LT1079 Micropower, Dual and Quad, Single Supply, Precision Op Amps

The H (Metal Can), J (Ceramic), and K (Metal Can) Packages From linear Technology Are Now Obsolete

The LT®1078 is a micropower dual op amp in 8-pin packages including the small outline surface mount package. The LT1079 is a micropower quad op amp offered in the standard 14-pin packages. Both devices are optimized for single supply operation at 5V. ±15V specifications are also provided.

Micropower performance of competing devices is achieved at the expense of seriously degrading precision, noise, speed and output drive specifications. The design effort of the LT1078/LT1079 was concentrated on reducing supply current without sacrificing other parameters. The offset voltage achieved is the lowest on any dual or quad nonchopper stabilized op amp—micropower or otherwise. Offset current, voltage and current noise, slew rate and gain bandwidth product are all two to ten times better than on previous micropower op amps.

The 1/f corner of the voltage noise spectrum is at 0.7Hz, at least three times lower than on any monolithic op amp. This results in low frequency (0.1Hz to 10Hz) noise performance which can only be found on devices with an order of magnitude higher supply current.

Both the LT1078 and LT1079 can be operated from a single supply (as low as one lithium cell or two Ni-Cad batteries). The input range goes below ground. The all-NPN output stage swings to within a few millivolts of ground while sinking current—no power consuming pull down resistors are needed

产品特点 Features

Available in 8-Pin SO Package
50µA Max Supply Current per Amplifier
70µV Max Offset Voltage
180µA Max Offset Voltage in 8-Pin SO
250pA Max Offset Current
0.6µVP-P, 0.1Hz to 10Hz Voltage Noise
3pAP-P, 0.1Hz to 10Hz Current Noise
0.4µV/°C Offset Voltage Drift
200kHz Gain Bandwidth Product
0.07V/µs Slew Rate
Single Supply Operation Input Voltage Range Includes Ground Output Swings to Ground while Sinking Current No Pull-Down
Output Sources and Sinks 5mA Load Current

应用

Battery or Solar-Powered Systems Portable Instrumentation Remote Sensor Amplifier Satellite Circuitry
Micropower Sample-and-Hold
Thermocouple Amplifier
Micropower Filters

典型应用图

参数

LT1079 订购信息和价格参考Package Variations and Pricing

器件型号	封装	引脚	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量) *
LT1079ACN	PDIP	14	C	$7.50	$6.25
LT1079ACN#PBF	PDIP	14	C	$7.50	$6.25
LT1079CN	PDIP	14	C	$4.17	$3.40
LT1079CN#PBF	PDIP	14	C	$4.17	$3.40
LT1079IN	PDIP	14	I	$5.17	$4.25
LT1079IN#PBF	PDIP	14	I	$5.17	$4.25
LT1079ISW	SO	16	I	$6.75	$5.45
LT1079ISW#PBF	SO	16	I	$6.75	$5.45
LT1079ISW#TR	SO	16	I		$5.51
LT1079ISW#TRPBF	SO	16	I		$5.51
LT1079MJ	CERDIP	14	M		$42.45
LT1079SW	SO	16	C	$5.42	$4.40
LT1079SW#PBF	SO	16	C	$5.42	$4.40
LT1079SW#TR	SO	16	C		$4.46
LT1079SW#TRPBF	SO	16	C		$4.46

LT1079 数据手册及相关资料下载

数据手册(英文) : LT1078/LT1079 - Micropower, Dual and Quad, Single Supply, Precision Op Amps.PDF
应用指南 (英文) : AN43 - Bridge Circuits.PDF
应用指南 (英文) : AN45 - Measurement and Control Circuit Collection.PDF
应用指南 (英文) : AN48 - Using the LTC Op Amp Macromodels.PDF
应用指南 (英文) : AN61 - Practical Circuitry for Measurement and Control Problems.PDF
应用指南 (英文) : AN67 - linear Technology Magazine Circuit Collection, Volume III.PDF
应用指南 (英文) : AN92 - Bias Voltage and Current Sense Circuits for Avalanche Photodiodes.PDF
设计要点 (英文) : DN23 - Micropower, Single Supply Applications: (1) A Self-Biased, Buffered Reference (2) Megaohm Input Impedance Difference Amplifier.PDF
设计要点 (英文) : DN40 - Designing with a New Family of Instrumentation Amplifiers.PDF
设计要点 (英文) : DN45 - Signal Conditioning for Platinum Temperature Transducers.PDF
设计要点 (英文) : DN56 - 3V Operation of linear Technology Op Amps.PDF
可靠性数据 : R046 Reliability Data .PDF
LT Journal : September 2009 - 3mm × 3mm, 16-Bit ADC Brings Accurate, Precise High Side Current Sensing to Tight Spaces.PDF