RF2938 データシートの表示（PDF） - RF Micro Devices

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RF2938

2.4GHZ SPREAD-SPECTRUM TRANSCEIVER

RF Micro Devices 

RF2938

Absolute Maximum Ratings

Parameter

Rating

Supply Voltage

-0.5 to +3.6

Control Voltages

-0.5 to +3.6

Input RF Level

LO Input Levels

Operating Ambient Temperature

Storage Temperature

Moisture Sensitivity

+12

+5

-40 to +85

-40 to +150

JEDEC Level 5 @ 220°C

Unit

VDC

VDC

dBm

dBm

°C

°C

Refer to “Handling of PSOP and PSSOP Products” on page 16-15 for

special handling information.

Refer to “Soldering Specifications” on page 16-13 for special solder-

ing information.

Caution! ESD sensitive device.

RF Micro Devices believes the furnished information is correct and accurate

at the time of this printing. However, RF Micro Devices reserves the right to

make changes to its products without notice. RF Micro Devices does not

assume responsibility for the use of the described product(s).

11

Parameter

Overall Receiver

RX Frequency Range

Cascaded Voltage Gain

Cascaded Noise Figure

Cascaded Input IP3

Cascaded Input IP3

RSSI Dynamic Range

RSSI Output Voltage Compli-

ance

IF LO Leakage

Quadrature Phase Variation

Quadrature Amplitude Offset

Quadrature Amplitude Variation

IF AMP and Quad Demod

Gain Control Range

Noise Figure

IF Input Impedance

Input IP3

RX Baseband Amplifiers

THD

Gain Control Range

Specification

Min.

Typ.

Max.

45

500

8 to 93

5

30

105

60

1.1 to 2.3

-68

±2

+0.25

±0.25

±5

+0.5

43

5

230 - j400

75 - j350

-68

-8

3

3

30

Output Voltage

DC Output Voltage

RX Baseband Filters

Baseband Filter 3dB Bandwidth

1

Passband Ripple

Baseband Filter 3dB Frequency

Accuracy

Group Delay

Group Delay

Baseband Filter Ultimate Rejec-

tion

Output Impedance

500

1.7

35

0.1

±10

±30

15

400

> 80

20

Unit

MHz

dB

dB

dBµV

dBµV

dB

V

dBm

°

dB

dB

dB

dB

Ω

Ω

dBm

dBm

%

%

dB

mVPP

V

MHz

dB

%

ns

ns

dB

Ω

Condition

T=25 °C, VCC=3.3V, Freq=280MHz,

RBW = 10 kΩ

Dependent upon RX VGC

At maximum gain.

VGC <1.2V

VGC>2.0 V

At VGC=1.4V

Maximum RSSI is 2.5V or VCC-0.3, which-

ever is less. VGC=1.4V

f=280MHz, LO Power=-10dBm

With expected LO amplitude and harmonic

content. R1=270kΩ.

Q>I

VGC <1.2V max gain, VGC>2.0V=min gain

Single Sideband

Single ended. 280MHz

Single ended. 374MHz

VGC < 1.2 V

VGC > 2.0 V

At maximum gain setting

At minimum gain setting

VGC<1.2V=max gain,

VGC>2.0V=min gain

RL>5kΩ, CL<5pF

5th order Bessel LPF. Set by BW CTRL

At 35MHz, increasing as bandwidth

decreases.

At 2MHz.

Designed to drive>5kΩ, <5pF load.

2-2

Rev A8 010418

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