STW82103B datasheet(9/67 Pages) STMICROELECTRONICS

9 / 67 page

STW82103B

Pin description

Doc ID 018517 Rev 2

9/67

Table 2.

Pin list

Pin No

Name

Description

Observation

VDD_DAC

DAC power supply

Vsupply analog1= 3.3 V

REXT_DAC

External resistance connection for DAC

VDD_DIV

Divider by 2 power supply

Vsupply analog1= 3.3 V

VDD_VCO

VCOs and External VCO Buffer power supply

Vsupply analog1= 3.3 V

EXTVCO_INN

External VCO (LO) negative input

Diversity Slave Mode and External

VCO Modes; otherwise it must be

connected to GND

EXTVCO_INP

External VCO (LO) positive input

Diversity Slave Mode and External

VCO Modes; otherwise it must be

connected to GND

EXT_PD

Hardware power down:

‘0’ device ON; ‘1’ device OFF

CMOS Input

ADD2

I2CBUS address select pin

CMOS Input

ADD1

I2CBUS address select pin

CMOS Input

ADD0

I2CBUS address select pin

CMOS Input

VDD_IO

Digital IO power supply

Vsupply digital = 3.3 V

VDD_PSCBUF

Prescaler input buffer power supply

Vsupply analog1= 3.3 V

Not connected

VDD_OUTBUF

Power supply for LO buffer

Vsupply analog1= 3.3 V

OUTBUFN

LO Output buffer negative output

Open collector @ 3.3 V

OUTBUFP

LO Output buffer positive output

Open collector @ 3.3 V

VCTRL

Control voltage for VCOs

ICP

PLL charge pump output

REXT_CP

External resistance connection for PLL charge

pump current

VDD_CP

Power supply for charge pump

Vsupply analog1= 3.3 V

LOCK_DET

Lock detector

CMOS Output

REF_CLK

Reference frequency input

VDD_PLL

PLL digital power supply

Vsupply analog1= 3.3 V

DBUS_SEL

Digital Bus Interface select

CMOS Input

VDD_DIG

Power supply for digital bus interface

Vsupply digital = 3.3 V

SDA/DATA

I2CBUS /SPI data line

CMOS Bidir Schmitt triggered

SCL/CLK

I2CBUS /SPI clock line

CMOS Input Schmitt triggered

LOAD

SPI load line

CMOS Input Schmitt triggered

Not connected

IF_OUTN

IF amplifier negative output

Open collector @ 5 V(1)

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