MAX2828 MAXIM [Maxim Integrated Products], MAX2828 Datasheet - Page 38

• Manufacturer Part Number: MAX2828
• Description: Single-/Dual-Band 802.11a/b/g World-Band Transceiver ICs
• Manufacturer: MAXIM [Maxim Integrated Products]

Single-/Dual-Band 802.11a/b/g
World-Band Transceiver ICs
The receiver gain can be set either by the digital input
pins B1 through B7 or by the internal Rx gain register.
The gain-control characteristic is shown in the Typical
Operating Characteristics.
The RSSI output can be configured for two output
voltage ranges: 0.5V to 2V and 0.5V to 2.5V (see
Table 16a). The RSSI output is unaffected by the Rx
VGA gain setting. They are capable of driving loads
up to 10kΩ || 5pF.
38
TOP VIEW
TXRFH+
TXRFH-
TXRFL+
TXRFL-
PABIAS
RXRFH
RXRFL
TXENA
GND
GND
V
V
______________________________________________________________________________________
B6
CC
B7
CC
Pin Configurations (continued)
10
11
12
13
14
1
2
3
4
5
6
7
8
9
15 16 17 18 19 20
56
55 54 53 52 51 50 49 48 47 46 45 44 43
MAX2829
21 22 23 24 25 26 27 28
Rx Gain Control
42
41
40
39
38
37
36
35
34
33
32
31
30
29
RSSI
RXHP
RXENA
RSSI
SHDN
V
BYPASS
TUNE
GND
GND
CPOUT
GND
V
ROSC
LD
CC
CC
The Tx gain can be set either by digital input pins B1
through B6 or by the internal Tx VGA gain register. The
linearity of the Tx blocks can also be adjusted (Table 17).
The Tx VGA gain-control characteristic is shown in the
Typical Operating Characteristics.
The loop-filter topology and component values can be
found in the MAX2828/MAX2829 evaluation kit data
sheet. A 150kHz loop bandwidth is recommended to
ensure that the loop settles fast enough during Tx/Rx
turnaround times.
TRANSISTOR COUNT: 42,998
PROCESS: BiCMOS
Chip Information
Tx VGA Gain Control
Loop Filter