NTE1085
Integrated Circuit
Low Noise Audio Preamp
Features:
D
Low Noise: V
NI
= 0.8
V
rms(Typ)
D
High Open Loop Voltage Gain: G
VO
= 92dB (Typ)
D
Low Distortion: THD = 0.1% (Max) at V
OUT
= 7V
rms
, G
V
= 40dB, f= 1kHz
Absolute Maximum Ratings: (T
A
= +25
C unless otherwise specified)
Supply Voltage, V
CC
42V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Dissipation, P
D
400mW
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Derate Above 25
C
4mW/
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Temperature Range, T
opr
30
to +75
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature Range, T
stg
55
to +125
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics: (V
CC
= 35V, T
A
= +25
C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Supply Current
I
CC
V
IN
= 0
3.5
6.0
mA
Voltage Gain
Open Loop
G
VO
V
IN
= 85dBm, f = 1kHz
87
92
dB
Closed Loop
G
V
V
OUT
= 7V
rms
, f = 1kHz
38
40
42
dB
Maximum Output Voltage
V
OM
f = 1kHz, THD = 0.1%
7.0
9.0
V
rms
Equivalent Input Noise Voltage
V
NI
RIAA Equalizer, R
g
= 2.2k
, f = 1kHz
0.8
1.8
V
rms
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