LTC1064-7CS datasheet(3/12 Pages) LINER

3 / 12 page

LTC1064-7

ELECTRICAL C

HARA TERISTICS

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Group Delay (td)(fCLK/fC) = 50:1, f ≤ fCUTOFF

59.7

± 0.5

µs

td = (F /360)(1/ fC)(fCLK/fC) = 100:1, f ≤ fCUTOFF

117.0

± 1.0

µs

(Note 2)

(fCLK/fC) = 50:1, f ≤ fCUTOFF

58.6

59.7

60.7

µs

(fCLK/fC) = 100:1, f ≤ fCUTOFF

115.0

117.0

119.0

µs

Group Delay Deviation

(fCLK/fC) = 50:1, f ≤ fCUTOFF

±1.0

(Notes 2, 3)

(fCLK/fC) = 100:1, f ≤ fCUTOFF

±1.0

(fCLK/fC) = 50:1, f ≤ fCUTOFF

±2.0

(fCLK/fC) = 100:1, f ≤ fCUTOFF

±2.0

Input Frequency Range (Table 9)

(fCLK/fC) = 50:1

<fCLK

kHz

(fCLK/fC) = 100:1

<fCLK/2

kHz

Maximum fCLK

VS = 5V (AGND = 2V)

2.0

MHz

VS = ±5V

3.5

MHz

VS = ±7.5V

5.0

MHz

Clock Feedthrough (f

≥ fCLK)

50:1

200

µVRMS

Wideband Noise

VS = ±2.5V

± 5%

µVRMS

(1Hz

≤ f ≤ fCLK)VS = ±5V

105

± 5%

µVRMS

VS = ±7.5V

115

± 5%

µVRMS

Input Impedance

Ω

Output DC Voltage Swing

VS = ±2.375V

±1.0

±1.2

(Note 5)

VS = ±5V

±2.1

±3.2

VS = ±7.5V

±3.0

±5.0

Output DC Offset

50:1, VS = ±5V

±150

±220

100:1, VS = ±5V

±150

Output DC Offset TempCo

50:1, VS = ±5V

±200

µV/°C

100:1, VS = ±5V

±200

µV/°C

Power Supply Current

VS = ±2.375V, TA = 25°C11

VS = ±5V, TA = 25°C14

VS = ±7.5V, TA = 25°C17

Power Supply Range

±2.375

±8V

VS = ±7.5V, RL = 10k, TA = 25°C, fCUTOFF = 10kHz or 20kHz, fCLK = 1MHz, TTL or CMOS level (maximum clock rise and fall time ≤ 1µs)

and all gain measurements are referenced to passband gain, unless otherwise specified.

Figure 1. Phase Response in the Passband (Note 1)

FREQUENCY (kHz)

–360

–270

–180

–90

180

1164-7 F01

fCLK = 1MHz

RATIO = 50:1

The q denotes specifications which apply over the full operating temperature range.

Note 1: Input frequencies, f, are linearly phase shifted through the filter as long as f

≤

fC; fC = cutoff frequency.

Figure 1 curve shows the typical phase response of an LTC1064-7 operating at fCLK =

1MHz, ratio = 50:1, fC = 20kHz and it closely matches an ideal straight line. The phase

shift is described by: phase shift = 180

° – F (f/fC); f ≤ fC.

F is arbitrarily called the “phase factor” expressed in degrees. The phase factor allows

the calculation of the phase at a given frequency. Example: The phase shift at 14kHz of

the LTC1064-7 shown in Figure 1 is:

phase shift = 180

° – 430° (14kHz/20kHz) ± nonlinearity = –121° ± 1% or

–121

°± 1.20°.

Note 2: Group delay and group delay deviation are calculated from the measured phase

factor and phase deviation specifications.

Note 3: Phase deviation and group delay deviation for LTC1064-7MJ is

±4%.

Note 4: The filter cutoff frequency is abbreviated as fCUTOFF or fC.

Note 5: The AC swing is typically 11VP-P, 7VP-P, 2.8VP-P, with ±7.5V, ±5V, ±2.5V

Supply respectively. For more information refer to the THD + Noise vs Input graphs.

LTC1064-7CS датащи(PDF) 3 Page - Linear Technology

LTC1064-7CS датащи(HTML) 3 Page - Linear Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12

датащи скачать

ссылки URL