LF347

現行

四路、36-V、3-MHz、高電壓轉換率 (13-V/µs)、輸入至 V+、JFET 輸入運算放大器

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TL074H 現行 具有操作溫度 -40°C 至 125°C 的四路、40-V、5-MHz、4-mV 偏移電壓、20-V/µs、輸入至 V+ 運算放大器 Wider temperature range (-40°C to 125°C), lower quiescent current (0.0937 mA), wider voltage range (4.5 V to 40 V), and improved offset voltage drift
TL084H 現行 具有操作溫度 -40°C 至 125°C 的四路、40-V、5.25-MHz、4-mV 偏移電壓、20-V/µs、輸入至 V+ 運算放大器 Wider supply range (4.5 V to 40 V), higher GBW (5.25 MHz), faster slew rate (20 V/us), lower offset voltage (4 mV), lower power (0.9375 mA)

產品詳細資料

Number of channels 4 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 7 Rail-to-rail In to V+ GBW (typ) (MHz) 3 Slew rate (typ) (V/µs) 13 Vos (offset voltage at 25°C) (max) (mV) 10 Iq per channel (typ) (mA) 2 Vn at 1 kHz (typ) (nV√Hz) 18 Rating Catalog Operating temperature range (°C) 0 to 70 Offset drift (typ) (µV/°C) 10 Input bias current (max) (pA) 200 CMRR (typ) (dB) 100 Iout (typ) (A) 0.031 Architecture FET Input common mode headroom (to negative supply) (typ) (V) 3 Input common mode headroom (to positive supply) (typ) (V) 0 Output swing headroom (to negative supply) (typ) (V) 1.5 Output swing headroom (to positive supply) (typ) (V) -1.5
Number of channels 4 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 7 Rail-to-rail In to V+ GBW (typ) (MHz) 3 Slew rate (typ) (V/µs) 13 Vos (offset voltage at 25°C) (max) (mV) 10 Iq per channel (typ) (mA) 2 Vn at 1 kHz (typ) (nV√Hz) 18 Rating Catalog Operating temperature range (°C) 0 to 70 Offset drift (typ) (µV/°C) 10 Input bias current (max) (pA) 200 CMRR (typ) (dB) 100 Iout (typ) (A) 0.031 Architecture FET Input common mode headroom (to negative supply) (typ) (V) 3 Input common mode headroom (to positive supply) (typ) (V) 0 Output swing headroom (to negative supply) (typ) (V) 1.5 Output swing headroom (to positive supply) (typ) (V) -1.5
PDIP (N) 14 181.42 mm² 19.3 x 9.4 SOIC (D) 14 51.9 mm² 8.65 x 6
  • Low Input Bias Current: 50 pA Typical
  • Low Input Noise Current: 0.01 pA/√Hz Typical
  • Low Total Harmonic Distortion
  • Low Supply Current: 8 mA Typical
  • Gain Bandwidth: 3 MHz Typical
  • High Slew Rate: 13 V/ms Typical
  • Low Input Bias Current: 50 pA Typical
  • Low Input Noise Current: 0.01 pA/√Hz Typical
  • Low Total Harmonic Distortion
  • Low Supply Current: 8 mA Typical
  • Gain Bandwidth: 3 MHz Typical
  • High Slew Rate: 13 V/ms Typical

The LF347 and LF347B devices are low-cost, high-speed, JFET-input operational amplifiers. They require low supply current yet maintain a large gain-bandwidth product and a fast slew rate. In addition, their matched high-voltage JFET inputs provide very low input bias and offset current.

The LF347 and LF347B can be used in applications such as high-speed integrators, digital-to-analog converters, sample-and-hold circuits, and many other circuits.

The LF347 and LF347B devices are characterized for operation from 0°C to 70°C.

The LF347 and LF347B devices are low-cost, high-speed, JFET-input operational amplifiers. They require low supply current yet maintain a large gain-bandwidth product and a fast slew rate. In addition, their matched high-voltage JFET inputs provide very low input bias and offset current.

The LF347 and LF347B can be used in applications such as high-speed integrators, digital-to-analog converters, sample-and-hold circuits, and many other circuits.

The LF347 and LF347B devices are characterized for operation from 0°C to 70°C.

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類型 標題 日期
* Data sheet LF347, LF347B JFET-Input Quad Operational Amplifiers datasheet (Rev. C) PDF | HTML 2016年 3月 31日
Application note Understanding Operational Amplifier Specifications (Rev. B) PDF | HTML 2021年 8月 16日
E-book The Signal e-book: A compendium of blog posts on op amp design topics 2017年 3月 28日
Application note Handbook of Operational Amplifier Applications (Rev. B) 2016年 9月 19日
Application note Get Fast Stable Response From Improved Unity-Gain Followers 2002年 10月 2日
Application note Get More Power Out of Dual or Quad Op-Amps 2002年 10月 2日

設計與開發

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模擬型號

LF347, LF347B PSpice Model

SLOJ038.ZIP (0 KB) - PSpice Model
計算工具

ANALOG-ENGINEER-CALC — 類比工程師計算機

The Analog Engineer’s Calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting op-amp gain with feedback (...)
設計工具

CIRCUIT060013 — 具有 T 網路回饋電路的反相放大器

此設計可反轉輸入訊號 VIN,並使用 1000 V/V 或 60 dB 訊號增益。具有 T 回饋網路的反相放大器可在沒有較小 R4 值或超大回饋電阻器值的情況下獲得高增益。
設計工具

CIRCUIT060015 — 可調式參考電壓電路

此電路結合反相及非反相放大器,讓參考電壓可從負輸入電壓向上調整至輸入電壓。可加入增益以提高最大負參考位準。
設計工具

CIRCUIT060074 — 具有比較器電路的高壓側電流感測

此高壓側電流感測解決方案使用一個具有軌對軌輸入共模範圍的比較器,若負載電流上升到 1 A 以上,便在比較器輸出 (COMP OUT) 建立過電流警示 (OC 警示) 訊號。此實作中的 OC 訊號為低電位作動。因此當超過 1-A 閾值時,比較器輸出會變低。實作磁滯後會在負載電流降低至 0.5 A (減少 50%) 時,讓 OC-Alert 返回邏輯高狀態。此電路利用開漏輸出比較器,為控制數位邏輯輸入針腳而進行電平轉換輸出高邏輯電平。對於需要驅動 MOSFET 開關閘極的應用,建議使用具推挽輸出的比較器。
模擬工具

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
模擬工具

TINA-TI — 基於 SPICE 的類比模擬程式

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
使用指南: PDF
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PDIP (N) 14 檢視選項
SOIC (D) 14 檢視選項

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