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2.3GHz to 2.7GHz MIMO Wireless
BroadbandRF Transceiver
AC ELECTRICAL CHARACTERISTICS—TIMING (continued)
(MAX2839AS Evaluation Kit. Unless otherwise noted, V CC_ = 2.8V, f LO = 2.5GHz, f REF = 40MHz, CS = high, SCLK = DIN = low, PLL
closed-loop unity gain bandwidth = 120kHz, and T A = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
4-WIRE SERIAL PARALLEL INTERFACE TIMING (see Figure 1)
SCLK Rising Edge to CS Falling
Edge Wait Time
Falling Edge of CS to Rising
Edge of First SCLK Time
DIN to SCLK Setup Time
DIN to SCLK Hold Time
SCLK Pulse-Width High
SCLK Pulse-Width Low
t CSO
t CSS
t DS
t DH
t CH
t CL
6
6
6
6
6
6
ns
ns
ns
ns
ns
ns
Last Rising Edge of SCLK to
Rising Edge of CS or Clock to
t CSH
6
ns
Load Enable Setup Time
CS High Pulse Width
t CSW
20
ns
Time Between Rising Edge of CS
and the Next Rising Edge of
t CS1
6
ns
SCLK
Clock Frequency
Rise Time
Fall Time
SCLK Falling Edge to Valid DOUT
f CLK
t R
t F
t D
40
0.1/f CLK
0.1/f CLK
12.5
MHz
ns
ns
ns
Note 2: Min/max limits are production tested at T A = +85°C. Min/max limits at T A = -40°C and T A = +25°C are guaranteed by
design and characterization. The power-on default register settings are not production tested. Load register setting 10μs
after V CC is applied.
Note 3: Tx mode supply current is specified for 64 QAM while achieving the Tx output spectrum mask shown in the Typical Operating
Characteristics. The supply current can be reduced for 16 QAM signal by adjusting the Tx bias settings through the SPI.
Note 4: Two tones at +20MHz and +39MHz offset with -35dBm/tone. Measure IM3 at 1MHz.
Note 5: Gain adjusted over max gain and max gain -3dB.
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