LTC6363HMS8-2#PBF - Precision Low Power Diff Amp | Analog Devices
MPN： LTC6363HMS8-2#PBF ✓ 啟用中LTC6363HMS8-2#PBF 概覽
A fully differential amplifier (FDA) is a type of operational amplifier that has differential inputs and differential outputs, providing a balanced signal path that rejects common-mode noise and doubles the output voltage swing compared to single-ended amplifiers. FDAs are essential in modern signal chains, particularly for driving high-performance analog-to-digital converters (ADCs), where they convert single-ended signals to differential, provide gain, and buffer the ADC input. The LTC6363 family sits within the hierarchy of differential amplifiers, which are a subset of operational amplifiers, which in turn are part of the broader category of linear integrated circuits. This hierarchy is fundamental to understanding the role of the LTC6363 in precision signal conditioning.
Key features of the LTC6363HMS8-2#PBF include its fixed gain of 2V/V with precision laser-trimmed on-chip resistors, which provide a DC CMRR of 100dB, equivalent to using 0.0005% tolerance resistors. The device also features a shutdown pin for power saving, rail-to-rail outputs, and a low power consumption of typically 1.1mA. The input offset voltage is typically 50µV, and the input bias current is 100nA. The amplifier is specified over the -40°C to 125°C temperature range (H-grade) and is available in an 8-pin MSOP package.
Technically, the LTC6363-2 uses a precision architecture that includes internal matched resistors, ensuring accurate gain without external components. This design reduces board space and component count, while improving reliability and performance. The device's high slew rate and bandwidth make it suitable for driving SAR ADCs with sampling rates up to 500kSPS or more, depending on the ADC. The rail-to-rail output stage allows the amplifier to swing close to the supply rails, maximizing the dynamic range of the ADC.
Typical applications include driving SAR ADCs in industrial process control, medical instrumentation, and data acquisition systems. The LTC6363-2 is also used in communication systems, such as base stations and software-defined radios, where it conditions signals before digitization. Its low power and precision make it ideal for battery-powered portable instruments.
When designing with the LTC6363HMS8-2#PBF, ensure proper power supply decoupling with 0.1µF and 10µF capacitors close to the V+ and V- pins. The VOCM pin sets the output common-mode voltage, which should be matched to the ADC's reference voltage for optimal performance. The shutdown pin can be used to reduce power consumption when the amplifier is not in use.
直接替換替代品，適用於 LTC6363HMS8-2#PBF — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： LTC6363HMS8-2#PBF （相同外形與佔位） — 差異在於 Slew Rate, Output Type, Supply Voltage Range, Amplifier Type, Gain Bandwidth Product.
LTC6363HMS8-2#TRPBF
✅ 直接替換📋 參考替代品（不在目錄中）
LTC6363HMS8-1#PBF
✅ 直接替換📋 參考替代品（不在目錄中）
LTC6363HMS8-0.5#PBF
✅ 直接替換📋 參考替代品（不在目錄中）
LTC6363HMS8#PBF
✅ 直接替換📋 參考替代品（不在目錄中）
THS4551
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
LTC6363HMS8-2#PBF 最大額定值與電氣特性
| Amplifier Type | Differential |
| Number of Circuits | 1 |
| 輸出類型 | Differential, Rail-to-Rail |
| Gain | 2 V/V (fixed) |
| Supply Voltage Range | 2.8 V to 11 V (single), ±1.4 V to ±5.5 V (dual) |
| Bandwidth (-3dB) | 35 MHz |
| Gain Bandwidth Product | 500 MHz |
| Slew Rate | 75 V/µs |
| Input Bias Current | 100 nA |
| Input Offset Voltage | 50 µV (typical) |
| CMRR | 100 dB (DC) |
| 供應電流 | 1.1 mA (typical) |
| 工作溫度範圍 | -40°C to 125°C |
| 封裝 | 8-MSOP |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
LTC6363HMS8-2#PBF 腳位配置
| 腳位 1 | OUT+ — Positive differential output |
| 腳位 2 | V- — Negative supply or ground |
| 腳位 3 | IN+ — Non-inverting input |
| 腳位 4 | IN- — Inverting input |
| 腳位 5 | V+ — Positive supply |
| 腳位 6 | SHDN — Shutdown (active low) |
| 腳位 7 | VOCM — Output common-mode voltage set |
| 腳位 8 | OUT- — Negative differential output |
典型應用
LTC6363HMS8-2#PBF 適用於 6 應用s: SAR ADC Driver, Industrial Process Control, Medical Instrumentation, Communication Systems, Data Acquisition Systems, Battery-Powered Instruments.
SAR ADC Driver
The LTC6363HMS8-2#PBF is optimized to drive SAR ADCs, providing a differential signal with low noise and high bandwidth. Its fixed gain of 2V/V simplifies the signal chain, and its rail-to-rail outputs maximize the ADC's dynamic range. The low power consumption makes it suitable for portable instruments. With a 35 MHz bandwidth and 75V/µs slew rate, it can drive high-speed SAR ADCs without settling issues. The VOCM pin allows precise setting of the output common-mode voltage to match the ADC reference, ensuring optimal performance.
