LT1639HS - 1.2MHz Quad Rail-to-Rail Op Amp | ADI
MPN: LT1639HS ✓ सक्रियLT1639HS अवलोकन
An operational amplifier is a gain-control device that uses high open-loop gain to amplify small voltage differences. The rail-to-rail input stage accepts signals near the supply limits, while the rail-to-rail output stage can swing close to both rails. In the broader hierarchy, an operational amplifier belongs to the amplifier IC category within integrated circuits and is commonly used for buffering, filtering, sensing, and closed-loop control.
The LT1639 family combines four amplifiers with a 1.2 MHz gain-bandwidth product and 0.4 V/us slew rate. Its rail-to-rail input and output operation supports systems in which signals approach the available supply range. The 14-SOIC package provides a conventional surface-mount footprint, while the -40°C to +125°C temperature range supports industrial and extended-temperature equipment.
Low-power operation makes the LT1639 useful when four analog channels are required without the drive current of higher-speed amplifiers. The 350 uV input-offset specification represents the device's input imbalance, which matters in precision current-sense and sensor-conditioning paths. Its 1.2 MHz bandwidth is adequate for audio and general instrumentation rather than high-speed video or communications signaling.
Typical uses include four-channel sensor acquisition, low-frequency active filters, audio preamplification, battery-powered instrumentation, and industrial control interfaces. One package can implement four gain stages or four independent buffers. When driving heavy capacitive loads, add the required isolation resistance and check the stability behavior against the load capacitance before finalizing the layout.
Keep the analog input traces short, provide a solid ground reference, and place input and output decoupling capacitors close to the supply pins. Account for input bias-current errors when working with high-impedance sources, and verify offset, bias current, output swing, and noise at the intended supply voltage. The LT1639HS datasheet pin-description table should be used when assigning tracks because the complete pin names are not reproduced on this page.
This product page organizes the LT1639HS specifications, same-family alternatives, application guidance, and design considerations into a practical selection reference. It also helps engineers distinguish the HS temperature-grade ordering options by package, temperature marking, and electrical behavior before committing a PCB layout.
के लिए ड्रॉप-इन विकल्प LT1639HS — समान पैकेज, पिन-टू-पिन संगत। PCB रीवर्क आवश्यक करने वाले भिन्न-पैकेज पार्ट्स शामिल नहीं हैं।
इस सीरीज़ के वेरिएंट
समान श्रृंखला के मॉडल जो ड्रॉप-इन संगत हैं LT1639HS (समान फॉर्म फैक्टर और फुटप्रिंट) — इसमें भिन्न Package, Power Class.
LT1639HS#PBF
✅ ड्रॉप-इन📋 संदर्भ विकल्प (कैटलॉग में नहीं)
LT1639CS#PBF
✅ ड्रॉप-इन📋 संदर्भ विकल्प (कैटलॉग में नहीं)
LT1639IS
✅ ड्रॉप-इनकीमत के लिए संपर्क करें
डेटाशीट देखें →LT1639IN#PBF
✅ ड्रॉप-इन📋 संदर्भ विकल्प (कैटलॉग में नहीं)
LT1639IS#PBF
✅ ड्रॉप-इन📋 संदर्भ विकल्प (कैटलॉग में नहीं)
LT1639HS Maximum Ratings और Electrical Characteristics
| Number of Amplifiers | 4 amplifiers |
| Amplifier Type | General-purpose operational amplifier |
| Gain-Bandwidth Product | 1.2 MHz |
| Slew Rate | 0.4 V/us |
| Supply Voltage Range | 2.5 V to 44 V |
| Input Offset Voltage | 350 uV |
| Input Common-Mode Range | Rail-to-rail input |
| Output Swing | Rail-to-rail output |
| Over-the-Top Operation | Supported |
| Power Class | Micropower operation |
| पैकेज | 14-SOIC, 0.154 inch width |
| Package Width | 3.90 mm |
| पिन काउंट | 14 pins |
| माउंटिंग प्रकार | Surface mount |
| ऑपरेटिंग तापमान रेंज | -40°C to +125°C |
| Orderable Packaging | Tube |
LT1639HS 3.90 mm पिन कॉन्फ़िगरेशन गाइड
LT1639HS (3.90 mm पैकेज) के लिए पिन कॉन्फ़िगरेशन। इस एनालॉग कंपोनेंट में इनपुट, आउटपुट और पावर सप्लाई पिन हैं। ऑफ़सेट नल, कम्पनसेशन और एनेबल पिन कॉन्फ़िगरेशन के लिए निर्माता डेटाशीट देखें। सिग्नल कंडीशनिंग और एम्प्लीफ़ायर सर्किट के लिए आदर्श।
इसके लिए कोई विस्तृत pinout data उपलब्ध नहीं: LT1639HS.
