STA5635A datasheet(7/20 Pages) STMICROELECTRONICS

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DS12858 Rev 2

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STA5635A

Pin description

TP_IF_P/Sense1(1)

RF/IF receiver chain test positive output/

Antenna Sense1 input

1.8/3.3 V

Analog

TP_IF_N/Sense2(1)

RF/IF receiver chain test negative output/

Antenna Sense2 input

1.8/3.3 V

Analog

V11_OUT_RF

LDO RF output: supply (1.1 V) for RF section

1.1 V

Supply

VCC_RF

Voltage supply 1.62-3.6 V for LDO RF

1.8/3.3 V

Supply

V11_PLL

PLL power supply (1.1 V)

1.1 V

Supply

TCXO_IN

TCXO input (DC coupled)

1.1 V

Analog

Not connected

—

CHIP_EN

Enable for the whole chip

1.8/3.3 V

Digital

V11_OUT_DIG

LDO DIG output: power supply (1.1 V) for digital

interface and IO ring

1.8/3.3 V

Supply

GND_DIG

Ground for digital

1.8/3.3 V

Ground

VCC_IO

Voltage supply 1.62-3.6 V for digital and IO LDOs

1.8/3.3 V

Supply

V18_OUT

LDO 1.8V output: supply 1.8 V for external BOM

1.8/3.3 V

Supply

TCXO_CLK

TCXO Buffered Output at 1.1 V at VCC_IO

1.8/3.3 V

Analog/Digital

GND_IO

I/Os Ground

1.8/3.3 V

Ground

Q-sign2

Q-sign of secondary chain

1.8/3.3 V

Digital

I-mag2

I-mag of secondary chain

1.8/3.3 V

Digital

I-sign2

I-sign of secondary chain

1.8/3.3 V

Digital

Q-mag2

Q-mag of secondary chain

1.8/3.3 V

Digital

I-mag1

I-mag of main chain

1.8/3.3 V

Digital

I-sign1

I-sign of main chain

1.8/3.3 V

Digital

Q-sign1

Q-sign of main chain

1.8/3.3 V

Digital

Q-mag1

Q-mag of main chain / Interrupt (LBand Mode)

1.8/3.3 V

Digital

SPI_CLK

Serial Parallel Interface Clock

1.8/3.3 V

Digital

SPI_DI

Serial Parallel Interface Data Input

1.8/3.3 V

Digital

SPI_DO

Serial Parallel Interface Data Output

1.8/3.3 V

Digital

SPI_NCS

Serial Parallel Interface Chip Select

1.8/3.3 V

Digital

LNA_IN

LNA input, DC coupled

1.1 V

Analog

LNA_GND

Ground for LNA signal

1.1 V

Ground

GND

Ground

1. Selectable by SPI programming.

Table 1. Pin out (continued)

Name

Description

Supply

domain

Type

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