19-3455; Rev 0; 10/04
KIT
ATION
EVALU
E
BL
AVAILA
Single-/Dual-Band 802.11a/b/g
World-Band Transceiver ICs
General Description
Features
o
World-Band Operation
MAX2828: 4.9GHz to 5.875GHz (802.11a)
MAX2829: 2.4GHz to 2.5GHz and 4.9GHz to
5.875GHz (802.11a/b/g)
o
Best-In-Class Transceiver Performance
-75dBm Rx Sensitivity at 54Mbps (802.11g)
-46dB (802.11g)/-51dB (802.11a) Tx Sideband
Suppression
1.5% (802.11g) and 2% (802.11a) Tx EVM
-100dBc/Hz (802.11g)/-95dBc/Hz (802.11a)
LO Phase Noise
Programmable Baseband Lowpass Filters
Integrated PLL with 3-Wire Serial Interface
93dB (802.11g)/97dB (802.11a) Receiver Gain-
Control Range
200ns Rx I/Q DC Settling
60dB Dynamic Range Rx RSSI
30dB Tx Power-Control Range
Tx/Rx I/Q Error Detection
I/Q Analog Baseband Interface for Tx and Rx
Digital Mode Selection (Tx, Rx, Standby, and
Power Down)
Supports Both Serial and Parallel Gain Control
o
MIMO and Smart Antenna Compatibility
Coherent LO Phase Among Multiple
Transceivers
o
Support 40MHz Channel Bandwidth (Turbo Mode)
o
Single +2.7V to +3.6V Supply
o
1µA Low-Power Shutdown Mode
o
Small 56-Pin TQFN Package (8mm x 8mm)
MAX2828/MAX2829
The MAX2828/MAX2829 single-chip, RF transceiver ICs
are designed specifically for OFDM 802.11 WLAN appli-
cations. The MAX2828 is designed for single-band
802.11a applications covering world-band frequencies
of 4.9GHz to 5.875GHz. The MAX2829 is designed for
dual-band 802.11a/g applications covering world-bands
of 2.4GHz to 2.5GHz and 4.9GHz to 5.875GHz. The ICs
include all circuitry required to implement the RF trans-
ceiver function, providing a fully integrated receive path,
transmit path, VCO, frequency synthesizer, and base-
band/control interface. Only the PA, RF switches, RF
bandpass filters (BPF), RF baluns, and a small number
of passive components are needed to form the com-
plete RF front-end solution.
Each IC completely eliminates the need for external SAW
filters by implementing on-chip monolithic filters for both
the receiver and transmitter. The baseband filtering and
the Rx/Tx signal paths are optimized to meet the
802.11a/g IEEE standards and cover the full range of the
required data rates (6, 9, 12, 18, 24, 36, 48, and 54Mbps
for OFDM; 1, 2, 5.5, and 11Mbps for CCK/DSSS), at
receiver sensitivity levels up to 10dB better than 802.11a/g
standards. The MAX2828/MAX2829 transceivers are avail-
able in the small 56-pin, exposed paddle thin QFN pack-
age.
Applications
Single-/Dual-Band 802.11a/b/g Radios
4.9GHz Public Safety Radios
2.4GHz/5GHz MIMO and Smart Antenna Systems
Pin Configurations
RXBBQ+
RXBBQ-
RXBBI+
RXBBI-
GND
V
CC
V
CC
V
CC
V
CC
B5
B4
B3
B2
B1
Ordering Information
PART
MAX2828
ETN
TEMP RANGE
-40°C to +85°C
PIN-PACKAGE
56 TQFN-EP* (T5688-2)
56 TQFN-EP* (T5688-2)
TOP VIEW
56 55 54 53 52 51 50 49 48 47 46 45 44 43
B6
V
CC
B7
N.C.
GND
RXRFH
GND
TXRFH+
TXRFH-
V
CC
N.C.
N.C.
TXENA
PABIAS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15 16 17 18 19 20 21 22 23 24 25 26 27 28
TXBBI+
TXBBI-
TXBBQ+
TXBBQ-
R
BIAS
SCLK
V
REF
GND
V
CC
V
CC
V
CC
V
CC
DIN
CS
42 RXHP
41 RXENA
40 RSSI
39 SHDN
38 V
CC
37 BYPASS
36 TUNE
MAX2829
ETN
-40°C to +85°C
*EP =
Exposed paddle.
