2400 MHz Digital Spread Spectrum Transceiver

RF109

100646A

Conexant

9

1/19/00

Conexant Proprietary

Table 3. Electrical Specifications (2 of 3)

Parameter

Min

Typical

Max

Units

Transmitter Section

Gain variation vs. frequency

2400 MHz

0.5

1.5

dB

High power mode (PS1 = 0, PS2 = 0)

Medium power mode (PS1 = 0, PS2 = 1)

Low power mode (PS1 = 1, PS2 = 0)

Undefined mode (PS1 = 1, PS2 = 1)

–10.5

–8.0

–18

–26.5

not used

–5.0

dBm

IM3

(TXD input signal 2 tones each 60 mVpp)

–35

dBc

LO suppression relative to peak

–25

–15

dBc

TXD input impedance

10

k

Ω

TXD input peak-to-peak baseband spread spectrum signal for specified output

peak envelope power

100

TXD input bandwidth

80

MHz

TXD to RF settle time to within spec value from TXEN

50

µs

Input high voltage, PS1, PS2, TXEN

VIH

Input low voltage, PS1, PS2, TXEN

VIL

1.9

0.75

V

Input high current, PS1, PS2, TXEN

IIH

Input low current, PS1, PS2, TXEN

IIL

–10

60

µA

Input high current TXEN

IIH

Input low current TXEN

IIL

–10

100

µA

Frequency Synthesizer Section

Synthesizer frequency range

2392.2

2505.6

MHz

Differential LO input power across VCO1 and VCO2

–17

–13

–9

dBm

Input reference frequency, FREF

9.6

MHz

1800

kHz

Comparison frequency (600 kHz) spur level

–60

dBc

Input high voltage, STROBE, CLK, DATA, SYNTHEN

VIH

Input low voltage, STROBE, CLK, DATA, SYNTHEN

VIL

1.9

0.75

V

Input high current, STROBE, CLK, DATA

IIH

Input low current, STROBE, CLK, DATA

IIL

–10

40

µA

Input high current, SYNTHEN

IIH

Input low current, SYNTHEN

IIL

–10

100

µA

Input high voltage, FREF

VIH

Input low voltage, FREF

VIL

1.9

0.75

V

Input high current, FREF

IIH

Input low current, FREF

IIL

–10

100

µA

Charge-pump output current

±250

µA

Output short-circuit current

CHPO

1.0

mA