LTC1264-7CSW datasheet(3/16 Pages) LINER

Part #	LTC1264-7CSW

Description	Linear Phase, Group Delay Equalized, 8th Order Lowpass Filter

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Manufacturer	LINER [Linear Technology]

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LTC1264-7

12647fa

3

ELECTRICAL C

C

HARA TERISTICS

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Phase Factor (

F )(fCLK /fC) = 25:1, f ≤ fCUTOFF

407

± 2

Deg

Phase = 180

° – F (f/fC)(fCLK/fC) = 50:1, f ≤ fCUTOFF

388

± 2

Deg

(Note 2)

(fCLK /fC) = 25:1, f ≤ fCUTOFF

●

392

423

Deg

(fCLK /fC) = 50:1, f ≤ fCUTOFF

●

374

414

Deg

Phase Nonlinearity

(fCLK /fC) = 25:1, f ≤ fCUTOFF

±1.0

%

(Note 2)

(fCLK /fC) = 50:1, f ≤ fCUTOFF

±1.0

%

(fCLK /fC) = 25:1, f ≤ fCUTOFF

●

±2.0

%

(fCLK /fC) = 50:1, f ≤ fCUTOFF

●

±2.0

%

Group Delay (td)(fCLK /fC) = 25:1, f ≤ fCUTOFF

11.3

µs

td = (F/ 360)(1/fC);

(fCLK /fC) = 50:1, f ≤ fCUTOFF

21.6

µs

(Note 3, 4)

(fCLK /fC) = 25:1, f ≤ fCUTOFF

●

10.9

11.7

µs

(fCLK /fC) = 50:1, f ≤ fCUTOFF

●

20.8

22.9

µs

Group Delay Ripple

(fCLK /fC) = 25:1, f ≤ fCUTOFF

±1.0

%

(Note 3)

(fCLK /fC) = 50:1, f ≤ fCUTOFF

±1.0

%

(fCLK /fC) = 25:1, f ≤ fCUTOFF

●

±2.0

%

(fCLK /fC) = 50:1, f ≤ fCUTOFF

●

±2.0

%

Input Frequency Range

(fCLK /fC) = 25:1

<fCLK

kHz

(Table 9, 10)

(fCLK /fC) = 50:1

<fCLK/2

kHz

Maximum fCLK

VS = Single 5V (GND = 2V)

2

MHz

VS = ±5V

3

MHz

VS = ±7.5V

5

MHz

Clock Feedthrough

25:1,

±7.5V, f = fCLK

120

µVRMS

Wideband Noise

VS = Single 5V

140

± 5%

µVRMS

(1Hz

≤ f < fCLK)VS = ±5V

160

± 5%

µVRMS

VS = ±7.5V

175

± 5%

µVRMS

Input Impedance

45

65

87

k

Ω

Output DC Voltage Swing

VS = ±2.375V

±1.0

V

(Note 5)

VS = ±5V

●

±2.0

±2.3

V

VS = ±7.5V

●

±3.0

±3.8

V

Output DC Offset

25:1, VS = ±5V

±100

±220

mV

(fCLK = 1MHz)

50:1, VS = ±5V

±100

±220

mV

Output DC Offset TempCo

25:1, VS = ±5V

±200

µV/°C

50:1, VS = ±5V

±200

µV/°C

Power Supply Current

VS = ±2.375V

11

22

mA

(fCLK = 1MHz)

●

22

mA

VS = ±5V

14

23

mA

●

26

mA

VS = ±7.5V

17

28

mA

●

32

mA

Power Supply Range

±2.375

±8V

The

● denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VS = ±7.5V, RL = 10k, fCUTOFF = 100kHz or 50kHz, fCLK = 2.5MHz, TTL or

CMOS level (maximum clock rise or fall time

≤ 1µs) and all gain measurements are referenced to passband gain, unless otherwise

specified.

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