LT1178 17µA Max, Dual and Quad, Single Supply, Precision Op Amps

The LT™1178 is a micropower dual op amp in the standard 8-pin configuration; the LT1179 is a micropower quad op amp offered in the standard 14-pin packages. Both devices are optimized for single supply operation at 5V. Specifications are also provided at ±15V supplies.

The extremely low supply current is combined with true precision specifications: offset voltage is 30µV, offset currentis 50pA. Both offset parameters have low drift with temperature. The 1.5pAp-p current noise and picoampere offset current permit the use of megaohm level source resistors without introducing serious errors. Voltage noise, at 0.9µVp-p, is remarkably low considering the low supply current.

Both the LT1178 and LT1179 can be operated from a single supply (as low as one lithium cell or two NiCd 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.

For applications where three times higher supply current is acceptable, the micropower LT1077 single, LT1078 dual and LT1079 quad are recommended. The LT1077/78/79 have significantly higher bandwidth, slew rate, lower voltage noise and better output drive capability

产品特点 Features

17µA Max Supply Current per Amplifier
70µV Max Offset Voltage
250pA Max Offset Current
5nA Max Input Bias Current
0.9µVp-p 0.1Hz to 10Hz Voltage Noise
1.5pAp-p 0.1Hz to 10Hz Current Noise
0.5µV/°C Offset Voltage Drift
85kHz Gain-Bandwidth-Product
0.04V/µs Slew Rate
Single Supply Operation
Input Voltage Range Includes Ground
Output Swings to Ground while Sinking Current
No Pull Down Resistors are Needed
Output Sources and Sinks 5mA Load Current

参数

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

LT1178 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) *
LT1178ACN8	PDIP	8	C	$6.67	$5.40
LT1178ACN8#PBF	PDIP	8	C	$6.67	$5.40
LT1178CN8	PDIP	8	C	$3.67	$2.95
LT1178CN8#PBF	PDIP	8	C	$3.67	$2.95
LT1178IN8	PDIP	8	I	$4.58	$3.75
LT1178IN8#PBF	PDIP	8	I	$4.58	$3.75
LT1178S8	SO	8	C	$4.65	$3.75
LT1178S8#PBF	SO	8	C	$4.65	$3.75
LT1178S8#TR	SO	8	C		$3.81
LT1178S8#TRPBF	SO	8	C		$3.81
LT1178SW	SO	16	C	$4.92	$4.10
LT1178SW#PBF	SO	16	C	$4.92	$4.10
LT1178SW#TR	SO	16	C		$4.16
LT1178SW#TRPBF	SO	16	C		$4.16

LT1178 数据手册及相关资料下载

数据手册(英文) : LT1178 - 17µA Max, Dual and Quad, Single Supply, Precision Op Amps.PDF
应用指南 (英文) : AN42 - Voltage Reference Circuit Collection.PDF
应用指南 (英文) : AN48 - Using the LTC Op Amp Macromodels.PDF
应用指南 (英文) : AN59 - Applications of the LT1300 and LT1301 Micropower DC/DC Converters.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) : DN38 - Applications for a New Micropower, Low Charge Injection Analog Switch.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