LTC1069-7

3

10697fa

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.

Note 2: Phase Deviation = 1/2(Phase at 0Hz – Phase at fCUTOFF) – (Phase

at 0Hz – Phase at 0.5fCUTOFF)

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

ELECTRICAL CHARACTERISTICS The l denotes specifications which apply over the full operating

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

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

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Gain at 1.5fCUTOFF

VS = ± 5V, fCLK = 2.5MHz

fTEST = 150kHz, VIN = 1VRMS

–19

–16.5

–14

dB

dB

VS = 4.75V, fCLK = 500kHz

fTEST = 30kHz, VIN = 0.5VRMS

–20

–18.1

–17

dB

dB

Gain at 2.0fCUTOFF

VS = ± 5V, fCLK = 2.5MHz

fTEST = 200kHz, VIN = 1VRMS

–55

–43

–38

dB

dB

VS = 4.75V, fCLK = 500kHz

fTEST = 40kHz, VIN = 0.5VRMS

–48

–41

–39

dB

dB

Gain at 5.0fCUTOFF

VS = 4.75V, fCLK = 500kHz

fTEST = 100kHz, VIN = 0.5VRMS

–70

–59

–55

dB

Gain at fCUTOFF (160kHz)

VS = ±5V, fCLK = 4MHz

fTEST = 160kHz, VIN = 1VRMS

–2.1

dB

Phase at 0.5fCUTOFF

VS = ±5V, fCLK = 2.5MHz

fTEST = 50kHz

–35

–30.5

–25

Deg

Phase at fCUTOFF

VS = ±5V, fCLK = 2.5MHz

fTEST = 100kHz

–240

–235

–230

Deg

Passband Phase Deviation from

Linear Phase (Note 1)

VS = ±5V, fCLK = 500kHz

–3.0

Deg

Output DC Offset (Input at GND)

VS = ±5V, fCLK = 500kHz

VS = 4.75V, fCLK = 400kHz

50

25

125

mV

mV

Output Voltage Swing

VS = ±5V, ISOURCE/ISINK ≤ 1mA, RL = 10k

VS = 4.75V, ISOURCE/ISINK ≤ 1mA, RL = 10k

l

l

±3.5

2.6

±4.0

3.6

V

VP-P

Power Supply Current

VS = ± 5V, fCLK = 500kHz

l

18

26

29

mA

mA

VS = 4.75V, fCLK = 400kHz

l

13

15

16.5

mA

mA

Example: An LTC1069-7 has Phase at 0.5fCUTOFF = – 30.5° and Phase at

fCUTOFF = –235°.

Passband Phase Deviation from Linear Phase

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