參數(shù)資料
型號(hào)： MAX745EVKIT
廠商： Maxim Integrated Products, Inc.
英文描述： Evaluation Kit for the MAX745
中文描述： 評(píng)估板MAX745
文件頁(yè)數(shù)： 5/12頁(yè)
文件大小： 231K
代理商： MAX745EVKIT
8th-Order, Lowpass, Elliptic ,
S witc hed-Capac itor Filters
_______________________________________________________________________________________
5
Note 1:
The maximum f
C
is defined as the clock frequency, f
CLK
= 100
·
f
C
, at which the peak SINAD drops to 68dB with a
sinusoidal input at 0.2f
C
.
Note 2:
DC insertion gain is defined as
V
OUT
/
V
IN
.
Note 3:
OS voltages above V
DD
- 1V saturate the input and result in a 75μA typical input leakage current.
Note 4:
For MAX7400/MAX7403, f
OSC
(kHz)
38
·
10
3
/ C
OSC
(pF). For MAX7404/MAX7407, f
OSC
(kHz)
34
·
10
3
/ C
OSC
(pF).
Note 5:
The input frequencies, f
IN
, are selected at the peaks and troughs of the frequency responses.
ELLIPTIC (r = 1.2) FILTER CHARACTERISTICS—MAX7403/MAX7407
(V
DD
= +5V for MAX7403, V
DD
= +3V for MAX7407; filter output measured at OUT; 10k
||
50pF load to GND at OUT;
SHDN
= V
DD
;
V
COM
= V
OS
= V
DD
/ 2; f
CLK
= 100kHz; T
A
= T
MIN
to T
MAX
; unless otherwise noted. Typical values are at T
A
= +25°C.)
Typic al Operating Charac teristic s
(V
DD
= +5V for MAX7400/MAX7403, V
DD
= +3V for MAX7404/MAX7407; V
COM
= V
OS
= V
DD
/ 2;
SHDN
= V
DD
; f
CLK
= 100kHz;
T
A
= +25°C; unless otherwise noted.)
-120
-80
-100
-40
-60
0
-20
20
0
1
2
3
4
5
MAX7400/MAX7404 (r = 1.5)
FREQUENCY RESPONSE
M
INPUT FREQUENCY (kHz)
G
f
C
= 1kHz
-0.08
0
-0.04
0.12
0.08
0.04
0.20
0.16
0.24
0
202
404
606
808
1010
MAX7400/MAX7404 (r = 1.5)
PASSBAND FREQUENCY RESPONSE
M
INPUT FREQUENCY (Hz)
G
f
C
= 1kHz
-640
-480
-560
-240
-320
-400
-80
-160
0
0
300
600
900
1200
1500
MAX7400/MAX7404 (r = 1.5)
PHASE RESPONSE
M
INPUT FREQUENCY (Hz)
P
f
C
= 1kHz
PARAMETER
MIN
-0.20
TYP
-0.11
MAX
0.20
UNITS
-58
-59
-50
-54
-60
-60
-54
-54
Insertion Gain Relative to DC Gain
(Note 5)
f
IN
= 1.533f
C
f
IN
= 2.875f
C
dB
f
IN
= 1.200f
C
f
IN
= 1.261f
C
-0.20
-0.20
0.10
0.02
0.20
0.20
-0.20
-0.20
0.14
0.09
0.30
0.30
CONDITIONS
f
IN
= 0.992f
C
f
IN
= 1.000f
C
f
IN
= 0.902f
C
f
IN
= 0.956f
C
-0.20
-0.20
0.02
-0.06
0.20
0.20
f
IN
= 0.640f
C
f
IN
= 0.784f
C
f
IN
= 0.408f
C
M
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