Page 1
NTE1633
Integrated Circuit
TV Sound Channel w/DC Controls
Description:
The NTE1633 is a complete TV sound channel in a 20–Lead DIP type package with DC tone and volume controls plus separate VCR input and output connections. Supplied in a 20–pin DIP, the device
delivers an output power of 4W into 16Ω (d = 10%, VS = 24V) or 1.5W into 8Ω (d = 10%, VS = 12V).
Included in the NTE1633 are: IF amplifier limiter, active low–pass filter, AF preamplifier and power
amplifier, turnoff muting, mute circuit and thermal protection.
High output, high sensitivity, excellent AM rejection and low distortion make the device suitable for
use in TVs of almost any type. Further, no screening is necessary because the device is free of radiation problems.
Features:
D Separate VCR Input and Output Pins
D 4W Output Power into 16Ω
D No Screening Required
D High Sensitivity
D Excellent AM Rejection
D Low Distortion
D DC Tone/Volume Controls
D Thermal Protection
Absolute Maximum Ratings:
Supply Voltage (Pin18), V
Voltage at Pin1, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
i
Input Voltage (Pin2), V
Output Peak Current, I
S
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
i
O
Repetitive 1.5A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Non–Repetitive 2A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current (Pin4), I
Power Dissipation (T
Power Dissipation (TA = +70°C), P
Operating Junction Temperature Range, T
Storage Temperature Range, T
Maximum Thermal Resistance, Junction–to–Pins, R
Maximum Thermal Resistance, Junction–to–Ambient (Note 1), R
4
= +90°C), P
pins
stg
tot
tot
J
–40° to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–40° to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
thJPins
80°C/W. . . . . . . . . . . . . . . . . .
thJA
Note 1. Obtained with GND pins soldered to printed circuit with minimized copper area.
28V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±V
S
1V
pp
10mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.0W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page 2
Electrical Characteristics: VS = 24V, S1: ON, ∆f = ± 25kHz, Vi = 1mV, P1 = 12kΩ, fo = 4.5MHz,
fm = 400Hz, TA = +25°C unless otherwise indicated)
Parameter Symbol Test Conditions Min Typ Max Unit
DC Characteristics
Supply Voltage (Pin18) V
Quiescent Output Voltage (Pin18) V
DC Voltage (Pin1) V
DC Voltage (Pin4) V
Quiescent Drain Current (Pin4) I
S
O
1
4
d
P2 = 12kΩ 10.8 – 27 V
11 12 13 V
P2 = 12kΩ, R1 = 270kΩ – 5.3 – V
P2 = 12kΩ – 3.2 – V
– 32 – mA
IF Amplifier & Detector
Input Limiting Voltage @ Pin2 (–3dB) V
Recovered Audio Voltage (Pin9) V
i(threshold)VO
9
Amplitude Modulation Rejection AMR m = 0.3, V1 = 1mV,
Input Resistance (Pin2) R
Input Capacitance (Pin2) C
i
i
= 4V
rms
– 50 100 µV
∆f = ± 7.5kHz, P2 = 12kΩ 140 200 280 mV
– 60 – dB
V
= 4V
O
, Note 2
rms
∆f = 0, P2 = 12kΩ – 30 – kΩ
– 6 – pF
De–Emphasis Resistance R9 C1 = 60 to 888nF 0.75 1.1 1.5 kΩ
DC Volume Control
Volume Attenuation K
(Resistance Control)
V
P2 = 0Ω – 0 – dB
P2 = 4.3kΩ 20 26 32 dB
P2 = 12kΩ – 88 – dB
Control Voltage V
C
K = 0dB – 0 – V
K = 26dB – 1.3 – V
K = 88dB – 2.6 – V
Volume Attenuation Thermal Drift
(Resistance Control)
∆K
∆T
V
pins
T
= +25° to +85°C,
pins
P
= 4.3kΩ
2
DC Tone Control
Tone Cut K
T
S1: OFF, V10 = 200mV,
P
= 12kΩ to 100kΩ,
1
f
= 10kHz
AF
Audio Frequency Amplifier
Output Power (d = 10%) P
O
VS = 24V, RL = 16Ω 3.5 4.1 –
VS = 12V, RL = 8Ω – 1.5 –
Frequency Response of Audio
Amplifier (–3dB)
B PO = 1W, RL = 16Ω,
S1: OFF, V
V
= 4V
O
= 200mV
10
, @ 400Hz
rms
Supply Voltage Rejection SVR P2 = 12kΩ, ∆ f =0,
f
= 120Hz
ripple
Note 2. Test Bandwidth = 20kHz
– –0.05 – dB
°C
– 14 – dB
W
15 50 – kHz
– 26 – dB
Page 3
Electrical Characteristics (Cont’d): VS = 24V, S1: ON, ∆f = ±25kHz, Vi = 1mV, P1 = 12kΩ,
∆
fo = 4.5MHz, fm = 400Hz, TA = +25°C unless otherwise indicated)
Parameter Symbol Test Conditions Min Typ Max Unit
VCR
Total Harmonic Distortion of
Pin9 Output Signal
Supply Voltage Rejection at
Output Pin9
Signal–to–Noise Ratio at
Output Pin9
Input Voltage (Playback) V
Input Resistance (Playback) R
Total Harmonic Distortion for
20dB Overload of V
Overall Circuit
Signal–to–Noise Ratio S + N
Distortion d PO = 50mW,
Muting M VO = 4V
Deviation Sensitivity ∆f P2 = 0 VO = 4V
10
d ∆ f = ±7.5kHz, Vi = 1mV – 0.5 – %
SVR ∆f = 0, f
S + N
N
10
10
d S1: OFF, V10 = 1V
N
∆f = ±25kHz, VI ≥ 1mV – 70 – dB
Vo = 4V
S1: OFF 10 – – kΩ
Vi ≥ 1mV, VO = 4V
f = ±7.5Hz,
Note 2
= 120Hz, P2 = 12kΩ – 66 – dB
ripple
, P2 = 0, S1: OFF 50 70 100 mV
rms
rms,
VS = 24V, RL = 16Ω – 0.5 – %
VS = 12V, RL = 8Ω – 0.5 – %
@ no V1; V1 = 0, Note 2 – 100 – dB
rms
, VO = 4V
rms
∆f = 0, Note 2 – 70 – dB
rms
rms
– 0.5 2.0 %
– 3 6 kHz
Note 2. Test Bandwidth = 20kHz
Turn–Off Muting
Sound IF Input
IF Decoupling
IF Decoupling
Detector (FM)
VCR Input
Pin Connection Diagram
1
2
3
4
5GND
6GND
7Detector (FM)
8
20
AF PA Input
19
AF PA Feedback
V
18
17
AF PA Output
16 GND
15 GND
DV VC Output
14
Volume Control
13
Tone Control9De–Emphasis & VCR Output 12
10 11
Tone Control Capacitor
CC
Page 4
20 11
.280 (7.12) Max
110
.995 (25.3) Max
.280
(7.1)
.100 (2.54) .125 (3.17) Min .385 (9.8)
.300 (7.62)
Loading...