參數(shù)資料
型號(hào)： ADL5371ACPZ-R2
廠商： ANALOG DEVICES INC
元件分類： 調(diào)制器/解調(diào)器
英文描述： 700 MHz - 1300 MHz RF/MICROWAVE QUADRAPHASE MODULATOR
封裝： LEAD FREE, MO-220VGGD-2, LFCSP-24
文件頁(yè)數(shù)： 2/20頁(yè)
文件大?。?/td> 930K
代理商： ADL5371ACPZ-R2
ADL5371
Rev. 0 | Page 10 of 20
THEORY OF OPERATION
CIRCUIT DESCRIPTION
Overview
The ADL5371 can be divided into five circuit blocks: the LO
interface, the baseband voltage-to-current (V-to-I) converter,
the mixers, the differential-to-single-ended (D-to-S) converter,
and the bias circuit. A detailed block diagram of the device is
shown in Figure 22.
PHASE
SPLITTER
OUT
LOIP
LOIN
IBBP
IBBN
QBBP
QBBN
Σ
0
65
10
-0
23
Figure 22. Block Diagram
The LO interface generates two LO signals in quadrature. These
signals are used to drive the mixers. The I/Q baseband input
signals are converted to currents by the V-to-I stages, which
then drive the two mixers. The outputs of these mixers combine
to feed the output balun, which provides a single-ended output
interface. The bias cell generates a reference current for the
V-to-I stage.
LO Interface
The LO interface consists of a polyphase quadrature splitter
followed by a limiting amplifier. The LO input impedance is set
by the polyphase. The LO can be driven either single-ended or
differentially. When driven single-ended, the LOIN pin should
be ac-grounded via a capacitor. Each quadrature LO signal then
passes through a limiting amplifier that provides the mixer with
a limited drive signal.
V-to-I Converter
The differential baseband inputs (QBBP, QBBN, IBBN, and
IBBP) consist of the bases of PNP transistors, which present a
high impedance. The voltages applied to these pins drive the
V-to-I stage that converts baseband voltages into currents. The
differential output currents of the V-to-I stages feed each of
their respective Gilbert-cell mixers. The dc common-mode
voltage at the baseband inputs sets the currents in the two mixer
cores. Varying the baseband common-mode voltage varies the
current in the mixer and affects overall modulator performance.
The recommended dc voltage for the baseband common-mode
voltage is 500 mV dc.
Mixers
The ADL5371 has two double-balanced mixers: one for the
in-phase channel (I channel) and one for the quadrature
channel (Q channel). Both mixers are based on the Gilbert-cell
design of four cross-connected transistors. The output currents
from the two mixers sum together into an on-chip balun, which
converts the differential signal to single-ended.
D-to-S Stage
The output D-to-S stage consists of an on-chip balun that
converts the differential signal to a single-ended signal. The
balun presents high impedance to the output (VOUT).
Therefore, a matching network may be needed at the output for
optimal power transfer.
Bias Circuit
An on-chip band gap reference circuit is used to generate a
proportional-to-absolute temperature (PTAT) reference current
for the V-to-I stage.
相關(guān)PDF資料
PDF描述
ADL5372ACPZ-R2 1500 MHz - 2500 MHz RF/MICROWAVE QUADRAPHASE MODULATOR
ADL5375ACPZ-15-WP 400 MHz - 6000 MHz RF/MICROWAVE QUADRAPHASE MODULATOR
ADL5375ACPZ-15-R7 400 MHz - 6000 MHz RF/MICROWAVE QUADRAPHASE MODULATOR
ADL5375ACPZ-05-WP 400 MHz - 6000 MHz RF/MICROWAVE QUADRAPHASE MODULATOR
ADL5375ACPZ-05-R7 400 MHz - 6000 MHz RF/MICROWAVE QUADRAPHASE MODULATOR
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADL5371ACPZ-R7 功能描述:IC MOD QUAD 500-1500 MHZ 24LFCSP RoHS:是 類別:RF/IF 和 RFID >> RF 調(diào)制器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 功能:調(diào)制器 LO 頻率:700MHz ~ 2.3GHz RF 頻率:700MHz ~ 2.3GHz P1dB:1dBm 底噪:-148dBm/Hz 輸出功率:-1dBm 電流 - 電源:46mA 電源電壓:2.7 V ~ 3.6 V 測(cè)試頻率:1.75GHz 封裝/外殼:28-WFQFN 裸露焊盤 包裝:帶卷 (TR)
ADL5371ACPZ-WP 制造商:Analog Devices 功能描述:QUADRATURE MOD 700MHZ 24LFCSP EP - Waffle Pack
ADL5371-EVALZ 制造商:Analog Devices 功能描述:EVAL BOARD - Bulk
ADL5372 制造商:AD 制造商全稱:Analog Devices 功能描述:400 MHz to 6 GHz Broadband Quadrature Modulator
ADL5372ACPZ-R2 制造商:Analog Devices 功能描述:1500 MHZ TO 2500 MHZ QUADRATURE MODULATOR - Tape and Reel
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*