NTE1785 Datasheet | NTE Electronics

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 plete 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 - - - - - - - - - - . . . 900m W 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 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 Bandwidth of Video Amplifier Symbol V11- 13 V1- 16(rms) |Z1- 16| V12- 13 V12- 13 GV B 3d B In parallel with 2p F Note 1 Test Conditions Min 10.2 - - - 2.9 - - Typ 12.0 100 2 6 ±0.3 3.07 64 6 Max 13.2 150 - - 3.2 - - Unit V µV kΩ V V d B MHz Note 1. So- called “Projected Zero Point”, e.g. with switched demodulator. Electrical Characteristics (Cont’d): (TA = +25°C, V11- 13 = 12V, f = 38.9MHz unless otherwise specified) Paramet...