LTC6255/LTC6256/LTC6257
6.5MHz, 65µA Power
Efficient Rail-to-Rail I/O
Op Amps
FeAtures
Description
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Gain Bandwidth Product: 6.5MHz
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 capacitive load up to 100nF.
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.
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–3dB Bandwidth (A = +1): 4.5MHz
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Low Quiescent Current: 65µA
Stable for Capacitive Load Up to 100nF
Offset Voltage: 350µV Maximum
Rail-to-Rail Input and Output
Supply Voltage Range: 1.8V to 5.25V
Input Bias Current: 50nA Maximum
CMRR/PSRR: 100dB/100dB
Shutdown Current: 7µA Maximum
Operating Temperature Range: –40°C to 125°C
Single in 6-Lead TSOT-23 Package
Dual in 8-Lead MS8, MS10, TS0T-23, 2mm × 2mm
Thin DFN Packages
For applications that require power-down, the LTC6255
and LTC6256 in S6 and MS10 packages offer shutdown
whichreducesthecurrentconsumptionto7µAmaximum.
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Quad in MS16 Package
ApplicAtions
The LTC6255 family can be used as plug-in replacements
formanycommerciallyavailableopampstoreducepower
and improve input/output range and performance.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
Over-The-Top is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
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Micropower Active Filters
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Portable Instrumentation
Battery or Solar Powered Systems
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Automotive Electronics
typicAl ApplicAtion
LTC6255 Driving LTC2361 ADC
Low Power, Low Distortion ADC Driver
0
V
S
= –1dBFS, 5kHz
IN
3.3V
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
f
= 125kSps
SNR = 72.5dB
SFDR = 89dB
3.3V
t
t
= 5µs
= 3µs
ACQ
CONV
V
V
REF
DD
+
V
CS
SDO
SCK
IN
324Ω
1%
5mV TO 2V
LTC6255
LTC2361
GND
A
IN
–
470pF
NPO
OV
DD
625567 TA01a
6.34k, 1%
22pF
10k
1%
I
= 540µA TOTAL AT 125kSps
SUPPLY
0
10
20
30
40
50
60
FREQUENCY (kHz)
625567 TA01b
625567fb
1