देखें डेटाशीट पूर्ण पिन कॉन्फ़िगरेशन के लिए।
सामान्य अनुप्रयोग
LT1639HS के लिए उपयुक्त है 6 अनुप्रयोगs: Industrial Sensor Signal Conditioning, Battery-Powered Portable Instruments, Audio Preamplification, Active Filtering and Control Loops, Precision DC Measurement, Communications Interface Conditioning.
Industrial Sensor Signal Conditioning
The LT1639HS fits four-channel industrial sensor conditioning because it integrates four rail-to-rail input/output amplifiers while operating from 2.5 V to 44 V. Its 1.2 MHz gain-bandwidth product is suitable for amplifiers, level shifters, and first-stage buffers covering slow sensor signals. The -40°C to +125°C temperature range supports extended industrial environments, although each sensor type still requires verification of input bias current, offset error, and common-mode limits. Use one amplifier per channel for gain or buffering and the remaining channels for active filtering, current-to-voltage conversion, or output isolation. Keep high-impedance sensor traces short and guard against leakage on the board surface.
अनुशंसित
Battery-Powered Portable Instruments
The LT1639HS is appropriate for portable measurement equipment where four analog channels are needed without the power demand of a high-speed quad amplifier. Its low-power operating concept, 2.5 V minimum supply, rail-to-rail input, and rail-to-rail output allow operation near the limits of a compact battery rail. The 1.2 MHz bandwidth is suitable for temperature, pressure, light, and resistance sensors whose signals change slowly. In a portable instrument, the four amplifiers can provide instrumentation amplification, active filtering, and buffered sensor outputs. Designers should account for the amplifier quiescent current, source impedance, leakage, and the reduction in dynamic range when operating close to the supply rails.
अनुशंसित
Audio Preamplification
The LT1639HS can implement four low-level audio preamplifier or summing stages in one 14-SOIC package. Its 0.4 V/us slew rate and 1.2 MHz gain-bandwidth product are more than adequate for many audio-band and general-purpose audio applications, while rail-to-rail input and output stages improve signal range at low supply voltages. The four channels can support microphone, line, headphone-buffer, and tone-shaping functions. Stable operation around audio frequencies requires suitable feedback values and gain-bandwidth headroom; avoid excessive capacitive loading on outputs. The SOIC footprint also simplifies hand assembly and repair compared with a very fine-pitch package.
अनुशंसित
Active Filtering and Control Loops
The LT1639HS is useful in active filter and control-loop designs requiring several independently configured amplifiers. Its 1.2 MHz gain-bandwidth product supports moderate-bandwidth low-pass, high-pass, and band-pass stages, and rail-to-rail output operation can maximize available signal swing in low-voltage control systems. Quad-channel use reduces component count when implementing a two-stage filter plus buffer or a multi-axis analog control interface. Set resistor and capacitor values for the intended corner frequency, and verify noise gain and closed-loop stability across temperature and supply tolerance. Place feedback components close to the device and route sensitive high-impedance nodes away from switching power nodes.
अनुशंसित
Precision DC Measurement
The LT1639HS can support precision DC measurement paths where the 350 uV input-offset specification is important and the signal bandwidth remains below approximately 1.2 MHz. Four channels can be assigned to low-level sensor inputs, excitation buffering, differential instrumentation, or reference conditioning. Rail-to-rail input operation is valuable around a mid-supply reference, while the output stage can drive moderate loads without requiring a separate buffer. For highest accuracy, account for input bias current, offset drift, bias-current cancellation requirements, and resistor-network matching. A low-reference-voltage difference amplifier should also be evaluated against the input and output common-mode limits at the selected supply.
