Datasheet > LTC1064-1

LTC1064-1

更新时间： 2023-12-20 18:44:03

品牌	Logo	应用领域
亚德诺 - ADI		时钟
页数	文件大小	规格书
8页	175K
描述
低噪声、8 阶、时钟可扫频椭圆低通滤波器

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数据手册

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LTC1064-1 数据手册

LTC1064-1

U W

TYPICAL PERFOR A CE CHARACTERISTICS

Gain vs Frequency

25°C GAIN PEAK =

= 3MHz, f = 30kHz

0.4dB AT 30kHz

–15

–30

–45

–60

–75

–90

–105

–5

–15

–30

–45

–60

–75

–90

–105

CLK

= 2MHz, f = 20kHz

CLK

COMP1 = 10pF

COMP1 NOT USED,

COMP2 = 20pF

COMP2 = 15pF

–10

–15

–20

–25

–30

–35

= 4MHz, f = 40kHz

CLK

= 3MHz, f = 30kHz

CLK

COMP1 = 20pF

COMP2 = 30pF

COMP1 = 24pF

COMP2 = 36pF

= 5MHz, f = 50kHz

= 4MHz, f = 40kHz

CLK

= ±7.5V

CLK

= 50kHz

COMP1 = 30pF

COMP2 = 47pF

COMP1 = 36pF

= 5MHz

COMP2 = 47pF

125°C GAIN PEAK =

1dB AT 35kHz

= ±5V

= 25°C

= ±7.5V

= 25°C

COMP1 = 33pF

COMP2 = 56pF

100

FREQUENCY (kHz)

1064 G04

1064 G06

1064 G05

Typical Wideband Noise

Total Harmonic Distortion

(151µV_RMS) V_S= ±5V, T_A= 25°C

f_CLK= 1MHz, f_C= 10kHz Input

Grounded

(0.025%) V_S= ±7.5V, T_A= 25°C

f_CLK= 1MHz, f_C= 10kHz

Input = 1kHz at 3V_RMS

Power Supply Current vs Power

Supply Voltage

= 1MHz

CLK

= –55°C

= 25°C

= 125°C

10 12 14 16 18 20 22 24

TOTAL POWER SUPPLY VOLTAGE (V)

1064 G09

PI FU CTIO S

(Pin Numbers Refer to the 14-Pin Package)

COMP1, INV A, COMP2, INV C (Pins 1,6,7, and 13): For

filter cutoff frequencies higher than 20kHz, in order to

minimize the passband ripple, compensation capacitors

should be added between Pin 6 and Pin 7 (COMP1) and

Pin1andPin13(COMP2).ForCOMP1(COMP2),add1pF

(1.5pF) mica capacitor for each kHz increase in cutoff

frequency above 20kHz. For more detail refer to Gain vs

Frequency graphs.

is protected against static discharge. The device’s output,

Pin9,istheoutputofanopampwhichcantypicallysource/

sink 3mA/1mA. Although the internal op amps are unity

gain stable, driving long coax cables is not recommended.

When testing the device for noise and distortion, the

output, Pin 9, should be buffered (Figure 4). The op amp

power supply wire (or trace) should be connected

directly to the power source.

V_IN, V_OUT(Pins 2, 9): The input Pin 2 is connected to an

18k resistor tied to the inverting input of an op amp. Pin 2

AGND (Pins 3, 5): For dual supply operation these pins

should be connected to a ground plane. For single supply

10641fa

1 2 345 6 7 8

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