LTC1064-7M 데이터 시트보기 (PDF) - Linear Technology
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LTC1064-7M Datasheet PDF : 12 Pages
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LTC1064-7
ELECTRICAL CHARACTERISTICS
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.
PARAMETER
Group Delay (td)
td = (F /360)(1/ fC)
(Note 2)
Group Delay Deviation
(Notes 2, 3)
Input Frequency Range (Table 9)
Maximum fCLK
Clock Feedthrough (f ≥ fCLK)
Wideband Noise
(1Hz ≤ f ≤ fCLK)
Input Impedance
Output DC Voltage Swing
(Note 5)
Output DC Offset
Output DC Offset TempCo
Power Supply Current
Power Supply Range
CONDITIONS
(fCLK/fC) = 50:1, f ≤ fCUTOFF
(fCLK/fC) = 100:1, f ≤ fCUTOFF
(fCLK/fC) = 50:1, f ≤ fCUTOFF
(fCLK/fC) = 100:1, f ≤ fCUTOFF
(fCLK/fC) = 50:1, f ≤ fCUTOFF
(fCLK/fC) = 100:1, f ≤ fCUTOFF
(fCLK/fC) = 50:1, f ≤ fCUTOFF
(fCLK/fC) = 100:1, f ≤ fCUTOFF
(fCLK/fC) = 50:1
(fCLK/fC) = 100:1
VS = 5V (AGND = 2V)
VS = ±5V
VS = ±7.5V
50:1
VS = ±2.5V
VS = ±5V
VS = ±7.5V
VS = ±2.375V
VS = ±5V
VS = ±7.5V
50:1, VS = ±5V
100:1, VS = ±5V
50:1, VS = ±5V
100:1, VS = ±5V
VS = ±2.375V, TA = 25°C
VS = ±5V, TA = 25°C
VS = ±7.5V, TA = 25°C
MIN
TYP
MAX
UNITS
59.7 ± 0.5
µs
117.0 ± 1.0
µs
q
58.6
59.7
60.7
µs
q
115.0 117.0 119.0
µs
±1.0
%
±1.0
%
q
± 2.0
%
q
± 2.0
%
< fCLK
kHz
< fCLK / 2
kHz
2.0
MHz
3.5
MHz
5.0
MHz
200
95 ± 5%
105 ± 5%
115 ± 5%
25
40
70
µVRMS
µVRMS
µVRMS
µVRMS
kΩ
±1.0
±1.2
V
q
±2.1
±3.2
V
q
±3.0
±5.0
V
±150
±220
mV
±150
mV
±200
±200
µV/°C
µV/°C
11
22
mA
q
22
mA
14
26
mA
q
28
mA
17
28
mA
q
32
mA
± 2.375
±8
V
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.
180
fCLK = 1MHz
RATIO = 50:1
90
0
– 90
–180
–270
–360
02 4
6 8 10 12 14 16 18 20
FREQUENCY (kHz)
1164-7 F01
Figure 1. Phase Response in the Passband (Note 1)
3
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