अनुशंसित
Communications Interface Conditioning
The LT1639HS is suitable for slow communications-interface conditioning where four channels can receive, bias, filter, or buffer low-frequency signals. Its over-the-top input capability can support systems whose signal levels exceed the nominal supply range under defined operating conditions, while the 44 V maximum supply provides ample headroom for industrial interfaces. The 1.2 MHz bandwidth is appropriate for many UART, control-bus, sensor-bus, and analog telemetry paths but not for high-speed differential data lines. Use it for analog stages adjacent to digital transceivers rather than as a direct high-speed line driver. Confirm input overvoltage limits, logic thresholds, isolation requirements, and channel-to-channel behavior in the complete interface design.
अनुशंसित
अनुशंसित उत्पादों का सारांश
के लिए इंजीनियरिंग संदर्भ डेटा LT1639HS — तुलना, डिज़ाइन मार्गदर्शन और अनुपालन जानकारी।
चयन गाइड
विकल्पों के साथ तुलना
| पैरामीटर | यह उत्पाद | LT1639HS#PBF | LT1639CS#PBF | LT1639IS | LT1639IN#PBF | LT1639IS#PBF |
|---|---|---|---|---|---|---|
| Package | 14-SOIC | 14-SOIC - same | 14-SOIC - same | 14-SOIC - same | 14-SOIC - same | 14-SOIC - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Number of Amplifiers | 4 amplifiers | 4 amplifiers | 4 amplifiers | 4 amplifiers | 4 amplifiers | 4 amplifiers |
| Gain-Bandwidth Product | 1.2 MHz | 1.2 MHz | 1.2 MHz | 1.2 MHz | 1.2 MHz | 1.2 MHz |
| Slew Rate | 0.4 V/us | 0.4 V/us | 0.4 V/us | 0.4 V/us | 0.4 V/us | 0.4 V/us |
| Input and Output Operation | Rail-to-rail input and output | Rail-to-rail input and output | Rail-to-rail input and output | Rail-to-rail input and output | Rail-to-rail input and output | Rail-to-rail input and output |
| Over-the-Top Capability | Supported | Supported | Supported | Supported | Supported | Supported |
| Temperature and Ordering Grade | HS grade, -40°C to +125°C | HS grade with PBF ordering suffix | CS grade with PBF ordering suffix | IS grade | IN grade with PBF ordering suffix | IS grade with PBF ordering suffix |
मुख्य विशेषताएँ
- Four amplifiers share one compact package (बनामLT1639IS)
- Rail-to-rail input and output operation (बनामLT1639IN#PBF)
- Wide supply operation for industrial and portable systems (बनामLT1639CS#PBF)
- Low-power general-purpose signal conditioning (बनामLT1639HS#PBF)
डिज़ाइन नोट्स
Place the supply bypass capacitor close to the LT1639HS supply pins and connect it with a short, low-inductance ground return. The quad amplifier shares the same package and supply pins, so a distant capacitor can allow supply noise and transient current to couple into all four channels. Route each input directly to its assigned pin, avoid shared high-impedance copper where practical, and keep output routes separated from adjacent input and reference nets.
Do not assume that rail-to-rail output means the output can reach either supply rail exactly. Check the output-voltage limits under the intended load and supply voltage using the manufacturer electrical-characteristics tables. Likewise, over-the-top input capability does not remove all input-protection or absolute-maximum restrictions. Verify the signal amplitude, supply state, and temperature at every connector before applying a transient or out-of-range signal.
The 1.2 MHz gain-bandwidth product limits the useful small-signal bandwidth of each amplifier, while the 0.4 V/us slew rate limits large-signal transitions. Select feedback resistors and capacitors so the closed-loop response retains adequate phase margin, and keep high-value compensation components close to the relevant pins. For capacitive loads, use the manufacturer stability guidance or an isolation resistor rather than adding capacitance directly at the output.
Estimate amplifier dissipation from the actual supply voltage, quiescent current, output load current, and output voltage rather than using nominal output-current ratings alone. For a simplified estimate, use P = VCC x IQ plus VOUT x ILOAD under the applicable operating mode, while excluding internal power that remains inside the device. Compare the resulting worst-case value with the package thermal limits and account for elevated ambient temperature and nearby heat sources.
अनुपालन जानकारी
The LT1639HS#PBF ordering code includes a lead-free marking, but formal RoHS, REACH, AEC-Q100, halogen-free, and conflict-minerals status require confirmation from the current manufacturer or assembly documentation.
