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参数资料
| 型号： | MAX2510EEI+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 10/12页 |
| 文件大小： | 0K |
| 描述： | IC TXRX IF W/RSSI&MODLTR 28-QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 频率： | 100MHz ~ 600MHz |
| 应用： | ISM |
| 功率 - 输出： | 1dBm |
| 电源电压： | 2.7 V ~ 5.5 V |
| 电流 - 接收： | 20mA |
| 电流 - 传输： | 25mA |
| 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： | 28-QSOP |
| 包装： | 管件 |
Low-Voltage IF Transceiver with
Limiter/RSSI and Quadrature Modulator
Received Signal-Strength Indicator
The RSSI output provides a linear indication of the
received power level on the LIMIN input. The RSSI
monotonic dynamic range exceeds 90dB while provid-
ing better than 80dB linear range. The RSSI output
pulses current into a 330pF (typical) external filter
capacitor. The output is internally terminated to ground
with 11k ? , and this R-C time constant sets the decay
time. The rise time is limited by the RSSI pin’s output
drive current. The rise time is typically less than 100ns
with no capacitor connected. Larger capacitor values
slow the rise time.
Transmitter
The I, I and Q, Q baseband signals are input to a pair
of double-balanced mixers, which are driven from a
quadrature LO source. The quadrature LO is generated
on-chip from the oscillator input present at the LO and
LO pins. The two mixers’ outputs are summed. With
quadrature baseband inputs at the I, I and Q, Q pins,
the unwanted sideband is largely canceled. The result-
ing signal from the mixers is fed through a variable-gain
amplifier (VGA) with more than 40dB of gain-adjust
range.
0dBm (into 50 ? ). Connect a bypass capacitor from LO
to ground. Alternatively, a differential LO source (exter-
nally terminated) can drive LO and LO through series
coupling capacitors.
Power Management
To provide advanced system power management, the
MAX2510 features four operating modes that are
selected via the RXEN and TXEN pins, according to
Table 1 (supply currents assume GC = 0.5V).
In shutdown mode, all part functions are off. Standby
mode allows fastest enabling of either transmit or receive
mode by keeping the VREF generator active. This avoids
delays in stabilizing the limiter input circuitry and the off-
set correction loop. Transmit mode enables the LO
buffer, LO phase shifter, upconverter mixer, transmit
VGA, and transmit output driver amplifier. Receive mode
enables the LO buffer, downconverter mixer, limiting
amplifier, and RSSI functions.
Table 1. Power-Supply Mode Selection
TYPICAL
RXEN TXEN
MODE SUPPLY
STATE STATE
CURRENT (A)
The VGA output is connected to a driver amplifier with
an output 1dB compression point of +2dBm. The out-
put power can be adjusted from approximately +2dBm
to -40dBm by controlling the GC pin. The resulting sig-
nal appears as a differential output on the TXOUT and
TXOUT pins.
Low
Low
High
High
Low
High
Low
High
Shutdown
Transmit
Receive
Standby
0.2μ
17m
14m
0.5m
TXOUT and TXOUT are open-collector outputs and
need external pull-up inductors to V CC for proper oper-
ation, as well as a DC block so the load does not affect
DC biasing. A shunt resistor across TXOUT and TXOUT
(100 ? typical) can be used to back terminate an exter-
nal filter, as shown in the Typical Operating Circuit .
Alternatively, a single-ended load can be connected to
TXOUT, as long as TXOUT is tied directly to V CC . Refer
to the Applications Information section for details.
Local-Oscillator Inputs
The MAX2510 requires an external LO source for the
mixers. LO and LO are high-impedance inputs (>1k ? ).
The external LO signal is buffered internally and fed to
both the receive mixer and the LO phase shifter used
for the transmit mixers.
In a typical application, externally terminate the LO
source with a 50 ? resistor and then AC couple into LO.
Typically, the LO power range should be -13dBm to
__________Applications Information
RX Input Matching
The RXIN, RXIN port typically needs an impedance
matching network for proper connection to external cir-
cuitry, such as a filter. See the Typical Operating Circuit
for an example circuit topology. Note that the receiver
input can be driven either single-ended or differentially.
The component values used in the matching network
depend on the desired operating frequency as well as
on filter impedance. The following table indicates the
RXIN, RXIN single-ended input impedance (that is,
the impedance looking into either RXIN or RXIN ). The
information in Table 2 is also plotted in the Typical
Operating Characteristics .
10
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX2510EEI+ | 功能描述:射频收发器 IF Txr w/Limitr RSSI Quadrature Mod RoHS:否 制造商:Atmel 频率范围:2322 MHz to 2527 MHz 最大数据速率:2000 Kbps 调制格式:OQPSK 输出功率:4 dBm 类型: 工作电源电压:1.8 V to 3.6 V 最大工作温度:+ 85 C 接口类型:SPI 封装 / 箱体:QFN-32 封装:Tray |
| MAX2510EEI+T | 功能描述:射频收发器 IF Txr w/Limitr RSSI Quadrature Mod RoHS:否 制造商:Atmel 频率范围:2322 MHz to 2527 MHz 最大数据速率:2000 Kbps 调制格式:OQPSK 输出功率:4 dBm 类型: 工作电源电压:1.8 V to 3.6 V 最大工作温度:+ 85 C 接口类型:SPI 封装 / 箱体:QFN-32 封装:Tray |
| MAX2510EEI-T | 功能描述:射频收发器 RoHS:否 制造商:Atmel 频率范围:2322 MHz to 2527 MHz 最大数据速率:2000 Kbps 调制格式:OQPSK 输出功率:4 dBm 类型: 工作电源电压:1.8 V to 3.6 V 最大工作温度:+ 85 C 接口类型:SPI 封装 / 箱体:QFN-32 封装:Tray |
| MAX2510EVKIT-SO | 功能描述:射频开发工具 MAX2510 Eval Kit RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V |
| MAX2511EEI | 功能描述:射频收发器 IF Txr w/Limitr RSSI RoHS:否 制造商:Atmel 频率范围:2322 MHz to 2527 MHz 最大数据速率:2000 Kbps 调制格式:OQPSK 输出功率:4 dBm 类型: 工作电源电压:1.8 V to 3.6 V 最大工作温度:+ 85 C 接口类型:SPI 封装 / 箱体:QFN-32 封装:Tray |
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