MAX2828
35 GND
34 GND
33 CPOUT
32 GND
31 V
CC
30 ROSC
29 LD
Pin Configurations continued at end of data sheet.
1
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Single-/Dual-Band 802.11a/b/g
World-Band Transceiver ICs
MAX2828/MAX2829
ABSOLUTE MAXIMUM RATINGS
V
CC
, TXRFH_, TXRFL_ to GND..............................-0.3V to +4.2V
RXRFH, RXRFL, TXBBI_, TXBBQ_, ROSC, RXBBI_, RXBBQ_,
RSSI, PABIAS, V
REF
, CPOUT, RXENA, TXENA,
SHDN, CS,
SCLK, DIN, B_, RXHP, LD, R
BIAS
,
BYPASS to GND ....................................-0.3V to (V
CC
+ 0.3V)
RXBBI_, RXBBQ_, RSSI, PABIAS, V
REF
, CPOUT,
LD Short-Circuit Duration...................................................10s
CAUTION!
ESD SENSITIVE DEVICE
RF Input Power ...............................................................+10dBm
Continuous Power Dissipation (T
A
= +70°C)
56-Pin Thin QFN (derate 31.3mW/°C above +70°C)....2500mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
DC ELECTRICAL CHARACTERISTICS
(MAX2828/MAX2829 evaluation kits: V
CC
= 2.7V to 3.6V, Rx/Tx set to maximum gain, R
BIAS
= 11kΩ, no signal at RF inputs, all RF
inputs and outputs terminated into 50Ω, receiver baseband outputs are open, no signal applied to Tx I/Q BB inputs in Tx mode,
f
REFOSC
= 40MHz, registers set to default settings and corresponding test mode, T
A
= -40°C to +85°C, unless otherwise noted.
Typical values are at V
CC
= +2.7V and T
A
= +25°C, unless otherwise noted.) (Note 1)
PARAMETERS
Supply Voltage
CONDITIONS
Shutdown mode, reference oscillator not applied, V
IL
= 0
T
A
= +25°C
802.11g MAX2829
T
A
= -40°C to +85°C
Standby
mode
T
A
= +25°C
802.11a
MAX2828/MAX2829
802.11g MAX2829
Rx mode
802.11a
MAX2828/MAX2829
802.11g MAX2829
Tx mode
802.11a
MAX2828/MAX2829
Supply Current
Standby
mode
(MIMO)
(Note 2)
Rx mode
(MIMO)
(Note 2)
Tx mode
(MIMO)
(Note 2)
802.11g MAX2829
802.11a
MAX2828/MAX2829
802.11g MAX2829
802.11a
MAX2828/MAX2829
802.11g MAX2829
802.11a
MAX2828/MAX2829
T
A
= -40°C to +85°C
T
A
= +25°C
T
A
= -40°C to +85°C
T
A
= +25°C
T
A
= -40°C to +85°C
T
A
= +25°C
T
A
= -40°C to +85°C
T
A
= +25°C
T
A
= -40°C to +85°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
65
70
136
154
139
157
129
147
188
210
0.80
0.9
1.05
V
142
124
135
118
MIN
2.7
TYP
1
37
44
MAX
3.6
100
47
51
51
55
151
158
180
188
164
175
184
197
mA
UNITS
V
µA
Tx calibration mode,
T
A
= +25°C
RX calibration mode,
T
A
= +25°C
Rx I/Q Output Common-Mode
Voltage
T
A
= +25°C
802.11g MAX2829
802.11a MAX2828/MAX2829
802.11g MAX2829
802.11a MAX2828/MAX2829
2
_______________________________________________________________________________________
Single-/Dual-Band 802.11a/b/g
World-Band Transceiver ICs
DC ELECTRICAL CHARACTERISTICS (continued)
(MAX2828/MAX2829 evaluation kits: V
CC
= 2.7V to 3.6V, Rx/Tx set to maximum gain, R
BIAS
= 11kΩ, no signal at RF inputs, all RF
inputs and outputs terminated into 50Ω, receiver baseband outputs are open, no signal applied to Tx I/Q BB inputs in Tx mode,
f
REFOSC
= 40MHz, registers set to default settings and corresponding test mode, T
A
= -40°C to +85°C, unless otherwise noted.
