LM1823N National Semiconductor, LM1823N Datasheet - Page 7

• Manufacturer Part Number: LM1823N
• Description: IC VIDEO IF AMP/DETECTOR 28DIP
• Manufacturer: National Semiconductor
• Type: IF Amplifier, PLL Detectorr

Specifications of LM1823N

• Applications: IF
• Mounting Type: Through Hole
• Package / Case: *
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: *LM1823N

Application Notes
work shown in the Typical Application sets up the output at
equal-valued resistors When setting up the AFC detector
the tank should always be tuned so the output is at the
quiescent divider voltage with the desired center frequency
applied
supply it could easily be changed to
(Continued) Refer to Typical Application Circuit
FIGURE 3 Printed Circuit Layout (Component Side)
supply by using
7
Pin 28-Detector Input Pin 28 is internally DC-biased and
requires an AC-coupled input signal The network between
pins 1 and 28 should not allow over 1 Vrms at the input
during signal transients to prevent overloading the detector
When a tank is being used for the IF output load a capaci-
tive divider may be used from pin 1 to pin 28 in which the
series equivalent capacitance resonates with the coil
TL H 5222– 5