CX74036 데이터 시트보기 (PDF) - Conexant Systems

부품명

상세내역

제조사

CX74036

IS-136 Receive RF IC for TDMA and AMPS Applications

Conexant Systems 

CX74036

Receive RF IC

MSB

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

SPD A2B1 A2B0 M2B7 M2B6 M2B5 M2B4 M2B3 M2B2 M2B1 M2B0 CPP RB10 RB9 RB8 RB7 RB6 RB5

LSB

17

16

15

14

13

12

11

10

09

08

07

06

05

04

03

02

01

00

RB4 RB3 RB2 RB1 RB0 AB3 AB2 AB1 AB0 MB7 MB6 MB5 MB4 MB3 MB2 MB1 MB0 VRS

00 = First bit shifted in (LSB)

35 = Last bit shifted in (MSB)

VRS = Select VCO or Reference Input to Programmable Counter

"0" = Reference Input

"1" = VCO Input

MB0 - MB7: Programming for Synthesizer M Counter: MB0 (LSB), MB7 = (MSB)

AB0 - AB3: Programming for Synthesizer A Counter: AB0 (LSB), AB7 = (MSB)

RB0 - RB10: Programming for Synthesizer R Counter: RB0 (LSB), RB10 = (MSB). CPP = Change Pump Polarity,

"0" = Ground Reference

M2B0 - M2B7: Programming for LO Divider M Counter: M2B0 (LSB), M2B7 = (MSB)

A2B0 - A2B7: Programming for LO Divider A Counter: A2B0 (LSB), A2B1 = (MSB)

SPD = Synthesizer Power Down (for External Synthesizer Mode)

"1" = Internal Synthesizer,

"0"= External Synthesizer

101105A-4_101200

Figure 4. 3-Wire Programming Data Pattern

Table 3. Signal Pin Names and Definitions (1 of 2)

Pin No.

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

Signal Name

LNA_G

MXIH

MIXIL

BAND

CHIP_EN

LOIH

LOIL

VCC_MX

STANDBY

IQ/IF

MXOUT+

MXOUT-

MX2I+

MX2I-

VCC_IF

IFBYPASS

MX2OUT

Vvga

VCC_VGA

VGAI-

VGAI+

FB_CAP

LATCH_EN

CLK

DATA

REFIN

Description

LNAs gain control command

1900 MHz band mixer Input

800 MHz band mixer Input

800 MHz/1900 MHz band select command

Chip power down select command

1900 MHz RF mixer LO input

800 MHz RF mixer LO input

RF mixer VCC

Control signal to enable RF LO buffers and VHF synthesizer

I/Q or IF output select command

RF mixer output. Open Collector.

RF mixer output. Open Collector.

IF mixer input

IF mixer input

IF section VCC

IF mixer bias decoupling

IF mixer output

Analog voltage input for VGA gain control

VGA section VCC

VGA input

VGA input

VGA DC feedback filter capacitor connection

Enable input line for internal synthesizer programming

Serial clock input line for internal synthesizer programming

Serial data input line for internal synthesizer programming

19.44 MHz reference oscillator input. Requires VCC/2 DC bias.

4

Conexant – Proprietary

101105A

Data Subject to Change

October 17, 2000

Share Link: