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SA900

I/Q transmit modulator

Philips Electronics 

Philips Semiconductors

I/Q transmit modulator

Preliminary specification

SA900

AC ELECTRICAL CHARACTERISTICS

VCC = +4.0V, TA = 25°C; TANK_1 = 120MHz @ 0 dBm; XO_REF = 30MHz @ –5 dBm; TxLO2 = –13 dBm, unless otherwise stated.

SYMBOL PARAMETER

TXLO_1/2 Transmit LO input (AC couple) (50Ω)

TEST CONDITIONS

Input power

VSWR (50Ω)

LIMITS

UNITS

MIN

TYP

MAX

-13

-101

dBm

2:1

Frequency range

900

1040

MHz

TANK_1/2 VCO tank differential inputs

Frequency range

901

120

1401

MHz

PHSOUT Phase detector charge pump output

IPEAK PHSOUT programming

XTAL_1 XO transistor base

CLK1

CLK2

MCLK

XO divide 3/1, power down SM1=0, 50%

duty cycle

÷3, X=1, ÷1, X=0

XO divide 2/1, power down SM2=0

÷2, Y=1, ÷1, Y=0

XO divide 4/5/1, 50% duty cycle

÷4, CLKSET = VCC, ÷5, CLKSET = 0.5VCC,

÷1, CLKSET = 0V

Serial data clock input, 33% duty cycle

Output level

RSET = 24kΩ, AD=0

RSET = 24kΩ, AD=1

XO frequency

External drive

Frequency range

Output level, 5kΩ || 7pF

Frequency range

Output level, 5kΩ || 7pF

Frequency range

Output level, 5kΩ || 7pF

Max clock rate

0.5

200

0.9

101

1501

3.331

0.7

51

0.7

21

0.7

VCC–0.5

V

300

400

µA

1.2

1.5

mA

30

451

MHz

350

5001

mVP-P

30

451

MHz

1

1.4

VP-P

30

451

MHz

1

1.4

VP-P

451

MHz

1

1.4

VP-P

101

MHz

CLOCK

Serial interface (CMOS levels)

DATA, CLOCK, STROBE, TXEN

AMPS output, SE=1, AD=0, TXEN=1 (AC

couple)

Logic LOW

Logic HIGH

Frequency range

0.7VCC

820

0.3VCC1

860

V

V

MHz

VSWR

2:1

Output level

–1.5

+2

dBm

869 to 894MHz

-104

dBm

824 to 849MHz

-47

dBc

AMPSTX Spurious output

2 to 824MHz

849 to 869MHz

-41

dBc

-41

dBc

894MHz to 8.49GHz

-41

dBc

TXLO and harmonics

-21

dBc

Adjacent channel noise power

@30kHz

-95

dBc/Hz

Alternate channel noise power

@60kHz

-101

dBc/Hz

Broadband noise power

869 to 894MHz

-136

dBm/Hz

DUAL output, SE=1, AD=1, TXEN=1 (with

external matching Figure 9)

Frequency range

820

9202

MHz

DUALTX

VSWR

2:1

Output level (avg) (I and Q

quad, 0dB VGA)

0

+2

dBm

Gain flatness

1

dB

1997 Sept 16

8

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