参数资料
型号: MAX2837ETM+T
厂商: Maxim Integrated
文件页数: 16/18页
文件大小: 0K
描述: IC TXRX 2.3GHZ-2.7GHZ 48TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
频率: 2.3GHz ~ 2.7GHz
调制或协议: 802.16,802.11b/g
应用: WLAN
功率 - 输出: 0dBm
电源电压: 2.7 V ~ 3.6 V
电流 - 接收: 91mA
电流 - 传输: 145mA
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: 带卷 (TR)
2.3GHz to 2.7GHz Wireless
Broadband RF Transceiver
DOUT
DON'T CARE
DIN
BIT 1
BIT 2
BIT 5
BIT 6
BIT 13
BIT 14
SCLK
t DS
t CL
t CH
t CS1
CS
t CSO
t CSS
t DH
t CSH
t CSW
SPI REGISTER WRITE
DOUT
DON'T CARE
BIT 6
BIT 13
BIT 14
t D
DIN
BIT 1
BIT 2
BIT 5
DON'T CARE
SCLK
CS
SPI REGISTER READ
Figure 1. 4-Wire SPI Serial-Interface Timing Diagram
delay using the on-chip PA bias DAC. The slow-charg-
ing Rx circuits are in a precharged “idle-off” state for
fast Tx-to-Rx turnaround time.
Clock-Out Only
In clock-out mode, the entire transceiver is off except the
divided reference clock output on the CLKOUT pin and
the clock divider, which remains on.
Programmable Registers
and 4-Wire SPI Interface
The MAX2837 includes 32 programmable 16-bit regis-
ters. The most significant bit (MSB) is the read/write
selection bit. The next 5 bits are register address. The
10 least significant bits (LSBs) are register data.
Register data is loaded through the 4-wire
SPI/MICROWIRE?-compatible serial interface. Data at
DIN is shifted in MSB first and is framed by CS . When
CS is low, the clock is active, and input data is shifted
at the rising edge of the clock. During the read mode,
register data selected by address bits is shifted out to
DOUT at the falling edges of the clock. At the CS rising
edge, the 10-bit data bits are latched into the register
selected by address bits. See Figure 1. The register
values are preserved in shutdown mode as long as the
power-supply voltage is maintained. However, every
time the power-supply voltage is turned on, the regis-
ters are reset to the default values. Note that default
register states are not guaranteed, and the user should
always reprogram all registers after power-up.
MICROWIRE is a trademark of National Semiconductor Corp.
16
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