LTC6655_15 Datasheet, PDF (1/26 Pages) Linear Technology – 0.25ppm Noise, Low Drift Precision References

LTC6655
0.25ppm Noise, Low Drift
Precision References
FEATURES
n _{Low Noise: 0.25ppmP-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
APPLICATIONS
n _{Instrumentation and Test Equipment}
n _{High Resolution Data Acquisition Systems}
n _{Weigh Scales}
n _{Precision Battery Monitors}
n _{Precision Regulators}
n _{Medical Equipment}
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
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, 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.
TYPICAL APPLICATION
3V < V_IN ≤ 13.2V
Basic Connection
C_IN
0.1µF
LTC6655-2.5
V_IN
V_{OUT_F}
SHDN
V_{OUT_S}
GND
V_OUT
C_OUT
10µF
6655 TA01a
Low Frequency 0.1Hz to 10Hz Noise (LTC6655-2.5)
500nV/DIV
For more information www.linear.com/LTC6655
1s/DIV
6655 TA01b
6655fe
1