LTC1164-7
The
●
denotes the specifications which apply over the full operating
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T = 25°C. V = ± 7.5V, R = 10k, f = 8kHz or 4kHz, f = 400kHz, TTL or CMOS
A
S
L
CUTOFF
CLK
level and all gain measurements are referenced to passband gain, unless otherwise specified. (Maximum clock rise or fall time ≤ 1µs.)
The filter cutoff frequency is abbreviated as f
or f .
C
CUTOFF
CONDITIONS
(f /f ) = 50:1, f ≥ f
CUTOFF
PARAMETER
MIN
TYP
MAX
UNITS
Group Delay (t )
151.0 ± 1
297.2 ± 1
µs
µs
µs
µs
d
CLK
C
t = (1/360)(f/f )
(f /f ) = 100:1, f ≥ f
d
C
CLK C
CUTOFF
(Note 3)
(f /f ) = 50:1, f ≥ f
●
●
149.3
293.8
153.5
301.4
CLK
C
CUTOFF
(f /f ) = 100:1, f ≥ f
CLK
C
CUTOFF
Group Delay Deviation
(Note 3)
(f /f ) = 50:1, f ≥ f
±1.0
±1.0
%
%
%
%
CLK
C
CUTOFF
(f /f ) = 100:1, f ≥ f
CLK
C
CUTOFF
(f /f ) = 50:1, f ≥ f
●
●
± 2.0
± 2.5
CLK
C
CUTOFF
(f /f ) = 100:1, f ≥ f
CLK
C
CUTOFF
Input Frequency Range (Table 9)
(f /f ) = 50:1
<f
CLK
<f /2
CLK
kHz
kHz
CLK
C
(f /f ) = 100:1
CLK
C
Maximum f
V = Single 5V (Pins 3 and 5 at 2V)
1
1
1
MHz
MHz
MHz
CLK
S
V = ±5V
S
V = ± 7.5V
S
Clock Feedthrough (f = f
Wideband Noise
)
CLK
50:1, ± 5V, Input at GND
100
µV
RMS
V = ±2.5V
95 ± 5%
105 ± 5%
115 ± 5%
µV
µV
µV
S
RMS
RMS
RMS
kΩ
(1Hz ≤ f < f
)
CLK
V = ±5V
S
V = ± 7.5V
S
Input Impedance
35
55
90
Output DC Voltage Swing (Note 4)
V = ±2.375V
S
V = ±7.5V
S
±1.25
±3.70
±5.40
±1.4
±3.9
±6.1
V
V
V
S
V = ±5V
●
●
Output DC Offset
50:1, V = ± 5V
±100
±100
±220
mV
mV
S
100:1, V = ±5V
S
Output DC Offset TempCo
Power Supply Current
50:1, V = ± 5V
±200
±200
2.5
4.5
7.0
µV/°C
µV/°C
S
100:1, V = ±5V
S
V = ± 2.375V, T = 25°C
S
4.0
4.5
7.0
8.0
11.0
12.5
mA
mA
mA
mA
mA
mA
A
●
●
●
V = ± 5V, T = 25°C
S
A
V = ± 7.5V, T = 25°C
S
A
Power Supply Range
± 2.375
±8
V
Note 1: Absolute Maximum Ratings are those values beyond which the life of a
device may be impaired.
Note 2: Input frequencies, f, are linearly phase shifted through the filter as long as
180
90
f
= 500kHz
CLK
(f /f ) = 50:1
CLK
C
f ≤ f ; f = cutoff frequency.
C
C
0
Figure 1 curve shows the typical phase response of an LTC1164-7 operating at
= 400kHz, f = 8kHz and it closely matches an ideal straight line. The phase
f
CLK
C
–90
shift is described by: phase shift = 180° – F (f/f ); f ≤ f .
C
C
F is arbitrarily called the “phase factor” expressed in degrees. The phase factor
together with the specified deviation from the ideal straight line allows the
calculation of the phase at a given frequency. Example: The phase shift at 7kHz of
the LTC1164-7 shown in Figure 1 is: phase shift = 180° – 434° (7kHz/10kHz) ±
nonlinearity = –123.8° ± 1% or –123.9° ± 1.24°.
–180
–270
–360
0
1
2
3
4
5
6
7
8
9
10
Note 3: Group delay and group delay deviation are calculated from the measured
FREQUENCY (kHz)
phase factor and phase deviation specifications.
1164-7 F01
Note 4: The AC swing is typically 11V , 7V , 2.8V for ± 7.5V, ± 5V, ± 2.5V
P-P
P-P
P-P
Figure 1. Phase Response in the Passband (Note 1)
supply respectively. For more information refer to the THD + Noise vs Input graphs.
11647fb
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