AN7213 - FM Front-end Circuit for Radio - Description, Features, Pin, Ratings

Oct 12, 2026

AN7213 is a monolithic integrated circuit intended for the FM front-end of a portable radio. The document details built-in RF amplifier, frequency converter, and local oscillator functions, along with operating voltage and low current consumption figures. It provides pin definitions, a block diagram description, absolute maximum ratings for supply and temperatures, and electrical characteristics such as quiescent current and output/local oscillation voltage under specified test conditions. Additional sections outline application circuit context and coil specifications for tuning.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages4

Reading Time10 min

AccessFree to download

AN7213 FM Front-end Circuit for Radio

Description

Features

Block Diagram

Absolute Maximum Ratings

Electrical Characteristics

Application Circuit

Coil Specifications

Printed Circuit Board Layout

AN7213 # FM Front-end Circuit for Radio ## ■ Description The AN7213 is a monolithic integrated circuit designed forFM front-end of the portable radio. ## ■ Features ● Built-in RF amplifier,frequency converter,localoscillator ● Wide operating voltage range:2V~7V ● Low current consumption:2mA(Vcc=4V) ### ■ Pin | Pin No. | Pin Name | | --- | --- | | 1 | RFInput | | 2 | Vcc | | 3 | RF Output | | 4 | GND | | 5 | Mixer Output | | 6 | Oscillator Collector | | 7 | Oscillator Emitter | ## ■ Block Diagram GND Vcc Unit:mm7-Lead SILPlastic Package(7-SIP) ## ■ Absolute Maximum Ratings(Ta=25℃) | Item | Symbol | Rating | Unit | | --- | --- | --- | --- | | Supply Voltage | Vcc | 7 | V | | Terminal Voltage | V3-4 | 14 | V | | | V⁵-4 | 14 | V | | | V6-4 | 14 | V | | Power Dissipation | PD | 30 | mW | | Operating Ambient Temperature | Topr | -20~+75 | ℃ | | Storage Temperature | Tstg | -55~+125 | ℃ | Operating Supply Voltage Range:Vcc=2.0V~7.0V ## ■ Electrical Characteristics(Ta=25℃) | Item | Symbol | Test Circuit | Condition | min. | typ. | max. | Unit | | --- | --- | --- | --- | --- | --- | --- | --- | | Quiescent Current | Ico | 1 | Vcc=4V,without signal | 1.4 | | 2.55 | mA | | Output Voltage | Vo | 2 | Vcc=4V,Vin=70dBμ,106MHz* | 30.5 | | 68.5 | mV | | Local Oscillation Voltage | Vosc | 2 | Vcc=2V | 130 | | | mV | *Max.output voltage value is obtained by changing input signal frequency ±△f at 106MHz Test Circuit 1(Itot) Test Circuit 2(Vo,Vosc) ZLX20T ## ■ Application Circuit ■ Characteristics Curve S-f(U.S.Band)S-f(Japanese Band)Vo-foFrequency f(MHz)Frequency f(MHz)Output Frequency fo(MHz) Output Voltage Vo(mV) Sensitivity S)dB) Sensitivity S(dB) Output Voltage Vo(mV) Ambient Temperature Ta(℃) Ambient Temperature Ta(℃) ## ■ Coil Specifications | Symbol | Use,Freq. | Type No. | Maker | Connection
Diagram | Number
of Turns | Tuning Cap. | Unloaded Q | | --- | --- | --- | --- | --- | --- | --- | --- | | T₁ | FM Quad
Coil
10.7MHz | EIF-7S752A | Matsushita | | …②
①·
8T
5T
②
③
2T
⑥
④ | 100pF | 90 | | LI | RFCoil
76～108MHz | ELQ-5N53 | Matsushita | | ⑤·
⑤
2.5T | 0.0986μH | 110
(at 25.2MHz) | | L₂ | OSC Coil | ELQ-5N111 | Matsushita | ⑤ | ⑤…⑤1.75T | 0.0495μH | 150
(at 25.2MHz) | ■Printed Circuit Board Layout (Scale:1:1)

FAQs

What is the AN7213 used for in a portable radio?

The AN7213 is designed for the FM front-end of a portable radio.

What key functions are integrated in the AN7213?

It includes a built-in RF amplifier, frequency converter, and local oscillator.

What operating voltage and current consumption ranges are provided?

The operating voltage range is Vcc = 2V to 7V, and low current consumption is listed as 2mA at Vcc = 4V.

Oct 12, 2026

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