Datasheet > TLC2940

TLC2940

更新时间： 2024-11-29 22:53:03

品牌	Logo	应用领域
德州仪器 - TI		振荡器
页数	文件大小	规格书
9页	121K
描述
HIGH-PERFORMANCE CMOS VOLTAGE-CONTROLLED OSCILLATOR

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TLC2940 数据手册

TLC2940

HIGH-PERFORMANCE CMOS VOLTAGE-CONTROLLED OSCILLATOR

SLAS244 – OCTOBER 1999

PW PACKAGE

(TOP VIEW)

Stable Oscillation Using External Resistor

Lock Frequency Range:

– 35 MHz to 75 MHz (V

= 5 V ± 0.25 V,

LOGIC V

VCO V

BIAS

VCOIN

GND

T = –20°C to 85°C)

VCO OUT

FREFINPUT

PFD OUT

– 28 MHz to 50 MHz (V

= 3 V ± 0.15 V,

T = –20°C to 85°C)

Operating Free-Air Temperature Range,

T = –20°C to 85°C

8-Pin Thin Shrinked Small-Outline Package

description

The TLC2940 is a high-performance analog voltage-controlled oscillator (VCO) using Texas Instruments

0.8-µm CMOS process. The VCO oscillating operation can be performed by an external bias resistor connected

to the internal oscillation circuitry, and the oscillation frequency range is set by this bias resistor. The lock

frequency range for PLL applications is from 35 MHz to 75 MHz (over operating free-air temperature range,

= 5 V ± 5%), and from 28 MHz to 50 MHz (over operating free-air temperature range, V

= 3 V ± 5%).

The stable analog PLL can be configured within these frequency ranges.

The device is available in an 8-pin TSSOP surface-mount package.

The PLL block is configured using a counter, a required LPF, and a phase frequency detector (PFD).

AVAILABLE OPTIONS

PACKAGE

TSSOP

(PW)

–20°C to 85°C

TLC2940IPW

functional block diagram

BIAS

RESISTOR

Output

Buffer

Bias

Circuit

VCO OUT

VCO CONTROL

VCOIN

TLC2940

VCO OUT

BIAS

VCO

VCOIN

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.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

12 3 4 5 6 7...9

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