8th-Order, Lowpass,

Switched-Capacitor Filters

ELECTRICAL CHARACTERISTICS (continued)

(V+ = 5V, V- = -5V, filter output measured at OUT pin, 20k

Ω load resistor to ground at OUT and OP OUT, fCLK = 100kHz

(MAX291/MAX292) or fCLK = 50kHz (MAX295/MAX296), TA = TMIN to TMAX, unless otherwise noted.)

IN = GND

V+ = 5V, V- = -5V, VCLK = 0V to 5V

V- = 0V, GND = V±2

VCLK = 0V or 5V

TA = +25°C, fCLK = 100kHz

fCLK = 100kHz

COSC = 1000pF

CONDITIONS

mA

15

22

4.750

11.000

Single Supply

V

±2.375

±5.500

Supply Voltage

Dual Supply

µA

0.05

Input Bias Current

V

±4

Output DC Swing

mV

±10

±50

Input Offset Voltage

dB

0.15

0

-0.15

DC Insertion Gain Error with

Output Offset Removed

mV

±150

±400

V

±4

Output DC Swing

Output Offset Voltage

1.0

Low

V

4.0

Clock Input High

(Note 1)

µA

±70

±120

Internal Oscillator

Current Source/Sink

dB

-70

Total Harmonic Distortion

plus Noise

mVp-p

6

Clock Feedthrough

kHz

29

35

43

Internal Oscillator

Frequency

UNITS

MIN

TYP

MAX

PARAMETER

V+ = 2.375V, V- = -2.375V, VCLK = -2V to 2V

712

Supply Current

CLOCK

UNCOMMITTED OP AMP

POWER REQUIREMENTS

V

V

Typical Operating Characteristics

(V+ = 5V, V- = -5V, TA = +25°C, fCLK = 100kHz (MAX291/MAX292) or fCLK = 50kHz (MAX295/MAX296), unless otherwise noted.)

0.990

1.000

1.020

1.010

1.030

2.0

3.5

4.0

2.5

3.0

4.5

5.0

5.5

NORMALIZED INTERNAL OSCILLATOR

FREQUENCY vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

1nF EXTERNAL

CAPACITOR CLK

0

100

50

200

150

300

250

350

450

400

500

0

468

2

1012141618

INTERNAL OSCILLATOR PERIOD vs.

CAPACITANCE VALUE

CAPACITANCE (nF)

0.97

0.94

1.03

1.00

1.06

-60

-20

0

20

-40

40 60

80 100 120 140

NORMALIZED INTERNAL OSCILLATOR

FREQUENCY vs. TEMPERATURE

TEMPERATURE (

°C)

1nF EXTERNAL

CAPACITOR CLK

Note 1. Guaranteed by design.

MAX291/MAX292/MAX295/MAX296

Maxim Integrated

3