1

sn623012 623012fas

LT6230/LT6230-10/

LT6231/LT6232

–

+

R6

499

Ω

LT6202

+

+

–

1/2 LT6231

–

+

–

+

1/2 LT6231

R7

499

Ω

R4

499

Ω

R2

196

Ω

R1

10

Ω

R3

196

Ω

R5

499

Ω

623012 TA01a

BW = 5.1MHz

MEASUREMENT BW = 8MHz

–

s

Ultrasound Amplifiers

s

Low Noise, Low Power Signal Processing

s

Active Filters

s

Driving A/D Converters

s

Rail-to-Rail Buffer Amplifiers

s

Low Noise Voltage: 1.1nV/

√Hz

s

Low Supply Current: 3.5mA/Amp Max

s

Low Offset Voltage: 350

µV Max

s

Gain Bandwidth Product:

s

Wide Supply Range: 3V to 12.6V

s

Output Swings Rail-to-Rail

s

Common Mode Rejection Ratio 115dB Typ

s

Output Current: 30mA

s

Operating Temperature Range – 40

°C to 85°C

s

LT6230 Shutdown to 10

µA Maximum

s

LT6230/LT6230-10 in SOT-23 Package

s

Dual LT6231 in 8-Pin SO and Tiny DFN Packages

s

LT6232 in 16-Pin SSOP Package

APPLICATIO S

FEATURES

TYPICAL APPLICATIO

DESCRIPTIO

215MHz, Rail-to-Rail Output,

1.1nV/

√Hz, 3.5mA Op Amp Family

, LTC and LT are registered trademarks of Linear Technology Corporation.

The LT

noise, rail-to-rail output unity gain stable op amps that

feature 1.1nV/

√Hz noise voltage and draw only 3.5mA of

supply current per amplifier. These amplifiers combine

very low noise and supply current with a 215MHz gain

bandwidth product, a 70V/

µs slew rate and are optimized

for low supply voltage signal conditioning systems. The

LT6230-10 is a single amplifier optimized for higher gain

applications resulting in higher gain bandwidth and slew

rate. The LT6230 and LT6230-10 include an enable pin

that can be used to reduce the supply current to less than

10

µA.

The amplifier family has an output that swings within

50mV of either supply rail to maximize the signal dynamic

range in low supply applications and is specified on 3.3V,

5V and

amplifier is among the most noise efficient of any op amp.

The LT6230/LT6230-10 is available in the 6-lead SOT-23

package and the LT6231 dual is available in the 8-pin SO

package with standard pinouts. For compact layouts, the

dual is also available in a tiny dual fine pitch leadless

package (DFN). The LT6232 is available in the 16-pin

SSOP package.

LT6230/LT6230-10/

LT6231/LT6232

Noise Voltage and Unbalanced

Noise Current vs Frequency

Low Noise Low Power Instrumentation Amplifier

FREQUENCY (Hz)

6

5

4

3

2

1

0

10

1k

10k

100k

623012 TA01b

100

NOISE VOLTAGE

NOISE CURRENT

6

5

4

3

2

1

0