LMP8350MA/NOPB - Ultra-Low Distortion ADC Driver | Texas Instruments
MPN: LMP8350MA/NOPB ✓ פעילLMP8350MA/NOPB סקירה
A fully-differential ADC driver is a special-purpose amplifier that converts a single-ended or differential input into a balanced differential output optimized for the differential input stage of precision ADCs. Within the signal-chain hierarchy (ADC driver -> amplifier -> analog front end -> signal chain), it provides output common-mode control, rejects even-order harmonics, and improves common-mode noise immunity ahead of the converter.
Key features include ultra-low distortion across a fully-differential signal path and three selectable operating modes controlled by a unique mode enable pin. As part of TI's PowerWise family, the high power mode is optimized for highest AC dynamic performance, while lower modes trade dynamic range for reduced power consumption - a flexibility few fixed-power differential drivers offer. The /NOPB suffix denotes a no-pull BOM with lead-free, RoHS-compliant plating suitable for global commercial and industrial builds.
Technically, the differential architecture inherently cancels common-mode noise and suppresses even-order distortion, which directly benefits THD and SNR when interfacing to precision SAR and delta-sigma converters. The three-mode design lets one footprint serve both battery-powered low-power data acquisition and high-AC-performance instrumentation, differentiating the LMP8350 from conventional fixed-bias fully-differential amplifiers.
Typical applications include high-speed precision data acquisition, industrial process control and PLC analog input modules, medical ultrasound front ends, communications receivers and software-defined radios, automated test equipment, and portable battery-powered instruments.
Design tip: realize the datasheet ultra-low-distortion performance only with a clean, symmetrical differential PCB layout, tight supply decoupling, and correct MODE pin configuration; verify pricing as of 2026-08-30 with current distributor stock at DigiKey and Mouser.
חלופות תחליף ישיר עבור LMP8350MA/NOPB — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם LMP8350MA/NOPB (אותו גורם צורה וטביעת רגל) — שונים ב Package / Case.
LMP8350MA/NOPB-Q1
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←THS4521ID
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
OPA1632AID
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
ADA4932-1YRZ
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
AD8138ARZ
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
LMP8350MA/NOPB דירוגים מרביים ומאפיינים חשמליים
| Type | ADC Driver IC (fully-differential amplifier) |
| Applications | Data Acquisition |
| Architecture | Fully-differential, PowerWise family with selectable power modes |
| Operating Modes | 3 (mode enable pin trades power for dynamic performance) |
| מארז / Case | 8-SOIC (0.154 in, 3.90 mm width, D suffix) |
| טווח טמפרטורת פעולה | -40C to +85C |
| Packaging | Tube |
| Lead Free Status | Lead Free |
| סטטוס RoHS | RoHS Compliant |
| Supplier Device Package | 8-SOIC |
| סוג הרכבה | Surface Mount |
תצורת פינים של LMP8350MA/NOPB
| פין 1 | +IN — Non-inverting input |
| פין 2 | -IN — Inverting input |
| פין 3 | VCM — Output common-mode voltage control |
| פין 4 | -VS / GND — Negative supply or ground reference |
| פין 5 | +VS — Positive power supply |
| פין 6 | OUT+ — Non-inverting output |
| פין 7 | OUT- — Inverting output |
| פין 8 | MODE — Mode enable pin - selects one of three power/performance modes |
יישומים טיפוסיים
LMP8350MA/NOPB מתאים עבור 6 יישוםs: Precision Data Acquisition, Industrial PLC Analog Input Modules, Medical Ultrasound Front Ends, Communications Receivers and SDR, Automated Test Equipment, Portable Battery-Powered Instruments.
Precision Data Acquisition
The LMP8350 is purpose-built for data acquisition front ends, per DigiKey's classification (ADC Driver IC, Data Acquisition). Its fully-differential output with common-mode control matches the differential input of precision SAR and delta-sigma converters, suppressing even-order harmonics and common-mode noise before the ADC. In high power mode, ultra-low distortion preserves converter SNR and THD; in low power mode, the PowerWise mode enable pin cuts consumption for battery-operated loggers. Place the driver close to the ADC with tight decoupling to realize full dynamic performance.
מומלץ
Industrial PLC Analog Input Modules
Industrial process control and PLC analog input modules benefit from the LMP8350's -40C to +85C rating and selectable power modes. The fully-differential signal path rejects common-mode noise from long field wiring, improving measurement integrity in electrically noisy factory environments. The mode enable pin lets one hardware design address both standard-performance I/O cards and low-power remote nodes. Its RoHS-compliant lead-free SOIC-8 package supports global industrial builds, and the automotive Q1 variant covers applications bridging factory and vehicle platforms.
