Voltage Reference Circuit operates with less than 1 µA.
April 7, 2010 -
Operating on 850 nA of supply current with output drive capability of 5 mA, Model LT6656 has initial error of less than 0.05% and guaranteed temperature drift of less than 10 ppm/ºC. Bipolar device can withstand reverse battery conditions, accept input voltages up to 18 V, and operate from voltages as low as 3 mV above output voltage. Housed in ThinSOT(TM) package, IC is specified for operation from -40 to 85°C and is suitable for portable, wireless, and remote devices.
(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)
Original Press release
Linear Technology Corp.
1630 McCarthy Blvd.
Milpitas, CA, 95035
USA
10ppm/°C, 3mV Dropout Voltage Reference Operates with Less than 1µA
MILPITAS, CA - Linear Technology announces the LT6656, a precision SOT23 voltage reference that operates on only 850nA of supply current. The LT6656 has an initial error of less than 0.05% and a guaranteed temperature drift of less than 10ppm/ºC. This combination of precision and ultralow power is ideal for portable, wireless and remote devices. With an output drive capability of 5mA, the LT6656 is suitable for a wide range of applications. For example, the LT6656 could serve as both the supply voltage and the precision reference for a low power, high resolution ADC. The LT6656 can replace low power shunt references, offering better efficiency and regulation in the presence of variable load current and supply voltages. For many applications, the extremely low quiescent current allows the LT6656 to remain in an always-on, stable state.
Building on Linear Technology's extensive family of precision voltage references, the LT6656 is optimized for battery-powered operation. This high performance bipolar device can withstand reverse battery conditions, accept input voltages up to 18V and operate from voltages as low as 3mV above the output voltage. When unpowered, the output is high impedance, avoiding loading on the rest of the circuit. The LT6656 is fully specified for operation from -40ºC to 85ºC, and is guaranteed functional over the extreme temperature range of -55ºC to 125ºC.
"The high precision of the LT6656, combined with only 1µA of supply current packaged in a tiny SOT23, demonstrates a significant advance in voltage reference technology," stated Brendan Whelan, design manager for Linear Technology.
The LT6656 is currently in production with seven voltage options. Prices start at $1.74 each in 1,000-piece quantities. For more information, visit www.linear.com.
Summary Features LT6656
850nA Supply Current
Excellent Accuracy and Drift:
o A-Grade
(0.05% Initial Accuracy, 10ppm/ºC Drift)
o B-Grade
(0.1% Initial Accuracy, 20ppm/ºC Drift)
5mA Output Drive Capability
Reverse Input / Output Protection
3mV Dropout Voltage
Thermal Hysteresis: 25ppm
Fully Specified Over -40ºC to 85ºC
Guaranteed Operational from -55ºC to 125ºC
7 Voltage Options: 1.25V, 2.048V, 2.5V, 3V, 3.3V, 4.096V & 5V
Low Profile (1mm) ThinSOT(TM) Package
About Linear Technology
Linear Technology Corporation, a manufacturer of high performance linear integrated circuits, was founded in 1981, became a public company in 1986 and joined the S&P 500 index of major public companies in 2000. Linear Technology products include high performance amplifiers, comparators, voltage references, monolithic filters, linear regulators, DC-DC converters, battery chargers, data converters, communications interface circuits, RF signal conditioning circuits, Module products, and many other analog functions. Applications for Linear Technology's high performance circuits include telecommunications, cellular telephones, networking products such as optical switches, notebook and desktop computers, computer peripherals, video/multimedia, industrial instrumentation, security monitoring devices, high-end consumer products such as digital cameras and MP3 players, complex medical devices, automotive electronics, factory automation, process control, and military and space systems.
LT, LTC, LTM, µModule and are registered trademarks and ThinSOT is also a trademark of Linear Technology Corp. All other trademarks are the property of their respective owners.
|
|
|
|
|
|
|
| 
