tda7421n STMicroelectronics, tda7421n Datasheet - Page 5

• Manufacturer Part Number: tda7421n
• Description: Am/fm Tuner For Car Radio And Hi-fi Applications
• Manufacturer: STMicroelectronics

PIN DESCRIPTION (Continued)
(*) Pin function is user defined by software.
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62
63
64
N.
AM AGC1 RF AMP
FM IF AMP1 OUT
AM S-METER TC
FM IF AMP2 IN +
FM IF AMP2 IN -
FM IF AMP IN +
FM IF AMP IN -
AM MIX2 OUT
AM AGC1 PIN
AM MIX2 IN +
FM IF AGC IN
AM AGC1 TC
AM MIX2 IN -
MIX OUT +
MIX OUT -
RF VCC
Name
FM 2
FM 2
FM 1
FM 1
FM 1
AM S-meter time constant
AM 2
RF positive supply
AM 2nd mixer negative input (differential -)
AM 2nd mixer positive input (differential +)
FM IF AGC input
FM/AM 1
FM/AM 1
AM 1
AM 1
AM 1
nd
nd
st
st
st
nd
st
st
st
IF amplifier output
IF amplifier negative input (differential -)
IF amplifier positive input (differential +)
AGC time constant
AGC voltage output (to RF amplifier)
AGC current output (to antenna attenuation diodes)
IF amplifier negative input (differential -)
IF amplifier positive input (differential +)
mixer output
st
st
mixer negative output (differential -)
mixer positive output (differential +)
Function
TDA7421N
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