MAX2837(2008) データシートの表示（PDF） - Maxim Integrated

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MAX2837
(Rev.:2008)

2.3GHz to 2.7GHz Wireless Broadband RF Transceiver

Maxim Integrated 

2.3GHz to 2.7GHz Wireless

Broadband RF Transceiver

AC ELECTRICAL CHARACTERISTICS—Rx MODE (continued)

MAX2837 evaluation kit: VCC_ = 2.8V, fRF = 2.502GHz, fLO = 2.5GHz; receiver baseband I/Q outputs at 90mVRMS

(-21dBV), fREF = 40MHz, ENABLE = RXENABLE = CS = high, TXENABLE = SCLK = DIN = low, with power matching for the differential RF

pins using the typical applications and registers set to default settings and corresponding test mode, TA = +25°C, unless otherwise noted.

Lowpass filter is set to 10MHz RF channel BW. Unmodulated single-tone RF input signal is used, unless otherwise indicated.) (Note 1)

PARAMETER

CONDITIONS

MIN

Max RF gain (B7:B6 = 00)

In-Band Input P-1dB

Max RF gain - 8dB (B7:B6 = 01)

Max RF gain - 16dB (B7:B6 = 10)

Max RF gain - 32dB (B7:B6 = 11)

Maximum Output Signal Level

Over passband frequency range; at any gain setting;

1dB compression point

Max RF gain (B7:B6 = 00), AGC set for -65dBm

wanted signal

Out-of-Band Input IP3 (Note 2)

Max RF gain - 8dB (B7:B6 = 01), AGC set for -55dBm

wanted signal

Max RF gain - 16dB (B7:B6 = 10), AGC set for -40dBm

wanted signal

I/Q Phase Error

I/Q Gain Imbalance

Rx I/Q Output Load Impedance

(R || C)

Max RF gain - 32dB (B7:B6 = 11), AGC set for -30dBm

wanted signal

50kHz baseband output; 1 variation

50kHz baseband output; 1 variation

Minimum differential resistance

Maximum differential capacitance

I/Q Output DC Droop

After switching RXHP to 0; average over 1μs after any

gain change, or 2μs after receive enabled with 100Hz

interval AC-coupling, 1 variation

I/Q Static DC Offset

No RF input signal; measure at 3μs after receive

enable; RXHP = 1 for 0 to 2μs and set to 0 after 2μs,

1 variation

Loopback Gain

(for Receiver I/Q Calibration)

Transmitter I/Q input to receiver I/Q output; transmitter

B6:B1 = 000011, receiver B5:B1 = 10100 programmed -4.5

through SPI

RECEIVER BASEBAND FILTERS

At 15MHz

Baseband Filter Rejection

At 20MHz

At > 40MHz

RXHP = 1 (used before AGC completion)

Baseband Highpass Filter

Corner Frequency

RXHP = 0 (used after

AGC completion)

address A4:A0 = 01110

D5:D4 = 00

D5:D4 = 01

D5:D4 = 10

D5:D4 = 11

TYP

-37

-29

-21

-4

2.5

MAX UNITS

dBm

VP-P

-11

-8

dBm

-6

+16

0.15

Degrees

0.1

dB

10

k

5

pF

±1

mV/ms

±1

mV

0

+4.5

dB

57

75

dB

90

650

0.1

1

kHz

30

100

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