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STA8090GA датащи(PDF) 26 Page - STMicroelectronics

номер детали STA8090GA
подробное описание детали  Automotive GPS/Galileo/GLONASS/BeiDou/QZSS receiver
PDF  32 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA8090GA датащи(HTML) 26 Page - STMicroelectronics

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Electrical characteristics
STA8090GA
26/32
DS10820 Rev 5
4.8.3
OSCI oscillator specifications
The supported values of the embedded BOOT ROM are 16.368 MHz, 24.00 MHz,
26.00 MHz and 48.00 MHz.
The default values supported by the GNSS binary image is 26 MHz and 48 MHz, to enable
USB peripheral the 48 MHz is mandatory.
4.8.4
ADC specifications
This section gives the AC specification of the 10 bit Successive Approximation Register
ADC embedded in STA8090GA device. It is controlled by the ARM9 MCU through a
wrapper and an APB bridge as depicted in Figure 4 and it has a maximum conversion rate
of 1MSPS with 8 muxed analog input channels capability. An internal voltage reference is
used and analog/digital power supplies connections are implemented inside the device
without any needs of dedicated external pins.
Figure 4. SARADC connections
Table 23. Characteristics of external slow clock input
Symbol
Parameter
Min.
Typ.
Max.
Unit
TJIT (cc)
Cycle-to-cycle jitter
-70
—
70
ps
TJIT (per)
Period jitter
-70
—
70
ps
Variation
-500
—
500
ppm
TDUTY
Duty cycle
45
—
55
%
REFP
REFN
AIN0
AIN1
AIN7
VREF
D[9:0]
SARADC
ADC WRAPPER
VINL1
VDD12_MVR
APB
Bridge2
ADC_IN1
ADC_IN2
ADC_IN8
GND



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