7211

NTE7211 & NTE7212
Integrated Circuit
Class AB Audio Power Amplifier, 2 Channel
Description:
The NTE7211 and NTE7212 are audio power amplifier hybrid integrated circuits in a 15−Lead SIP
type package consisting of optimally−designed discrete component power amplifier circuits.
Features:
D Miniature Package
D Available in 2 Different Outputs (THD = 0.4%, f = 20Hz to 20kHz):
50W/Ch (NTE7211)
80W/Ch (NTE7212)
D Output Load Impedance: RL = 6Ω
D Allowable Load Shorted Time: 0.3 seconds
D Supports the Use of Standby, Muting, and Load Shorting Protection Circuits
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Maximum Supply Voltage (No Signal), VCCmax
NTE7211 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±54V
NTE7212 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±65V
Maximum Supply Voltage (RL = 6Ω), VCCmax
NTE7211 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±47V
NTE7212 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±57V
Recommended Supply Voltage (RL = 6Ω), VCC
NTE7211 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±32V
NTE7212 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±39V
Operating Junction Temperature (Note 1), TJmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150°C
Operating IC Substrate Temperature (Not 1), TCmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +125°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −30° to +125°C
Thermal Resistance, Junction−to−Case (Per Power Transistor), RthJC . . . . . . . . . . . . . . . . . 2.2°C/W
Allowable Load Shorted Time (RL = 6Ω, f = 50Hz), ts
NTE7211 (VCC = ±32V, PO = 50W) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3s
NTE7212 (VCC = ±39V, PO = 80W) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3s
Note 1. Both the TJmax and the TCmax conditions must be met.
Operating Characteristics: (TA = +25°C, RL = 6Ω (non−inductive load), Rg = 600Ω, VG = 30dB,
Note 2 unless otherwise specified)
Parameter
Output Power
NTE7211
Symbol
PO
VCC = ±32V
VCC = ±39V
NTE7212
Total Harmonic Distortion
Test Conditions
THD
VCC = ±32V,
VG = 30dB
Min
Typ
Max
Unit
f = 20Hz to 20kHz, THD = 0.4%
−
50
−
W
f = 1kHz, THD = 10%
−
80
−
W
f = 20Hz to 20kHz, THD = 0.4%
−
80
−
W
f = 1kHz, THD = 10%
−
120
−
W
f = 20Hz to 20kHz, PO = 1W
−
−
0.4
%
f = kkHz, PO = 5W
−
0.01
−
%
fL, fH
VCC = ±32V, PO = 1W, +0 −3dB
−
20 to 50k
−
Hz
ri
VCC = ±32V, f = 1kHz, PO = 1W
−
55
−
kΩ
Output Noise Voltage
VNO
VCC = ±39V, Rg = 2.2kΩ, Note 3
−
−
1.2
mVrms
Quiescent Current
ICCO
VCC = ±39V
10
40
80
mA
VN
VCC = ±39V
−70
0
+70
mV
Frequency Characteristics
Input Impedance
Neutral Voltage
Note 2. Unless otherwise noted, use a constant−voltage supply for the power supply used during
inspection.
Note 3. The output noise voltage values shown are peak values read with a VTM. However, an AC
stabilized (50Hz) power supply should be used to minimize the influence of AC primary side
flicker noise on the reading.
Pin Connection Diagram
(Front View)
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
Ch 2 Input
Ch 2 NF
Sub GND
Pre −VCC
Ch 2 −VE
Ch 2 +VE
−VCC
+VCC
Ch 1 −VE
Ch 1 +VE
Bias
Pre +VCC
No Pin
Ch 1 NF
Ch 1 Input
2.331 (59.2)
.335 (8.5)
2.050 (52.0)
1.220
(31.0)
.827
(21.0)
1
15
.197 (5.0)
.142 (3.6)
Dia
(2 Places)
.079 (2.0)
1.102 (28.0)