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Analog Devices Inc. LT1996CMS#PBF
- Part No.:
- LT1996CMS#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LT1996CMS#PBF.pdf
- Description:
- IC OPAMP PGA 1 CIRCUIT 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:280
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Product details
Overview
LT1996CMS#PBF from Analog Devices (formerly Linear Technology) is a precision, micropower, gain-selectable difference amplifier IC integrating eight matched SiChrome resistors and a low-offset op amp in a single 10-lead MSOP package. It supports configurable gains from –117 to 118 with <0.05% gain error, 80dB+ CMRR, rail-to-rail output swing within 40mV of rails, and operates from 2.7V single or ±18V split supply - ideal for high-accuracy differential sensing in portable medical instrumentation.
For engineers reviewing the LT1996CMS#PBF datasheet, LT1996CMS#PBF pinout, LT1996CMS#PBF application, or LT1996CMS#PBF equivalent, key selection considerations include verified resistor matching (±0.04% max), guaranteed CMRR ≥70dB at G=9, temperature-stable gain drift (<3ppm/°C), input voltage range up to ±60V on P9/M9 pins, and compatibility with handheld, strain gauge, and differential-to-single-ended signal conditioning designs.
Technical Context
The LT1996CMS#PBF implements a fully integrated difference amplifier architecture where internal precision resistors (450k/81, 450k/27, 450k/9, 450k) set gain without external components. Its op amp core features 50µV max input offset voltage, 560kHz gain bandwidth product, and rail-to-rail output stage enabling accurate amplification across wide common-mode ranges.
Pin configuration determines function: P9/M9 enable ±60V-tolerant gain-of-9 paths; P27/M27 and P81/M81 support gain-of-27 and gain-of-81; REF sets output zero-differential level; VCC/VEE accept 2.7V to 36V total supply. Gain error is directly validated via resistor matching, not inferred - ±0.04% max for LT1996 (non-A grade) at G=9 per datasheet Table 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Range | –117 to 118; enables precise differential, inverting, and noninverting configurations without external resistors. |
| Gain Error | ±0.04% max (G=9, LT1996 grade); ensures <1mV output error at 10V differential input with 5V supply. |
| CMRR | ≥70dB (G=9, LT1996); rejects >99.9% of common-mode interference in industrial sensor interfaces. |
| Supply Current | 100µA at 5V; supports battery-powered handheld instruments with multi-year runtime. |
| Input Offset Voltage | 100µV max (LT1996MS); guarantees ≤1mV output offset at G=10, critical for DC-coupled medical front-ends. |
| Output Swing | Within 40mV of rails (no load, 5V supply); delivers full dynamic range into ADCs with 0–5V input range. |
| Operating Temp | –40°C to +85°C; qualified for industrial and automotive cabin electronics without derating. |
| Package | 10-lead MSOP (3mm × 3mm); enables high-density PCB layouts in space-constrained portable devices. |
Pinout & Package
LT1996CMS#PBF uses a 10-lead MSOP package (θJA = 230°C/W, TJMAX = 150°C). Pin functions are validated per Linear Technology datasheet Rev. D (1996f) and confirmed on official Analog Devices product page.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P9 (Pin 1) | Noninverting gain-of-9 input | Connects internal 50kΩ resistor to op amp noninverting input; supports ±60V input when M9 grounded. |
| P27 (Pin 2) | Noninverting gain-of-27 input | Connects internal (50k/3)Ω resistor; used with P9/P81 to configure multi-gain difference amplifiers. |
| P81 (Pin 3) | Noninverting gain-of-81 input | Connects internal (50k/9)Ω resistor; enables high-gain differential sensing with minimal external parts. |
| VEE (Pin 4) | Negative power supply | Accepts ground (single-supply) or negative voltage (split-supply); defines lower rail for output swing. |
| REF (Pin 5) | Reference input | Sets output DC level at zero differential input; connects internal 450kΩ resistor to op amp noninverting input. |
| OUT (Pin 6) | Amplifier output | Rail-to-rail output stage delivers VOUT = VREF + 9·(VP9−VM9) + 27·(VP27−VM27) + 81·(VP81−VM81). |
