TDA7427D datasheet(7/21 Pages) STMICROELECTRONICS

tên linh kiện	TDA7427D

Giải thích chi tiết về linh kiện	AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER

PDF	21 Pages

Scroll/Zoom	100%

nhà sản xuất	STMICROELECTRONICS [STMicroelectronics]

Trang chủ	http://www.st.com

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FUNCTION

Programmable counter for VCO frequency

Reference counter PLL

IRC

Reference counter IF

IFCM

IF counter mode selector

Frequency error window IF counter

IFENA

Enable IFRC

Center frequency IF counter

IFS

Sampling time IF counter

Stby, FM, AM, AM swallow mode selector

Programmable delay and phase error for lock detector

LPIN1/2

Loop filter input select

PLLSTOP

PLL stop

Charge pump high current

Charge pump low current

LDENA

Lock detector enable

CURRH

Set current high

OSC

Oscillator adjust

DOUT1

Push pull output 5V

DOUT3

Open collector output

INLOCK

Lock detector output

Table 2. Control Register Functions.

OSC IN

R0 ...R15

PREDIVIDER

AM IN

FM IN

PC0 ...PC4

COUNTER

PRESCALER

M/M+1

PC5 ... P15

COUNTER

fref

fsyn

D95AU375A

∆ϕ

TO CHARGE

PUMP

Figure 1. FM and AM (SW) operation (swallow mode)

TDA7427

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