SA900 查看數據表（PDF） - Philips Electronics
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SA900 Datasheet PDF : 20 Pages
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Philips Semiconductors
I/Q transmit modulator
Preliminary specification
SA900
PERFORMANCE CHARACTERISTICS
–43.00
–43.50
–44.00
VCC = –40°C
VCC = 85°C
VCC = 27°C
–44.50
–45.00
–45.50
–46.00
–46.50
–47.00
–47.50
820
836
850
FREQUENCY (MHz)
DUALTX Carrier Suppression vs. Frequency
(VCC = 4.0, TXLO = –10dBm Single Sideband Mode,
With Respect to Lower Sideband)
–44.50
–45.00
–45.50
VCC = 4.5V
VCC = 4.0V
VCC = 3.9V
–46.00
–46.50
–47.00
–47.50
820
836
850
FREQUENCY (MHz)
DUALTX Sideband Suppression vs. Frequency
(Temperature = 27°C, TXLO = –10dBm Single
Sideband Mode, With Respect to Lower Sideband)
–34.00
–36.00
–38.00
VCC = –85°C
VCC = –40°C
VCC = 27°C
–40.00
–42.00
–44.00
–46.00
–48.00
820
836
850
FREQUENCY (MHz)
DUALTX Sideband Suppression vs Frequency
(VCC = 4.0V, TXLO = –10dBm Single Sideband
Mode, With Respect to Lower Sideband)
–32
–33
VCC = 3.9V
–34
VCC = 4.0V
VCC = 4.5V
–35
–36
–37
–38
–39
–40
–41
–42
–40
27
85
TEMPERATURE (°C)
DUALTX 3rd Order Products vs Temperature
(TXLO = –10dBm, f = 836MHz, 0dB VGA I/Q Inphase)
–30.00
–35.00
–40.00
VCC = 3.9V
VCC = 4.0V
VCC = 4.5V
–45.00
–50.00
–55.00
0 2 5 7 10 13 15 18 20 23 25 26 29 33 37 40 44 48 51 55 59 63
VGA 6-BIT WORD VALUE (LSBs)
DUALTX Carrier Suppression vs VGA Range
(27°C, f = 836MHz, TXLO = –10dBm)
–30.00
–35.00
–40.00
T = +85°C
T = +27°C
T = –45°C
–45.00
–50.00
–55.00
–60.00
0 2 5 7 10 13 15 18 20 23 25 26 29 33 37 40 44 48 51 55 59 63
VGA 6-BIT WORD VALUE (LSBs)
DUALTX Carrier Suppression vs VGA Range
(VCC = 4.0V, f = 836MHz, TXLO = –10dBm)
Figure 13. Performance Characteristics
SR00648
1997 Sept 16
17
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