Datasheet > LTC1069-7

LTC1069-7

更新时间： 2023-12-20 18:46:08

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
10页	163K
描述
线性相位 8 阶低通滤波器

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LTC1069-7 数据手册

LTC1069-7

ELECTRICAL CHARACTERISTICS ^Thel denotes speciﬁcations which apply over the full operating

temperature range. f_CUTOFFis the ﬁlter’s cutoff frequency and is equal to f_CLK/25. The f_CLKsignal level is TTL or CMOS (max clock rise

or fall time ≤1μs), R_L= 10k, T_A= 25°C, unless otherwise speciﬁed. All AC gains are measured relative to the passband gain.

SYMBOL

CONDITIONS

V = 5V, f = 2.5MHz

CLK

MIN

TYP

–16.5

MAX UNITS

Gain at 1.5f

CUTOFF

–19

= 150kHz, V = 1V

RMS

–14

–17

–38

TEST

V = 4.75V, f

TEST

= 500kHz

CLK

–18.1

–43

–20

–55

= 30kHz, V = 0.5V

RMS

Gain at 2.0f

Gain at 5.0f

V = 5V, f

TEST

= 2.5MHz

CLK

= 200kHz, V = 1V

RMS

V = 4.75V, f

TEST

= 500kHz

CLK

–41

–48

–70

–39

–55

= 40kHz, V = 0.5V

IN RMS

V = 4.75V, f

TEST

= 500kHz

CLK

–59

= 100kHz, V = 0.5V

IN RMS

Gain at f

(160kHz)

V = 5V, f = 4MHz

CLK

TEST

–2.1

–30.5

–235

–3.0

CUTOFF

= 160kHz, V = 1V

IN RMS

ꢀhase at 0.5f

V = 5V, f

CLK

TEST

= 2.5MHz

= 500kHz

–35

–25

Deg

CUTOFF

= 50kHz

ꢀhase at f

V = 5V, f

CLK

–240

–230

CUTOFF

TEST

= 100kHz

ꢀassband ꢀhase Deviation from

Linear ꢀhase (Note 1)

V = 5V, f

CLK

Output DC Offset (Input at GND)

V = 5V, f

CLK

125

V = 4.75V, f

= 400kHz

CLK

Output Voltage Swing

V = 5V, I

≤ 1mA, R = 10k

3.5

2.6

4.0

3.6

ꢀ-ꢀ

SOURCE SINK

V = 4.75V, I

≤ 1mA, R = 10k

SOURCE SINK

ꢀower Supply Current

V = 5V, f

= 500kHz

CLK

V = 4.75V, f

= 400kHz

CLK

16.5

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Example: An LTC1069-7 has ꢀhase at 0.5f

= –30.5° and ꢀhase at

CUTOFF

= –235°.

CUTOFF

ꢀassband ꢀhase Deviation from Linear ꢀhase

= 1/2[180° – (–235°)] – [(180° – (–30.5°)] = –3°

Note 2: ꢀhase Deviation = 1/2(ꢀhase at 0Hz – ꢀhase at f ) – (ꢀhase

CUTOFF

at 0Hz – ꢀhase at 0.5f

)

CUTOFF

ꢀhase at 0Hz = 180° (guaranteed by design)

10697fa

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