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LTC6655
1
6655fe
For more information www.linear.com/LTC6655
TYPICAL APPLICATION
DESCRIPTION
0.25ppm Noise, Low Drift
Precision References
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
the high resolution measurements required by instrumenta
-
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
industrial applications. Advanced curvature compensation
allows this bandgap reference to achieve a drift of less than
2ppm/°C with a predictable temperature characteristic
and an output voltage accurate to ±0.025%, reducing or
eliminating the need for calibration.
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.
The LTC6655 references are offered in an 8-lead MSOP
package and an 8-lead LS8 package. The LS8 is a 5mm
× 5mm surface mount hermetic package that provides
outstanding stability.
L, LT, LT C, LT M, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Basic Connection
FEATURES
APPLICATIONS
n
Low Noise: 0.25ppm
P-P
(0.1Hz to 10Hz)
625nV
P-P
for the LTC6655-2.5
n
Low Drift: 2ppm/°C Max
n
High Accuracy: ±0.025% Max
n
No Humidity Sensitivity (LS8 Package)
n
Thermal Hysteresis (LS8): 30ppm (–40°C to 85°C)
n
Long-Term Drift (LS8): 20ppm/√kHr
n
100% Tested at –40°C, 25°C and 125°C
n
Load Regulation: <10ppm/mA
n
Sinks and Sources Current: ±5mA
n
Low Dropout: 500mV
n
Maximum Supply Voltage: 13.2V
n
Low Power Shutdown: <20µA Max
n
Available Output Voltages: 1.25V, 2.048V, 2.5V, 3V,
3.3V, 4.096V, 5V
n
Available in an 8-Lead MSOP and High Stability
Hermetic 5mm × 5mm LS8 Packages
n
Instrumentation and Test Equipment
n
High Resolution Data Acquisition Systems
n
Weigh Scales
n
Precision Battery Monitors
n
Precision Regulators
n
Medical Equipment
LTC6655-2.5
V
IN
SHDN
C
OUT
10µF
V
OUT
6655 TA01a
V
OUT_F
V
OUT_S
3V < V
IN
≤ 13.2V
GND
C
IN
0.1µF
Low Frequency 0.1Hz to 10Hz Noise (LTC6655-2.5)
500nV/DIV
6655 TA01b
1s/DIV
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