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NTE807
Integrated Circuit
TV Sound Channel, 1W
Description:
The NTE807 is a complete 1Watt sound channel in a 16–Lead DIP type package and is ideally suited
for use in small screen TV or mobile FM radios. This device operates from a single 14V supply and
provides VCC/2 output tracking as well as greater than 20dB of ripple rejection. The NTE807 will directly drive an 8Ω or 18Ω speaker and has a true 1W output into the 8Ω load.
Features:
D Low Limiting Threshold
D Low External Parts Count
D High AM Rejection
D Single Adjustment Tuning
D 70dB Limiter Gain
D 70dB DC Voltage Control Range
D Automatic Thermal Shutdown
D Output Current Limiting
D 10V to 18V Operating Range
D > 20dB Ripple Rejection
Absolute Maximum Ratings:
Supply Voltage, V
Regulator Output Current, I
Input Voltage (Pin10), V
CC
REG
IN
Operating Temperature Range, T
Storage Temperature Range, T
S
+18V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
+4.0V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A
–40° to +85°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–65° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Static Electrical Characteristics: (TA = +25°C, VCC = 14V unless otherwise specified)
Parameter Symbol Test Pin Test Conditions Min Typ Max Unit
Quiescent Supply Current I
Terminal Voltage
V
V
V
CC
V
2
V
3
OUT
REG
V
IN
14,15
V
16
8 Vin = 0 20 35 55 mA
2 – 5.0 – V
3 – 2.5 – V
7 – 7.0 – V
9 7.0 8.0 9.0 V
10,11 – 1.4 – V
14,15 – 4.1 – V
16 – 4.5 – V
Dynamic Electrical Characteristics: (@ TA = 25°C, VCC = 14V, fo = 4.5MHz, fm = 400Hz,
∆f = 25kHz, Vin = 10mV, unless otherwise indicated)
Parameter Symbol Test Pin Test Conditions Min Typ Max Unit
Input Limiting Threshold V
TH
AM Rejection AMR 7 Note 2, m = 0.3 30 >50 – dB
Recovered Audio V
Output Distortion THD
OUT
D
7 Note 1 – 150 – µV
16 250 400 550 mV
16 – <1.0 3.0 %
Playthrough 7 V1 = 0V – 5.0 25 mV
Power Amp Voltage Gain A
Output Distortion THD
Output Current Limiting I
Output Tracking V
OUT/VCC
Output Noise e
Power Amp Input Impedance Z
Note 1.,Adjust V1 for V
Note 2. Adjust V1 for V
= 1.4V, then reduce Vin until V
out
= 1.4V
out
e
D
OUT
n
in
3–7 V
7 P
= 1.0V 25 27 29 dB
out
= 1.0W – 2.0 10 %
OUT
7 RL = 0Ω – 800 – mA
7/8 VCC = 10V to 18V – 0.5 – V/V
7 Vin = 0V, V1 = 10V – 5.0 25 mV
3 f = 1.0kHz – 50 – kΩ
= 1.0V (–3dB)
out
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Pin Connection Diagram
DC Volume Control
Detector Audio Output
Power Amp Audio Input
Audio Input
V
CC
16 9
1
2
3
F
i
n
6Audio GND
7
8
.202 (5.12)
16
De–Emphasis Tone Control
Phase Shift
15
14
Phase Shift
F
i
n
11 IF Input
IF Input
10
Regulator Output
9
.100 (2.54)
18
.770 (19.5) Max
.254 (6.45)
.168 (4.26) Max
.138
.141
(3.5)
(3.6)
.700 (17.78)
.300 (7.62)
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