7197

NTE7197
Integrated Circuit
High-Performance 68W Audio Power Amplifier w/Mute
Description:
The NTE7197 is a high-performance audio power amplifier in an 11-Lead Staggered SIP type package
capable of delivering 68W of continuous average power to a 4Ω load and 38W into 8Ω with 0.1% THD+N
from 20Hz to 20kHz.
The performance of the NTE7197, utilizing proprietary protection circuitry, puts it in a class above
discrete and hybrid amplifiers by providing an inherently, dynamically protected Safe Operating
Area (SOA). This protection means that these devices are completely safeguarded at the output
against overvoltage, undervoltage, overloads, including shorts to the supplies, thermal runaway,
and instantaneous temperature peaks.
The NTE7197 maintains an excellent signal-to-noise ratio of greater than 92dB with a typical low
noise floor of 2.0μV. It exhibits extremely low THD+N values of 0.03% at the rated output into the rated
load over the audio spectrum, and provides excellent linearity with an IMD (SMPTE) typical rating of
0.004%.
Features:
D Continuous Average Output Power:
68W into 4Ω at VCC = ±28V
38W into 8Ω at VCC = ±28V
50W into 8Ω at VCC = ±35V
D 135W Instantaneous Peak Output Power
Capability
D Signal-to-Noise Ratio ≥ 92dB
D An Input Mute Function
D Output Protection from a Short to GND or
to the Supplies via Internal Current Limiting
Circuitry
Applications:
D Component Stereo
D Compact Stereo
D Self-Powered Speakers
D Output Overvoltage Protection Against
Transients from Inductive Loads
D Supply Undervoltage Protection, not allow‐
ing Internal Biasing to occur when |VEE| +
|VCC| ≤ 12V, thus Eliminating Turn-On and
Turn-Off Transients
D Wide Supply Range: +20V to +90V
D Surround-Sound Amplifiers
D High-End Stereo TVs
Absolute Maximum Ratings: (Note 1, Note 2)
Supply Voltage, |V+| + |V-|
No Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94V
Input Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84V
Common Mode Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (V+ or V-) and |V+| + |V-| ≤ 80V
Differential Input Voltage (Note 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60V
Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally Limited
Power Dissipation (Note 4), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125W
ESD Susceptibility (Note 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3000V
Operating Junction Temperature (Note 6), TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150°C
Lead Temperature (During soldering, 10sec), TL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +260°C
Thermal Resistance, Junction-to-Case, RthJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1°C/W
Thermal Resistance, Junction-to-Ambient, RthJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43°C/W
Note 1. All voltages are measured with respect to the GND pin (Pin7), unless otherwise specified.
Note 2. Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.
Operating Ratings indicate conditions for which the device is functional, but do not guarantee
specific performance limits. Electrical Characteristics state DC and AC electrical specifica‐
tions under particular test conditions which guarantee specific performance limits. This as‐
sumes that the device is within the Operating Ratings. Specifications are not guaranteed for
parameters where no limit is given, however, the typical value is a good indication of device
performance.
Note 3. The differential input voltage Absolute Maximum Rating is based on supply voltages of
V+ = +40V and V- = -40V.
Note 4. For operating at case temperatures above +25°C, the device must be derated based on a
+150°C maximum junction temperature and a thermal resistance of RthJC = 1.0°C/W (junctionto-case).
Note 5. Human body model, 100pF discharged through a 1.5kΩ resistor.
Note 6. The operating junction temperature maximum is +150°C, however, the instantaneous sage
Operating Area temperature is +250°C.
Operating Ratings: (Note 1)
Supply Voltage, |V+| + |V-| . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +20 to +84V
Temperature Range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -20° to +85°C
Note 1. All voltages are measured with respect to the GND pin (Pin7), unless otherwise specified.
