SA1921 Просмотр технического описания (PDF) - Philips Electronics
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SA1921 Datasheet PDF : 36 Pages
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Philips Semiconductors
Satellite and cellular dual-band RF front-end
Product specification
SA1921
AC ELECTRICAL CHARACTERISTICS
High-Band, Single Mode of Operation
LNA and Image Reject Mixer
VCC = +3.75 V, FreqRF = 1550 MHz, FreqLO = 1713 MHz, PLOin = –3 dBm, TA = +25_C; unless otherwise stated.
PARAMETERS
MIN
–3s
TYP.
+3s
RF Input Frequency Range
1515
IF Frequency
150
163
LO Frequency
1665
Power Gain
21.5 22.2 22.9
Power Gain Reduction (Strong Signal Mode—LNA Off)
34
47
60
Noise Figure
3.7
3.9
4.1
Input Impedance, RF Port
50
Return Loss at Inputs
LO leakage at RF Port
–48
1 dB RF Input Compression Point
–24
IP3 (3RD Order Intermodulation Product)
Referred to the RF Input Port
–14 –11.5
–9
(2 x LO) – (2 x RF) Spur Performance
–62
–50 dBm IN Referred to RF Input Port
Measure at LO = 1688 MHz and RF = 1606 MHz
MAX
1600
185
1785
–10
(3 x LO) – (3 x RF) Spur Performance.
–50 dBm IN Referred to RF Input Port.
Measure at LO = 1688 MHz and RF = 1634 MHz.
Image rejection, fRX+2fIF
Referred to the RF Input Port
LO Input Power
Turn ON/OFF Time
–102
31.5
34
36.5
–5
–3
–1
10
UNITS
MHz
MHz
MHz
dB
dB
dB
W
dB
dBm
dBm
dBm
NOTES
1
dBc
dBc
dB
dBm
msec
High-Band LO Buffer
VCC = +3.75 V, FreqLO = 1713 MHz, PLOin = –3 dBm, TA = +25_C; unless otherwise stated.
PARAMETERS
MIN
–3s
TYP.
+3s MAX UNITS NOTES
LO Frequency Range
1665
1785 MHz
Differential Output Power
–9
dBm
Differential Output Impedance
100
W
Harmonic Content
–20
dBc
Input Power
–5
–3
–1
dBm
Input Impedance
50
W
1
Turn On/Off Time
10
msec
NOTE:
1. External matching network is required.
1999 Mar 02
9
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