TLC04/MF4A-50, TLC14/MF4A-100

BUTTERWORTH FOURTH-ORDER LOW-PASS

SWITCHED-CAPACITOR FILTERS

SLAS021A – NOVEMBER 1986 – REVISED MARCH 1995

3

POST OFFICE BOX 655303

±7 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0

°C to 70°C

. . . . . .

TLC04I/MF4A-50I, TLC14I/MF4A-100I

– 40

°C to 85°C

. . . . . . . .

TLC04M/MF4A-50M, TLC14M/MF4A-100M

– 55

°C to 125°C

. . .

–65

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds

260

°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTE 1: All voltage values are with respect to the AGND terminal.

recommended operating conditions

TLC04/MF4A-50

TLC14/MF4A-100

UNIT

MIN

MAX

MIN

MAX

UNIT

Positive supply voltage, VCC+

2.25

6

2.25

6

V

Negative supply voltage, VCC–

– 2.25

–6

– 2.25

–6

V

High-level input voltage, VIH

2

2

V

Low-level input voltage, VIL

0.8

0.8

V

Clock frequency f lk (see Note 2)

VCC

± = ±2.5 V

5

1.5 x 106

5

1.5 x 106

Hz

Clock frequency, fclock (see Note 2)

VCC

± = ±5 V

5

2x 106

5

2x 106

Hz

Cutoff frequency, fco (see Note 3)

0.1

40 x 103

0.05

20 x 103

Hz

TLC04C/MF4A-50C, TLC14C/MF4A-100C

0

70

0

70

Operating free-air temperature, TA

TLC04I/MF4A-50I, TLC14I/MF4A-100I

–40

85

–40

85

°C

TLC04M/MF4A-50M, TLC14M/MF4A-100M

–55

125

–55

125

NOTES:

2. Above 250 kHz, the input clock duty cycle should be 50% to allow the operational amplifiers the maximum time to settle while

processing analog samples.

3. The cutoff frequency is defined as the frequency where the response is 3.01 dB less than the dc gain of the filter.

filter section

PARAMETER

TEST CONDITIONS

TLC04/MF4A-50

TLC14/MF4A-100

UNIT

PARAMETER

TEST CONDITIONS

MIN

TYP‡

MAX

MIN

TYP‡

MAX

UNIT

VOO

Output offset voltage

25

50

mV

VOM

Peak output voltage

VOM+

RL =10kΩ

1.8

2

1.8

2

V

VOM

Peak output voltage

VOM –

RL = 10 kΩ

– 1.25

– 1.7

– 1.25

– 1.7

V

IOS

Short circuit output current

Source

TA =25°C

See Note 4

– 0.5

– 0.5

mA

IOS

Short-circuit output current

Sink

TA = 25°C,

See Note 4

4

4

mA

ICC

Supply current

fclock = 250 kHz

1.2

2.25

1.2

2.25

mA

‡ All typical values are at TA = 25°C.

NOTE 4: IOS(source) is measured by forcing the output to its maximum positive voltage and then shorting the output to the VCC – terminal

IOS(sink) is measured by forcing the output to its maximum negative voltage and then shorting the output to the VCC+ terminal.