Datasheet > MAX2140_05

MAX2140_05

更新时间： 2024-11-16 04:42:07

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
13页	206K
描述
Complete SDARS Receiver

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MAX2140_05 数据手册

19-3123; Rev 3; 10/05

Complete SDARS Receiver

General Description

Features

The MAX2140 complete receiver is designed for satellite

digital audio radio services (SDARS). The device

includes a fully monolithic VCO and only needs a SAW at

the IF and a crystal to generate the reference frequency.

♦ Integrated Receiver, Requires Only One SAW

Filter

♦ Self-Contained RF AGC Loop

♦ Differential I/Q Interface

To form a complete SDARS radio, the MAX2140

requires only a low-noise amplifier (LNA), which can be

controlled by a baseband controller. The small number

of external components needed makes the MAX2140-

based platform the lowest cost and the smallest solu-

tion for SDARS.

♦ Complete Integrated Frequency Generation

♦ Bias Supply for External LNAs

♦ Overcurrent Protection

♦ Low-Power Standby Mode

♦ Very Small 44-Pin Thin QFN Package

The receiver includes a self-contained RF AGC loop

and baseband-controlled IF AGC loop, effectively pro-

viding a total dynamic range of over 92dB.

Channel selectivity is ensured by the SAW filter and by

on-chip monolithic lowpass filters.

Ordering Information

The fractional-N PLL allows a very small frequency

step, making possible the implementation of an AFC

loop. Additionally, the reference is provided by an

external XTAL and on-chip oscillator. A reference buffer

output is also provided.

A 2-wire interface (I²C-bus compatible) programs the

circuit for a wide variety of conditions, providing fea-

tures such as:

PART

TEMP RANGE

-40°C to +85°C

PIN-PACKAGE

44 Thin QFN-EP*

MAX2140ETH

MAX2140ETH+

*EP = Exposed paddle.

+Denotes lead-free package.

•Programmable gains

Block Diagram/Pin Configuration

•Lowpass filters tuning

•Individual functional block shutdown

The MAX2140 minimizes the requirement on the base-

band controller. No compensation or calibration proce-

dures are required. The device is available in a 7mm ✕

7mm 44-pin thin QFN package.

XM TUNER

VCC_FE0

RFIN+

VTUNE

VCCREG

RFIN-

31 VCC_VCO

30 VCC_FE3

29 CPOUT

MAX2140

VCC_FE1

IFOUT+

IFOUT-

1/N

Applications

Satellite Digital Audio Radio Services (SDARS)

AGC

Σ ∆ - MOD PFD CHP

1/R

LOCK

2.4GHz ISM Radios

RFAGC_C

VCC_FE2

AGCPWM

IFIN+

27 VCC_A

26 VCC_D

25 REFOUT

LPF

HPF

/4/8

QUAD

Purchase of I C components from Maxim Integrated Products,

Inc., or one of its sublicensed Associated Companies, conveys

XTAL

a license under the Philips I C Patent Rights to use these com-

HPF

IFIN-

ponents in an I C system, provided that the system conforms to

VCC_XTAL

the I C Standard Specification as defined by Philips.

ACTUAL SIZE

7mm x 7mm

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...13

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与MAX2140_05相关器件

型号	品牌	获取价格	描述	数据表
MAX2140_1	MAXIM	获取价格	Evaluation Kit
MAX2140_V01	MAXIM	获取价格	Complete SDARS Receiver
MAX2140ETH	MAXIM	获取价格	Complete SDARS Receiver
MAX2140ETH+	MAXIM	获取价格	Complete SDARS Receiver
MAX2140ETH+T	MAXIM	获取价格	暂无描述
MAX2140ETH-T	MAXIM	获取价格	Consumer Circuit, BICMOS, 7 X 7 MM, TQFN-44
MAX2140EVKIT	MAXIM	获取价格	Evaluation Kit
MAX214C/D	MAXIM	获取价格	Programmable DTE/DCE, +5V RS-232 Transceiver
MAX214CPI	MAXIM	获取价格	Programmable DTE/DCE, +5V RS-232 Transceiver
MAX214CPI+	MAXIM	获取价格	Line Transceiver, 1 Func, 3 Driver, 5 Rcvr, CMOS, PDIP28, PLASTIC, DIP-28

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