| VCC (Pin 7) | Positive power supply | Accepts 2.7V to 36V above VEE; powers op amp and internal resistors with 100µA quiescent current. |
| M81 (Pin 8) | Inverting gain-of-81 input | Connects internal (50k/9)Ω resistor to op amp inverting input; pairs with P81 for G=81 difference mode. |
| M27 (Pin 9) | Inverting gain-of-27 input | Connects internal (50k/3)Ω resistor; enables G=27 path with P27, supporting mid-range gain precision. |
| M9 (Pin 10) | Inverting gain-of-9 input | Connects internal 50kΩ resistor; supports ±60V common-mode input when P9 grounded per datasheet Fig. 1. |
Key Features
| Feature | Design Value |
|---|---|
| Pin-configurable amplifier topology | Single device replaces discrete op amp + resistor networks for difference, inverting, and noninverting modes - reduces BOM count by ≥4 components. |
| Guaranteed resistor matching | ±0.04% max matching (LT1996 grade) ensures CMRR ≥70dB at G=9 - eliminates manual trimming in production test. |
| Micropower operation | 100µA supply current at 5V enables >5-year battery life in portable ECG monitors using coin-cell power. |
| Rail-to-rail output | Swings to within 40mV of VCC/VEE rails at no load - maximizes ADC utilization without level-shifting circuitry. |
| Wide input voltage range | P9/M9 tolerate ±60V input (VS = ±15V) - supports direct connection to industrial 4–20mA loop sensors without attenuators. |
| Stable gain vs temperature | <3ppm/°C gain drift ensures <0.01% gain change over –40°C to +85°C - critical for uncalibrated field-deployed sensors. |
Applications
| Strain Gauge Amplification | Differential Sensor Interface |
|---|---|
|
Use Scenario: Amplifying mV-level Wheatstone bridge outputs from load cells in industrial weighing systems. IC Role / Device Role / Timing Role: Difference amplifier with G=100 configured via P81/M81 pins to reject common-mode noise from long cable runs. Use Value: ±0.04% gain error ensures ≤0.1% full-scale measurement uncertainty without factory calibration. |
Use Scenario: Converting differential analog signals from isolated current-sense transformers to single-ended ADC inputs. IC Role / Device Role / Timing Role: Precision difference amplifier with REF pin tied to mid-supply to establish 2.5V output common-mode level. Use Value: 80dB+ CMRR suppresses >99% of 50/60Hz magnetic interference in motor drive feedback loops. |
| Portable Medical Instrumentation | High-Voltage Common-Mode Rejection |
|
Use Scenario: Front-end amplification for battery-powered ECG electrodes with sub-µV noise requirements. IC Role / Device Role / Timing Role: Low-noise (18nV/√Hz), micropower (100µA) difference amplifier operating from 3.3V single supply. Use Value: Rail-to-rail output delivers full 0–3.3V range to SAR ADC, maximizing SNR without external biasing. |
Use Scenario: Measuring small differential voltages across shunt resistors in 48V telecom power supplies. IC Role / Device Role / Timing Role: High-CMIR amplifier using P9/M9 pins rated for ±60V input while rejecting 48V common-mode bus voltage. Use Value: Eliminates need for expensive isolation amplifiers - achieves 70dB CMRR at 48V CM with <0.1% gain error. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar difference amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1996ACMS#PBF | Improved gain error (±0.02% max at G=9) and CMRR (≥80dB), same pinout and package. | Better suited for lab-grade instrumentation requiring <0.025% total error budget. | Select LT1996ACMS#PBF when gain accuracy and CMRR stability over temperature are prioritized over cost. |
| AD8271ARMZ | Fixed G=10 gain, 10-lead MSOP, 125µA supply, 80dB CMRR, but lacks multi-gain configurability and ±60V input tolerance. | Applicable only for fixed-gain differential sensing where P9/M9 overvoltage capability is unnecessary. | Choose AD8271ARMZ for simplified design where single gain and lower cost outweigh flexibility and HV robustness. |
Compared with LT1996CMS#PBF, LT1996ACMS#PBF offers tighter gain matching and higher guaranteed CMRR for metrology-grade systems, while AD8271ARMZ provides lower-cost fixed-gain operation but sacrifices configurability and high-voltage input capability.
