Datasheet > LM1971_14

LM1971_14

更新时间： 2024-11-27 02:58:51

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德州仪器 - TI		/
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描述
Overture Audio Attenuator Series Digitally Controlled 62 dB Audio Attenuator

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LM1971_14 数据手册

LM1971

www.ti.com

SNAS104B –FEBRUARY 1995–REVISED APRIL 2013

LM1971 Overture™ Audio Attenuator Series Digitally Controlled 62 dB Audio Attenuator

with/Mute

Check for Samples: LM1971

FEATURES

DESCRIPTION

The LM1971 is a digitally controlled single channel

audio attenuator fabricated on a CMOS process.

Attenuation is variable in 1 dB steps from 0 dB to −62

dB. A mute function disconnects the input from the

output, providing over 100 dB of attenuation.

•

3-Wire Serial Interface

•

Mute Function

Click and Pop Free Attenuation Changes

8-Pin Plastic PDIP and SOIC Packages

Available

The performance of the device is exhibited by its

ability to change attenuation levels without audible

clicks or pops. In addition, the LM1971 features a low

Total Harmonic Distortion (THD) of 0.0008%, and a

Dynamic Range of 115 dB, making it suitable for

digital audio needs. The LM1971 is available in both

8-pin plastic PDIP or SOIC packages.

APPLICATIONS

•

Communication Systems

Cellular Phones and Pagers

Personal Computer Audio Control

Electronic Music (MIDI)

The LM1971 is controlled by a TTL/CMOS compatible

3-wire serial digital interface. The active low LOAD

line enables the data input registers while the CLOCK

line provides system timing. Its DATA pin receives

serial data on the rising edge of each CLOCK pulse,

allowing the desired attenuation setting to be

selected.

Sound Reinforcement Systems

Audio Mixing Automation

KEY SPECIFICATIONS

•

Total Harmonic Distortion 0.0008 % (Typ)

Frequency Response > 200 kHz (−3 dB) (Typ)

Attenuation Range (Excluding Mute) 62 dB

(Typ)

•

Dynamic Range 115 dB (Typ)

Mute Attenuation 102 dB (Typ)

Typical Application

Figure 1. Typical Audio Attenuator Application Circuit

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

Overture is a trademark of dcl_owner.

All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...19

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与LM1971_14相关器件

型号	品牌	获取价格	描述	数据表
LM1971M	NSC	获取价格	LM1971 Overture⑩ Audio Attenuator Series Digi
LM1971M	TI	获取价格	LM1971 Overture Audio Attenuator Series Digitally Controlled 62 dB Audio Attenuator
LM1971M/NOPB	TI	获取价格	Digitally Controlled 62 dB Audio Attenuator with/Mute 8-SOIC -40 to 85
LM1971MWC	NSC	获取价格	IC SPECIALTY CONSUMER CIRCUIT, UUC, WAFER, Consumer IC:Other
LM1971MWC	TI	获取价格	SPECIALTY CONSUMER CIRCUIT, UUC, WAFER
LM1971MX	TI	获取价格	LM1971 Overture Audio Attenuator Series Digitally Controlled 62 dB Audio Attenuator
LM1971MX/NOPB	NSC	获取价格	IC SPECIALTY CONSUMER CIRCUIT, PDSO8, 0.150 INCH, PLASTIC, SOP-8, Consumer IC:Other
LM1971MX/NOPB	TI	获取价格	Overture Audio Attenuator Series Digitally Controlled 62 dB Audio Attenuator
LM1971N	NSC	获取价格	LM1971 Overture⑩ Audio Attenuator Series Digi
LM1972	NSC	获取价格	Pot 2-Channel 78dB Audio Attenuator with Mute

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