
2.4GHz to 2.5GHz 802.11g/b
RF Transceivers with Integrated PA
AC ELECTRICAL CHARACTERISTICS—Miscellaneous Blocks
(MAX2831 EV kit: V CC_ = 2.8V, V CCPA = V CCTXPA = 3.3V, f LO = 2.437GHZ, f REF = 40MHz, SHDN = CS = high, SCLK = DIN = low,
and T A = +25°C, unless otherwise noted.) (Note 1)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
CRYSTAL OSCILLATOR
On-Chip Tuning Capacitance
Range
On-Chip Tuning Capacitance
Step Size
Maximum capacitance, A3:A0 = 1110, D6:D0 = 1111111
Minimum capacitance, A3:A0 = 1110, D6:D0 = 0000000
15.4
0.5
0.12
pF
pF
ON-CHIP TEMPERATURE SENSOR
T A = -40°C
0.35
Output Voltage
A3:A0 = 1000, D9:D8 = 01
T A = +25°C
1
V
T A = +85°C
1.6
AC ELECTRICAL CHARACTERISTICS—Timing
(MAX2831 EV kit: V CC_ = 2.8V, V CCPA = V CCTXPA = 3.3V, T A =+25°C, f LO = 2.437GHz, f REF = 40MHz, SHDN = CS = high, SCLK =
DIN = low, PLL loop bandwidth = 150kHz, and T A = +25°C, unless otherwise noted.) (Note 1)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
SYSTEM TIMING (See Figure 3)
Turn-On Time
Crystal Oscillator Turn-On Time
Channel Switching Time
Rx/Tx Turnaround Time
Tx Turn-On Time (from Standby
Mode)
Tx Turn-Off Time (from Standby
Mode)
Rx Turn-On Time (from Standby
Mode)
Rx Turn-Off Time (from Standby
Mode)
From SHDN rising edge to LO settled within 1kHz using
external reference frequency input
90% of final output amplitude level
Loop BW = 150kHz, f RF = 2.5GHz to 2.4GHz
Measured from Tx or Rx
Rx to Tx
enable rising edge; signal
settling to within ±2dB of
Tx to Rx, RXHP = 1
steady state
From Tx-enable active rising edge; signal settling to
within ±2dB of steady state
From Tx-enable inactive rising edge
From Rx-enable active rising edge; signal settling to
within ±2dB of steady state
From Rx-enable inactive rising edge
60
1
25
2
2
1.5
1
1.9
0.1
μs
ms
μs
μs
μs
μs
μs
μs
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