MAX295CSA+ Maxim Integrated Products, MAX295CSA+ Datasheet

IC FILTER LOWPASS 8-SOIC

MAX295CSA+

Manufacturer Part Number
MAX295CSA+
Description
IC FILTER LOWPASS 8-SOIC
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX291CSA.pdf (10 pages)

Specifications of MAX295CSA+

Filter Type
Butterworth, Lowpass Switched Capacitor
Frequency - Cutoff Or Center
25kHz
Number Of Filters
1
Max-order
8th
Voltage - Supply
4.75 V ~ 11 V, ±2.375 V ~ 5.5 V
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Number Of Channels
Single
Cutoff Frequency
50 KHz
Supply Voltage (max)
11 V
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Mounting Style
SMD/SMT
Supply Voltage (min)
4.75 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX291/MAX292/MAX295/MAX296 are easy-to-use,
8th-order, lowpass, switched-capacitor filters that can be
set up with corner frequencies from 0.1Hz to 25kHz
(MAX291/MAX292) or 0.1Hz to 50kHz (MAX295/MAX296).
The MAX291/MAX295 Butterworth filters provide maxi-
mally flat passband response, and the MAX292/MAX296
Bessel filters provide low overshoot and fast settling. All
four filters have fixed responses, so the design task is
limited to selecting the clock frequency that controls the
filter’s corner frequency.
An external capacitor is used to generate a clock using
the internal oscillator, or an external clock signal can be
used. An uncommitted operational amplifier (noninverting
input grounded) is provided for building a continuous-
time lowpass filter for post-filtering or anti-aliasing.
Produced in an 8-pin DIP/SO and a 16-pin wide SO
package, and requiring a minimum of external compo-
nents, the MAX291 series delivers very aggressive per-
formance from a tiny area.
19-4526; Rev 5; 5/10
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
CLOCK
Pin Configuration is 8-pin DIP/SO.
INPUT
ADC Anti-Aliasing Filter
Noise Analysis
DAC Post-Filtering
50Hz/60Hz Line-Noise Filtering
8
1
IN
CLK
Typical Operating Circuit
________________________________________________________________ Maxim Integrated Products
6
General Description
MAX29_
7
+5V
-5V
V+
V-
2
OP OUT
OP IN-
Applications
OUT
5
3
4
OUTPUT
Switched-Capacitor Filters
o 8th-Order Lowpass Filters:
o Clock-Tunable Corner-Frequency Range:
o No External Resistors or Capacitors Required
o Internal or External Clock
o Clock to Corner Frequency Ratio:
o Low Noise: -70dB THD + Noise (Typ)
o Operate with a Single +5V Supply or
o Uncommitted Op Amp for Anti-Aliasing or Clock-
o 8-Pin DIP and SO Packages
Ordering Information continued at end of data sheet.
* Contact factory for dice specifications.
** Contact factory for availability and processing to MIL-STD-883.
MAX291CPA
MAX291CSA
MAX291CWE
MAX291C/D
MAX291EPA
MAX291ESA
MAX291EWE
MAX291MJA
Butterworth (MAX291/MAX295)
Bessel
0.1Hz to 25kHz (MAX291/MAX292)
0.1Hz to 50kHz (MAX295/MAX296)
100:1 (MAX291/MAX292)
Dual ±5V Supplies
Noise Filtering
16-pin Wide SO at end of data sheet.
50:1 (MAX295/MAX296)
PART
TOP VIEW
8th-Order, Lowpass,
OP OUT
OP IN-
(MAX292/MAX296)
CLK
V-
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
1
2
3
4
Ordering Information
Pin Configurations
DIP/SO
MAX29_
8
7
6
5
8 Plastic DIP
8 SO
16 Wide SO
Dice*
8 Plastic DIP
8 SO
16 Wide SO
8 CERDIP**
PIN-PACKAGE
IN
V+
GND
OUT
Features
1

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MAX295CSA+ Summary of contents

Page 1

... MAX29_ 1 CLOCK CLK -5V Pin Configuration is 8-pin DIP/SO. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 8th-Order, Lowpass, Switched-Capacitor Filters o 8th-Order Lowpass Filters: Butterworth (MAX291/MAX295) Bessel o Clock-Tunable Corner-Frequency Range: 0.1Hz to 25kHz (MAX291/MAX292) ...

Page 2

Lowpass, Switched-Capacitor Filters ABSOLUTE MAXIMUM RATINGS Supply Voltage (V+ to V-).......................................................12V Input Voltage at Any Pin.............V- + (-0.3V) ≤ V Continuous Power Dissipation 8-Pin Plastic DIP (derate 9.09mW/°C above +70°C) ...727mW 8-Pin SO (derate 5.88mW/°C above +70°C)................471mW 16-Pin Wide ...

Page 3

ELECTRICAL CHARACTERISTICS (continued) ( -5V, filter output measured at OUT pin, 20kΩ load resistor to ground at OUT and OP OUT, f (MAX291/MAX292 50kHz (MAX295/MAX296), T CLK PARAMETER Output DC Swing Output Offset ...

Page 4

Lowpass, Switched-Capacitor Filters ( -5V +25° 100kHz (MAX291/MAX292 CLK MAX291/MAX295 FREQUENCY RESPONSE 1kHz o -0.1 MAX291 -0.2 -0.3 MAX295 -0.4 -0.5 -0.6 -0.7 0 200 ...

Page 5

V- = -5V 5kΩ +25°C, unless otherwise noted.) LOAD A MAX296 LOW-VOLTAGE FREQUENCY RESPONSE V+ = +2. -2. 20kHz - 2kHz C -16 ...

Page 6

Lowpass, Switched-Capacitor Filters _____________________Pin Description 8-PIN 16-PIN NAME 10, N.C. No Connect 15, 16 Clock Input. Use internal CLK external clock. Negative Supply pin. Dual supplies: -2.375V to ...

Page 7

Figure 2. 8th-Order Ladder Filter Network error on its respective poles, while the same mismatch in a ladder filter design will spread its error over all poles. The MAX291/MAX292/MAX295/MAX296 input impedance ...

Page 8

Lowpass, Switched-Capacitor Filters 22k R2 330pF 22k 22k INPUT C2 1500pF OP OUT MAX29_ Pin Configuration is 8-pin DIP/SO. Figure 4. Uncommitted Op Amp Configured as a 2nd-Order Butterworth Lowpass Filter (F = 10kHz) ...

Page 9

Configurations (continued) TOP VIEW N.C. 1 N.C. 2 CLK 3 V- MAX29_ 4 OP OUT 5 OP IN- 6 N.C. 7 N.C. 8 WIDE SO _______________________________________________________________________________________ 8th-Order, Lowpass, Switched-Capacitor Filters For the latest package outline information and land patterns, ...

Page 10

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2010 Maxim Integrated Products ...

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