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MAX7401 PDF даташит

Спецификация MAX7401 изготовлена ​​​​«Maxim Integrated» и имеет функцию, называемую «8th-Order / Lowpass / Bessel / Switched-Capacitor Filters».

Детали детали

Номер произв MAX7401
Описание 8th-Order / Lowpass / Bessel / Switched-Capacitor Filters
Производители Maxim Integrated
логотип Maxim Integrated логотип 

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MAX7401 Даташит, Описание, Даташиты
19-4788; Rev 1; 6/99
8th-Order, Lowpass, Bessel,
Switched-Capacitor Filters
General Description
The MAX7401/MAX7405 8th-order, lowpass, Bessel,
switched-capacitor filters (SCFs) operate from a single
+5V (MAX7401) or +3V (MAX7405) supply. These
devices draw only 2mA of supply current and allow cor-
ner frequencies from 1Hz to 5kHz, making them ideal
for low-power post-DAC filtering and anti-aliasing appli-
cations. They feature a shutdown mode that reduces
supply current to 0.2µA.
Two clocking options are available on these devices:
self-clocking (through the use of an external capacitor)
or external clocking for tighter corner-frequency control.
An offset adjust pin allows for adjustment of the DC out-
put level.
The MAX7401/MAX7405 Bessel filters provide low over-
shoot and fast settling. Their fixed response simplifies
the design task to selecting a clock frequency.
ADC Anti-Aliasing
Post-DAC Filtering
Air-Bag Electronics
Applications
CT2 Base Stations
Speech Processing
TOP VIEW
Pin Configuration
Features
o 8th-Order, Lowpass Bessel Filters
o Low Noise and Distortion: -82dB THD + Noise
o Clock-Tunable Corner Frequency (1Hz to 5kHz)
o 100:1 Clock-to-Corner Ratio
o Single-Supply Operation
+5V (MAX7401)
+3V (MAX7405)
o Low Power
2mA (Operating Mode)
0.2µA (Shutdown Mode)
o Available in 8-Pin SO/DIP Packages
o Low Output Offset: ±5mV
PART
MAX7401CSA
MAX7401CPA
MAX7401ESA
MAX7401EPA
MAX7405CSA
MAX7405CPA
MAX7405ESA
MAX7405EPA
Ordering Information
TEMP. RANGE
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
8 SO
8 Plastic DIP
8 SO
8 Plastic DIP
8 SO
8 Plastic DIP
8 SO
8 Plastic DIP
COM 1
IN 2
GND 3
VDD 4
MAX7401
MAX7405
8 CLK
7 SHDN
6 OS
5 OUT
SO/DIP
Typical Operating Circuit
VSUPPLY
0.1µF
INPUT
CLOCK
VDD SHDN
IN OUT
MAX7401
MAX7405
CLK COM
OS
GND
OUTPUT
0.1µF
________________________________________________________________ Maxim Integrated Products 1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.









