NTE875
Integrated Circuit
Video IF Amplifier/PLL Detector System
Description:
The NTE875 is a complete video IF signal processing system on a single 28鈥揕ead DIP type package.
This device contains a 5鈥搒tage gain鈥揷ontrolled IF amplifier, a PLL synchronous amplitude detector,
self鈥揷ontained gated AGC, and a switchable AFC detector. The increased flexibility of the NTE875
makes it suitable for a wide variety of television applications where high quality video or sound carier
recovery is required. These include home receiver video IFs, cable and subscription TV decoders,
and parallel sound IF/intercarrier detector systems. Typical operating frequencies are 38.9MHz,
45.75MHz, 58.75MHz, and 61.25MHz.
Features:
D
Low Differential Gain and Phase
D
IF and Detector pin Compatible with NTE878 (Discontinued)
D
Common鈥揃ase IF Inputs for SAW Filters
D
True Synchronous Video Detector using PLL (Phase Lock Loop)
D
Excellent Stability at High System Gains
D
Noise鈥揂verage Gated AGC System
D
Uncommitted AGC Comparator Input
D
Internal AGC Gate Generator
D
Superior Small鈥揝ignal Detector Linearity
D
AFC Detector with Adjustable Output Bias
D
9MHz Video Bandwidth
D
Reverse Tuner AGC Output
Absolute Maximum Ratings:
Power Supply Voltage, V
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V
IF Supply Current, I
5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60mA
AGC Gate Voltage, V
14
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
鹵5V
Video Output Current, I
16
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10mA
Phase Lock Loop (PLL) Filter Current, I
18
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5mA
Detector Input Signal,
錕?frac12;
DET
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1V
rms
Power Dissipation, P
D
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2W
Thermal Resistance, Junction鈥搕o鈥揂mbient, R
thJA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50擄C/W
Junction Temperature, T
J
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +125擄C
Operating Temperature Range, T
opr
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0擄C to +70擄C
Storage Temperature Range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?5擄C to +150擄C
Lead Temperature (During Soldering, 10sec), T
L
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +260擄C
1
2
3
4
