PDF《NTE705A Integrated Circuit》

NTE705A Integrated Circuit Chroma Demodulator Description: The NTE705A is a monolithic chroma demodulator constructed using the planar epitaxial process.

This device demodulates the chroma subcarrier information contained in a color television video sig- nal and provides color?difference signals at the outputs. The low voltage drift of the DC output insures excellent performance in direct?coupled chrominance output circuitry. Features: D Low Output Voltage Drift with Temperature D Doubly Balanced Demodulation D Internal Color?Difference Matrix for NTSC Color TV D 10V Peak?to?Peak EB?EY Output Absolute Maximum Ratings: Supply Voltage, 28V Minimum Load Resistance 3k? Peak?to?Peak Reference Input Voltage 5V Peak?to?Peak Chroma Input Voltage 5V Internal Power Dissipation 500mW Operating Temperature Range, Topr 0° to +70°C Storage Temperature Range, Tstg ?65° to +150°C Lead Temperature (Soldering,

60 seconds) 300°C Electrical Characteristics: (TA = +25°C, V+ = 24V, unless otherwise specifid) Parameter Test Conditions Min Typ Max Unit Supply Current eC = 0, RL = 1M? 5.5 9.0 12.5 mA eC = 0, RL = 1M?, TA = +70°C ? 9.0 13.0 mA eC =

0 16.5

22 25.5 mA eC = 0, TA = +70°C ?

22 ? mA Internal Power Dissipation eC =

0 ?

340 430 mW eC = 0, TA = +70°C ?

340 445 mW DC Voltage at any Output Terminal eC =

0 13.2 14.5 15.8 V eC = 0, TA = +70°C 13.0 14.5 16.0 V Temp. Coefficient of DC Voltage at any Output Terminal eC =

0 ?5.0 ?0.3 +5.0 mV/°C Absolute Value of DC Difference Voltage between any Two Outputs eC =

0 ? 0.15 0.6 V DC Voltage at either Reference Terminal eA = eB = eC =

0 ? 5.8 ? V Electrical Characteristics (Cont'd): (TA = +25°C, V+ = 24V, unless otherwise specifid) Parameter Test Conditions Min Typ Max Unit DC Voltage at either Chroma Terminal eC =

0 ? 3.2 ? V Reference Input Resistance eC =

0 ? 1.7 ? k? Reference Input Capacitance eC =

0 ? 6.0 ? pF Chroma Input Resistance ? 0.8 ? k? Chroma Input Capacitance ? 5.0 ? pF Peak?to?Peak Chroma Input Voltage EB ? EY = 5Vp?p ? 0.4 0.7 V Peak?to?Peak ER?EY Output Voltage EB ? EY = 5Vp?p 3.5 3.8 4.2 V Peak?to?Peak EG?EY Output Voltage EB ? EY = 5Vp?p 0.75 1.0 1.25 V Max. Peak?to?Peak EB?EY Output Voltage eC = 1.5Vp?p 8.0

10 ? V EB?EY Demodulation Angle EB?EY = 5Vp?p ?

3 ? Degrees ER?EY Demodulation Angle EB?EY = 5Vp?p ?

109 ? Degrees EG?EY Demodulation Angle EB?EY = 5Vp?p ?

259 ? Degrees ER?EY Demodulation Angle relative to EB?EY Demodulation Angle EB?EY = 5Vp?p

101 106

111 Degrees EB?EY Demodulation Angle relative to EG?EY Demodulation Angle EB?EY = 5Vp?p

96 104

112 Degrees Highest AC Unbalance Voltage at any Ouput Terminal eC =

0 ? 0.3 0.8 Vp?p Pin Connection Diagram (Top View)

9 8

5 3

2 7

6 1 EB ? EY (+) Chroma (?) Chroma EG ? EY V (+) Ref "A" Ref "B" ER ? EY GND

4 1.000 (25.4) 1.000 (25.4) Max .250 (6.35)

1 7

2 6

3 5

8 4 9