מומלץ
Medical Ultrasound Front Ends
Medical ultrasound receivers demand extremely low harmonic distortion because second- and third-order products degrade image quality and dynamic range. The LMP8350's ultra-low-distortion fully-differential architecture suppresses even-order harmonics by design, while high power mode delivers maximum AC performance for continuous-wave Doppler and beamforming channels. The mode enable pin allows power-conscious operation between transmit bursts, extending battery life in portable ultrasound systems while preserving dynamic performance during active acquisition windows.
מומלץ
Communications Receivers and SDR
Software-defined radios and communications receivers require drivers whose distortion products fall below the converter noise floor. The LMP8350's ultra-low distortion specification keeps intermodulation out of the ADC passband, and its differential topology cancels common-mode LO feedthrough and supply noise. Selecting high power mode maximizes SFDR for wideband digitization; low power mode suits handheld radios between receive windows. The 8-SOIC footprint simplifies dense multi-channel receiver designs without exotic packages.
מומלץ
Automated Test Equipment
ATE signal chains cannot tolerate driver distortion that would mask device-under-test errors, making the LMP8350's ultra-low-distortion fully-differential output valuable ahead of precision digitizers. Three power modes let instrumentation trade speed for thermal headroom in dense racks: high mode for maximum linearity during AC tests, lower modes for DC continuity scans. The -40C to +85C range covers unconditioned test-floor environments, and SOIC-8 mounting supports cost-effective high-channel-count boards.
מומלץ
Portable Battery-Powered Instruments
The PowerWise mode enable pin is the LMP8350's key advantage in portable instruments: three operating modes trade power consumption for dynamic performance on demand. A handheld analyzer can run low power mode during idle monitoring, then switch to high power mode during a measurement sweep for full ultra-low-distortion performance. Combined with the compact 3.90 mm SOIC-8 package and modest quiescent consumption, one design spans benchtop-class linearity and field-portable battery life without changing components.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור LMP8350MA/NOPB — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | LMP8350MA/NOPB-Q1 | THS4521ID | ADA4932-1YRZ | AD8138ARZ |
|---|---|---|---|---|---|
| Package | 8-SOIC (D, 3.90 mm) | 8-SOIC (D) - same | 8-SOIC (D) | 8-SOIC (D) | 8-SOIC (D) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices | Analog Devices |
| Architecture | Fully-differential ADC driver | Fully-differential ADC driver | Fully-differential ADC driver | Fully-differential ADC driver | Fully-differential ADC driver |
| Selectable Power Modes | Yes - 3 modes via mode pin | Yes - 3 modes | No (fixed power) | No (fixed power) | No (fixed power) |
| Temperature Range | -40C to +85C | -40C to +125C (AEC-Q100) | -40C to +125C | -40C to +125C | -40C to +125C |
| Automotive Qualification | No | Yes (AEC-Q100) | No | No | No |
| Pin Compatibility | Reference | Pin-to-pin identical | Verify pinout before swap | Verify pinout before swap | Verify pinout before swap |
| RoHS / Lead Free | Compliant / Yes | Compliant / Yes | Compliant / Yes | Compliant / Yes | Compliant / Yes |
מבדילים עיקריים
- Three selectable power modes via mode enable pin (לעומתTHS4521ID)
- Automotive-qualified drop-in sibling (לעומתADA4932-1YRZ)
- Ultra-low distortion focus for precision converters (לעומתAD8138ARZ)
הערות תכנון
Realize the LMP8350's ultra-low-distortion performance only with a symmetrical differential PCB layout. Keep the OUT+ and OUT- traces equal length, matched impedance, and routed over a continuous ground plane. Place the driver within millimeters of the ADC inputs. Per TI datasheet SNOSB03, symmetry errors reintroduce even-order harmonics that the differential topology is designed to cancel.
Configure the MODE enable pin deliberately: high power mode gives maximum AC performance while lower modes trade dynamic range for reduced current draw (PowerWise family feature). A floating or mis-driven MODE pin yields unpredictable performance. Add 0.1 uF ceramic decoupling directly at +VS and -VS/GND pins plus bulk capacitance at the board entry point.
Do not assume cross-brand SOIC-8 fully-differential amplifiers (THS4521, ADA4932, AD8138) are pin-to-pin identical - the mode enable pin on the LMP8350 is unique and has no equivalent on fixed-power parts. Also, the standard /NOPB is rated -40C to +85C only; use the LMP8350MA/NOPB-Q1 for automotive or extended-temperature designs.
מידע על תאימות
RoHS Compliant and Lead Free per DigiKey and Digchip listings. AEC-Q100 applies only to the separate LMP8350MA/NOPB-Q1 variant.