Typical values are at V
CC
= +2.7V and T
A
= +25°C, unless otherwise noted.) (Note 1)
PARAMETERS
Rx I/Q Output Common-Mode
Voltage Variation
Tx Baseband Input Common-
Mode Voltage Operating Range
Tx Baseband Input Bias Current
Reference Voltage Output
Digital Input-Voltage High, V
IH
Digital Input-Voltage Low, V
IL
Digital Input-Current High, I
IH
Digital Input-Current Low, I
IL
LD Output-Voltage High, V
OH
LD Output-Voltage Low, V
OL
Sourcing 100µA
Sinking 100µA
-1
-1
V
CC
-
0.4
0.4
-1mA < I
OUT
< +1mA
V
CC
-
0.4
0.4
+1
+1
1.2
CONDITIONS
T
A
= -40°C (relative to +25°C)
T
A
= +85°C (relative to +25°C)
0.9
MIN
TYP
-25
20
1.3
13
MAX
UNITS
mV
V
µA
V
V
V
µA
µA
V
V
MAX2828/MAX2829
AC ELECTRICAL CHARACTERISTICS—802.11g Rx Mode (MAX2829)
(MAX2829 evaluation kit: V
CC
= +2.7V, f
IN
= 2.437GHz; receiver baseband I/Q outputs at 112mV
RMS
(-19dBV), f
REFOSC
= 40MHz,
SHDN
= RXENA =
CS
= high, RXHP = TXENA = SCLK = DIN = low, R
BIAS
= 11kΩ, registers set to default settings and correspond-
ing test mode, T
A
= +25°C, unless otherwise noted. Unmodulated single-tone RF input signal is used, unless otherwise indicated.)
(Tables 1, 2, 3)
PARAMETER
RF Input Frequency Range
LNA high-gain mode (B7:B6 = 11)
RF Input Return Loss
With 50Ω external
match
LNA medium-gain mode
(B7:B6 = 10)
LNA low-gain mode (B7:B6 = 0X)
Maximum gain,
B7:B1 = 1111111
Total Voltage Gain
Minimum gain,
B7:B1 = 0000000
T
A
= +25°C
T
A
= -40°C to +85°C (Note 1)
T
A
= +25°C
87
85
1
-15.5
dB
From high-gain mode (B7:B6 = 11) to low-gain mode
(B7:B6 = 0X) (Note 3)
Gain Variation Over RF Band
Baseband Gain Range
f
RF
= 2.412GHz to 2.5GHz
From maximum baseband gain (B5:B1 = 11111) to
minimum baseband gain (B5:B1 = 00000)
62
-30.5
3
dB
dB
5.5
CONDITIONS
MIN
2.412
-22
-24
-12
94
dB
dB
TYP
MAX
2.500
UNITS
GHz
RECEIVER SECTION: LNA RF INPUT TO BASEBAND I/Q OUTPUTS
From high-gain mode (B7:B6 = 11) to medium-gain
mode (B7:B6 = 10) (Note 3)
RF Gain Steps
_______________________________________________________________________________________
3
Single-/Dual-Band 802.11a/b/g
World-Band Transceiver ICs
MAX2828/MAX2829
AC ELECTRICAL CHARACTERISTICS—802.11g Rx Mode (MAX2829) (continued)
(MAX2829 evaluation kit: V
CC
= +2.7V, f
IN
= 2.437GHz; receiver baseband I/Q outputs at 112mV
RMS
(-19dBV), f
REFOSC
= 40MHz,
SHDN
= RXENA =
CS
= high, RXHP = TXENA = SCLK = DIN = low, R
BIAS
= 11kΩ, registers set to default settings and correspond-
ing test mode, T
A
= +25°C, unless otherwise noted. Unmodulated single-tone RF input signal is used, unless otherwise indicated.)
