AD608AR

更新时间： 2024-11-26 22:47:31

品牌	Logo	应用领域
亚德诺 - ADI		限制器
页数	文件大小	规格书
12页	199K
描述
Low Power Mixer/Limiter/RSSI 3 V Receiver IF Subsystem

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AD608AR 数据手册

Low Power Mixer/Limiter/RSSI

3 V Receiver IF Subsystem

AD608

T he RF and LO bandwidths both exceed 500 MHz. In a typical

IF application, the AD608 will accept the output of a 240 MHz

SAW filter and downconvert it to a nominal 10.7 MHz IF with

a conversion gain of 24 dB (Z_IF= 165 Ω). T he AD608’s loga-

rithmic/limiting amplifier section handles any IF from LF to as

high as 30 MHz.

FEATURES

Mixer

–15 dBm 1 dB Com pression Point

–5 dBm IP3

24 dB Conversion Gain

>500 MHz Input Bandw idth

Logarithm ic/ Lim iting Am plifier

80 dB RSSI Range

؎3؇ Phase Stability over 80 dB Range

Low Pow er

21 m W at 3 V Pow er Consum ption

CMOS-Com patible Pow er-Dow n to 300 ␮W typ

200 ns Enable/ Disable Tim e

T he mixer is a doubly-balanced “Gilbert-Cell” type and oper-

ates linearly for RF inputs spanning –95 dBm to –15 dBm. It

has a nominal –5 dBm third-order intercept. An onboard LO

preamplifier requires only –16 dBm of LO drive. T he mixer’s

current output drives a reverse-terminated, industry-standard

10.7 MHz 330 Ω filter.

T he nominal logarithmic scaling is such that the output is

+0.2 V for a sinusoidal input to the IF amplifier of –75 dBm

and +1.8 V at an input of +5 dBm; over this range the logarith-

mic conformance is typically ±1 dB. T he logarithmic slope is

proportional to the supply voltage. A feedback loop automati-

cally nulls the input offset of the first stage down to the sub-

microvolt level.

APPLICATIONS

PHS, GSM, TDMA, FM, or PM Receivers

Battery-Pow ered Instrum entation

Base Station RSSI Measurem ent

T he AD608’s limiter output provides a hard-limited signal out-

put at 400 mV p-p. T he voltage gain of the limiting amplifier to

this output is more than 100 dB. T ransition times are 11 ns and

the phase is stable to within ±3° at 10.7 MHz for signals from

–75 dBm to +5 dBm.

GENERAL D ESCRIP TIO N

T he AD608 provides both a low power, low distortion, low

noise mixer and a complete, monolithic logarithmic/limiting

amplifier using a “successive-detection” technique. It provides

both a high speed RSSI (Received Signal Strength Indicator)

output with 80 dB dynamic range and a hard-limited output.

T he RSSI output is from a two-pole post-demodulation low-

pass filter and provides a loadable output voltage of +0.2 V to

+1.8 V. T he AD608 operates from a single 2.7 V to 5.5 V sup-

ply at a typical power level of 21 mW at 3 V.

T he AD608 is enabled by a CMOS logic-level voltage input,

with a response time of 200 ns. When disabled, the standby

power is reduced to 300 µW within 400 ns.

T he AD608 is specified for the industrial temperature range of

–25°C to +85°C for 2.7 V to 5.5 V supplies and –40°C to +85°C

for 4.5 V to 5.5 V supplies. It comes in a 16-pin plastic SOIC.

FUNCTIO NAL BLO CK D IAGRAM

110dB LIMITER GAIN

90dB RSSI

24dB MIXER GAIN

3dB NOMINAL

INSERTION LOSS

RSSI OUTPUT

20mV/dB

0.2V TO 1.8V

RSSI

IF INPUT

7 FULL-WAVE

RECTIFIER CELLS

±6mA MAX OUTPUT

(±890mV INTO 165Ω)

–75dBm TO

≈

+15dBm

RFHI

2MHz

LPF

COM3

VPS2

MIXER

10.7MHz

BANDPASS

FILTER

IFHI

RF INPUT

–95 TO

MXOP

+2.7V TO 5.5V

≈

–15dBm

BPF

DRIVER

LMOP

5-STAGE IF AMPLIFIER

(16dB PER STAGE)

330Ω

LIMITER

OUTPUT

400mVp-p

330Ω

RFLO

10nF

PREAMP

VMID

FINAL

LIMITER

IFLO

100nF

100Ω

MID-SUPPLY

IF BIAS

LOHI

FDBK

18nF

±50µA

BIAS

AD608

COM2

VPS1 COM1

PRUP

NOTES:

–15dBm = ±56mV MAX FOR LINEAR OPERATION

+2.7V TO

5.5V

LO INPUT

–16dBm

CMOS LOGIC

INPUT

39.76µV RMS TO 397.6mV RMS FOR ±1dB RSSI

ACCURACY

REV. B

Inform ation furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assum ed by Analog Devices for its

use, nor for any infringem ents of patents or other rights of third parties

which m ay result from its use. No license is granted by im plication or

otherwise under any patent or patent rights of Analog Devices.

One Technology Way, P.O. Box 9106, Norw ood, MA 02062-9106, U.S.A.

Tel: 617/ 329-4700 Fax: 617/ 326-8703

12 3 4 5 6 7...12

中文翻译

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AD608AR 替代型号

型号	品牌	替代类型	描述	数据表
AD608AR-REEL	ADI	完全替代	Low Power Mixer/Limiter/RSSI 3 V Receiver IF Subsystem
AD608ARZ-RL	ADI	类似代替	Low Power Mixer/Limiter/RSSI 3 V Receiver IF Subsystem
AD608ARZ	ADI	类似代替	Low Power Mixer/Limiter/RSSI 3 V Receiver IF Subsystem

与AD608AR相关器件

型号	品牌	获取价格	描述	数据表
AD608AR-REEL	ADI	获取价格	Low Power Mixer/Limiter/RSSI 3 V Receiver IF Subsystem
AD608ARZ	ADI	获取价格	Low Power Mixer/Limiter/RSSI 3 V Receiver IF Subsystem
AD608ARZ-RL	ADI	获取价格	Low Power Mixer/Limiter/RSSI 3 V Receiver IF Subsystem
AD-60A	ASTRODYNE	获取价格	60W Single Output Switching Power Supply
AD60A-S12	ADAM-TECH	获取价格	5000
AD-60B	ASTRODYNE	获取价格	60W Single Output Switching Power Supply
AD60F	ETC	获取价格	Fast Asymmetric Thyristors
AD60F08KAC	ETC	获取价格	THYRISTOR MODULE\|DOUBLER\|HALF-CNTLD\|POSITIVE\|15V V(RRM)\|60A I(T)
AD60F08KAF	ETC	获取价格	THYRISTOR MODULE\|DOUBLER\|HALF-CNTLD\|POSITIVE\|15V V(RRM)\|60A I(T)
AD60F08KBC	ETC	获取价格	THYRISTOR MODULE\|DOUBLER\|HALF-CNTLD\|POSITIVE\|15V V(RRM)\|60A I(T)

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