THS3112

THS3115

SLOS385 – SEPTEMBER 2001

LOW-NOISE, HIGH-SPEED CURRENT FEEDBACK AMPLIFIERS

1

www.ti.com

FEATURES

– 2.9 pA/

√Hz Noninverting Current Noise

– 10.8 pA/

√Hz Inverting Current Noise

– 2.2 nV/

√Hz Voltage Noise

Supply

– 110 MHz (–3 dB, G=1,

±15 V)

– 1550 V/

µs Slew Rate (G = 2, ±15 V)

– 300-

µA Shutdown Quiescent Current Per

Channel

Protection

TSSOP PowerPAD

 Package

APPLICATIONS

DESCRIPTION

The THS3112/5 are low-noise, high-speed current

feedback amplifiers, ideal for any application requiring

high output current. The low noninverting current noise

of 2.9 pA/

√Hz and the low inverting current noise of 10.8

pA/

√Hz increase signal to noise ratios for enhanced

signal resolution. The THS3112/5 can operate from

±5-V to ±15-V supply voltages, while drawing as little as

4.5 mA of supply current per channel. It offers low

100-

Ω load. The THS3115 features a low power

shutdown mode, consuming only 300-

µA shutdown

quiescent current per channel. The THS3112/5 is

packaged in a standard SOIC, SOIC PowerPAD

, and

TSSOP PowerPAD packages.

1

10

100

10

100

1 K

10 K

100 K

f – Frequency – Hz

VOLTAGE NOISE AND CURRENT NOISE

vs

FREQUENCY

In–

In+

Vn

VCC = ±5 V to ±15 V

TA = 25°C

THS3112

SOIC (D) AND

SOIC PowerPAD

(TOP VIEW)

1

2

3

4

8

7

6

5

1 OUT

1 IN–

1 IN+

2 OUT

2 IN–

2 IN+

1

2

3

4

5

6

7

14

13

12

11

10

9

8

1 OUT

1 IN–

1 IN+

N/C

GND

N/C

2 OUT

2 IN–

2 IN+

N/C

SHUTDOWN

N/C

THS3115

SOIC (D) AND

TSSOP PowerPAD

(TOP VIEW)

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.

PowerPAD is a trademark of Texas Instruments.

Copyright

 2001, Texas Instruments Incorporated

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.