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SC9257

Features: * Optimal for configuring digital tuning systems in high-fi tuners and car stereos.* built-in prescalers. Operate at input frequency ranging from 30~150 MHz during FMIN input (with 2 modulus prescaler) and at 0.5~40MHz during AMIN input (with 2 modulus prescaler or direct dividing).* 16 ...

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SC9257: Features: * Optimal for configuring digital tuning systems in high-fi tuners and car stereos.* built-in prescalers. Operate at input frequency ranging from 30~150 MHz during FMIN input (with 2 modul...

SC9257 Data Sheet

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Part Number:
SC9257
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2025/12/26

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Product Details

Description



Features:

* Optimal for configuring digital tuning systems in high-fi tuners and car stereos.
* built-in prescalers. Operate at input frequency ranging from 30~150 MHz during FMIN input (with 2 modulus prescaler) and at 0.5~40MHz during AMIN    input (with 2 modulus prescaler or direct dividing).
* 16 bit programmable counter, dual parallel output phase comparator, crystal oscillator and reference counter.
* 3.6MHz, 4.5MHz, 7.2MHz or 10.8MHz crystal oscillators can be used.
* 15 possible reference frequencies. ( When using 4.5MHz crystal)
* Built-in 20 bit general-purpose counter for such uses as measuring intermediate frequencies (IFIN1 and IFIN2) and lowfrequency pilot signal cycles (SCIN).
* High-precision (±0.55~±7.15s) PLL phase error detection.
* Numerous general-purpose I/O pins for such uses as peripheral circuit control.
* 4 N-channel open-drain output ports (OFF withstanding voltage:12V) for such uses as control signal output.
* Standby mode function (turns off FM, AM and IF amps) to save current consumption.
* All functions controlled through 3 serial bus lines.
* CMOS structure with operating power supply range of VDD=5.0±0.5V.


Pinout

Connection Diagram


Specifications

         Characteristic

Symbol

Value

Unit

Supply Voltage

VCC

-0.36.0

V

Input Voltage

VIN

-0.3 ~ VDD+0.3

V

N-ch Open-Drain Off withstanding Voltage
VOFF
13
V

Power Dissipation

PD

300(200)

mW

Operating Temperature

TOPR

-40 ~ 85

Storage Temperature

TSTG

-65 ~ 150

 




Description

The SC9257 is phase-locked loop (PLL) LSIs for digital tuning systems (DTS) with built in 2 modulus prescalers. All functions ate controlled through 3 serial bus lines. These LSIs are used to configure high-performance digital tuning system.




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