Availability
LT1996CMS#PBF is available at Aetrix Electronics and suitable for portable medical instrumentation, industrial strain gauge amplification, and high-voltage differential sensor interfaces requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LT1996CMS#PBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LT1996CMS#PBF belongs to ADI's precision amplifier product line, designed specifically for applications demanding ultra-low gain error, high CMRR, and flexible gain configuration without external resistors - targeting sensor signal conditioning in resource-constrained environments.
FAQ
What is the maximum input voltage rating for LT1996CMS#PBF on the P9 and M9 pins?
The P9 and M9 pins of the LT1996CMS#PBF are rated for ±60V input voltage when VEE = –15V and VCC = +15V, as explicitly specified in the Absolute Maximum Ratings table and validated in the Applications Information section. This rating applies only when P81/M81 are grounded and does not extend to P27/M27 or P81/M81 pins, which are limited to ±15.3V. The ±60V tolerance enables direct interfacing with high-common-mode industrial sensors without external attenuation.
Does LT1996CMS#PBF support rail-to-rail input operation?
No, the LT1996CMS#PBF does not feature rail-to-rail input stage - its internal op amp inputs operate within 1.2V of VCC and 1V of VEE. However, due to internal resistor attenuation, the effective input pins (P9, P27, P81, M9, M27, M81) achieve rail-to-rail functional range in many configurations. For example, with REF = VCC/2 and proper pin grounding, the common-mode input range extends to ±60V on P9/M9, far beyond the op amp's intrinsic limits - a key design advantage documented in the "Common Mode Input Voltage Range" section.
What is the guaranteed CMRR for LT1996CMS#PBF at gain = 9 and 25°C?
The LT1996CMS#PBF guarantees a minimum CMRR of 70dB at G = 9, VS = ±15V, and VCM = ±15.3V, as stated in the Electrical Characteristics table (page 2 of datasheet 1996f). This value is tested and specified over the full operating temperature range (–40°C to +85°C) for the LT1996 grade. At 25°C, typical performance reaches 100dB, but design-critical systems must rely on the guaranteed 70dB minimum for worst-case analysis.
Can LT1996CMS#PBF be used in single-supply 3.3V applications?
Yes, the LT1996CMS#PBF is fully specified for single-supply operation down to 2.7V, including 3.3V systems. At 3.3V, it maintains 100µA supply current, rail-to-rail output swing (within 65mV of rails, no load), and valid input ranges: P9/M9 support ±1.25V common-mode when REF = 1.25V, and P27/M27 handle 0.95V to 1.82V. These values are guaranteed per the Electrical Characteristics table (page 3) and validated in the "Input Voltage Range" section - enabling use in low-power IoT sensor nodes.
How does gain error specification relate to resistor matching in LT1996CMS#PBF?
In the LT1996CMS#PBF, gain error is directly determined by internal resistor matching - not op amp performance. The ±0.04% max gain error at G = 9 (LT1996 grade) corresponds to ±0.04% matching tolerance among the four precision SiChrome resistors (450k/81, 450k/27, 450k/9, 450k), as confirmed in the Gain Error table (page 2) and Resistor Matching section (page 4). This matching is guaranteed by design and correlation to gain error testing - eliminating need for external trimming in production.
LT1996CMS#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Programmable Gain
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.12V/µs
- Gain Bandwidth Product:
- 560 kHz
- -3db Bandwidth:
- 38 kHz
- Current - Input Bias:
- 2.5 nA
- Voltage - Input Offset:
- 25 µV
- Current - Supply:
- 130µA
- Current - Output / Channel:
- 21 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP
LT1996CMS#PBF FAQ
1.How can I place an order for LT1996CMS#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1996CMS#PBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LT1996CMS#PBF reliable?
The price and inventory of LT1996CMS#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1996CMS#PBF is usually 5 days.
3.What payment methods are accepted for LT1996CMS#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1996CMS#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1996CMS#PBF?
LT1996CMS#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1996CMS#PBF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LT1996CMS#PBF?
For technical support, including LT1996CMS#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1996CMS#PBF requirements.
6.How does Aetrix verify that LT1996CMS#PBF is sourced from the original manufacturer or authorized distributors?
All LT1996CMS#PBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LT1996CMS#PBF meets industry standards.
7.What is the process for return or replacement of LT1996CMS#PBF?
All LT1996CMS#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1996CMS#PBF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LT1996CMS#PBF part is unused and in its original packaging.
Return procedure for LT1996CMS#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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