TDA6405ATS datasheet(4/32 Pages) PHILIPS

4 / 32 page

1999 Jan 13

Philips Semiconductors

Product speciﬁcation

5 V mixer/oscillator-PLL synthesizers for

hyperband tuners

TDA6404; TDA6405;

TDA6405A

BLOCK DIAGRAM

Fig.1 Block diagram.

The pin numbers in parenthesis represent the TDA6405 and TDA6405A.

handbook, full pagewidth

MGK813

XTAL

OSCILLATOR

4 MHz

REFERENCE

DIVIDER

512, 640, 1024

PRESCALER

DIVIDE BY 8

15-BIT

PROGRAMMABLE

DIVIDER

POWER-ON

RESET

DIGITAL

PHASE

COMPARATOR

CHARGE

PUMP

TUNING

AMPLIFIER

UHF

OSCILLATOR

AMPLIFIER

VHF

OSCILLATOR

RF INPUT

UHF

ELECTRONIC

BAND SWITCH

RF INPUT

VHF

UHF

MIXER

VHF

MIXER

IN-LOCK

DETECTOR

15-BIT

FREQUENCY

5-LEVEL A/D

CONVERTER

GATE

7-BIT CONTROL

LOGIC

T2, T1, T0

CHP

T0 RSA RSB OS

CHP

3-BIT BAND SWITCH

VHFL

VHFH

UHF

I2C-BUS

TRANSCEIVER

fREF 1/2fDIV

TDA6404

TDA6405

TDA6405A

fREF

fDIV

1/2fDIV

RSA

RSB

SDA

SCL

SDA

SCL

(3) 26

(2) 27

(1) 28

(4) 25

(11) 18

(10) 19

(5) 24

(6) 23

(7) 22

(15) 14

(14) 15

(8) 21

16 (13)

2 (27)

1 (28)

4 (25)

3 (26)

12 (17)

11 (18)

10 (19)

BSVHF

BSUHF

5 (24)

17 (12)

IFFIL1

VCC

6 (23)

IFFIL2

13 (16)

7 (22)

8 (21)

9 (20)

(9) 20

UHFOSCIB1

UHFOSCOC1

GND

UHFOSCOC2

UHFOSCIB2

VHFOSCIB2

IFOUT1

IFOUT2

VHFOSCOC1

VHFOSCOC2

VHFOSCIB1

PVHFL

ADC

PVHFH

PUHF

UHFIN1

UHFIN2

VHFIN

RFGND

XTAL

BSVHF

BSUHF

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