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MAX7490 Datasheet(数据表) 5 Page - Maxim Integrated Products

部件型号  MAX7490
说明  Dual Universal Switched-Capacitor Filters
下载  18 Pages
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制造商  MAXIM [Maxim Integrated Products]
网页  https://www.maximintegrated.com/en.html
标志 MAXIM - Maxim Integrated Products

MAX7490 Datasheet(HTML) 5 Page - Maxim Integrated Products

  MAX7490 数据表 HTML 1Page - Maxim Integrated Products MAX7490 数据表 HTML 2Page - Maxim Integrated Products MAX7490 数据表 HTML 3Page - Maxim Integrated Products MAX7490 数据表 HTML 4Page - Maxim Integrated Products MAX7490 数据表 HTML 5Page - Maxim Integrated Products MAX7490 数据表 HTML 6Page - Maxim Integrated Products MAX7490 数据表 HTML 7Page - Maxim Integrated Products MAX7490 数据表 HTML 8Page - Maxim Integrated Products MAX7490 数据表 HTML 9Page - Maxim Integrated Products Next Button
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Dual Universal Switched-Capacitor Filters
_______________________________________________________________________________________
5
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
POWER REQUIREMENTS
Supply Voltage
VDD
2.7
3.6
V
Power-Supply Current
IDD
No load, mode 1, R1 = R3 = 50k
Ω,
R2 = 10k
Ω, Q = 5
3.5
4.0
mA
Shutdown Current
ISHDN
SHDN = GND
1
µA
INTERNAL OP AMPS CHARACTERISTICS
Output Short-Circuit Current
±11
mA
DC Open-Loop Gain
RL
≥ 10kΩ, CL ≤ 50pF
130
dB
Gain Bandwidth Product
GBW
RL
≥ 10kΩ, CL ≤ 50pF
7
MHz
Slew Rate
SR
RL
≥ 10kΩ, CL ≤ 50pF
6
V/
µs
Note 1: Resistive loading of the N_/HP_, LP_, BP_ outputs includes the resistors used for the filter implementation.
Note 2: Crosstalk between internal filter sections is measured by applying a 1VRMS 10kHz signal to one bandpass filter section input
and grounding the input of the other bandpass filter section. The crosstalk is the ratio between the output of the grounded
filter section and the 1VRMS input signal of the other section.
Note 3: Bandwidth of noise measurement is 80kHz.
Note 4: fOSC (kHz) = 135 x 103 / COSC (COSC in pF)
ELECTRICAL CHARACTERISTICS—MAX7491 (continued)
(VDD = EXTCLK = +3V, fCLK = 625kHz, TA = TMIN to TMAX, 10k
Ω || 50pF load to VDD/2 at LP_, BP_, and N_/HP_, SHDN = VDD, 0.1µF
from COM to GND, 50% duty-cycle clock input, COM = VDD/2. Typical values are at TA = +25°C, unless otherwise noted.) (Note 1)
Typical Operating Characteristics
(VDD = +5V for MAX7490, VDD = +3V for MAX7491, fCLK = 625kHz, SHDN = EXTCLK = VDD, COM = VDD/2, Mode 1, R3 = R1 = 50k
Ω,
R2 = 10k
Ω, Q = 5, TA = +25°C, unless otherwise noted.)
10
-60
110
100
2ND-ORDER BANDPASS FILTER
FREQUENCY RESPONSE
-50
FREQUENCY (kHz)
-30
-40
-10
-20
0
300
0
1
10
100
2ND-ORDER BANDPASS FILTER
PHASE RESPONSE
50
FREQUENCY (kHz)
100
200
150
250
VDD = +5V
fCLK = 625kHz
Q = 5
0
-0.8
100
1000
10,000
fCLK/fO DEVIATION vs. fCLK
-0.7
fCLK (kHz)
-0.6
-0.2
-0.3
-0.4
-0.5
-0.1
VDD = 5V
VDD = 3V




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