STA8089FG datasheet(24/34 Pages) STMICROELECTRONICS

Part #	STA8089FG

Description	Fully integrated GPS/Galileo/GLONASS/BeiDou/QZSS receiver with embedded RF and in-package Flash

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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Electrical characteristics

STA8089FG

24/34

DocID027175 Rev 8

Table 17

lists the DC characteristics for the 1.0 V IO digital buffers input buffers: STBYn

(24), STDBY_OUT (23), WAKEUP (26) and RSTn (25).

4.8

AC characteristics

4.8.1

RF electrical specifications

VIH(1)

Logical input high level

voltage

VDDIO = 1.8 V

0.7 * VDDIO

—VDDIO + 0.3

V

VDDIO = 3.3V

2.0

—

VDDIO + 0.3

V

VHYST(2) Schmitt-trigger hysteresis

–

50

—

mV

VOL

Low level output voltage

VDDIO = 1.8 V

—

0.4

V

VDDIO = 3.3V

—

0.4

V

VOH

High level output voltage

VDDIO = 1.8 V

VDDIO - 0.4

—

V

VDDIO = 3.3V

VDDIO - 0.4

—

V

1. Excludes oscillator inputs RTC_XTI and XTAL_IN. Refer to oscillator electrical specifications.

2. Apply to all digital inputs unless specified otherwise.

Table 17. 1.0 V I/O buffers DC characteristics

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

VIL

Logical input low level voltage VOB = 1.0 V

-0.3

—

0.35 * VOB

V

VIH

Logical input high level voltage VOB = 1.0 V

0.65 * VOB

—VOB + 0.3

V

VOL

Low level output voltage

VOB = 1.0 V

—

0.2

V

VOH

High level output voltage

VOB = 1.0 V

VOB - 0.2

—

V

Table 16. I/O buffers DC characteristics (continued)

Symbol

Parameter

Test

conditions

Min.

Typ.

Max.

Unit

Table 18. RFACHAIN – GALGPS filter and VGA

Symbol

Parameter

Test conditions

Min

Typ

Max

Unit

S11(1)

Input return loss

GPS band

—

-8

dB

fIF

IF frequency

PLL in default condition with

26Mhz as reference

—4.045

MHz

NF

Noise figure

NF overall chain with AGC set

at 0 dB

—2(1)

dB

CG

Conversion gain from

RF input to ADC input

VGA at min gain

—

69

dB

VGA at max gain

—

119

dB

IP1dB

RF-IF-VGA input

compression point

VGA min

—

-80

dBm

IRR

Image rejection ratio

—

20

dB

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