Datasheet

2.4GHz to 2.5GHz 802.11g/b RF Transceiver, PA,
and Rx/Tx/Antenna Diversity Switch
AC ELECTRICAL CHARACTERISTICS—Miscellaneous Blocks
(MAX2830 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
M axi m um cap aci tance, A3:A0 = 1110, D 6:D 0 = 1111111 15.4
On-Chip Tuning Capacitance
Range
M i ni m um cap aci tance, A3:A0 = 1110, D 6:D 0 = 0000000 0.5
pF
On-Chip Tuning Capacitance
Step Size
0.12 pF
ON-CHIP TEMPERATURE SENSOR
T
A
= -40°C 0.35
T
A
= +25°C 1Output Voltage A3:A0 = 1000, D 9:D 8 = 01
T
A
= +85°C 1.6
V
AC ELECTRICAL CHARACTERISTICS—Timing
(MAX2830 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
From SHDN rising edge to LO settled within 1kHz using
external reference frequency input
60 µs
Crystal Oscillator Turn-On Time 90% of final output amplitude level 1 ms
Channel Switching Time Loop BW = 150kHz, f
RF
= 2.5GHz to 2.4GHz 25 µs
Rx to Tx 2
Rx/Tx Turnaround Time
Measured from Tx or Rx
enable rising edge; signal
settling to within ±2dB of
steady state
Tx to Rx, RXHP = 1 2
µs
Tx Turn-On Time (from Standby
Mode)
From Tx-enable active rising edge; signal settling to
within ±2dB of steady state
1.5 µs
Tx Turn-Off Time (from Standby
Mode)
From Tx-enable inactive rising edge 1 µs
Rx Turn-On Time (from Standby
Mode)
From Rx-enable active rising edge; signal settling to
within ±2dB of steady state
1.9 µs
Rx Turn-Off Time (from Standby
Mode)
From Rx-enable inactive rising edge 0.1 µs
Maxim Integrated
9
MAX2830