778S

NTE778S
Integrated Circuit
Dual Operational Amplifier
Description:
The NTE778S is an integrated circuit designed as a low noise preamplifier in audio equipment and
a general purpose operational amplifier in other electronic equipment. Two low noise operational amplifier circuits displaying internal phase−compensated high gain and low distortion are contained in
a 8−pin SIP for applications over a wide range as a general−purpose dual amplifier in general electronic equipment. The device can also be used as a single power type and amplifier in portable equipment. It is also suitable as a headphone amplifier because of its high load current.
Features:
D High gain, Low Distortion
GVO = 110dB, THE = 0.0015% (typ.)
D High Slew Rate, High fT
SR = 3.0V/µs, fT = 7MHz (typ.)
D Low Noise (RS = 1kΩ)
FLAT, VNI = 2µVrms (typ.)
RIAA, VNI = 1µVrms (typ.)
D Operation with Low Supply Voltage
VCC ≥ 4V (±2V)
D High Load Current, High Current Dissipation
ILP = ±50mA, PD = 800mW
Recommended Operating Conditions:
Supply Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±2 to ±16V
Rated Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±15
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Supply Voltage, VCC, . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±18V
Load Current, ILP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50mA
Differential Input Voltage, Vid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±30V
Common Input Voltage, Vic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±15V
Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 800mW
Thermal Dirating (TA ≥ 25°C), Kθ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8mW/°C
Ambient Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −20° to +75°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55° to +125°C
Electrical Characteristics: (TA = +25°, VCC = +15V, unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Circuit Current
ICC
Vin = 0
−
3.0
6.0
mA
Input Offset Voltage
VIO
RS ≤ 10kΩ
−
0.5
6.0
mV
Input Offset Current
IIO
−
5
200
nA
Input Bias Current
IIB
−
−
500
nA
Input Resistance
Rin
0.3
5
−
MΩ
Open Loop Voltage Gain
GVO
RL ≥ 2kΩ, VO = ±10V
86
110
−
dB
Maximum Output Voltage
VOM
RL ≥ 10kΩ
±12
±14
−
V
RL ≥ 2kΩ
±10
±13
−
V
±12
±14
−
V
Common Input Voltage Range
VCM
Common Mode Rejection Ratio
CMRR
RS ≤ 10kΩ
70
90
−
dB
Supply Voltage
SVRR
RS ≤ 10kΩ
−
30
150
µV/V
−
90
180
mW
−
3.0
−
V/µs
−
7
−
MHz
−
2.0
−
µVrms
Power Dissipation
Pd
Slew Rate
SR
Gain Bandwidth Product
fT
Input Referred Noise Voltage
VNL
GV = 0dB, RL 2kΩ
RS = 1kΩ, BW:1−Hz to 30Hz
Pin Connection Diagram
.768 (19.52) Max
8
V (+)
7
Output 2
6
Invert Input 2
5
Non−Invert Input 2
4
V (−)
3
Non−Invert Input 1
2
Invert Input 1
1
Output 1
.118 (3.0) Max
.264 (6.72)
Max
1
8
.165 (4.2)
Min
.100 (2.54) Typ
.700 (17.78)
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