NTE738 Integrated Circuit Color TV Processing Circuit Description: The NTE738 is a chroma IF amplifier with automatic chroma control, color killer, dc chroma control, and injection lock reference system followed by dc hue control. Features: D Minimum Number of External Components required D DC Control of both Chroma Amplitude and Hue Shift D Crystal–Controlled Internal Feedback Oscillator D Built–in Noise Immunity D Schmitt Trigger Color Killer D Automatic Chroma Control D Internal Burst Gate and Gate Pulse Shaping Circuit D High Oscillator Lock–in Sensitivity D Built–in Supply Regulation Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Power Supply Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35mA Horizontal Pulse Input Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250µA Peak Power Dissipation (Package Limitation), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 625mW Derate above TA = +25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.0mW/°C Operating Temperature Range (Ambient), Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +75°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C Electrical Characteristics: (VCC = +20V, RS = 390Ω, TA = +25°C unless otherwise specified) Parameter Min Typ Max Unit IS = 35mA 9.0 9.6 11.5 V IS = 27mA – 9.2 – V Maximum Undistorted Chroma Output E(Pin3) = E(Pin14), Note 1 34 40 – dB Maximum Chroma Gain E(Pin3) = E(Pin14), Note 1 34 40 – dB Automatic Chroma Control Range (ACC) –3dB Down from Maximum Undistorted Output, Note 1 – 19 – dB Chroma Burst Level to Kill Note 1 – 1.4 – mVP–P Manual Chroma Gain Control Range ∆V(Pin3) V(Pin14) to 0V 50 60 – dB Regulated Voltage Test Conditions Note 1. With 5.0mV(p–p) burst input at pin 5 set E(pin 10) to just “unkill”. Electrical Characteristics (Cont’d): (VCC = +20V, RS = 390Ω, TA = +25°C unless otherwise specified) Parameter Test Conditions Min Typ Max Unit Chroma Input Resistance – 2.3 – kΩ Chroma Input Capacitance – 13 – pF Chroma Output Impedance – 15 – Ω Horizontal Input Pulse 2.2 3.0 4.0 VP Oscillator Output 100 – – mV(RMS) – 15 – Ω 100 126 – degrees 1200 – – Hz – 900 – Hz 25mVP–P Burst Amplitude – 0.20 – deg/Hz 2.0mVP–P Burst Amplitude – 0.25 – deg/Hz Oscillator Output Impedance ∆V(Pin12) V(Pin14) to 4.3V Hue Control Range Oscillator Pull–In Range Oscillator Noise Bandwidth (fN) Static Phase Error with Oscillator Detuning Pin Connection Diagram OSC Peak 1 14 Voltage Regulator Chroma Output 2 13 OSC Output Chroma Control 3 12 Hue Control Burst Gate 4 11 Phase Shift Chroma Input 5 Chroma Bypass 6 GND 7 st 10 1 ACC Filter/ Killer Control 9 2nd ACC Filter 8 14 8 1 7 Crystal .785 (19.95) Max .300 (7.62) .200 (5.08) Max .100 (2.45) .600 (15.24) .099 (2.5) Min