Electrical Characteristics: (TA = +25°C, V+ = +28V, V- = -28V, IMUTE = -0.5mA, RL = 4Ω, Note 1
unless otherwise specified)
Parameter
Power Supply Voltage
Symbol
Test Conditions
Min
Typ
Max
Unit
18
20
84
V
80
115
-
dB
|V+| + |V-| = 28V, RL = 4Ω
60
68
-
V
|V+| + |V-| = 28V, RL = 8Ω
30
38
-
W
|V+| + |V-| = 35V, RL = 8Ω
-
50
-
W
-
135
-
W
-
0.03
-
%
|V+| + |V-| VPin7 = V- ≥ 9V, Note 7
Mute Attenuation
AM
Pin8 Open or at 0V, Mute: ON
Current out of Pin8 > 0.5mA, Mute: OFF
Output Power
(Continuous Average)
PO
THD+N = 0.1% max,
f = 1kHz, f = 20kHz
Instantaneous Peak
Output Power
Peak PO
Total Harmonic Distortion
Plus Noise
THD+N
60W, RL = 4Ω, 30W, RL = 8Ω, 20Hz ≤ f ≤ 20kHz,
AV = 26dB
Note 1. All voltages are measured with respect to the GND pin (Pin7), unless otherwise specified.
Note 7. V- must have at least -9V at its pin with reference to GND in order for the undervoltage
protection circuitry to be disabled.
Electrical Characteristics (Cont'd): (TA = +25°C, V+ = +28V, V- = -28V, IMUTE = -0.5mA,
RL = 4Ω, Note 1 unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Slew Rate (Note 8)
SR
VIN = 2.0VP-P, tRISE = 2ns
8
19
-
V/μs
Total Quiescent Power
Supply Current
I+
VCM = 0V, VO = 0V, IO = 0A
-
50
85
mA
VOS
VCM = 0V, IO = 0A
-
1
10
mV
IB
VCM = 0V, IO = 0A
-
0.2
1.0
μA
Input Offset Current
IOS
VCM = 0V, IO = 0A
-
0.01
0.2
μA
Output Current Limit
IO
|V+| = |V-| = 20V, tON = 10ms, VO = 0V
7.0
11.5
-
A
|V+ - VO|, V+ = +28V, IO = +100mA
-
1.6
2.0
V
|VO - V-|, V- = -28V, IO = -100mA
-
2.5
3.0
V
V+ = 40V to 20V, V- = -40V, VCM = 0V, IO = 0mA
85
120
-
dB
V+ = 40V, V- = -40V to -20V, VCM = 0V, IO = 0mA
85
105
-
dB
V+ = 60V to 20V, V- = -20V to -60V,
VCM = 20V to -20V, IO = 0mA
85
110
-
dB
|V+| = |V-| = 28V, RL = 2kΩ, ΔVO = 40V
90
115
-
dB
|V+| = |V-| = 30V, fo = 100kHz, VIN = 50mVrms
2
8
-
MHz
IHF — A Weighting Filter, RIN = 600Ω (Input Re‐
ferred)
-
2
10
μV
Input Offset Voltage
Input Bias Current
Output Dropout Voltage (Note 9)
Power Supply Rejection Ratio
Common Mode Rejection Ratio
VOD
PSRR
CMRR
Open Loop Voltage Gain
AVOL
Gain-Bandwidth Product
GBWP
Input Noise
Signal-to-Noise Ratio
Intermodulation Distortion Test
eIN
SNR
IMD
A-Wieghted,
Measured at 1kHz,
RS = 25Ω
PO = 1W
-
92.5
-
dB
PO = 60W
-
110
-
dB
60Hz, 7kHz
4:1 (SMPTE)
-
0.004
-
%
1:1 (SMPTE)
-
0.009
-
%
Note 1. All voltages are measured with respect to the GND pin (Pin7), unless otherwise specified.
Note 8. The feedback compensation network limits th bandwidth of the closed-loop response and so
the slew rate will be reduced due o the high frequency roll-off. Without feedback compensation,
the slew rate is typically larger.
Note 9. The output dropout voltage is the supply voltage minus the clipping voltage.
Pin Connection Diagram
(Front View)
11 N.C.
10 VIN +
9 VIN 8
Mute
7
GND
6
N.C.
5
V+
4
V-
3
Output
2
N.C.
1
V+
.177 (4.49)
.793 (20.14) Max
.130 (3.3)
.192
(4.87)
.771
(19.58)
.150 (3.81) Dia
.866
(22.0)
.860
(21.84)
.419
(10.64)
1
11
.067 (1.7)
.670 (17.02)
.200 (5.08)
.169
(4.29)
Similar pages
7241