LT1122 Fast Settling, JFET Input Operational Amplifier

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

A unique poly-gate JFET process minimizes gate series resistance and gate-to-drain capacitance, facilitating wide bandwidth performance, without degrading JFET transistor matching. It slews at 80V/µs and settles in 340ns. The LT1122 is internally compensated to be unity gain stable, yet it has a bandwidth of 14MHz at a supply current of only 7mA. Its speed makes the LT1122 an ideal choice for fast settling 12-bit data conversion and acquisition systems. The LT1122 offset voltage of 120µV, and voltage gain of 500,000 also support the 12-bit accurate applications. The input bias current of 10pA and offset current of 4pA combined with its speed allow the LT1122 to be used in such applications as high speed sample and hold amplifiers, peak detectors, and integrators

产品特点 Features

100% Tested Settling Time 340ns Typ to 1mV at Sum Node, 10V Step 540ns Max Tested with Fixed Feedback Capacitor
Slew Rate 60V/µs Min
Gain Bandwidth Product 14MHz
Power Bandwidth (20Vp-p) 1.2 MHz
Unity Gain Stable; Phase Margin 60°
Input Offset Voltage 600µV Max
Input Bias Current 25°C 75pA Max 70°C 600pA Max
Input Offset Current 25°C 40pA Max 70°C 150pA Max
Low Distortion

参数

应用

Fast 12-Bit D/A Output Amplifiers
High Speed Buffers
Fast Sample and Hold Amplifiers
High Speed Integrators
Voltage to Frequency Converters
Active Filters
Log Amplifiers
Peak Detectors

典型应用图

LT1122 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) *
LT1122ACN8	PDIP	8	C	$5.50	$4.50
LT1122ACN8#PBF	PDIP	8	C	$5.50	$4.50
LT1122BCN8	PDIP	8	C	$4.58	$3.70
LT1122BCN8#PBF	PDIP	8	C	$4.58	$3.70
LT1122CCN8	PDIP	8	C	$3.50	$2.85
LT1122CCN8#PBF	PDIP	8	C	$3.50	$2.85
LT1122CS8	SO	8	C	$3.83	$3.10
LT1122CS8#PBF	SO	8	C	$3.83	$3.10
LT1122CS8#TR	SO	8	C		$3.16
LT1122CS8#TRPBF	SO	8	C		$3.16
LT1122DCN8	PDIP	8	C	$3.00	$2.45
LT1122DCN8#PBF	PDIP	8	C	$3.00	$2.45
LT1122DS8	SO	8	C	$3.25	$2.65
LT1122DS8#PBF	SO	8	C	$3.25	$2.65
LT1122DS8#TR	SO	8	C		$2.71
LT1122DS8#TRPBF	SO	8	C		$2.71

LT1122 数据手册及相关资料下载

数据手册(英文) : LT1122 - Fast Settling, JFET Input Operational Amplifier.PDF
应用指南 (英文) : AN45 - Measurement and Control Circuit Collection.PDF
应用指南 (英文) : AN52 - linear Technology Magazine Circuit Collection, Volume 1.PDF
应用指南 (英文) : AN72 - A Seven-Nanosecond Comparator for Single Supply Operation.PDF
设计要点 (英文) : DN101 - A Precision Wideband Current Probe for LCD Backlight Measurement.PDF
设计要点 (英文) : DN140 - Updated Operational Amplifier Selection Guide for Optimum Noise Performance.PDF
可靠性数据 : R172 Reliability Data .PDF