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LTC1069-7 データシート(PDF) 3 Page - Linear Technology

部品番号 LTC1069-7
部品情報  Linear Phase 8th Order Lowpass Filter
PDF  10 Pages
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メーカー  LINER [Linear Technology]
ホームページ  http://www.linear.com
Logo LINER - Linear Technology

LTC1069-7 データシート(HTML) 3 Page - Linear Technology

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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°



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