SA900BE datasheet(17/20 Pages) PHILIPS

17 / 20 page

Philips Semiconductors

Preliminary specification

SA900

I/Q transmit modulator

1997 Sept 16

PERFORMANCE CHARACTERISTICS

820

836

850

–43.00

–44.00

–44.50

–45.00

–45.50

–46.00

–46.50

DUALTX Carrier Suppression vs. Frequency

(VCC = 4.0, TXLO = –10dBm Single Sideband Mode,

With Respect to Lower Sideband)

FREQUENCY (MHz)

–47.50

–47.00

820

836

850

–44.50

–45.00

–45.50

–46.00

–47.00

–47.50

DUALTX Sideband Suppression vs. Frequency

(Temperature = 27

°C, TXLO = –10dBm Single

Sideband Mode, With Respect to Lower Sideband)

FREQUENCY (MHz)

820

836

850

–34.00

FREQUENCY (MHz)

DUALTX Sideband Suppression vs Frequency

(VCC = 4.0V, TXLO = –10dBm Single Sideband

Mode, With Respect to Lower Sideband)

–40

–41

–42

DUALTX 3rd Order Products vs Temperature

(TXLO = –10dBm, f = 836MHz, 0dB VGA I/Q Inphase)

TEMPERATURE (

°C)

–30.00

DUALTX Carrier Suppression vs VGA Range

(27

°C, f = 836MHz, TXLO = –10dBm)

VGA 6-BIT WORD VALUE (LSBs)

–35.00

–40.00

–45.00

–50.00

–55.00

10 1315 1820 232526 2933 3740 4448 515559 63

–30.00

DUALTX Carrier Suppression vs VGA Range

(VCC = 4.0V, f = 836MHz, TXLO = –10dBm)

VGA 6-BIT WORD VALUE (LSBs)

–35.00

–40.00

–45.00

–50.00

–55.00

25710 13 15 18 20 23 25 26 29 33 37 40 44 48 51 55 59 63

–60.00

VCC = 3.9V

VCC = 4.0V

VCC = 4.5V

–36.00

–38.00

–40.00

–42.00

–44.00

–46.00

–48.00

T = +85

°C

T = +27

°C

T = –45

°C

SR00648

–43.50

–46.50

–37

–38

–39

–34

–35

–36

–33

–32

VCC = –40°C

VCC = 85°C

VCC = 27°C

VCC = 4.5V

VCC = 4.0V

VCC = 3.9V

VCC = –85°C

VCC = –40°C

VCC = 27°C

VCC = 3.9V

VCC = 4.0V

VCC = 4.5V

Figure 13. Performance Characteristics

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