Zero-Drift Amplifier suits portable instrumentation.
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Press Release Summary:
Housed in 5-Pin SOT-23 (ThinSOT(TM)) package, LTC2054 and LTC2054HV zero-drift amplifiers require 175 µA max supply current over industrial temperature range of -40 to +85°C. Characteristics include 0.5 µV input offset voltage, 30 nV/°C offset drift, 600 fA bias current, and 2 pA offset current. Operational from 2.7-6/11 V, products feature rail-to-rail output voltage swing, 0.5 V/µs slew rate (typ), and 500 kHz gain bandwidth (typ).
Original Press Release:
Zero-Drift Amplifier for Portable Instrumentation Cuts Power More Than Half
MILPITAS, CA - March 18, 2004 - Linear Technology Corporation introduces the LTC2054 and LTC2054HV, the industry's lowest power zero-drift amplifiers for power sensitive applications. At 175uA maximum supply current rated over the industrial temperature range, the LTC2054/LTC2054HV offer a 2.5x reduction in power consumption over existing low power zero-drift amplifiers. This reduction in supply current is crucial for optimum battery life in portable applications such as medical instrumentation, handheld test equipment, electronic scales, and other battery-powered instruments.
"Housed in a miniature SOT-23 package the LTC2054/LTC2054HV feature the best DC accuracy of any zero drift amplifier available. The low input offset voltage of 0.5uV and almost negligible offset drift of 30nV/°C combined with 600fA bias current and 2pA offset current improve total system precision without the need for additional external components or post assembly trim," according to design manager Nello Sevastopoulos.
The LTC2054 is operational from 2.7V to 6V and the LTC2054HV operates from 2.7V to 11V, accommodating ±5V designs. Rail-to-rail output voltage swing and a wide input common-mode range that includes ground makes these single supply op amps ideal for use with a wide range of sensors.
Specified for operation over the commercial and industrial temperature ranges, pricing starts at $1.00 each in 1,000-piece quantities.
Summary of Features: LTC2054/LTC2054HV
Supply Current: 140uA typ, 175uA Max over -40°C to 85°C
Input Offset Voltage: 0.5uV typ, 3uV Max
Vos Drift with Temperature: 30nV/°C Max
Input Bias Current: 150pA Max over -40°C to 85°C
Input Offset Current: 300pA Max over -40°C to 85°C
Common Mode Rejection Ratio: 130dB typ, 120dB Min
Power Supply Rejection Ratio: 130dB typ, 120dB Min
Large Signal Voltage Gain: 140dB typ, 125dB Min
Input Voltage Noise 0.01Hz to 10 Hz: 1.6µV typ
Slew Rate: 0.5V/µs typ
Gain Bandwidth: 500kHz typ
Supply Voltage:
2.7V to 6V (LTC2054)
2.7V to ±5.5V (LTC2054HV)
Input Common Mode Range: V- to V+ -0.5V
Rail-to-Rail Output Voltage Swing
5-Pin SOT-23 (ThinSOT(TM)) Package
Company Background
Linear Technology Corporation was founded in 1981 as a manufacturer of high performance linear integrated circuits. Linear Technology products include operational, instrumentation and audio amplifiers; voltage regulators, power management devices, DC-DC converters and voltage references; comparators; monolithic filters; communications interface circuits; one-chip data acquisition sub-systems; pulse-width modulators and sample-and-hold devices; and high frequency devices. Applications for Linear Technology's high performance circuits include wireless and broadband telecommunications infrastructure, cellular telephones, networking products and satellite systems, notebook and desk top computers, computer peripherals, video/multimedia, industrial and medical instrumentation, automotive electronics, factory automation, process control, military and space systems, and high-end consumer products including digital cameras, MP3 players and other electronic products.
Note: LT, AND LTC are registered trademarks of Linear Technology Corp.
