1

2

3

5

4

V+

–IN

+IN

V–

V

OUT

DBV PACKAGE

(TOP VIEW)

V

IN

V

OUT

C

2

2.2pF

R

2

2k

Ω

SD1

BAT17

C

1

10nF

R

1

7.5

Ω

V

−

V+

U1

U2

V

−

V+

OPA365

OPA365

OPA365-EP

www.ti.com

SLOS735

– AUGUST 2011

50-MHz Low-Distortion High-CMRR Rail-to-Rail I/O, Single-Supply Operational Amplifier

Check for Samples: OPA365-EP

1

FEATURES

SUPPORTS DEFENSE, AEROSPACE,

AND MEDICAL APPLICATIONS

•

Gain Bandwidth: 50 MHz

•

Controlled Baseline

•

Zero-Crossover Distortion Topology

•

One Assembly/Test Site

– Excellent THD+N: 0.0004%

•

One Fabrication Site

– CMRR: 96.5 dB (Min)

•

Available in Military (

–55°C/125°C),

– Rail-to-Rail Input and Output

– Input 100 mV Beyond Supply Rail

•

Extended Product Life Cycle

•

Low Noise: 4.5 nV/

√Hz at 100 kHz

•

Extended Product-Change Notification

•

Slew Rate: 25 V/

µs

•

Product Traceability

•

Fast Settling: 0.3

µs to 0.01%

•

Precision

– Low Offset: 100 µV

(Typical at 25

°C)

– Low Input Bias Current: 0.2 pA

(Typical at 25

°C)

•

2.2-V to 5.5-V Operation

(1)

Additional temperature ranges available - contact factory

DESCRIPTION

The OPA365 zero-crossover series, rail-to-rail, high-performance, CMOS operational amplifier is optimized for

very low voltage, single-supply applications. Rail-to-rail input/output, low-noise (4.5 nV/

√Hz) and high-speed

operation (50-MHz gain bandwidth) make this device ideal for driving sampling analog-to-digital converters

(ADCs). The OPA365 supports audio, signal conditioning, sensor amplification, defense, aerospace and medical

applications. The OPA365 is also well-suited for cell phone power amplifier control loops.

Special features include an excellent common-mode rejection ratio (CMRR), no input stage crossover distortion,

high input impedance, and rail-to-rail input and output swing. The input common-mode range includes both the

negative and positive supplies. The output voltage swing is within 10mV of the rails.

The OPA365 is available in the SOT23-5 package and is specified for operation from

−55°C to 125°C.

Figure 1. Fast Settling Peak Detector

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.

PRODUCTION DATA information is current as of publication date.

Copyright

© 2011, 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.