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参数资料
| 型号： | MAX2820ETM+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 16/26页 |
| 文件大小： | 0K |
| 描述： | IC TXRX 802.11B 2.4GHZ 48-TQFN |
| 标准包装： | 43 |
| 频率： | 2.4GHz ~ 2.5GHz |
| 数据传输率 - 最大： | 11Mbps |
| 调制或协议： | 802.11 b |
| 应用： | ISM |
| 功率 - 输出： | 3dBm |
| 灵敏度： | -97dBm |
| 电源电压： | 2.5 V ~ 5.5 V |
| 电流 - 接收： | 80mA |
| 电流 - 传输： | 70mA |
| 数据接口： | PCB，表面贴装 |
| 天线连接器： | PCB，表面贴装 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 48-WFQFN 裸露焊盘 |
| 包装： | 托盘 |
2.4GHz 802.11b Zero-IF Transceivers
Table 2. Programming Register Definition Summary (Address and Data)
4 ADDRESS BITS
12 DATA BITS
REGISTER
NAME
TEST
ENABLE
SYNTH
SYNTH
( “ A ” VERSION)
CHANNEL
RECEIVE
RECEIVE
( “ A ” VERSION)
TRANSMIT
A3
MSB
0
0
0
0
0
0
0
0
A2
15
0
0
0
0
0
1
1
1
A1
14
0
0
1
1
1
0
0
0
A0
13
0
1
0
0
1
0
0
1
D11
12
0
E11
X
X
X
2C2
2C2
X
D10
11
0
E10
X
X
X
2C1
2C1
X
D9
10
0
E9
X
X
X
2C0
2C0
X
D8
9
0
E8
X
X
X
1C2
1C2
X
D7
8
0
E7
X
X
X
1C1
1C1
X
D6
7
0
E6
ICP
X
CF6
1C0
1C0
X
D5
6
0
E5
R5
R5
CF5
DL1
0
X
D4
5
0
E4
R4
R4
CF4
DL0
1
X
D3
4
0
E3
R3
R3
CF3
SF
0
PA3
D2
3
1
E2
R2
R2
CF2
BW2
X
PA2
D1
2
1
E1
R1
R1
CF1
BW1
X
PA1
D0
LSB
1
E0
R0
R0
CF0
BW0
X
PA0
X = Don ’ t care.
Programmable Registers
The MAX2820/MAX2820A and MAX2821/MAX2821A
(the MAX2820 family) contain programmable registers
to control various modes of operation for the major cir-
cuit blocks. The registers can be programmed through
the 3-wire SPI/QSPI/MICROWIRE-compatible serial
port. The MAX2820 family includes five programmable
registers:
1) Test register (always program as in Table 2).
2) Block-enable register
3) Synthesizer register
4) Channel frequency register
5) Receiver settings register
6) Transmitter settings register
Each register consists of 16 bits. The four most signifi-
cant bits (MSBs) are the register ’ s address. The twelve
least significant bits (LSBs) are used for register data.
Table 2 summarizes the register configuration. A
detailed description of each register is provided in
Tables 3 – 6.
Data is shifted in the MSB first. The data sent to the
transceiver, in 16-bit words, is framed by CSB. When
CSB is low, the clock is active and data is shifted with
the rising edge of the clock. When CSB transitions to
high, the shift register is latched into the register select-
ed by the contents of the address bits. Only the last 16
bits shifted into the device are retained in the shift reg-
ister. No check is made on the number of clock pulses.
Figure 1 documents the serial interface timing for the
MAX2820 family.
Power-Up Default States
The devices provide power-up loading of default states
for each of the registers. The states are loaded on a
VCC_DIG supply voltage transition from 0V to V CC . The
default values are retained until reprogrammed through
the serial interface or the power supply voltage is taken
to 0V. The default state of each register is described in
Table 3. Note: Putting the IC in shutdown mode does
not change the contents of the programming registers.
Block-Enable Register
The block-enable register permits individual control of the
enable state for each major circuit block in the transceiver.
The actual enable condition of the circuit block is a logical
function of the block-enable bit setting and other control
input states. Table 4 documents the logical definition of
state for each major circuit block.
Synthesizer Register
The synthesizer register (SYNTH) controls the reference
frequency divider and charge-pump current of the PLL.
See Table 5 for a description of the bit settings.
Channel Frequency Register
The channel frequency register (CHANNEL) sets the
RF carrier frequency for the radio. The channel is pro-
grammed as a number from 0 to 99. The actual frequency
is 2400 + channel in MHz. The default setting is 37 for
2437MHz. See Table 6 for a description of the bit settings.
Receiver Settings Register
(MAX2820/MAX2821 Only)
The receive settings register (RECEIVE) controls the
receive filter -3dB corner frequency, RX level detector
midpoint, and VGA DC offset nulling parameters. The
defaults are intended to provide proper operation.
16
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX2820ETM+ | 功能描述:射频接收器 2.4GHz 802.11b Zero-If Transceiver RoHS:否 制造商:Skyworks Solutions, Inc. 类型:GPS Receiver 封装 / 箱体:QFN-24 工作频率:4.092 MHz 工作电源电压:3.3 V 封装:Reel |
| MAX2820ETM+D | 功能描述:射频接收器 RoHS:否 制造商:Skyworks Solutions, Inc. 类型:GPS Receiver 封装 / 箱体:QFN-24 工作频率:4.092 MHz 工作电源电压:3.3 V 封装:Reel |
| MAX2820ETM+T | 功能描述:射频接收器 2.4GHz 802.11b Zero-If Transceiver RoHS:否 制造商:Skyworks Solutions, Inc. 类型:GPS Receiver 封装 / 箱体:QFN-24 工作频率:4.092 MHz 工作电源电压:3.3 V 封装:Reel |
| MAX2820ETM+TD | 功能描述:射频接收器 RoHS:否 制造商:Skyworks Solutions, Inc. 类型:GPS Receiver 封装 / 箱体:QFN-24 工作频率:4.092 MHz 工作电源电压:3.3 V 封装:Reel |
| MAX2820ETM-D | 功能描述:射频接收器 RoHS:否 制造商:Skyworks Solutions, Inc. 类型:GPS Receiver 封装 / 箱体:QFN-24 工作频率:4.092 MHz 工作电源电压:3.3 V 封装:Reel |
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