參數(shù)資料
型號: MAX2510EEI
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: 通信及網(wǎng)絡(luò)
英文描述: Low-Voltage IF Transceiver with Limiter/RSSI and Quadrature Modulator
中文描述: SPECIALTY TELECOM CIRCUIT, PDSO28
封裝: QSOP-28
文件頁數(shù): 9/12頁
文件大?。?/td> 126K
代理商: MAX2510EEI
_______________Detailed Desc ription
The following sections describe each of the blocks
shown in Figure 1.
Rec eiver
The receiver consists of two basic blocks: the down-
converter mixer and the limiter/received-signal-strength
indicator (RSSI) section.
The receiver inputs are the RXIN and
RXIN
pins, which
should be AC coupled and may require a matching
network as shown in the Typical Operating Circuit To
design a matching network for a particular application,
consult the RXIN Input Impedance plots in the Typical
Operating Characteristics, as well as the Applications
Informationsections.
Downconverter Mixer
The downconverter consists of an a double-balanced
mixer and an output buffer. The MIXOUT output, a single-
ended current source, can drive a shunt-terminated
330
filter (165
load) to more than 2Vp-p over the
entire supply range, providing excellent dynamic
range. The local oscillator (LO) input is buffered and
drives the mixer.
Limiter
The signal passes through an external IF bandpass fil-
ter into the limiter input (LIMIN). LIMIN is a single-
ended input that is biased at the VREF pin voltage. The
open-circuit input impedance is typically greater than
10k
to VREF. For proper operation, LIMIN must be
tied to VREF through the filter-terminating impedance
(which should be less than 1k
). The limiter provides a
constant output level, which is largely independent of
the limiter input signal level over a 90dB input range.
The low-impedance limiter outputs provide 600mVp-p
single-ended swing (1.2Vp-p differential swing) and
can drive CMOS inputs directly.
M
Low-Voltage IF Transc eiver with
Limiter/RS S I and Quadrature Modulator
_______________________________________________________________________________________
9
RXIN
VREF = V
CC
/ 2
MIXOUT
LIMIN
VREF
CZ
CZ
IF BPF
LIMOUT
RSSI
LIMOUT
RSSI
RXIN
LO
LO
I
Q
I
Q
POWER
MANAGEMENT
TXOUT
TXOUT
LOPHASE
SHIFTER
90°
LIMITER
TRANSMIT VGA/PA
PA
VGA
MAX2510
OFFSET
CORRECTION
Σ
RXEN
TXEN
GC
g
m
Figure 1. Functional Diagram
相關(guān)PDF資料
PDF描述
MAX2510 Low-Voltage IF Transceiver with Limiter/RSSI and Quadrature Modulator
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MAX2510EEI+T 功能描述:射頻收發(fā)器 IF Txr w/Limitr RSSI Quadrature Mod RoHS:否 制造商:Atmel 頻率范圍:2322 MHz to 2527 MHz 最大數(shù)據(jù)速率:2000 Kbps 調(diào)制格式:OQPSK 輸出功率:4 dBm 類型: 工作電源電壓:1.8 V to 3.6 V 最大工作溫度:+ 85 C 接口類型:SPI 封裝 / 箱體:QFN-32 封裝:Tray
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