RF133 데이터 시트보기 (PDF) - Conexant Systems

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RF133

RF/IF Transceiver For GSM Applications

Conexant Systems 

RF133

VCC

External

Resonator

RES1

(pin 28)

RES2

(pin 29)

Vtune

RF/IF Transceiver

RF133

C321

Figure 5. RF133 Internal VCO

Parameter

Ambient Operating Temperature

Storage Temperature

Power Dissipation

Supply Voltage (VCC)

Input Voltage Range

Table 3. Absolute Maximum Ratings

Minimum

–40

–50

0

GND

Maximum

+85

+125

600

+5

VCC

Units

°C

°C

mW

V

V

The charge pump current can be programmed to be either 1 mA

or 0.5 mA and the translation loop can also be programmed to

allow for high side or low side injection of the first LO input with

respect to the transmit RF.

Even greater flexibility in the transceiver frequency planning is

possible because of the programmable dividers in the feedback

and the reference paths.

The absolute maximum ratings of the RF133 are provided in

Table 3, and the electrical specifications are provided in Table 4.

Tables 5, 6, and 7 detail the setting of the programmable

operation modes. Figure 6 illustrates the timing of the three-wire

bus control signal and Figure 7 provides a graph of the input

compression versus the receiver gain.

Figure 8 shows a typical application circuit diagram. Figure 9

provides the package dimensions for the 48-pin device.

6

October 8, 1999

Conexant

Proprietary Information and Specifications are Subject to Change

100776A

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