MAX2837(2008) データシートの表示（PDF） - Maxim Integrated
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MAX2837 Datasheet PDF : 18 Pages
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2.3GHz to 2.7GHz Wireless
Broadband RF Transceiver
AC ELECTRICAL CHARACTERISTICS—TIMING (continued)
(MAX2837 evaluation kit: VCC_ = 2.8V, fLO = 2.5GHz, fREF = 40MHz, ENABLE = CS = high, SCLK = DIN = low, PLL loop bandwidth =
120kHz, TA = +25°C, unless otherwise noted.) (Note 1)
PARAMETER
Tx Turn-Off Time
(to Standby Mode)
SYMBOL
CONDITIONS
From Tx enable falling edge
MIN TYP MAX UNITS
0.1
µs
Rx Turn-On Time
(from Standby Mode)
Measured from Rx enable rising edge;
signal settling to within 0.5dB of steady
state
2
µs
Rx Turn-Off Time
(to Standby Mode)
From Rx enable falling edge
0.1
µs
4-WIRE SERIAL-INTERFACE TIMING (See Figure 1)
SCLK Rising Edge to CS Falling
Edge Wait Time
tCSO
6
ns
Falling Edge of CS to Rising
Edge of First SCLK Time
tCSS
6
ns
DIN to SCLK Setup Time
tDS
DIN to SCLK Hold Time
tDH
SCLK Pulse-Width High
tCH
SCLK Pulse-Width Low
tCL
6
ns
6
ns
6
ns
6
ns
Last Rising Edge of SCLK to
Rising Edge of CS or Clock to
Load Enable Setup Time
tCSH
6
ns
CS High Pulse Width
tCSW
20
ns
Time Between Rising Edge
of CS and the Next Rising Edge
tCS1
of SCLK
6
ns
Clock Frequency
Rise Time
Fall Time
SCLK Falling Edge to Valid
DOUT
fCLK
tR
tF
tD
45
fCLK / 10
fCLK / 10
12.5
MHz
ns
ns
ns
Note 1: Min and max limits guaranteed by test above TA = +25°C and guaranteed by design and characterization at TA = -40°C.
The power-on register settings are not production tested. Recommended register setting must be loaded after VCC is supplied.
Note 2: Two tones at +25MHz and +39MHz offset with -35dBm/tone. Measure IM3 at 1MHz.
Note 3: Gain adjusted over max gain and max gain - 3dB. Optimally matched over given 200MHz band.
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