R

G

R

F

R

2

R

1

C

2

V

IN

V

OUT

1

2pRC

f

=

-

3 dB

C

1

R

R = R

C

C = C

Q = Peaking factor

(Butterworth Q = 0.707)

1

1

2

2

=

=

R

(

(

R

F

2 -

1

Q

19

TLV6001, TLV6002, TLV6004

www.ti.com

SBOS779B – JUNE 2016 – REVISED OCTOBER 2016

Product Folder Links: TLV6001 TLV6002 TLV6004

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Copyright © 2016, Texas Instruments Incorporated

System Examples (continued)

If even more attenuation is needed, a multiple pole filter is required. The Sallen-Key filter may be used for this

task, as shown in Figure 24. For best results, the amplifier must have a bandwidth that is eight to 10 times the

filter frequency bandwidth. Failure to follow this guideline may result in phase shift of the amplifier.

Figure 24. Two-Pole, Low-Pass, Sallen-Key Filter

10 Power Supply Recommendations

The TLV600x is specified for operation from 1.8 V to 5.5 V (±0.9 V to ±2.75 V); many specifications apply from

–40°C to +125°C. The Typical Characteristics presents parameters that may exhibit significant variance with

regard to operating voltage or temperature.

CAUTION

Supply voltages larger than 7 V may permanently damage the device. (See the

Absolute Maximum Ratings table).

Place 0.1-μF bypass capacitors close to the power-supply pins to reduce errors coupling in from noisy or high-

impedance power supplies. For more detailed information on bypass capacitor placement, see Layout

Guidelines.