参数资料
型号: MAX7490CEE+T
厂商: Maxim Integrated Products
文件页数: 13/18页
文件大小: 0K
描述: IC FILTER SW CAP DUAL 16-QSOP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
滤波器类型: 通用开关电容器
频率 - 截止或中心: 40kHz
滤波器数: 2
滤波器阶数: 2nd
电源电压: 4.5 V ~ 5.5 V
安装类型: 表面贴装
封装/外壳: 16-SSOP(0.154",3.90mm 宽)
供应商设备封装: 16-QSOP
包装: 带卷 (TR)
MAX7490/MAX7491
Dual Universal Switched-Capacitor Filters
4
_______________________________________________________________________________________
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
FILTER
Center Frequency Range
fO
Mode 1
0.001 to
40
kHz
Clock-to-Center Frequency
Accuracy
fCLK/fO
Mode 1, R1 = R3 = 50k
Ω , R2 = 10kΩ,
Q = 5, deviation from 100:1
±0.2
±0.7
%
Q Accuracy
Mode 1, R1 = R3 = 50k
Ω, R2 = 10kΩ,
Q = 5
±0.2
±2%
fO Temperature Coefficient
±1
ppm/
°C
Q Temperature Coefficient
±5
ppm/
°C
DC Lowpass Gain Accuracy
Mode 1, R1 = R2 = 10k
Ω±0.1
±0.5
%
VOS1
DC offset of input inverter
±3
±12.5
VOS2
DC offset of 1st integrator
±4
±15
DC Offset Voltage
(Figure 8)
VOS3
DC offset of 2nd integrator
±4
±25
mV
Crosstalk (Note 2)
fIN = 10kHz
-60
dB
Input: COM externally driven
VDD/2
- 0.1
VDD/2
+ 0.1
COM Voltage Range
VCOM
Output: COM internally driven
VDD/2
- 0.1
VDD/2
+ 0.1
V
Input Resistance at COM
RCOM
60
80
120
k
Ω
Clock Feedthrough
Up to 5th harmonic of fCLK
200
μVRMS
Noise (Note 3)
Mode 1, R1= R2 = R3 = 10k
Ω,
LP output, Q = 1
60
μVRMS
Output Voltage Swing
0.2
VDD - 0.2
V
Input Leakage Current at COM
SHDN = GND, VCOM = 0 to VDD
±0.1
±10
μA
CLOCK
Maximum Clock Frequency
fCLK
4
MHz
EXTCLK = GND, COSC = 1000pF
95
135
175
kHz
Internal Oscillator Frequency
(Note 4)
fOSC
EXTCLK = GND, COSC = 100pF
1.35
MHz
Clock Input High
VDD - 0.5
V
Clock Input Low
0.5
V
Clock Duty Cycle
50
±5%
SHDN AND EXTCLK
Input High
VIH
VDD - 0.5
V
Input Low
VIL
0.5
V
Input Leakage Current
VINPUT = 0 to VDD
±0.4
±10
μA
ELECTRICAL CHARACTERISTICS—MAX7491
(VDD = VEXTCLK = +3V; fCLK = 625kHz; 10kΩ || 50pF load to VDD/2 at LP_, BP_, and N_/HP_; VSHDN = VDD; 0.1F from COM to
GND; 50% duty-cycle clock input; COM = VDD/2; TA = TMIN to TMAX. Typical values are at TA = +25°C, unless otherwise noted.)
(Note 1)
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