LTC6255/LTC6256/LTC6257

Rev E

1

For more information www.analog.com

APPLICATIONS

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Micropower Active Filters

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Portable Instrumentation

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Battery or Solar Powered Systems

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Automotive Electronics

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Gain Bandwidth Product: 6.5MHz

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–3dB Bandwidth (AV = +1): 4.5MHz

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Low Quiescent Current: 65µA

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C-Load™ Op Amp Drives all Capacitive Loads

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Offset Voltage: 350µV Maximum

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Rail-to-Rail Input and Output

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Supply Voltage Range: 1.8V to 5.25V

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Input Bias Current: 50nA Maximum

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CMRR/PSRR: 100dB/100dB

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Shutdown Current: 7µA Maximum

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

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Single in 6-Lead TSOT-23, 2mm × 2mm DFN Packages

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Dual in 8-Lead MS8, MS10, TS0T-23, 2mm × 2mm

DFN

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Quad in MS16 Package

TYPICAL APPLICATION

DESCRIPTION

6.5MHz, 65µA Power

Efficient Rail-to-Rail I/O

Op Amps

The LTC®6255/LTC6256/LTC6257 are single/dual/quad

operational amplifiers with low noise, low power, low

supply voltage, and rail-to-rail inputs and outputs. They

are unity gain stable with or without capacitive loads.

They feature 6.5MHz gain-bandwidth product, 1.8V/µs

slew rate while consuming only 65µA of supply current

per amplifier operating on supply voltages ranging from

1.8V to 5.25V. The combination of low supply current,

low supply voltage, high gain bandwidth product and low

noise makes the LTC6255 family unique among rail-to-rail

input/output op amps with similar supply current. These

operational amplifiers are ideal for low power and low

noise applications.

For applications that require power-down, the LTC6255

and LTC6256 in S6 and MS10 packages offer shutdown

which reduces the current consumption to 7µA maximum.

The LTC6255 family can be used as plug-in replacements

for many commercially available op amps to reduce power

and improve input/output range and performance.

Low Power, Low Distortion ADC Driver

FEATURES

LTC6255 Driving LTC2361 ADC

VIN = –1dBFS, 5kHz

fS = 125kSps

SNR = 72.5dB

SFDR = 89dB

tACQ = 5µs

tCONV = 3µs

FREQUENCY (kHz)

625567 TA01b

0

10

20

30

40

50

60

0

–30

–50

–10

–110

–20

–40

–60

–70

–80

–90

–100

LTC6255

VIN

5mV TO 2V

3.3V

3.3V

10k

1%

22pF

6.34k, 1%

324

1%

470pF

NPO

GND

CS

SDO

SCK

OVDD

VDD

AIN

ISUPPLY = 540µA TOTAL AT 125kSps

VREF

625567 TA01a

LTC2361

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