0

0.01

0.02

0.03

0.04

0.05

0.06

0.07

0

1

2

3

4

5

6

7

8

Number of 150

Ω Loads

PAL

NTSC

Gain = 2,

40 IRE − NTSC and PAL,

Worst Case

±100 IRE Ramp

+

−

75

Ω

75

Ω

75

Ω

75

Ω

75

Ω

n Lines

75-

Ω Transmission Line

649

Ω

649

Ω

−15 V

15 V

0

0.02

0.04

0.06

0.08

0.1

0.12

0.14

0

1

2

3

4

5

6

7

8

Number of 150

Ω Loads

PAL

NTSC

Gain = 2,

40 IRE − NTSC and PAL,

Worst Case

±100 IRE Ramp

DIFFERENTIAL PHASE

vs

NUMBER OF LOADS

DIFFERENTIAL GAIN

vs

NUMBER OF LOADS

VIDEO DISTRIBUTION AMPLIFIER APPLICATION

THS3120

THS3121

LOW-NOISE, HIGH-OUTPUT DRIVE, CURRENT-FEEDBACK

OPERATIONAL AMPLIFIERS

Check for Samples: THS3120 THS3121

1

FEATURES

DESCRIPTION

23

•

Low Noise:

The

THS3120

and

THS3121

are

low-noise,

high-voltage,

high

output

current

drive,

–

1 pA/

√Hz Noninverting Current Noise

current-feedback amplifiers designed to operate over

–

10 pA/

√Hz Inverting Current Noise

a wide supply range of ±5 V to ±15 V for today's

–

2.5 nV/

√Hz Voltage Noise

high-performance applications.

•

High Output Current Drive: 475 mA

The THS3120 offers a power saving mode by

•

High Slew Rate:

providing a power-down pin for reducing the 7-mA

quiescent current of the device, when the device is

–

1700 V/

not active.

•

These

amplifiers

provide

well-regulated

ac

•

Wide Supply Range: ±5 V to ±15 V

performance characteristics. Most notably, the 0.1-dB

•

Power-Down Feature: (THS3120 Only)

flat bandwidth is exceedingly high, reaching beyond

90 MHz. The unity-gain bandwidth of 130 MHz allows

APPLICATIONS

for good distortion characteristics at 10 MHz. Coupled

•

Video Distribution

with high 1700-V/

μs slew rate, the THS3120 and

THS3121 amplifiers allow for high output voltage

•

Power FET Driver

swings at high frequencies.

•

Pin Driver

•

Capacitive Load Driver

The THS3120 and THS3121 are offered in an

SOIC-8

(D)

package

and

an

MSOP-8

(DGN)

PowerPAD™ package.

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

PowerPAD is a trademark of Texas Instruments.

3

All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2003–2009, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.