T4260-ILSH

T4260-ILSH Datasheet


The T4260 is an advanced AM/FM receiver with integrated fast PLL as a single-chip solution based on Atmel’s high-performance BICMOS II technology. The low-impedance driver at the IF output is designed for the A/D of a digital IF. The fast tuning concept realized in this part is based on patents held by Atmel and allows lock times less than 1 ms for a jump over the FM band with a step width of kHz. The AM up-conversion and the FM down-conversion allows an economic filter concept. An automatic tuner alignment is provided by built-in DACs for gain and offset compensation. The frequency range of the IC covers the FM broadcasting band as well as the AM band. The low current consumption helps the designers to achieve economic power consumption concepts and helps to keep the power dissipation in the tuner low.

Part Datasheet
T4260-ILSH T4260-ILSH T4260-ILSH (pdf)
Related Parts Information
T4260-ILQH T4260-ILQH T4260-ILQH
T4260-ILQ T4260-ILQ T4260-ILQ
T4260-IL T4260-IL T4260-IL
PDF Datasheet Preview
• AM/FM Tuner Front End with Integrated PLL
• AM Up-conversion System AM-IF MHz
• FM Down-conversion System FM-IF MHz
• IF Frequencies up to 25 MHz
• Fine-tuning Steps AM = 1 kHz and FM = 50 kHz/25 kHz/12.5 kHz
• Fast Fractional PLL Lock Time < 1 ms Inclusive Spurious Compensation
• Fast RF-AGC, Programmable in 1-dB Steps
• Fast IF-AGC, Programmable in 2-dB Steps
• Fast Frequency Change by 2 Programmable N-divider
• Two DACs for Automatic Tuner Alignment
• High S/N Ratio
• 3-wire Bus Enable, Clock and Data 3 V and 5 V Microcontrollers-
compatible

AM/FM Front End IC

The T4260 is an advanced AM/FM receiver with integrated fast PLL as a single-chip solution based on Atmel’s high-performance BICMOS II technology. The low-impedance driver at the IF output is designed for the A/D of a digital IF. The fast tuning concept realized in this part is based on patents held by Atmel and allows lock times less than 1 ms for a jump over the FM band with a step width of kHz. The AM up-conversion and the FM down-conversion allows an economic filter concept. An automatic tuner alignment is provided by built-in DACs for gain and offset compensation. The frequency range of the IC covers the FM broadcasting band as well as the AM band. The low current consumption helps the designers to achieve economic power consumption concepts and helps to keep the power dissipation in the tuner low.

T4260

Pin Description

Figure Pinning SSO44
44 MXFMOB 43 MXFMOA 42 RFAGCA1 41 VST 40 MXAMOA 39 MXAMOB 38 GNDT 37 VRT 36 IFINFM 35 IFINAM 34 IFREF 33 RFAGCFM 32 IFAGCA1 31 IFAGCFM 30 IFOUTA 29 IFOUTB 28 GNDPLL 27 REFFREQ 26 VRPLL 25 DATA 24 CLK 23 EN

DAC1 1 DAC2 2 FMAGCO 3 MXFMIA 4 MXFMIB 5 GNDRF 6 MXAMIB 7 MXAMIA 8 AMAGCO 9 IFAGCA2 10 SW2/AGC 11 RFAGCA2 12 SW1 13 VRVCO 14 VSPLL 15 FMLF 16 AMLF 17 VTUNE 18 OSCGND 19 OSCE 20 OSCB 21 OSCBUF 22

Pin Description

Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44

Symbol DAC1 DAC2

FMAGCO MXFMIA MXFMIB GNDRF MXAMIB MXAMIA AMAGCO IFAGCA2 SW2/AGC RFAGCA2

SW1 VRVCO VSPLL FMLF AMLF VTUNE OSCGND OSCE OSCB OSCBUF

EN CLK DATA VRPLL REFFREQ GNDPLL IFOUTB IFOUTA IFAGCFM IFAGCA1 RFAGCFM IFREF IFINAM IFINFM VRT GNDT MXAMOB MXAMOA VST RFAGCA1 MXFMOA MXFMOB

Function DAC1 output DAC2 output FM AGC current FM mixer input A FM mixer input B RF ground AM mixer input B AM mixer input A AM AGC current AM IF-AGC filter 2 Switch 2/AM AGC voltage RF AM-AGC filter 2 Switching output 1 VCO reference voltage PLL supply voltage FM loop filter AM loop filter Tuning voltage Oscillator ground Oscillator emitter Oscillator base Oscillator buffer output/input 3-wire bus Enable 3-wire bus Clock 3-wire bus Data PLL reference voltage PLL reference frequency PLL ground IF output B IF output A FM IF-AGC filter AM IF-AGC filter 1 RF FM-AGC filter IF amplifier reference input IF amplifier AM input IF amplifier FM input Tuner reference voltage Tuner ground AM mixer output B AM mixer output A Tuner supply voltage RF AM-AGC filter 1 FM mixer output A FM mixer output B
2 T4260

T4260

Figure Block Diagram

MXFMOB

MXAMOA

MXFMOA MXAMOB
43 44 39

IFINAM IFREF ININFM
34 35

MXFMIA 4 MXFMIB 5

GNDRF 6 MXAMIB 7 MXAMIA 8

RFAGCA1 42

RFAGCFM 33

RFAGCA2 12

AMAGCO 9

FMAGCO 3

N DIV PD

R DIV
22 OSCBUF
21 20 19

OSCE

REFFREQ

OSCB OSCGND

IFAGCFM

IFOUTA IFAGCA2
Ordering Information

Extended Type Number T4260-ILSH T4260-ILQH

Package Information

Package Pb-free SSO44 Pb-free SSO44

Remarks Tube Taped and reeled

Package SSO44

Dimensions in mm
technical drawings according to DIN specifications

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More datasheets: DM74ALS175SJX | DM74ALS174SJ | DM74ALS174M | DM74ALS174SJX | DM74ALS175N | DM74ALS174N | 5219628F | T4260-ILQH | T4260-ILQ | T4260-IL


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Datasheet ID: T4260-ILSH 519399