MAX7403ESA+ Maxim Integrated Products, MAX7403ESA+ Datasheet - Page 11

• Manufacturer Part Number: MAX7403ESA+
• Description: IC FILTER LOWPASS 8-SOIC
• Manufacturer: Maxim Integrated Products

Specifications of MAX7403ESA+

• Filter Type: Elliptic, Lowpass Switched Capacitor
• Frequency - Cutoff Or Center: 10kHz
• Number Of Filters: 1
• Max-order: 8th
• Voltage - Supply: 4.5 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Number Of Channels: Single
• Cutoff Frequency: 10 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
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

with V
is lowpass filtered by the SCF, and V
output stage. See the Electrical Characteristics for
COM and OS input voltage ranges. Changing the volt-
age on COM or OS significantly from midsupply
reduces the filter’s dynamic range.
The MAX7400/MAX7403 operate from a single +5V
supply. The MAX7404/MAX7407 operate from a single
+3V supply. Bypass V
tor. If dual supplies are required, connect COM to the
system ground and GND to the negative supply. Figure
5 shows an example of dual-supply operation. Single-
supply and dual-supply performance are equivalent.
For single-supply or dual-supply operation, drive CLK
and SHDN from GND (V- in dual-supply operation) to
V
for a ±1.5V supply, use MAX7404 or MAX7407. For ±5V
dual-supply applications, use the MAX291–MAX297.
The ideal input signal range is determined by observ-
ing the voltage level at which the total harmonic
distortion plus noise (THD+N) is minimized for a given
corner frequency. The Typical Operating Character-
istics show THD+N response as the input signal’s
peak-to-peak amplitude is varied. These measurements
are made with OS and COM biased at midsupply.
Figure 5. Dual-Supply Operation
DD
V+
V-
*DRIVE SHDN TO V- FOR LOW-POWER SHUTDOWN MODE.
. For a ±2.5V supply, use the MAX7400 or MAX7403;
COM
= V
CLOCK
INPUT
DD
Input Signal Amplitude Range
______________________________________________________________________________________
/ 2 (typical), and where (V
IN
CLK
DD
to GND with a 0.1µF capaci-
MAX7400
MAX7403
MAX7404
MAX7407
V
GND
V+
DD
V-
SHDN
COM
OUT
Power Supplies
OS
OS
*
0.1 F
is added at the
OUTPUT
IN
- V
8th-Order, Lowpass, Elliptic,
0.1 F
COM
Switched-Capacitor Filters
)
When using the MAX7400/MAX7403/MAX7404/
MAX7407 for anti-aliasing or post-DAC filtering, syn-
chronize the DAC and the filter clocks. If the clocks are
not synchronized, beat frequencies may alias into the
passband.
The high clock-to-corner frequency ratio (100:1) also
eases the requirements of pre- and post-SCF filtering.
At the input, a lowpass filter prevents the aliasing of fre-
quencies around the clock frequency into the pass-
band. At the output, a lowpass filter attenuates the
clock feedthrough.
A high clock-to-corner frequency ratio allows a simple
RC lowpass filter, with the cutoff frequency set above
the SCF corner frequency, to provide input anti-aliasing
and reasonable output clock attenuation.
Harmonic distortion arises from nonlinearities within the
filter. Such nonlinearities generate harmonics when a
pure sine wave is applied to the filter input. Table 1 lists
typical harmonic distortion values with a 10kΩ load and
an input signal of 4Vp-p (MAX7400/MAX7403) or 2Vp-p
(MAX7404/MAX7407), at T
Table 1. Typical Harmonic Distortion
MAX7400
MAX7403
MAX7404
MAX7407
FILTER
Anti-Aliasing and Post-DAC Filtering
(kHz)
f
100
500
100
500
100
500
100
500
CLK
(kHz)
f
1
5
1
5
1
5
1
5
C
1000
1000
1000
1000
(Hz)
A
200
200
200
200
f
IN
= +25°C.
Harmonic Distortion
(Vp-p)
V
4
4
2
2
IN
2nd
DISTORTION (dB)
-89
-89
-88
-84
-85
-85
-85
-86
HARMONIC
TYPICAL
3rd
-82
-77
-81
-80
-82
-81
-82
-84
4th
-89
-93
-91
-90
-85
-86
-85
-85
5th
-86
-88
-87
-91
-86
-84
-86
-86
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