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PDF MAX2830 Data sheet ( Hoja de datos )
| Número de pieza | MAX2830 | |
| Descripción | 2.4GHz to 2.5GHz 802.11g/b RF Transceiver | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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EVALUATION KIT AVAILABLE
AVAILABLE
MAX2830
2.4GHz to 2.5GHz 802.11g/b RF Transceiver, PA,
and Rx/Tx/Antenna Diversity Switch
General Description
The MAX2830 direct conversion, zero-IF, RF transceiver
is designed specifically for 2.4GHz to 2.5GHz 802.11g/b
WLAN applications. The MAX2830 completely integrates
all circuitry required to implement the RF transceiver
function, providing an RF power amplifier (PA), an Rx/Tx
and antenna diversity switch, RF-to-baseband receive
path, baseband-to-RF transmit path, voltage-controlled
oscillator (VCO), frequency synthesizer, crystal oscillator,
and baseband/control interface. The MAX2830 includes
a fast-settling sigma-delta RF synthesizer with smaller
than 20Hz frequency steps and a digitally tuned crystal
oscillator allowing use of a low-cost crystal. No I/Q cali-
bration is required; however, the device also integrates
on-chip DC-offset cancellation and I/Q errors and carrier
leakage-detection circuits for improved performance.
Only an RF bandpass filter (BPF), crystal, a pair of
baluns, and a small number of passive components are
needed to form a complete 802.11g/b WLAN RF front-
end solution.
The MAX2830 completely eliminates the need for an
external SAW filter by implementing on-chip monolithic fil-
ters for both the receiver and transmitter. The baseband
filters are optimized to meet the IEEE 802.11g standard
and proprietary turbo modes up to 40MHz channel band-
width. These devices are suitable for the full range of
802.11g OFDM data rates (6Mbps to 54Mbps) and
802.11b QPSK and CCK data rates (1Mbps to 11Mbps).
The ICs are available in a small, 48-pin TQFN package
measuring only 7mm x 7mm x 0.8mm.
FunctionAapl pDliiacgartaiomnss
Wi-Fi, PDA, VOIP, and Cellular Handsets
Wireless Speakers and Headphones
General 2.4GHz ISM Radios
Features
o 2.4GHz to 2.5GHz ISM Band Operation
o IEEE 802.11g/b Compatible (54Mbps OFDM and
11Mbps CCK)
o Complete RF Transceiver, PA, Rx/Tx and Antenna
Diversity Switch, and Crystal Oscillator
Best-in-Class Transceiver Performance
62mA Receiver Current
3.3dB Rx Noise Figure
-75dBm Rx Sensitivity (54Mbps OFDM)
No I/Q Calibration Required
0.1dB/0.35° Rx I/Q Gain/Phase Imbalance
33dB RF and 62dB Baseband Gain Control
Range
60dB Range Analog RSSI per RF Gain Setting
Fast Rx I/Q DC-Offset Settling
Programmable Baseband Lowpass Filter
20-Bit Sigma-Delta Fractional-N PLL with
< 20Hz Step Size
Digitally Tuned Crystal Oscillator
+17.1dBm Transmit Power (5.6% EVM with
54Mbps OFDM)
31dB Tx Gain Control Range
Integrated Power Detector
Fully Integrated RF Input and Output
Matching and DC Blocking
Serial or Parallel Gain-Control Interface
> 40dB Tx Sideband Suppression Without
Calibration
Rx/Tx I/Q Error Detection
o Transceiver Operates from +2.7V to +3.6V
o PA Operates from +2.7V to +4.2V
o Low-Power Shutdown Mode
o Small 48-Pin TQFN Package
(7mm x 7mm x 0.8mm)
PART
MAX2830
MAX2831
MAX2832
Selector Guide
INTEGRATED PA
Yes
Yes
No
INTEGRATED SWITCH
Yes
No
No
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX2830ETM+T -40°C to +85°C 48 TQFN-EP*
*EP = Exposed paddle.
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
Pin Configurations appear at end of data sheet.
Functional Diagrams continued at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
Pin Configuration appears at end of data sheet.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-0774; Rev 2; 3/11
1 page  
MAX2830
2.4GHz to 2.5GHz 802.11g/b RF Transceiver, PA,
and Rx/Tx/Antenna Diversity Switch
AC ELECTRICAL CHARACTERISTICS—Rx Mode (continued)
(MAX2830 EV kit, VCC_ = 2.8V, VCCPA = VCCTXPA = 3.3V, TA =+25°C, fRF = 2.439GHz, fLO = 2.437GHz; receiver baseband I/Q out-
puts at 112 mVRMS (-19dBV), fREF = 40MHz, SHDN = CS = high, RXTX = 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, unless otherwise noted.
