MAX7409 Maxim Integrated Products, MAX7409 Datasheet
MAX7409
Available stocks
Related parts for MAX7409
MAX7409 Summary of contents
Page 1
... An offset adjust pin allows for adjustment of the DC out- put level. The MAX7409/MAX7413 Bessel filters provide low over- shoot and fast settling, while the MAX7410/MAX7414 Butterworth filters provide a maximally flat passband response. Their fixed response simplifies the design task to selecting a clock frequency ...
Page 2
... Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS—MAX7409/MAX7410 (V = +5V, filter output measured at OUT, 10kΩ || 50pF load to GND at OUT COM, 0.1µF capacitor from COM to GND, ...
Page 3
... ELECTRICAL CHARACTERISTICS—MAX7409/MAX7410 (V = +5V, filter output measured at OUT, 10kΩ || 50pF load to GND at OUT COM, 0.1µF capacitor from COM to GND, DD SHDN = 100kHz CLK A MIN PARAMETER SYMBOL POWER REQUIREMENTS Supply Voltage V Supply Current Shutdown Current I SHDN Power-Supply Rejection Ratio PSRR SHUTDOWN ...
Page 4
... Supply Current I DD Shutdown Current I SHDN Power-Supply Rejection Ratio PSRR SHUTDOWN SHDN Input High V SDH SHDN Input Low V SDL SHDN Input Leakage Current FILTER CHARACTERISTICS (V = +5V for MAX7409/MAX7410 OUT, SHDN = 100kHz CLK A PARAMETER BESSEL FILTERS—MAX7409/MAX7413 Insertion Gain Relative to IN ...
Page 5
... MAX7409/MAX7410 unless otherwise noted.) MAX7409/MAX7413 FREQUENCY RESPONSE (BESSEL 1kHz -16 -24 -32 -40 -48 -56 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 INPUT FREQUENCY (kHz) MAX7410/MAX7414 PASSBAND FREQUENCY RESPONSE (BUTTERWORTH) 0 1kHz C 0 -0.5 -1.0 -1.5 -2.0 -2.5 -3.0 -3.5 ...
Page 6
... Lowpass, Switched-Capacitor Filters (V = +5V for MAX7409/MAX7410 +3V for MAX7413/MAX7414 unless otherwise noted.) MAX7409 TOTAL HARMONIC DISTORTION PLUS NOISE vs. INPUT SIGNAL AMPLITUDE 0 SEE TABLE A -10 -20 -30 -40 -50 -60 B -70 -80 A -90 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 AMPLITUDE (Vp-p) ...
Page 7
... To override internal biasing, drive COM with an external supply Filter Input 3 GND Ground 4 V Positive Supply Input: +5V for MAX7409/MAX7410, +3V for MAX7413/MAX7414 OUT Filter Output Offset Adjust Input. To adjust output offset, connect external supply through a resistive voltage divider (Figure 3). Connect OS to COM if no offset adjustment is needed. Refer to the Mode Input Adjustment section ...
Page 8
... An alternative approach is to emulate a passive net- work using switched-capacitor integrators with summing and scaling. Figure 2 shows a basic 5th-order ladder filter structure. A switched-capacitor filter such as the MAX7409/ MAX7410/MAX7413/MAX7414 emulates a passive ladder filter. The filter’s component sensitivity is low when com- pared to a cascaded biquad design, because each component affects the entire filter shape, not just one pole-zero pair ...
Page 9
... See the Electrical Characteristics for the voltage range of COM and OS. Changing the voltage on COM or OS significantly from midsupply reduces the filter’s dynamic range. The MAX7409/MAX7410 operate from a single +5V supply and the MAX7413/MAX7414 operate from a sin- gle +3V supply. Bypass V to GND with a 0.1µF DD capacitor. If dual supplies are required (± ...
Page 10
... Lowpass, Switched-Capacitor Filters Table 1. MAX7410/MAX7414 Typical Harmonic Distortion f CLK FILTER (kHz) 500 MAX7410 100 500 MAX7414 100 Table 2. MAX7409/MAX7413 Typical Harmonic Distortion f CLK FILTER (kHz) 500 MAX7409 100 500 MAX7413 100 Ordering Information (continued) PART TEMP. RANGE MAX7413CUA 0°C to +70°C MAX7413CPA 0° ...
Page 11
Information ______________________________________________________________________________________ 5th-Order, Lowpass, Switched-Capacitor Filters 11 ...
Page 12
... 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. 12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 1998 Maxim Integrated Products Package Information (continued) Printed USA is a registered trademark of Maxim Integrated Products ...