推薦
Industrial Process Control
In industrial process control, the LTC6363HMS8-2#PBF conditions sensor signals before digitization. Its precision (50µV offset, 100dB CMRR) ensures accurate measurement of temperature, pressure, and flow. The wide supply range (up to 11V) allows operation from 24V industrial rails with proper regulation. The -40°C to 125°C temperature range ensures reliability in harsh environments. The fixed gain of 2V/V reduces component count and improves system reliability.
推薦
Medical Instrumentation
The LTC6363HMS8-2#PBF is used in medical devices such as patient monitors and diagnostic equipment. Its low power (1.1mA) is critical for battery-powered devices. The high CMRR rejects common-mode interference from the human body, and the low noise ensures accurate biopotential measurements. The small 8-MSOP package fits compact designs. The fixed gain simplifies calibration, and the rail-to-rail outputs interface directly with ADCs in the signal chain.
推薦
Communication Systems
In communication systems, the LTC6363HMS8-2#PBF conditions IF or baseband signals before ADC conversion. Its 35 MHz bandwidth supports wideband signals, and the high slew rate preserves signal integrity. The differential output reduces even-order harmonics and improves SNR. The low power is beneficial in multi-channel systems. The fixed gain of 2V/V is useful for standardizing signal levels across channels.
推薦
Data Acquisition Systems
The LTC6363HMS8-2#PBF is a key component in data acquisition systems, providing signal conditioning for various sensors. Its precision and low noise ensure accurate digitization. The wide bandwidth allows it to handle fast transients, and the rail-to-rail outputs maximize ADC range. The shutdown pin enables power saving in duty-cycled systems. The fixed gain simplifies system design and reduces calibration effort.
推薦
Battery-Powered Instruments
The LTC6363HMS8-2#PBF is ideal for battery-powered instruments due to its low supply current of 1.1mA. It operates from a single 2.8V supply, making it compatible with Li-ion batteries. The shutdown pin further reduces power consumption to microamps when idle. The small package and minimal external components (no gain-setting resistors) save board space and extend battery life. The precision specifications ensure accurate measurements in portable devices.
推薦
推薦產品摘要
工程參考資料，適用於 LTC6363HMS8-2#PBF — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | LTC6363HMS8-2#TRPBF | LTC6363HMS8-1#PBF | LTC6363HMS8-0.5#PBF | LTC6363HMS8#PBF | THS4551 |
|---|---|---|---|---|---|---|
| Package | 8-MSOP | 8-MSOP | 8-MSOP | 8-MSOP | 8-MSOP | 8-MSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Gain | 2 V/V (fixed) | 2 V/V (fixed) | 1 V/V (fixed) | 0.5 V/V (fixed) | Adjustable (external resistors) | Adjustable (external resistors) |
| Bandwidth (-3dB) | 35 MHz | 35 MHz | 35 MHz | 35 MHz | 35 MHz | 150 MHz |
| Slew Rate | 75 V/µs | 75 V/µs | 75 V/µs | 44 V/µs | 75 V/µs | 220 V/µs |
| Input Bias Current | 100 nA | 100 nA | 100 nA | 100 nA | 100 nA | 1 µA |
| CMRR | 100 dB (DC) | 100 dB (DC) | 100 dB (DC) | 106 dB (DC) | 100 dB (DC) | 95 dB (DC) |
| Supply Current | 1.1 mA | 1.1 mA | 1.1 mA | 1.1 mA | 1.1 mA | 1.35 mA |
主要差異化特點
- Fixed gain of 2V/V with internal matched resistors (對比LTC6363HMS8#PBF)
- Lower input bias current (100 nA) (對比THS4551)
- Higher DC CMRR (100 dB) (對比THS4551)
設計說明
Ensure proper power supply decoupling. Place a 0.1µF ceramic capacitor and a 10µF tantalum capacitor close to the V+ and V- pins. The LTC6363 operates from 2.8V to 11V single supply or ±1.4V to ±5.5V dual supply. For best performance, keep the supply voltage stable and free of ripple.
For optimal noise performance, use a solid ground plane and keep the input and output traces short. The VOCM pin should be bypassed with a 0.1µF capacitor to ground to set the output common-mode voltage. The SHDN pin can be tied to V+ if shutdown is not used.
Do not exceed the absolute maximum supply voltage of 12V. The input common-mode range is limited; ensure the input signals stay within the specified range. When driving SAR ADCs, match the VOCM voltage to the ADC reference to avoid clipping. Also, consider the settling time of the amplifier when selecting the ADC sampling rate.
合規資訊
RoHS compliant as indicated by #PBF suffix. Other compliance data not specified in provided sources.
