Maxim RRFP1A/T Manual de usuario descargar pdf (Pagina 9)

Single-/Dual-Band 802.11a/b/g

World-Band Transceiver ICs

AC ELECTRICAL CHARACTERISTICS—802.11g Tx Mode (MAX2829) (continued)

(MAX2829 evaluation kit: V

= +2.7V, f

OUT

= 2.437GHz, f

REFOSC

= 40MHz, SHDN = TXENA = CS = high, RXENA = SCLK = DIN =

low, R

BIAS

= 11kΩ, 100mV

RMS

sine and cosine signal (or 100mV

RMS

, 54Mbps IEEE 802.11g I/Q signals wherever OFDM is men-

tioned) applied to baseband I/Q inputs of transmitter, registers set to default settings and corresponding test mode, T

= +25°C,

unless otherwise noted.) (Table 4)

PARAMETER CONDITIONS

MIN TYP MAX

UNITS

2/3 x f

-64

4/3 x f

-61

5/3 x f

-63

RF Spurious Signal Emissions

B6:B1 = 111011, OFDM

signal

8/3 x f

-52

dBm/

MHz

Nominal mode 12

Turbo mode 1 18

Baseband -3dB Corner

Frequency

(See the Lowpass Filter

section)

Turbo mode 2 24

MHz

Baseband Filter Rejection

At 30MHz, in nominal mode (see the Lowpass Filter

60 dB

Minimum differential resistance 60 kΩ

Tx Baseband Input Impedance

Maximum differential capacitance 0.7 pF

TRANSMITTER LO LEAKAGE AND I/Q CALIBRATION USING LO LEAKAGE AND SIDEBAND DETECTOR (SEE THE Tx/Rx

CALIBRATION MODE SECTION)

Tx BASEBAND I/Q INPUTS TO RECEIVER OUTPUTS

Output at 1 x f

TONE

(for LO leakage

= -29dBc), f

TONE

= 2MHz,

100mV

RMS

-3

LO Leakage and Sideband-

Detector Output

Calibration register,

D12:D11 = 11,

A3:A0 = 0110

Output at 2 x f

TONE

(for sideband

suppression = -40dBc), f

TONE

2MHz, 100mV

RMS

-13

dBV

RMS

Amplifier Gain Range D12:D11 = 00 to D12:D11 = 11, A3:A0 = 0110 26 dB

Lower -3dB Corner Frequency

MHz

MAX2828/MAX2829

Maxim Integrated

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 38 39

MAX2828/MAX2829 1

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