824

NTE824
Integrated Circuit
Low Noise Dual Preamplifier
Description:
The NTE824 is a dual preamplifier for the amplification of low level signals in applications requiring
optimum noise performance. Each of the two amplifiers is completely independent, with an internal
power supply decoupler–regulator, providing 110dB supply rejection and 60dB channel separation.
Other outstanding features include high gain (104dB), large output voltage swing (VCC –2V)p–p, and
wide power bandwidth (75kHz, 20Vp–p). The device operates from a single supply across the wide
range of 9V to 30V.
The amplifiers are internally compensated for gains greater than 10.
Features:
D Low Noise: 1.0µV Total Input Noise
D High Gain: 104dB Open Loop
D Single Supply Operation
D Wide Supply Range: 9V to 30V
D Power Supply Rejection: 110dB
D Large Output Voltage Swing (VCC–2V)p–p
D Wide Bandwidth 15MHz Unity Gain
D Power Bandwidth 75kHz, 20Vp–p
D Internally Compensated
D Short Circuit Protected
Absolute Maximum Ratings:
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +30V
Power Dissipation (Note 1), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 660mW
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0° to +70°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C
Lead Temperature (During Soldering, 10sec), TL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +300°C
Note 1 For operation in ambient temperatures above 25°C, the device must be derated based on
a 150°C maximum junction temperature and a thermal resistance of 187°C/W junction to
ambient.
Electrical Characteristics: (TA = +25°C, VCC = 14V, unless otherwise specified)
Parameter
Test Conditions
Min
Typ
Max
Unit
Voltage Gain
Open Loop, f = 100Hz
–
160,000
–
Supply Current
VCC = 9V to 30V, RL = ∞
–
10
–
mA
50
100
–
kΩ
–
200
–
kΩ
–
0.5
3.1
µA
Input Resistance
Positive Input
Negative Input
Input Current, Negative Input
Output Resistance
Open Loop
–
150
–
Ω
Output Current
Source
–
8
–
mA
Sink
–
2
–
mA
Peak–to–Peak
–
VCC–2
–
V
–
15
–
MHz
Output Voltage Swing
Unity Gain Bandwidth
Large Signal Frequency Response
20VP–P (VCC > 24V), THD ≤ 1%
–
75
–
kHz
Maximum Input Voltage
Linear Operation
–
–
300
mVrms
Supply Rejection Ratio Input Referred
f = 1kHz
–
110
–
dB
Channel Separation
f = 1kHz
40
60
–
dB
Total Harmonic Distortion
60dB Gain, f = 1kHz
–
0.1
0.5
%
Total Equivalent Input Noise (Flat Gain Circuit)
10 to 10,000Hz
–
1.0
1.2
µVrms
Pin Connection Diagram
(+) Input 1 1
8 (+) Input 2
(–) Input 1 2
7 (–) Input 2
6 VCC
GND 3
Output 1 4
8
5 Output 2
5
.260 (6.6)
1
4
.390
(9.9)
Max
.300
(7.62)
.155
(3.93)
.100 (2.54)
.145 (3.68)
.300 (7.62)
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