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MAX7401 Даташит, Описание, Даташиты
8th-Order, Lowpass, Bessel,
Switched-Capacitor Filters
ABSOLUTE MAXIMUM RATINGS
VDD to GND
MAX7401 ..............................................................-0.3V to +6V
MAX7405 ..............................................................-0.3V to +4V
IN, OUT, COM, OS, CLK ...........................-0.3V to (VDD + 0.3V)
SHDN........................................................................-0.3V to +6V
OUT Short-Circuit Duration...................................................1sec
Continuous Power Dissipation (TA = +70°C)
8-Pin SO (derate 5.88mW/°C above +70°C)................471mW
8-Pin DIP (derate 9.09mW/°C above +70°C) ...............727mW
Operating Temperature Ranges
MAX740 _C_A ....................................................0°C to +70°C
MAX740 _E_A .................................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10sec) .............................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS—MAX7401
(VDD = +5V, filter output measured at OUT, 10k|| 50pF load to GND at OUT, OS = COM, 0.1µF from COM to GND,
SHDN = VDD, fCLK = 100kHz, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
FILTER CHARACTERISTICS
Corner Frequency
Clock-to-Corner Ratio
Clock-to-Corner Tempco
fC (Note 1)
fCLK / fC
0.001 to 5
100:1
10
kHz
ppm/°C
Output Voltage Range
Output Offset Voltage
VOFFSET VIN = VCOM = VDD / 2
0.25
VDD - 0.25
±5 ±25
V
mV
DC Insertion Gain with
Output Offset Removed
VCOM = VDD / 2 (Note 2)
-0.1 0.15 0.3
dB
Total Harmonic Distortion
plus Noise
THD+N
fIN = 200Hz, VIN = 4Vp-p,
measurement bandwidth = 22kHz
-82 dB
OS Voltage Gain to OUT
Input Voltage Range at OS
COM Voltage Range
Input Resistance at COM
Clock Feedthrough
Resistive Output Load Drive
Maximum Capacitive Load at
OUT
Input Leakage Current at COM
Input Leakage Current at OS
CLOCK
Internal Oscillator Frequency
Clock Input Current
Clock Input High
Clock Input Low
AOS
VOS
VCOM
RCOM
Input, COM externally driven
Output, COM internally biased
RL
CL
SHDN = GND, VCOM = 0 to VDD
VOS = 0 to (VDD - 1V) (Note 3)
fOSC
ICLK
VIH
VIL
COSC = 1000pF (Note 4)
VCLK = 0 or 5V
1
VCOM ±0.1
VDD / 2
- 0.5
VDD / 2
VDD / 2
+ 0.5
VDD / 2
- 0.2
VDD / 2
VDD / 2
+ 0.2
75 125
10
10 1
V/ V
V
V
k
mVp-p
k
50 500
pF
±0.1
±0.1
±10
±10
µA
µA
29 38 48 kHz
±15 ±30
µA
VDD - 0.5
V
0.5 V
2 _______________________________________________________________________________________









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MAX7401 Даташит, Описание, Даташиты
8th-Order, Lowpass, Bessel,
Switched-Capacitor Filters
ELECTRICAL CHARACTERISTICS—MAX7401 (continued)
(VDD = +5V, filter output measured at OUT, 10k|| 50pF load to GND at OUT, OS = COM, 0.1µF from COM to GND,
SHDN = VDD, fCLK = 100kHz, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
POWER REQUIREMENTS
Supply Voltage
Supply Current
Shutdown Current
Power-Supply Rejection Ratio
VDD
IDD
I SHDN
PSRR
Operating mode, no load, IN = OS = COM
SHDN = GND, CLK driven from 0 to VDD
Measured at DC
4.5 5.5 V
2 3.5 mA
0.2 1 µA
60 dB
SHUTDOWN
SHDN Input High
SHDN Input Low
SHDN Input Leakage Current
VSDH
VSDL
V SHDN = 0 to VDD
VDD - 0.5
±0.1
0.5
±10
V
V
µA
ELECTRICAL CHARACTERISTICS—MAX7405
(VDD = +3V, filter output measured at OUT, 10k|| 50pF load to GND at OUT, OS = COM, 0.1µF from COM to GND,
SHDN = VDD, fCLK = 100kHz, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
FILTER CHARACTERISTICS
Corner Frequency
Clock-to-Corner Ratio
Clock-to-Corner Tempco
fC
fCLK/fC
(Note 1)
0.001 to 5
100:1
10
kHz
ppm/°C
Output Voltage Range
Output Offset Voltage
VOFFSET VIN = VCOM = VDD / 2
0.25
VDD - 0.25
±5 ±25
V
mV
DC Insertion Gain with
Output Offset Removed
VCOM = VDD / 2 (Note 2)
-0.1 0.03 0.3
dB
Total Harmonic Distortion
plus Noise
OS Voltage Gain to OUT
Input Voltage Range at OS
COM Voltage Range
Input Resistance at COM
Clock Feedthrough
Resistance Output Load Drive
Maximum Capacitive
Load at OUT
Input Leakage Current at COM
Input Leakage Current at OS
THD+N
AOS
VOS
fIN = 200Hz, VIN = 2.5Vp-p,
measurement bandwidth = 22kHz
VCOM COM internally biased or externally driven
RCOM
RL
CL
SHDN = GND, VCOM = 0 to VDD
VOS = 0 to (VDD - 1V) (Note 3)
-84 dB
1
VCOM ±0.1
VDD / 2
- 0.1
VDD / 2
VDD / 2
+ 0.1
75 125
10
10 1
V/ V
V
V
k
mVp-p
k
50 500
pF
±0.1
±0.1
±10
±10
µA
µA
_______________________________________________________________________________________ 3










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