Unmodulated single-tone RF input signal is used with specifications that normally apply over the entire operating conditions, unless
otherwise indicated. RF inputs/outputs specifications are referenced to device pins and do not include 1dB loss from EV kit PCB,
balun, and SMA connectors.) (Note 1)
PARAMETER
I/Q Output DC Droop
I/Q Static DC Offset
Spurious Signal Emissions from
LNA input
CONDITIONS
After switching RXHP to 0, D13:D12, Register 7
(A3:A0 = 0111)
RXHP = 1, B7:B1 = 1101110, 1 σ variation
RF = 1GHz to 26.5GHz
MIN TYP MAX UNITS
±1 V/s
±1 mV
-51 dBm
ANT to Receiver Isolation
ANT1 to receiver (in ANT2 mode)
ANT2 to receiver (in ANT1 mode)
20
dB
47
RECEIVER BASEBAND FILTERS
Gain Ripple in Passband
10kHz to 8.5MHz at baseband
Group-Delay Ripple in Passband 10kHz to 8.5MHz at baseband
At 8.5MHz
Baseband Filter Rejection
(Nominal Mode)
At 15MHz
At 20MHz
At > 40MHz
RSSI
RSSI Minimum Output Voltage
RSSI Maximum Output Voltage
RSSI Slope
RLOAD ≥ 10kΩ || 5pF
RLOAD ≥ 10kΩ || 5pF
RSSI Output Settling Time
To within 3dB of steady
state
+32dB signal step
-32dB signal step
±1.3
±45
3.2
27
50
80
0.4
2.4
30
200
600
dBP-P
nsP-P
dB
V
V
mV/dB
ns
Maxim Integrated
5
5 Page 
MAX2830
2.4GHz to 2.5GHz 802.11g/b RF Transceiver, PA,
and Rx/Tx/Antenna Diversity Switch
Typical Operating Characteristics
(MAX2830 EV kit, VCC_ = 2.8V, VCCPA = VCCTXPA = 3.3V, TA = +25°C, fLO = 2.437GHz, fREF = 40MHz, SHDN = CS = high, RXHP =
SCLK = DIN = low.)
Rx ICC vs. VCC
67
66
TA = +85°C
65
64
63 TA = +25°C
62 TA = -40°C
61
2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6
VCC (V)
NOISE FIGURE
vs. BASEBAND GAIN SETTINGS
45
40 LNA = LOW GAIN
35
30
25 LNA = MEDIUM GAIN
20
15
10 LNA = HIGH GAIN
5
0
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32
GAIN SETTINGS
Rx VOLTAGE GAIN
vs. BASEBAND GAIN SETTING
100
90 LNA = HIGH GAIN
80
70
60
50
40
30 LNA = MEDIUM GAIN
20
10 LNA = LOW GAIN
0
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32
GAIN SETTINGS
Rx IN-BAND OUTPUT P - 1dB vs. GAIN
0
-1
-2 LNA MEDIUM/HIGH-
GAIN SWITCH POINT
-3
LNA MEDIUM/LOW-
-4 GAIN SWITCH POINT
-5
-6
-7
15 25 35 45 55 65 75 85 95
GAIN (dB)
OFDM EVM WITH OFDM JAMMER
vs. OFFSET FREQUENCY
15
14 PIN = -62dBm
13 fOFFSET = 20MHz
12
11
10
9 fOFFSET = 25MHz
8
7
6
5
4
3
2
1 fOFFSET = 40MHz
0
-65 -55 -45 -35
-25
PJAMMER (dBm)
Maxim Integrated
Rx EVM vs. PIN
22
20 LNA = HIGH GAIN
LNA = LOW GAIN
18 LNA = MEDIUM GAIN
16
14
12
10
8
6
4
2
0
-80 -70 -60 -50 -40 -30 -20 -10 0
PIN (dBm)
Rx EMISSION SPECTRUM, LNA INPUT
-50 MAX2830 toc08
-60
-70
-80
-90
-100
-110
-120
-130
-140
-150
DC
26.5GHz
Rx EVM vs. VOUT
3.0
PIN = -50dBm
2.5 LNA = HIGH GAIN
2.0
1.5
1.0
0.5
0
-29 -27 -25 -23 -21 -19 -17 -15 -13 -11 -9
VOUT (dBVRMS)
LNA INPUT RETURN LOSS
vs. RF FREQUENCY (ANT 1)
-5
-10
HIGH GAIN
-15
-20
-25
2300
MID GAIN
LOW GAIN
2400 2500
RF FREQUENCY (MHz)
2600
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MAX2830.PDF ] | |
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