TS635DW datasheet(4/10 Pages) STMICROELECTRONICS

tên linh kiện	TS635DW

Giải thích chi tiết về linh kiện	DUAL WIDE BAND OPERATIONAL AMPLIFIER FOR ADSL LINE INTERFACE

PDF	10 Pages

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nhà sản xuất	STMICROELECTRONICS [STMicroelectronics]

Trang chủ	http://www.st.com

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TS635

4/10

INTERMODULATION DISTORTION

The curves shown below are the measurements results of a single operator wired as an adder with a gain

of 15dB.

The operational amplifier is supplied by a symmetric

±6V and is loaded with 25Ω.

Two synthesizers (Rhode & Schwartz SME) generate two frequencies (tones) (70 & 80kHz ; 180 &

280kHz).

An HP3585 spectrum analyzer measures the spurious level at different frequencies.

The curves are traced for different output levels (the value in the X ax is the value of each tone).

The output levels of the two tones are the same.

The generators and spectrum analyzer are phase locked to enhance measurement precision.

3rd ORDER INTERMODULATION

Gain=15dB, Vcc=

±6V, RL=25

Ω, 2 tones 70kHz/

80kHz

3rd ORDER INTERMODULATION

Gain=15dB, Vcc=

±6V, RL=25

Ω, 2 tones 180kHz/

280kHz

1,5

2,5

3,5

4,5

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

Vout peak (V)

230kHz

220kHz

90kHz

60kHz

1,522,533,5

4,5

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

Vout peak (V)

80kHz

640kHz

380kHz

740kHz

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