MAX2837 Просмотр технического описания (PDF) - Maxim Integrated

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производитель

MAX2837

2.3GHz to 2.7GHz Wireless Broadband RF Transceiver

Maxim Integrated 

MAX2837

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

In-Band Input P-1dB

Maximum Output Signal Level

Out-of-Band Input IP3 (Note 2)

I/Q Phase Error

I/Q Gain Imbalance

Rx I/Q Output Load Impedance

(R || C)

I/Q Output DC Droop

CONDITIONS

MIN

Max RF gain (B7:B6 = 00)

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

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

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

Over passband frequency range; at any gain setting; 1dB

compression point

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

wanted signal

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

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

wanted signal

50kHz baseband output; 1s variation

50kHz baseband output; 1s variation

Minimum differential resistance

Maximum differential capacitance

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

change, or 2µs after receive enabled with 100Hz interval AC-

coupling, 1s variation

TYP MAX UNITS

-37

-29

dBm

-21

-4

2.5

VP-P

-11

-8

dBm

-6

+16

0.15

Degrees

0.1

dB

10

kΩ

5

pF

±1

mV/ms

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,

1s variation

±1

mV

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 through SPI

-4.5

0

+4.5

dB

RECEIVER BASEBAND FILTERS

At 15MHz

57

Baseband Filter Rejection

At 20MHz

75

dB

At > 40MHz

90

RXHP = 1 (used before AGC completion)

650

Baseband Highpass Filter Corner

Frequency

D5:D4 = 00

RXHP = 0 (used after

AGC completion) address

D5:D4 = 01

A4:A0 = 01110

D5:D4 = 10

D5:D4 = 11

0.1

1

kHz

30

100

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