5th-Order, Lowpass,

Switched-Capacitor Filters

6

_______________________________________________________________________________________

Typical Operating Characteristics (continued)

(VDD = +5V for MAX7409/MAX7410, VDD = +3V for MAX7413/MAX7414, fCLK = 100kHz, SHDN = VDD, COM = OS = VDD / 2, TA = +25°C,

unless otherwise noted.)

-90

-70

-80

-50

-60

-40

-30

-10

-20

0

0

1.0

2.0

3.0

4.0

5.0

0.5

1.5

2.5

3.5

4.5

MAX7409

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. INPUT SIGNAL AMPLITUDE

AMPLITUDE (Vp-p)

A

B

SEE TABLE A

-90

-70

-80

-50

-60

-40

-30

-10

-20

0

0

1.0

2.0

3.0

4.0

5.0

0.5

1.5

2.5

3.5

4.5

MAX7410

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. INPUT SIGNAL AMPLITUDE

AMPLITUDE (Vp-p)

A

B

SEE TABLE A

-90

-70

-80

-50

-60

-40

-30

-10

-20

0

0

0.5

1.0

1.5

2.0

2.5

3.0

MAX7413

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. INPUT SIGNAL AMPLITUDE

AMPLITUDE (Vp-p)

A

B

SEE TABLE A

-90

-70

-80

-50

-60

-40

-30

-10

-20

0

0

0.5

1.0

1.5

2.0

2.5

3.0

MAX7414

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. INPUT SIGNAL AMPLITUDE

AMPLITUDE (Vp-p)

A

B

SEE TABLE A

0

4

2

8

6

10

12

0

150

200

50

100

250

300

350

INTERNAL OSCILLATOR PERIOD

vs. LARGE CAPACITANCE

CAPACITANCE (nF)

VDD = +5V

VDD = +3V

1.11

1.13

1.12

1.15

1.14

1.18

1.17

1.16

1.19

-40

0

-20

20

40

60

80

100

SUPPLY CURRENT vs. TEMPERATURE

TEMPERATURE (°C)

VDD = +5V

VDD = +3V

0

40

20

80

60

100

120

0

1500 2000

500

1000

2500 3000 3500

INTERNAL OSCILLATOR PERIOD

vs. SMALL CAPACITANCE

CAPACITANCE (pF)

VDD = +5V

VDD = +3V

29.4

29.5

29.6

29.7

29.8

29.9

30.0

30.1

30.2

2.5

3.5

3.0

4.0

4.5

5.0

5.5

INTERNAL OSCILLATOR FREQUENCY

vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

COSC = 1000pF

29.0

29.5

30.5

30.0

31.0

31.5

-40

0

-20

20

40

60

80

100

INTERNAL OSCILLATOR FREQUENCY

vs. TEMPERATURE

TEMPERATURE (°C)

VDD = +5V

VDD = +3V

COSC = 1000pF