CX74037 データシートの表示（PDF） - Conexant Systems

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CX74037

Transmit RF IC for TDMA or AMPS Applications

Conexant Systems 

Transmit RF IC for TDMA or AMPS Applications

Table 4. RF150 Electrical Characteristics (3 of 3)

VDD = 2.7 V, –40 oC < TA < +85 oC, unless specified

Parameter

Symbol Test Conditions

Min

Typical

Max

PCS PA Driver

Input return loss (reference to 50 Ω)

–15

Output frequency

1850

1910

Gain

15

16

17

Output power level @ 16 dB gain

8.0

Output P1dB

14

ACPR in 30 kHz band at 30 kHz offset @ 8.0

–32

dBm output; cascaded

ACPR in 30 kHz band at 60 kHz offset @ 8.0

–55

dBm output; cascaded

Output return loss (reference to 50 Ω)

–15

Noise figure

9

10

Operating temperature range

–30

+25

+80

External bias resistor value for +16 dBm of

130

P1dB

Table 5. Control Signal Truth Table

Signal Name

VGA_ENA

DRV_ENA

BAND

PULL_ENA

IF_Select

MODE

Logic 1

ON

ON

PCS

ON

IF VCO IN1

TDMA

Logic 0

OFF

OFF

Cell

OFF

IF VCO IN2

FM

Remark

Cell and PCS band

IF VCO, RF mixer buffers, divide-by-2

In FM mode:

Normal DC bias on I+,

0 V bias on I–

CX74037

Units

dB

MHz

dB

dBm

dBm

dBc

dBc

dB

dB

°C

Ω

101103A

Conexant – Proprietary

7

September 27, 2000

Data Subject to Change

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