Product overview
Description
The STA5635S is a fully integrated RF front-end able to support different bands (L1/E1, L2C, L5/E5/E6) thanks to a programmable and flexible RF-IF chain driven by a fractional PLL. In particular, STA5635S 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.
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 STA5635S 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.
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All features
- AEC-Q100 Grade 2
- Multi GNSS band support (L1/E1, L2C, L5/E5/E6)
- Programmable IF bandwidth (7 or 13 MHz range)
- 3.3 V supply voltage
- Fractional-N synthesizer with embedded loop filter
- SPI Interface for full programmability
- 2 Bit A/D converter
- ASIL compliance
- Operating temperature (-40, +105 °C)
- CMOS040 technology
- QFN5x5 32 leads package
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STMicroelectronics - STA5635S
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| STA5635S | Active | VFQFPN 5X5X1 32L P0.5 | Automotive Safety | Ecopack2 | |
| STA5635STR | Active | VFQFPN 5X5X1 32L P0.5 | Automotive Safety | 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
| Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | |||||||||||||
| STA5635STR | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
| STA5635S | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
STA5635STR Active
STA5635S Active
(*) 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