LTC1066-1CS View Datasheet(PDF) - Linear Technology

Part Name

Description

Manufacturer

LTC1066-1CS

14-Bit DC Accurate Clock-Tunable, 8th Order Elliptic or Linear Phase Lowpass Filter

Linear Technology 

TYPICAL PERFOR A CE CHARACTERISTICS

LTC1066-1

Passband Gain vs Frequency

5

4

VS = ±7.5V, TA = 70°C

fCLK/fC = 50:1

3 RF = 20k, CF = 1µF

RC COMPENSATION

2 = 15pF IN SERIES

1 WITH 30kΩ

0

–1

–2

A. fCLK = 2MHz

–3 B. fCLK = 3MHz

–4

C. fCLK = 4MHz

D. fCLK = 5MHz

–5

1

10

A BC D

100 200

FREQUENCY (kHz)

1066-1 G09

THD + Noise vs Input Voltage

– 40

– 45

TA = 25°C

fIN = 1kHz

–50 fCLK = 1MHz

fCLK/fC = 50:1

– 55

– 60

VS = ±5V

– 65

– 70

– 75

VS = ±7.5V

– 80

– 85

– 90

0.1

1

INPUT VOLTAGE (VRMS)

5

1066-1 G12

THD + Noise vs Frequency

– 40

– 45

VS = ±7.5V

VIN = 1VRMS

–50 TA = 25°C

fCLK = 2.5MHz

–55 fCLK/fC = 50:1

– 60

– 65

– 70

C

– 75

B

–80 A. RL = ∞, CL = 100pF

A

– 85

B. RL = 1k, CL = 100pF

C. RL = 200Ω, CL = 100pF

– 90

1

10

FREQUENCY (kHz)

50

1066-1 G15

Group Delay vs Frequency

80

70

A.

B.

fCLK/fC

fCLK/fC

=

=

50:1 (PIN 8 TO V+)

100:1 (PIN 8 TO V–)

C. LINEAR PHASE REPONSE

A

fCLK/fC = 100:1 (PIN 8 TO GND)

60

VS = ±5V

B

TA = 25°C

50 fC = 20kHz

40

C

30

20

24 6

8 10 12 14 16 18 20 22

FREQUENCY (kHz)

1066-1 G10

THD + Noise vs Input Voltage

– 40

–45 fIN = 1kHz

VS = SINGLE 5V

–50 fCLK = 1MHz

– 55

fCLK/fC = 50:1

TA = 25°C

– 60

GND PIN 15 AT 2V

– 65

– 70

– 75

– 80

GND PIN 15 AT 2.5V

– 85

– 90

0.1

1

INPUT VOLTAGE (VRMS)

2

1066-1 G13

THD + Noise vs Frequency

– 40

–45 VS = ±5V

VIN = 1VRMS

–50 TA = 25°C

– 55

fCLK = 1MHz

fCLK/fC = 50:1

– 60

(5 REPRESENTATIVE

UNITS)

– 65

– 70

– 75

– 80

– 85

– 90

1

10

20

FREQUENCY (kHz)

1066-1 G16

Phase Matching vs Frequency

1.25

PHASE DIFFERENCE BETWEEN

ANY TWO UNITS (SAMPLE OF

1.00 50 REPRESENTATIVE UNITS)

VS ≥ ±5V, TA = 25°C

fCLK ≤ 2.5MHz

A

0.75

B

0.50

0.25

0

0.2

A. ELLIPTIC RESPONSE

fCLK/fC = 50:1 (PIN 8 to V+)

B. LINEAR PHASE RESPONSE

fCLK/fC = 100:1 (PIN8 TO GND)

0.4

0.6

0.8

1.0

FREQUENCY (fCUTOFF/FREQUENCY)

1066-1 G11

THD + Noise vs Frequency

– 40

– 45

VS = ±7.5V

VIN = 1VRMS

–50 TA = 25°C

fCLK = 2.5MHz

–55 fCLK/fC = 50:1

– 60

(5 REPRESENTATIVE

UNITS)

– 65

– 70

– 75

– 80

– 85

– 90

1

10

FREQUENCY (kHz)

50

1066-1 G14

THD + Noise vs Frequency

– 40

–45 VS = SINGLE 5V

VIN = 0.5VRMS

–50 TA = 25°C

– 55

fCLK = 1MHz

fCLK/fC = 50:1

– 60

(5 REPRESENTATIVE

UNITS)

– 65

– 70

– 75

– 80

– 85

– 90

1

10

20

FREQUENCY (kHz)

1066-1 G17

5

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