NTE NTE1687

NTE1687
Linear Integrated Circuit
Dual, 2.5W (7.8W BTL) Audio Amp
Description:
The NTE1687 is a high performance stereo power amplifier in an 11–Lead SIP type package designed to deliver 1W/Ch into 4Ω or 2W bridged monaural into 8Ω. It is ideal for sensitive AM radio
applications, exhibiting lower wideband noise, lower distortion, and less AM radiation than conventional designs.
Features:
D Low AM Radiation
D Low Noise
D 3V, 4Ω, Stereo PO = 250mW
D Wide Supply Operation: 3V to 15V
D Low Distortion
D PO = 9W Bridged
Applications:
D Compact AM/FM Radios
D Stereo Tape Recorders and Players
D High Power Portable Stereos
Absolute Maximum Ratings:
Supply Voltage, VS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V
Junction Temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150°C
Operating Temperature Range (Note 1), Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to +70°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to +150°C
Lead Temperature (During Soldering, 10 sec), TL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +260°C
Note 1. For operation at ambient temperature greater than +25°C, the NTE1687 must be derated
based on a maximum +150°C junction temperature using a thermal resistance which depends upon mounting techniques,
Electrical Characteristics: (TA = 25°C, AV = 200 (46dB), TTAB = 25°C, VS = 12V, RL = 8Ω,
unless otherwise specified)
Parameter
Supply Current
Test Conditions
Min
Typ
Max
Unit
–
25
40
mA
3
–
15
V
VS = 12V, RL = 8Ω Dual Mode
2.0
2.5
–
W/Ch
VS = 12V, RL = 8Ω Bridge Mode
7.2
9.0
–
W
VS = 9V, RL = 4Ω Bridge Mode
–
7.8
–
W
VS = 9V, RL = 4Ω Dual Mode
–
2.5
–
W/Ch
PO = 50mW
–
0.09
–
%
PO = 0.5W
–
0.11
–
PO = 1W
–
0.14
–
PO = 0W, Dual Mode
Operating Supply Voltage
Output Power
Distortion
THD = 10%,
f = 1kHz
f = 1kHz
Power Supply Rejection Ratio
(PSRR)
CBY = 100µF, f = 1kHz, CIN = 0.1µF, Output Referred,
VRIPPLE = 250mV
–40
–54
–
dB
Channel Separation
CBY = 100µF, f = 1kHz, CIN = 0.1µF, Output Referred
–50
–64
–
dB
Noise
Equivalent
Input Noise
RS = 0
CIN = 0.1µF, BW = 20 – 20kHz
–
1.4
–
µV
CCIR/ARM
–
1.4
–
Wideband
–
2.0
–
DC Output Level
5.6
6
6.4
V
Input Impedance
50
100
350
kΩ
Input Offset Voltage
–
5
–
mV
Voltage Difference between
Outputs
–
10
20
mV
Input Bias Current
–
120
–
nA
Pin Connection Diagram
(Front View)
11 Bypass
10 Output 1
9 Bootstrap 1
8 (–) Input 1
7 (+) Input 1
6 GND
5 (+) Input 2
4 (–) Input 2
3 Bootstrap 2
2 Output 2
1 (+) VS
1.120 (28.45)
.220
(5.58)
.880 (22.35)
.440
(11.18)
.820
(20.83)
.130 (3.3) Dia (2 Places)
.350
(8.89)
1
11
.125
(3.18)
.100 (2.54)
.130
(3.3)
.009
(.229)