参数资料
型号: MAX271CWG+
厂商: Maxim Integrated Products
文件页数: 12/16页
文件大小: 0K
描述: IC FILTER LOWPASS PROG 24-SOIC
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 30
滤波器类型: 连续时间低通
频率 - 截止或中心: 25kHz
滤波器数: 2
滤波器阶数: 2nd
电源电压: 4.74 V ~ 16 V,±2.37 V ~ 8 V
安装类型: 表面贴装
封装/外壳: 24-SOIC(0.295",7.50mm 宽)
供应商设备封装: 24-SOIC W
包装: 管件
5
Maxim Integrated
Digitally-Programmed, Dual
2nd-Order Continuous Lowpass Filter
MAX270/MAX271
Typical Operating Characteristics (continued)
MAX270
toc07
fIN/fC
GAIN
(dB)
0.1
-1.5
-0.5
-3.5
-2.5
-5.5
-4.5
-7.5
-6.5
+0.5
0.01
1.0
CASCADED FILTER GAIN vs. FREQUENCY
(NORMALIZED TO CUTOFF FREQUENCY)
V+ = +5V
V- = -5V
fC (FILTER A) = fC (FILTER B) =
0-127 (1-25kHz TYP)
FILTERS A AND B CASCADED
FIGURE 5
TA = +25C
MAX270
toc08
fIN/fC
GAIN
(dB)
1.0
-80
-20
-40
-60
0
0.01
10
CASCADED FILTER GAIN vs. FREQUENCY
(NORMALIZED TO CUTOFF FREQUENCY)
V+ = +5V
V- = -5V
fC (FILTER A) = fC (FILTER B) =
0-127 (1-25kHz TYP)
FILTERS A AND B CASCADED
FIGURE 5
TA = +25C
MAX270
toc09
F (Hz)
GAIN
(dB)
1k
2k
3k
-120
-20
-40
-100
-80
-60
0
04k
FILTER HARMONIC DISTORTION
V+ = +5V
V- = -5V
fC CODE = 44 (2.01kHz TYP)
fTEST = 390.625Hz
TA = +25C
VIN = 3.5VP-P
MAX270
toc10
V+ = 5V, V- = -5V; VIN = 3.5VP-P; TA = +25C
FILTER TOTAL HARMONIC DISTORTION
PLUS NOISE vs.INPUT FREQUENCY
fIN
(Hz)
fC
CODE
fC
(Hz)
(TYP)
THD PLUS
NOISE
(TYP)
190
01k
-78
390
1367
4875
44
100
127
2.01k
7.01k
25k
-73
-67
-66
MAX270
toc11
VIN (VP-P)
GAIN
(dB)
1.0
-85
-60
-65
-70
-75
-80
0.2
8.0
FILTER TOTAL HARMONIC DISTORTION
PLUS NOISE vs. INPUT AMPLITUDE
V+ = +5V
V- = -5V
fIN = 390.625Hz
fC CODE = 44 (2.01kHz TYP)
TA = +25C
MAX270
toc14
MAX271 FILTER PLUS TRACK-AND-HOLD
SPURIOUS-FREE DYNAMIC RANGE
vs. SAMPLING FREQUENCY
fSAMPLE
(Hz)
100k
200k
500k
fIN
(Hz)
781
1562
3906
fC
CODE
72
105
124
SFDR
(dB)
72
64
fC
(Hz)
4.01k
8.08k
19.4k
V+ = 5V, V- = -5V; VIN = 3.5VP-P;
T/H SWITCHED AT 50kHz, 50% DUTY CYCLE; TA = +25C
MAX270
toc13
VIN (VP-P)
SFDR
(dB)
1.0
-85
55
65
75
0.5
8.0
MAX271 FILTER PLUS TRACK-AND-HOLD
SPURIOUS-FREE DYNAMIC RANGE
vs. INPUT AMPLITUDE
V+ = +5V
V- = -5V
fIN = 390Hz
fC CODE = 44 (2.01kHz TYP)
TA = +25C
MAX270
toc12
MAX271 FILTER PLUS TRACK-AND-HOLD
SPURIOUS-FREE DYNAMIC RANGE
vs. INPUT FREQUENCY
fIN
(Hz)
fC
CODE
fC
(Hz)
(TYP)
SFDR
(dB)
195
01k
73.5
781
1562.5
3906
72
105
124
4.01k
8.08k
19.4k
69.5
66
61.5
V+ = 5V, V- = -5V; VIN = 3.5VP-P;
T/H SWITCHED AT 50kHz, 50% DUTY CYCLE; TA = +25C
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