RF2958 Просмотр технического описания (PDF) - RF Micro Devices

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RF2958

2.4GHz SPREAD-SPECTRUM TRANSCEIVER

RF Micro Devices 

RF2958

Parameter

Receiver

IF VGA/Baseband, cont’d

Group Delay

Filter Rejection

Output Impedance

I/Q Magnitude Error

I/Q Phase Error

I/Q DC Offset

DC Step

VREF

VREF Output Current

Transmitter

Modulator/Baseband

I/Q Magnitude Error

I/Q Phase Error

Input Signal (Single-Ended)

Input Signal Magnitude

Input P1dB

Voltage Gain to IF

Output Voltage

Output SNR

Carrier Leakage

VGA Driver/Upconverter

Input P1dB

Input Referred Noise

Minimum Gain

Maximum Gain

Gain Response Time

Image Rejection

RF LO Leakage

Output Voltage

Minimum Output Power

Maximum Output Power

Specification

Min.

Typ.

Max.

15

20

±0.35

±3.0

10

40

1.65

1.7

1.75

1.0

±0.35

±3.0

200

282

566

4

6

8

448

564

710

32

-20

550

20

0

17

300

30

-25

-36

1000

-12

0

Unit

Condition

ns

dB

Transfer function - 3 pole Bessel at 9MHz

Ω

f < 1 MHz

dB

°

mV

SQRT [(VOUTI-VREF)^2+(VOUTQ-VREF)^2)]

mV

VGC step 1.3V to 1.8V, PIN=-50dBm

V

3% variation

mA

Source

dB

°

mVP-P

mVP-P

mVP-P

dB

mVP-P

dB

dBc

mVP-P

uVRMS

dB

dB

ns

dB

dBm

mVP-P

dBm

dBm

SQRT(I ^ 2 + Q ^ 2)

6dB from input

Measure from complex magnitude to IFVP-P

Connected to SAW filter

Single sideband modulation

6dB from max input

Measured in 11MHz bandwidth at 2.442GHz

upconverter gain >12dB

TX VGC at 1.3V

TX VGC at 1.9V

Measured with 300mV change in gain on

TXVGC to 90% of final POUT.

FLO=2048MHz to 2110MHz

802.11b output with 7dB to 20dB gain

(needed for +20dBm POUT).

TXVGC at 1.3V

Meeting 802.11b Spectral Mask

Rev A0 050209

11-265

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