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AS3977 Fiches technique(PDF) 12 Page - ams AG

No de pièce AS3977
Description  Multi-Channel Narrowband FSK Transmitter
PDF  47 Pages
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Fabricant  AMSCO [ams AG]
Site Internet  http://www.ams.com
Logo AMSCO - ams AG

AS3977 Fiches technique(HTML) 12 Page - ams AG

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www.austriamicrosystems.com/AS3977
Revision 3.6
12 - 47
AS3977
Data Sheet - E l e c t r i c a l C h a r a c t e r i s t i c s
Table 10. Power Amplifier (865 - 870 MHz and 902 - 928 MHz Bands)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
POUT
Min Output Power
@ 50
Ω
VSUP=3V, @ 25ºC,
Power depending on power setting with or
without the use of the internal voltage
regulator,
external matching network included
-20
dBm
POUT
Max Output Power
@ 50
Ω
VSUP=3V, @ 25ºC,
Power depending on power setting with or
without the use of the internal voltage
regulator, external matching network
included
4dBm
POUT
Output Power Variation @ 50
Ω
1
VSUP=3V, @ 25ºC,
Power depending on register setting with
or without the use of the internal voltage
regulator, external matching network
included, strong AB operation mode
2
-3.5
+3.5
dBm
POUT
Output Power Variation vs. VDD and
Temperature @ 50
Ω
VSUP=2.2…3.6V,
TAMB= -40…85ºC,
With the use of the internal voltage
regulator, external matching network
included, strong AB operation mode
2
+2.0 /
-3.0
dB
POUT
Output Power Variation vs.
Temperature @ 50
Ω
VSUP=3V,
TAMB=-40…85ºC,
Without the use of the internal voltage
regulator, external matching network
included, strong AB operation mode
2
+2.0 /
-3.0
dB
1. Limits by production test measurement uncertainties
2. Power line matching needs to be adjusted to VDD to ensure strong AB operation mode
Table 11. Antenna Tuning Circuit
Symbol
Parameter
Conditions
Min
Typ
Max
Units
CAtmin
Minimum Antenna tuning Capacitor
ATCPH <3:0> = 0000
0.11
pF
CAtmax
Maximum Antenna tuning Capacitor
ATCPH <3:0> = 1111
1.51
pF
Table 12. Low Power Reset (Bit LT)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
VLPR
Low Power Detection Threshold
Voltage
Decreasing Supply Voltage
1.85
1.95
2.05
V
VLPR
Low Power Release Threshold
Voltage
Rising Supply Voltage
2.05
V
Table 13. Low Supply Voltage Detector (Bit LS)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
VLS
Low Supply Detection Threshold
Voltage
Decreasing Supply Voltage
2.0
2.1
2.2
V
VLS
Low Supply Release Threshold
Voltage
Rising Supply Voltage
2.17



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