8th-Order, Lowpass, Elliptic,

Switched-Capacitor Filters

6

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Typical Operating Characteristics (continued)

(VDD = +5V for MAX7400/MAX7403, VDD = +3V for MAX7404/MAX7407; VCOM = VOS = VDD / 2; SHDN = VDD; fCLK = 100kHz;

TA = +25°C; unless otherwise noted.)

1.5

1.8

1.7

1.6

1.9

2.0

2.1

2.2

2.3

2.4

2.5

2.5

3.5

3.0

4.0

4.5

5.0

5.5

SUPPLY CURRENT

vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

NO LOAD

MAX7404

MAX7407

MAX7400

MAX7403

1.97

1.99

1.98

2.01

2.00

2.02

2.03

-40

20

40

-20

0

60

80

100

SUPPLY CURRENT

vs. TEMPERATURE

TEMPERATURE (°C)

NO LOAD

MAX7400

MAX7403

MAX7404

MAX7407

-20

-15

-10

-5

0

5

10

15

20

2.5

3.5

3.0

4.0

4.5

5.0

5.5

OFFSET VOLTAGE

vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

VIN = VCOM = VDD/2

MAX7404

MAX7407

MAX7400

MAX7403

-0.5

0

0.5

1.5

1.0

2.0

-40

-20

0

20

40

60

80

100

OFFSET VOLTAGE vs. TEMPERATURE

TEMPERATURE (°C)

VIN = VCOM = VDD/2

-90

-70

-80

-50

-60

-40

-30

-10

-20

0

012345

THD PLUS NOISE vs. INPUT SIGNAL

AMPLITUDE (MAX7400)

AMPLITUDE (Vp-p)

NO LOAD

(SEE TABLE A)

B

C

D

-90

-70

-80

-50

-60

-40

-30

-10

-20

0

012345

THD PLUS NOISE vs. INPUT SIGNAL

AMPLITUDE AND RESISTIVE LOAD (MAX7400)

AMPLITUDE (Vp-p)

fIN = 200Hz

fC = 1kHz

MEASUREMENT BW = 22kHz

RL = 500Ω

RL = 1kΩ

RL = 10kΩ

-120

-80

-100

-60

0

20

-20

-40

40

012345

MAX7403/MAX7407 (r = 1.2)

FREQUENCY RESPONSE

INPUT FREQUENCY (kHz)

fC = 1kHz

-0.32

-0.16

-0.24

-0.08

0.16

0.24

0.08

0

0.32

0

202

404

606

808

1010

MAX7403/MAX7407 (r = 1.2)

PASSBAND FREQUENCY RESPONSE

INPUT FREQUENCY (Hz)

fC = 1kHz

-640

-480

-560

-400

-160

-80

-240

-320

0

0

240

480

720

960

1200

MAX7403/MAX7407 (r = 1.2)

PHASE RESPONSE

INPUT FREQUENCY (Hz)

fC = 1kHz