NTE821
Integrated Circuit
TV Chroma Demodulator
Description:
Specifically designed to match advances in color picture tube phosphors, the NTE821 is a monolithic
silicon integrated circuit in a 14鈥揕ead DIP type package and consists of three output amplifiers, a
new resistor matrix, two double鈥揵alanced chroma demodulators, and a very stable bias circuit. When
used with the NTE714 subcarrier regeneration system and the NTE715 chroma amplifier, this device
completes the typical three鈥揵lock chroma system. Alternatively, the NTE821 chroma demodulator
can be used with the NTE738 chroma processor to form a complete two鈥揵lock chroma system.
The output amplifiers are specifically designed to meet the low impedance, short鈥揷ircuit protected
driving requirements of high鈥搇evel color output amplifiers. Internal ripple filter capacitors greatly re-
duce the high鈥揻requency components of demodulation and thereby extend the output voltage swing
capability of the output stages and at the same time eliminates the need for external output filtering
components.
Features:
D
Output Short鈥揅ircuit Protection
D
Excellent Subcarrier Rejection
D
600mV Maximum Offset Voltage
D
2mV/擄C Typical Temperature Stability
D
Good Chroma Sensitivity
Absolute Maximum Ratings:
(T
A
= +25擄C unless otherwise specified)
Operating Ambient Temperature Range, T
opr
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?0擄 to +85擄C
Storage Temperature Range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?5擄 to +150擄C
Maximum Voltage and Current Ratings (T
A
= +25擄C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Table
Current in mA
Pin #
1
2
3
4
5
6
7
Voltage Range in Volts
No Connection
No Connection
0 to +5.0
0 to +5.0
No Connection
0 to +12
0 to +12
Input
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Output
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Pin #
8
9
10
11
12
13
14
Voltage Range in Volts
0 to +27
0 to +20
No Connection
0 to +20
No Connection
0 to +20
Reference
Current in mA
Input
Note 2
1.0
鈥?/div>
1.0
鈥?/div>
1.0
1.0
Output
1.0
Note 1
鈥?/div>
Note 1
鈥?/div>
Note 1
Note 2
Note 1. Maximum continuous current output is 20mA and is limited by package power dissipation.
Short circuit current is typically 50mA.
Note 2. Limited by package power dissipation.
NTE821 產(chǎn)品屬性
NTE
置換半導(dǎo)體
否
1
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