MAX7410EUA+ Maxim Integrated Products, MAX7410EUA+ Datasheet - Page 9

• Manufacturer Part Number: MAX7410EUA+
• Description: IC FILTER LOWPASS 5TH 8UMAX
• Manufacturer: Maxim Integrated Products

Specifications of MAX7410EUA+

• Filter Type: Butterworth, Lowpass Switched Capacitor
• Frequency - Cutoff Or Center: 15kHz
• Number Of Filters: 1
• Max-order: 5th
• Voltage - Supply: 4.5 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Number Of Channels: Single
• Cutoff Frequency: 15 KHz
• Supply Voltage (max): 5 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 5 V
• Supply Voltage (min): 4.5 V
• For Use With: MAXFILTERBRD+ - BOARD EVAL MAX7408/7415/418-7425
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

These devices feature a shutdown mode that is activat-
ed by driving SHDN low. In shutdown mode, the filter’s
supply current reduces to 0.2µA and its output becomes
high impedance. For normal operation, drive SHDN
high or connect it to V
The COM pin sets the common-mode input voltage and
is biased at mid-supply with an internal resistor-divider.
If the application does not require offset adjustment,
connect OS to COM. For applications requiring offset
adjustment, apply an external bias voltage through a
resistor-divider network to OS such as shown in Fig-
ure 3. For applications that require DC level shifting,
adjust OS with respect to COM. (Note: OS should not
be left unconnected.) The output voltage is represent-
ed by this equation:
with V
is lowpass filtered by the SCF, and OS is added at the
output stage. 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
capacitor. If dual supplies are required (±2.5V for
MAX7409/MAX7410, ±1.5V for MAX7413/MAX7414),
connect COM to system ground and connect GND to
the negative supply. Figure 4 shows an example of
dual-supply operation. Single- and dual-supply perfor-
mance are equivalent. For either single- or dual-supply
operation, drive CLK and SHDN from GND (V- in dual-
supply operation) to V
tions, use the MAX291–MAX297.
The optimal input signal range is determined by
observing the voltage level at which the Total Harmonic
Distortion + Noise is minimized for a given corner fre-
quency. The Typical Operating Characteristics show
graphs of the devices’ Total Harmonic Distortion plus
Noise Response as the input signal’s peak-to-peak
amplitude is varied.
__________Applications Information
COM
= V
V
DD
OUT
Input Signal Amplitude Range
_______________________________________________________________________________________
/ 2 (typical), and where (V
Low-Power Shutdown Mode
= (V
DD
Offset and Common-Mode
DD
IN
.
. For ±5V dual-supply applica-
- V
DD
COM
to GND with a 0.1µF
Input Adjustment
) + V
Power Supplies
OS
IN
- V
COM
Switched-Capacitor Filters
)
When using these devices for anti-aliasing or DAC
postfiltering, synchronize the DAC (or ADC) and the fil-
ter clocks. If the clocks are not synchronized, beat fre-
quencies will alias into the desired passband.
Harmonic distortion arises from nonlinearities within the
filter. These nonlinearities generate harmonics when a
pure sine wave is applied to the filter input. Table 1 lists
typical harmonic-distortion values for the MAX7410/
MAX7414 with a 10kΩ load at T
typical harmonic-distortion values for the MAX7409/
MAX7413 with a 10kΩ load at T
Figure 3. Offset Adjustment Circuit
Figure 4. Dual-Supply Operation
V+
V-
*DRIVE SHDN TO V- FOR LOW-POWER SHUTDOWN MODE.
0.1 F
CLOCK
INPUT
5th-Order, Lowpass,
V
SUPPLY
Anti-Aliasing and DAC Postfiltering
CLOCK
INPUT
IN
CLK
IN
CLK
MAX7409
MAX7410
MAX7413
MAX7414
V
GND
DD
MAX7409
MAX7410
MAX7413
MAX7414
V
GND
V+
Harmonic Distortion
DD
V-
SHDN
COM
OUT
A
A
OS
= +25°C.
= +25°C. Table 2 lists
SHDN
0.1 F
0.1 F
COM
OUT
OS
OUTPUT
*
0.1 F
OUTPUT
50k
50k
50k
0.1 F
9