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TDA9845 Datasheet(PDF) 2 Page - NXP Semiconductors |
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TDA9845 Datasheet(HTML) 2 Page - NXP Semiconductors |
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2 / 20 page  1995 Mar 20 2 Philips Semiconductors Preliminary specification TV and VTR stereo/dual sound processor with digital identification TDA9845 FEATURES • Supply voltage 5 to 8 V • Source selector • Stereo matrix • AF input for mono source • AF outputs for Main • LED operation mode indication (stereo and dual) • High identification reliability. GENERAL DESCRIPTION The TDA9845 is a stereo/dual sound processor for TV and VTR sets. Its identification ensures safe operation by using internal digital PLL technique with extremely small bandwidth, synchronous detection and digital integration (switching time maximum 2.1 s; identification concerning the main functions). QUICK REFERENCE DATA ORDERING INFORMATION SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT VP supply voltage (pin 18) 4.5 5 8.8 V IP supply current (pin 18) without LED current 12 13 16.5 mA Vi(rms) nominal input signal voltage (Vi1, Vi2, Vi3) (RMS value) 54% modulation B/G − 250 − mV L (only for Vi1) − 500 − mV Vo(rms) nominal output signal voltage (RMS value) 54% modulation − 500 − mV Vo(rms) clipping level of the output signal voltages (RMS value) THD ≤1.5% VP = 5 V 1.4 1.6 − V VP = 8 V 2.4 2.65 − V ILON input current LED ON −− 12 mA Vi pil input voltage sensitivity of pilot frequency unmodulated 5 − 100 mV S/N(W) weighted signal-to-noise ratio “CCIR468-3”66 75 − dB THD total harmonic distortion − 0.2 0.3 % Tamb operating ambient temperature range 0 − +70 °C fident identification window width STEREO 2.2 − 2.2 Hz DUAL 2.3 − 2.3 Hz tident ON total identification time ON 0.35 − 2.1 s Vi tuner identification voltage sensitivity − 28 − dB µV ∆fpil pull-in frequency range of pilot PLL fω = 10.008 MHz lower side −296 −−296 Hz upper side 302 − 302 Hz TYPE NUMBER PACKAGE NAME DESCRIPTION VERSION TDA9845 DIP20 plastic dual in-line package; 20 leads (300 mil) SOT146-1 TDA9845T SO20 plastic small outline package; 20 leads; body width 7.5 mm SOT163-1 |
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