LTC6246/LTC6247/LTC6248



624678fa

Typical applicaTion

DescripTion

180MHz, 1mA Power

Efficient Rail-to-Rail

I/O Op Amps

power,highspeedunitygainstablerail-to-railinput/output

operational amplifiers. On only 1mA of supply current they

feature an impressive 180MHz gain-bandwidth product,

90V/µs slew rate and a low 4.2nV/√Hz of input-referred

noise. The combination of high bandwidth, high slew rate,

low power consumption and low broadband noise makes

these amplifiers unique among rail-to-rail input/output op

amps with similar supply currents. They are ideal for lower

supply voltage high speed signal conditioning systems.

TheLTC6246familymaintainshighefficiencyperformance

from supply voltage levels of 2.5V to 5.25V and is fully

specified at supplies of 2.7V and 5.0V.

For applications that require power-down, the LTC6246

and the LTC6247 in MS10 offer a shutdown pin which

disables the amplifier and reduces current consumption

to 42µA.

The LTC6246 family can be used as a plug-in replacement

for many commercially available op amps to reduce power

or to improve input/output range and performance.

L

, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear

Technology Corporation. All other trademarks are the property of their respective owners.

FeaTures

applicaTions

n

Gain Bandwidth Product: 180MHz

n

n

Low Quiescent Current: 1mA Max

n

High Slew Rate: 90V/µs

n

Input Common Mode Range Includes Both Rails

n

Output Swings Rail-to-Rail

n

Low Broadband Voltage Noise: 4.2nV/√Hz

n

Power-Down Mode: 42μA

n

Fast Output Recovery

n

Supply Voltage Range: 2.5V to 5.25V

n

Input Offset Voltage: 0.5mV Max

n

Input Bias Current: 100nA

n

Large Output Current: 50mA

n

CMRR: 110dB

n

Open Loop Gain: 45V/mV

n

Operating Temperature Range: –40°C to 125°C

n

Single in 6-Pin TSOT-23

n

Dual in MS8, 2mm

× 2mm Thin DFN,TS0T-23, MS10

n

Quad in MS16

n

Low Voltage, High Frequency Signal Processing

n

Driving A/D Converters

n

Rail-to-Rail Buffer Amplifiers

n

Active Filters

n

Video Amplifiers

n

Fast Current Sensing Amplifiers

n

Battery Powered Equipment

LTC6246

+

–

624678 TA01a

LTC2366

GND

3.3V 2.5V

CS

SDO

SCK

3.3V

499

1%

499

1%

10pF

FREQUENCY (kHz)

0

0

–10

–30

–50

–70

–20

–40

–60

–80

–90

–100

–110

400

800

200

600

624678 TA01b

1000

SFDR = 82dB

SNR = 70dB

1024 POINT FFT

Low Noise Low Distortion Gain = 2 ADC Driver

350kHz FFT Driving ADC