOTE 2: USE ≥ 470µF CAPACITORS AT EACH
INCOMING SUPPLY TERMINAL (I.E. AT BOARD EDGE).
OPTIONAL SERVO LOOP
LOWERS OFFSET TO < 50µV
+
+
+
+
+
2mA
+
Figure 2. Low Noise DC Accurate x 10 Buffered Line Amplifier
THD + Noise vs Frequency
(Figure 2)
FREQUENCY (Hz)
20
0.0001
0.001
0.010
100
1k
20k
TOTAL HARMONIC DISTORTION + NOISE (%)
T
A
= 25
°
C
V
S
= ± 18V
V
IN
= 500mV
RMS
V
OUT
= 5V
RMS
R
S
= 10Ω
R
L
= 600Ω
LT1115 • TA07
TYPICAL APPLICATIO S
U
11
LT1115
1115fa
Figure 3. RIAA Moving Coil “Pre-Pre” Amplifier
(40/30dB Gain Low Noise Servo’d Amplifier)
Noise vs Frequency (Figure 3)
–
+
–
+
18V
18V
18V
–18V
–18V
– 18V
100k
100V
2.49k
100Ω
75Ω
475Ω
100µF
35V
1µF
35V
100µF
35V
INPUT
0.01µF
GAIN: 40dB
30dB
1µF
35V
1µF
100V
1µF
1M
1M
100pF
OUTPUT
TO
RIAA
STAGE
RESISTORS 1% METAL FILM
CAPACITORS—BYPASS: LOW ESR
OTHER: HIGH QUALITY FILM
3
3
2
2
7
7
6
6
4
4
24.9Ω
NOTE 1: USE SINGLE POINT
GROUNDING TECHNIQUES
LT1115
LT1097
LT1115 • TA06
+
+
+
+
FREQUENCY (Hz)
20
10n
NOISE (V)
100n
1µ
10µ
100 1k
20k
T
A
= 25
°
C
V
S
= ±18V
INPUT GROUNDED
NOTE: NOISE AT 1kHz REFERRED TO INPUT ~2nV
LT1115 • TA09
CCIF IMD Test (Twin Tones at 13
and 14kHz) (Figure 3)
OUTPUT AMPLITUDE (
V
RMS
)
0.1
0.0001
0.1
0.010
0.001
1
10
INTERMODULATION DISTORTION (AT 1kHz) (IMD) (%)
T
A
= 25
°
C
V
S
= ± 18V
R
L
= 100k
LT1115 • TA08
TYPICAL APPLICATIO S
U
LT1115
12
1115fa
Deviation from RIAA Response
Input at 1kHz = 232µV
RMS
Pre-Emphasized (Figure 4)
Figure 4. Moving Coil Passive RIAA Phonograph Pre-Amp
THD + Noise vs Frequency
Input at 1kHz = 232µV
RMS
Pre-Emphasized (Figure 4)
FREQUENCY (Hz)
20
TOTAL HARMONIC DISTORTION + NOISE (%)
0.010
100
1k
20k
0.001
0.1
V
S
= ±18V
R
L
= 100k
R
S
= 10Ω
T
A
= 25
°
C
LT1115 • TA12
DEVIATION (dB)
FREQUENCY (Hz)
20
–0.5000
0.50000
0.40000
0.30000
0.20000
0.10000
–0.4000
–0.3000
–0.2000
–0.1000
0.0
100
1k
20k
LT1115 • TA11
V
S
= ±18V
R
L
= 100k
R
S
= 10Ω
T
A
= 25°C
–
+
–
+
1µF
35V
1µF
35V
1µF
35V
470µF
35V
470µF
35V
1µF
35V
R2
C1
C2
0.483µF
100pF
2.49k
R1
6081Ω
100Ω
499Ω
490Ω
499Ω
100k
10k
12.1Ω
OUTPUT
3
2
7
6
4
3
2
7
6
4
RIAA NETWORK
MOVING COIL
INPUT
0.01µF
18V
–18V
4.7µFFILM
0.1645µF
RESISTORS 1% METAL FILM
CAPACITORS—BYPASS: LOW ESR
OTHER: HIGH QUALITY FILM
NOTE 1: 1kHz GAIN = 53dB
NOTE 2: IN RIAA NETWORK VALUES SHOWN
ARE MEASURED AND PRODUCE THE
“DEVIATION FROM RIAA” GRAPH SHOWN.
THE CALCULATED EXACT VALUES ARE:
R1-6249Ω C1-0.161µF
R2-504Ω C2-0.47µF
LT1115
LT1056
LT1115 • TA10
+
+
+
+
+
+
TYPICAL APPLICATIO S
U
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

LT1115CN8#PBF

Mfr. #:
Buy LT1115CN8#PBF
Manufacturer:
Analog Devices Inc.
Description:
Precision Amplifiers Ultra Low Noise Audio OA
Lifecycle:
New from this manufacturer.
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