MAX7409：5th-Order, Lowpass, Switched-Capacitor Filters

Smallest, Low-Power 5th-Order Filters

The MAX7409/MAX7410/MAX7413/MAX7414 5th-order, lowpass, switched-capacitor filters (SCFs) operate from a single +5V (MAX7409/MAX7410) or +3V (MAX7413/ MAX7414) supply. These devices draw only 1.2mA of supply current and allow corner frequencies from 1Hz to 15kHz, making them ideal for low-power post-DAC filtering and anti-aliasing applications. They feature a shutdown mode, which reduces the 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 output level. The MAX7409/MAX7413 Bessel filters provide low overshoot 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.

Key Features

5th-Order Lowpass Filters
- Bessel Response (MAX7409/MAX7413)
- Butterworth Response (MAX7410/MAX7414)
Clock-Tunable Corner Frequency (1Hz to 15kHz)
Single-Supply Operation
- +5V (MAX7409/MAX7410)
- +3V (MAX7413/MAX7414)
Low Power
- 1.2mA (operating mode)
- 0.2µA (shutdown mode)
Available in 8-Pin µMAX®/DIP Packages
Low Output Offset: ±4mV
Single 5th-order, Bessel and Butterworth switched-capacitor filters. 15kHz maximum F (c)

MAX7409, MAX7410, MAX7413, MAX7414: Typical Operating Circuit

Applications/Uses

ADC Anti-Aliasing
Air-Bag Electronics
CT2 Base Stations
DAC Post-Filtering
Speech Processing

DataSheet

title	Download file
MAX7409-MAX7414 Data Sheet	MAX7409-MAX7414.pdf

Parametrics

Part Number	Filter Sections	Order Per Filter Section	Filter Class	Filter Type	Filter Characteristic	Program Method	Lowest Cutoff (Hz)	Highest Cutoff (kHz)	V_SUPPLY (V)	Design Tools	Oper. Temp. (°C)	Package/Pins	Budgetary Price
Part Number	Filter Sections	Order Per Filter Section	Filter Class	Filter Type	Filter Characteristic	Program Method	max	min	V_SUPPLY (V)	Design Tools	Oper. Temp. (°C)	Package/Pins	See Notes
MAX7409	1	5	Switched Cap	Lowpass	Bessel	Clock	1	15	5	EE-Sim	-40 to +85 0 to +70	µMAX/8 PDIP(N)/8	$2.97 @1k
MAX7410					Butterworth				5			µMAX/8 PDIP(N)/8	$2.27 @1k
MAX7413					Bessel				3			µMAX/8 PDIP(N)/8	$1.93 @1k
MAX7414					Butterworth				3			µMAX/8 PDIP(N)/8	$2.35 @1k

Design kits & evaluation modules

MAXFILTERBRD

Ordering Information

Part Number	Status	Recommended Replacement	Package	Temp	RoHS
MAX7409CPA	No Longer Available	MAX7409CPA+	PDIP(N),;8 pin;79.7 mm²	0°C to +70°C	No
MAX7409CPA+	Active		PDIP(N),;8 pin;79.7 mm²	0°C to +70°C	Lead Free
MAX7409CUA	No Longer Available	MAX7409CUA+	µMAX,;8 pin;15.6 mm²	0°C to +70°C	No
MAX7409CUA+	Active		µMAX,;8 pin;15.6 mm²	0°C to +70°C	Lead Free
MAX7409CUA+T	Active		µMAX,;8 pin;15.6 mm²	0°C to +70°C	Lead Free
MAX7409CUA-T	No Longer Available	MAX7409CUA+T	µMAX,;8 pin;15.6 mm²	0°C to +70°C	No
MAX7409EPA	No Longer Available	MAX7409EPA+	PDIP(N),;8 pin;79.7 mm²	-40°C to +85°C	No
MAX7409EPA+	Active		PDIP(N),;8 pin;79.7 mm²	-40°C to +85°C	Lead Free
MAX7409EUA	No Longer Available	MAX7409EUA+	µMAX,;8 pin;15.6 mm²	-40°C to +85°C	No
MAX7409EUA+	Active		µMAX,;8 pin;15.6 mm²	-40°C to +85°C	Lead Free
Part Number	Status	Recommended Replacement	Package	Temp	RoHS
MAX7409EUA+T	Active		µMAX,;8 pin;15.6 mm²	-40°C to +85°C	Lead Free
MAX7409EUA-T	No Longer Available	MAX7409EUA+T	µMAX,;8 pin;15.6 mm²	-40°C to +85°C	No