MAX2721EUP+

更新时间： 2024-02-14 10:10:18

品牌	Logo	应用领域
美信 - MAXIM		驱动器
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24页	318K
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MAX2721EUP+ 数据手册

19-1606; Rev 0; 1/00

1.7GHz to 2.5GHz, Direct I/Q Modulator with

VGA and PA Driver

General Description

Features

The MAX2720/MAX2721 are low-cost, high-performance,

direct I/Q modulators designed for use in wideband-

CDMA and wireless local-loop (WLL) systems. Their

direct-upconversion architecture reduces system cost,

component count, and board space compared to

devices with dual-conversion architectures.

ꢀ RF Frequency Range

1.7GHz to 2.1GHz (MAX2720)

2.1GHz to 2.5GHz (MAX2721)

ꢀ Integrated I/Q Modulator, LO Doubler, VGA, and

PA Driver

The MAX2720/MAX2721 include an I/Q modulator, a

variable gain amplifier (VGA), and a power amplifier

(PA) driver. The quadrature modulator accepts differential

baseband I/Q signals and directly modulates an RF

carrier in the 1.7GHz to 2.1GHz range (MAX2720) or

the 2.1GHz to 2.5GHz range (MAX2721). The VGA pro-

vides 35dB of output power control. The modulator’s

amplitude and phase balance yield 35dBc of sideband

suppression and 30dBc of carrier suppression. These

devices feature an LO frequency doubler that allows

the external LO source to operate at half-frequency or

full-frequency when disabled.

ꢀ 35dB VGA Gain Control Range

ꢀ 35dBc Sideband Suppression

ꢀ 30dBc Carrier Suppression

ꢀ Low Supply Current

77mA (MAX2720), 86mA (MAX2721)

20mA Reduction with PA Driver Disabled

ꢀ 0.1µA Supply Current in Shutdown Mode

ꢀ +2.7V to +3.3V Single-Supply Operation

The MAX2720/MAX2721 operate from a single +2.7V to

+3.3V supply and require only 77mA (MAX2720) or

86mA (MAX2721) of supply current. An additional

20mA of supply current is saved by disabling the

stand-alone PA driver. A low-power shutdown mode

further reduces supply current to less than 0.1µA. The

device is packaged in the small 20-pin TSSOP-EP with

exposed paddle to improve RF performance.

Ordering Information

PART

TEMP. RANGE

-40°C to +85°C

PIN-PACKAGE

20 TSSOP-EP*

MAX2720EUP

MAX2721EUP

*Exposed paddle.

Applications

Functional Diagram

Wireless Local Loop (WLL)

Wideband CDMA Systems

LMDS/MMDS

MAX2720/MAX2721

GND

DROUT

SHDN

20 DRIN

19 GND

18 PC

PA DRIVER

VGA

2.4GHz Broadband ISM Radios

DCS/PCS Base Stations

17 MODOUT

GND

ENX2

90°

I-

0°

14 Q-

13 Q+

I+

Pin Configuration appears at end of data sheet.

BIAS

GND 10

11 LO

LO DOUBLER

________________________________________________________________ Maxim Integrated Products

For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.

For small orders, phone 1-800-835-8769.

12 3 4 5 6 7...24

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与MAX2721EUP+相关器件

型号	品牌	获取价格	描述	数据表
MAX2721EUP-T	MAXIM	获取价格	Up Converter, 2100MHz Min, 2500MHz Max, -2.5dBm Output Power-Max, TSSOP-20
MAX2721EVKIT	MAXIM	获取价格	Evaluation Kit for the MAX2720/MAX2721
MAX274	MAXIM	获取价格	4th- and 8th-Order Contnuous-Time Active Filters
MAX274/MAX275	MAXIM	获取价格	4th-and 8th-Order Continuous-Time Active Filters
MAX2740	MAXIM	获取价格	Integrated GPS Receiver and Synthesizer
MAX2740_1	MAXIM	获取价格	Evaluation Kit
MAX2740ECM	MAXIM	获取价格	Integrated GPS Receiver and Synthesizer
MAX2740EVKIT	MAXIM	获取价格	Evaluation Kit for the MAX2740
MAX2741	MAXIM	获取价格	Integrated L1-Band GPS Receiver
MAX2741_1	MAXIM	获取价格	Evaluation Kit

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