STA5635A

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GNSS Multifrequency Multiconstellation RF front-end

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Product overview

Description

The chip is a fully integrated RF front-end able to support different bands (L1, L2, L5, L6 and L) thanks to a programmable and flexible RF-IF chain driven by a fractional PLL. In particular, G5RF is able to manage all the GNSS constellations available and planned in the next future like GPS, Galileo, Glonass, BeiDou, IRNSS and QZSS.

The RF_IF chain is followed from a 2-bit ADC able to convert the IF signal to Sign (SIGN) and Magnitude (MAG) bit. The MAG bit is internally integrated in order to control the variable gain amplifiers. The VGA gain can be also set by the SPI interface.

Further, it is able to manage L-band signal from 1525 to 1559 MHz, in this case a dedicated 10bit ADC is used and the SPI interface to transmit low data rate data in L band support.

A digital interface, JESD207 compliant, is used only to transmit GNSS data and clock to external baseband.

The embedded fractional PLL allows supporting a wide range of reference clocks (10 to 55 MHz) and generates a sampling clock available for the baseband.

The STA5635A embeds two LDOs to supply at 1.1 V the analog and digital cores of the device facilitating requirements to external power supply. A third LDO can be turned-on to supply at 1.8 V external active components as a TCXO.

The chip is manufactured in CMOS040nm Technology and housed in a QFN package.

  • All features

    • AEC-Q100 qualified
    • Multi GNSS band support (L1/E1, L2C, L5/E5/E6/L6 and L band)
    • Programmable IF bandwidth (7 or 13 MHz range)
    • 1.62 V to 3.6 V supply voltage range
    • Smart digital interface (JESD207- COMPATIBLE)
    • Fractional-N synthesizer with embedded loop filter
    • SPI interface for full programmability and interface to transmit L-band data bit
    • 2 Bit A/D converter
    • Operating temperature (-40 °C, 105 °C)
    • CMOS040 technology
    • QFN5x5 32leads package

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STMicroelectronics - STA5635A

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STA5635A
Active
VFQFPN 5X5X1 32L P0.5 Automotive Ecopack2

STA5635A

Package:

VFQFPN 5X5X1 32L P0.5

Material Declaration**:

PDF XML

Marketing Status

Active

Package

VFQFPN 5X5X1 32L P0.5

Grade

Automotive

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

Sample & Buy

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ECCN (EU)
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Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
STA5635A Available at distributors

Distributor availability of STA5635A

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No availability of distributors reported, please contact our sales office
Active
7A994 NEC Tray VFQFPN 5X5X1 32L P0.5 -40 105 PHILIPPINES

STA5635A Active

Package:
VFQFPN 5X5X1 32L P0.5
ECCN (US):
7A994
Budgetary Price (US$)*/Qty:
-

Part Number:

STA5635A

ECCN (EU):

NEC

Packing Type:

Tray

Operating Temperature (°C)

Min:

-40

Max:

105

Country of Origin:

PHILIPPINES

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(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors