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LTC1069-7C 数据表(PDF) 3 Page - Linear Technology

部件名 LTC1069-7C
功能描述  Linear Phase 8th Order Lowpass Filter
PDF  8 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC1069-7C 数据表(HTML) 3 Page - Linear Technology

  LTC1069-7C Datasheet HTML 1Page - Linear Technology LTC1069-7C Datasheet HTML 2Page - Linear Technology LTC1069-7C Datasheet HTML 3Page - Linear Technology LTC1069-7C Datasheet HTML 4Page - Linear Technology LTC1069-7C Datasheet HTML 5Page - Linear Technology LTC1069-7C Datasheet HTML 6Page - Linear Technology LTC1069-7C Datasheet HTML 7Page - Linear Technology LTC1069-7C Datasheet HTML 8Page - Linear Technology  
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LTC1069-7
ELECTRICAL CHARACTERISTICS
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.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Gain at 5.0fCUTOFF
VS = 4.75V, fCLK = 500kHz
– 70
–59
– 55
dB
fTEST = 100kHz, VIN = 0.5VRMS
Gain at fCUTOFF (160kHz)
VS = ±5V, fCLK = 4MHz
– 2.1
dB
fTEST = 160kHz, VIN = 1VRMS
Phase at 0.5fCUTOFF
VS = ±5V, fCLK = 2.5MHz
– 35
– 30.5
– 25
Deg
fTEST = 50kHz
Phase at fCUTOFF
VS = ±5V, fCLK = 2.5MHz
– 240
– 235
– 230
Deg
fTEST = 100kHz
Passband Phase Deviation from
VS = ±5V, fCLK = 500kHz
– 3.0
Deg
Linear Phase (Note 1)
Output DC Offset (Input at GND)
VS = ±5V, fCLK = 500kHz
50
mV
VS = 4.75V, fCLK = 400kHz
25
125
mV
Output Voltage Swing
VS = ±5V, ISOURCE/ISINK ≤ 1mA, RL = 10k
q
±3.5
±4.0
V
VS = 4.75V, ISOURCE/ISINK ≤ 1mA, RL = 10k
q
2.6
3.6
VP-P
Power Supply Current
VS = ±5V, fCLK = 500kHz
18
26
mA
q
29
mA
VS = 4.75V, fCLK = 400kHz
13
15
mA
q
16.5
mA
The q denotes specifications which apply over the full operating
temperature range.
Note 1: Phase Deviation = 1/2(Phase at 0Hz – Phase at fCUTOFF) – (Phase
at 0Hz – Phase at 0.5fCUTOFF)
Phase at 0Hz = 180
° (guaranteed by design)
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°
TYPICAL PERFORMANCE CHARACTERISTICS
Passband Gain vs Frequency
FREQUENCY (kHz)
1
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
–3.5
–4.0
17
LTC1069-7 • TPC01
5
3
7
11
15
19
9
13
21
VS = ±5V
fCLK = 500kHz
fC = 20kHz
VIN = 2VRMS
FREQUENCY (kHz)
41
–40
–42
–44
–46
–48
–50
–52
–54
–56
–58
–60
73
LTC1069-7 • TPC03
49
45
53
61
69
77
57
65
81
VS = ±5V
fCLK = 500kHz
fC = 20kHz
VIN = 2VRMS
Stopband Gain vs Frequency
FREQUENCY (kHz)
10
0
–10
–20
–30
–40
–50
25
29
33
37
LTC1069-7 • TPC02
41
23
21
27
31
35
39
VS = ±5V
fCLK = 500kHz
fC = 20kHz
VIN = 2VRMS
Transition Band Gain vs Frequency



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