(Tables 1, 2, 3)
PARAMETER
CONDITIONS
Voltage gain
≥
65dB, with B7:B6 = 11
DSB Noise Figure
Voltage gain = 50dB, with B7:B6 = 11
Voltage gain = 45dB, with B7:B6 = 10
Voltage gain = 15dB, with B7:B6 = 0X
Output P-1
dB
Voltage gain = 90dB, with B7:B6 = 11
Voltage gain = 60dB,
with B7:B6 = 11
Voltage gain = 45dB,
with B7:B6 = 10
Voltage gain = 40dB,
with B7:B6 = 0X
MIN
TYP
3.5
4
16
36
3.2
-10
-2
21
-29
-14
2
-17
-5
14
±0.5
±0.1
-4
±2
±1
degrees
dB
dB
mV
mV/ms
dBm
dBm
dBm
V
P-P
dB
MAX
UNITS
Out-of-Band Input IP3
-35dBm jammers at
40MHz and 78MHz
offset; based on IM3
at 2MHz
Voltage gain = 40dB, with B7:B6 = 11
In-Band Input P-1
dB
Voltage gain = 25dB, with B7:B6 = 10
Voltage gain = 5dB, with B7:B6 = 0X
Voltage gain = 40dB,
with B7:B6 = 11
Voltage gain = 25dB,
with B7:B6 = 10
Voltage gain = 5dB,
with B7:B6 = 0X
In-Band Input IP3
Tones at 7MHz and
8MHz, IM3 at 6MHz
and 9MHz, P
IN
=
-40dBm per tone
I/Q Phase Error
I/Q Gain Imbalance
Tx-to-Rx Conversion Gain for Rx
I/Q Calibration
I/Q Static DC Offset
I/Q DC Droop
B7:B1 = 1101110, 1σ variation
B7:B1 = 1101110, 1σ variation
B7:B1 = 0010101 (Note 4)
RXHP = 1, B7:B1 = 1101110, 1σ variation
After switching RXHP to 0, D2 = 0 (see the
RX
Control/RSSI Register Definition
section)
Gain change from high gain to medium gain, high gain to
low gain, or medium gain to low gain; gain settling to
within
±2dB
of steady state
Gain change from B5:B1 = 10111 to B5:B1 = 00111;
gain settling to within
±2dB
of steady state
Minimum differential resistance
Maximum differential capacitance
RF Gain-Change Settling Time
0.4
µs
Baseband VGA Settling Time
Rx I/Q Output Load Impedance
0.1
10
8
-67
µs
kΩ
pF
dBm
Spurious Signal Emissions at LNA
RF = 1GHz to 26.5GHz
Input
4
_______________________________________________________________________________________
Single-/Dual-Band 802.11a/b/g
World-Band Transceiver ICs
AC ELECTRICAL CHARACTERISTICS—802.11g Rx Mode (MAX2829) (continued)
(MAX2829 evaluation kit: V
CC
= +2.7V, f
IN
= 2.437GHz; receiver baseband I/Q outputs at 112mV
RMS
(-19dBV), f
REFOSC
= 40MHz,
SHDN
= RXENA =
CS
= high, RXHP = TXENA = SCLK = DIN = low, R
BIAS
= 11kΩ, registers set to default settings and correspond-
ing test mode, T
A
= +25°C, unless otherwise noted. Unmodulated single-tone RF input signal is used, unless otherwise indicated.)
(Tables 1, 2, 3)
PARAMETER
RECEIVER BASEBAND FILTERS
Narrowband mode
Baseband -3dB Corner
Frequency
(See the
Lowpass
Filter Register
section)
f
BASEBAND
= 15MHz
f
BASEBAND
= 20MHz
f
BASEBAND
> 40MHz
RSSI
RXHP = 1, low range (D11 = 0, see the
Rx Control/RSSI
Register Definition
section)
RSSI Minimum Output Voltage
RXHP = 1, high range (D11 = 1, see the
Rx Control/RSSI
Register Definition
section)
RXHP = 1, low range (D11 = 0, see the
Rx Control/RSSI
Register Definition
section)
RSSI Maximum Output Voltage
RXHP = 1, high range (D11 = 1, see the
Rx Control/RSSI
Register Definition
section)
RXHP = 1, low range (D11 = 0, see the
Rx Control/RSSI
Register Definition
section)
RSSI Slope
RXHP = 1, high range (D11 = 1, see the
Rx Control/RSSI
Register Definition
section)
RSSI Output Settling Time
To within 3dB of steady
state
+40dB signal step
-40dB signal step
30
0.2
0.7
µs
2.5
22.5
mV/dB
0.52
2
V
0.5
V
Nominal mode
Turbo mode 1
Turbo mode 2
Baseband Filter Rejection
(Nominal Mode)
7.5
9.5
14
18
20
39
84
dB
MHz
CONDITIONS
MIN
TYP
MAX
UNITS
MAX2828/MAX2829
_______________________________________________________________________________________
5
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