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PDF NTE1785 Data sheet ( Hoja de datos )
| Número de pieza | NTE1785 | |
| Descripción | Integrated Circuit TV IF Amp w/Demod and AFC (For PNP Tuners) | |
| Fabricantes | NTE | |
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NTE1785
Integrated Circuit
TV IF Amp w/Demod and AFC
(For PNP Tuners)
Description:
The NTE1785 is an IF amplifier and demodulator circuit in a 16–Lead DIP type package designed for
use in color and black and white television receivers using PNP tuners.
Features:
D Gain–Controlled Wide–Band Amplifier Providing Complete IF Gain
D Synchronous Demodulator
D White Spot Inverter
D Video Preamplifier with Noise Protection
D AFC Circuit which can be Switched ON/OFF by a DC Level (e.g. During Tuning)
D AGC Circuit with Noise Gating
D Tuner AGC Output (PNP Tuners)
D VCR Switch which Switches Off the Video Output (e.g. For Insertion of a VCR Playback Signal)
Absolute Maximum Ratings:
Supply Voltage, V11–13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.2V
Tuner AGC Voltage, V4–13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12V
Total Power Dissipation, Ptot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 900mW
Operating Ambient Temperature Range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –25° to +60°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +125°C
Electrical Characteristics: (TA = +25°C, V11–13 = 12V, f = 38.9MHz unless otherwise specified)
Parameter
Symbol Test Conditions Min Typ Max Unit
Supply Voltage Range
IF Input Voltage for Onset of AGC (RMS Value)
Differential Input Impedance
Zero–Signal Output Level
Top Sync Output Level
IF Voltage Gain Control Range
V11–13
V1–16(rms)
|Z1–16|
V12–13
V12–13
GV
In parallel with 2pF
Note 1
10.2 12.0 13.2
– 100 150
–2–
– 6 ±0.3 –
2.9 3.07 3.2
– 64 –
V
µV
kΩ
V
V
dB
Bandwidth of Video Amplifier
B 3dB
– 6 – MHz
Note 1. So–called “Projected Zero Point”, e.g. with switched demodulator.
1 page | ||
| Páginas | Total 3 Páginas | |
| PDF Descargar | [ Datasheet NTE1785.PDF ] | |
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