LTC6655
0.25ppm Noise, Low Drift
Precision Buffered
Reference Family
FeaTures
DescripTion
The LTC®6655 is a complete family of precision bandgap
voltage references, offering exceptional noise and drift
performance. This low noise and drift is ideally suited for
thehighresolutionmeasurementsrequiredbyinstrumenta-
tion and test equipment. In addition, the LTC6655 is fully
specified over the temperature range of –40°C to 125°C,
ensuring its suitability for demanding automotive and
industrialapplications.Advancedcurvaturecompensation
allowsthisbandgapreferencetoachieveadriftoflessthan
2ppm/°C with a predictable temperature characteristic
and an output voltage accurate to 0.025ꢀ, reducing or
eliminating the need for calibration.
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Low Noise: 0.25ppm (0.1Hz to 10Hz)
P-P
625nV for the LTC6655-2.5
P-P
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Low Drift: 2ppm/°C Max
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High Accuracy: 0.025ꢀ Max
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Fully Specified from –40°C to 125°C
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100ꢀ Tested at –40°C, 25°C and 125°C
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Load Regulation: <10ppm/mA
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Sinks and Sources Current: 5mA
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Low Dropout: 500mV
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Maximum Supply Voltage: 13.2V
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Low Power Shutdown: <20µA Max
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Available Output Voltages: 1.25V, 2.048V, 2.5V, 3V,
3.3V, 4.096V, 5V
Available in an 8-Lead MSOP Package
The LTC6655 can be powered from as little as 500mV
above the output voltage to as much as 13.2V. Superior
load regulation with source and sink capability, coupled
with exceptional line rejection, ensures consistent per-
formance over a wide range of operating conditions. A
shutdown mode is provided for low power applications.
Available in a small MSOP package, the LTC6655 family
of references is an excellent choice for demanding preci-
sion applications.
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applicaTions
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Instrumentation and Test Equipment
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High Resolution Data Acquisition Systems
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Weigh Scales
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Precision Battery Monitors
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High Temperature Applications
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.
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Precision Regulators
Medical Equipment
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High Output Current Precision Reference
Typical applicaTion
Low Frequency 0.1Hz to 10Hz Noise (LTC6655-2.5)
Basic Connection
LTC6655-2.5
3V < V ≤ 13.2V
V
C
V
V
IN
OUT
IN
OUT_F
OUT_S
C
IN
500nV/DIV
SHDN
V
0.1µF
OUT
10µF
GND
6655 TA01a
6655 TA01b
1s/DIV
6655fa
ꢀ