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Analog Devices Inc. LT1996AIDD#PBF
- Part No.:
- LT1996AIDD#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LT1996AIDD#PBF.pdf
- Description:
- IC OPAMP PGA 1 CIRCUIT 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,457
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Product details
Overview
LT1996AIDD#PBF from Analog Devices (formerly Linear Technology) is a precision, gain-selectable difference amplifier IC integrating eight matched SiChrome resistors and a low-offset op amp in a single 10-lead DFN 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 medical instrumentation and strain gauge interfaces.
For engineers reviewing the LT1996AIDD#PBF datasheet, LT1996AIDD#PBF pinout, LT1996AIDD#PBF application, or LT1996AIDD#PBF equivalent, key selection criteria include verified resistor matching (±0.02% typ), guaranteed CMRR ≥80dB at G=9, input voltage range up to ±60V on P9/M9 pins, and validated performance across –40°C to 85°C with 100µA quiescent current.
Technical Context
The LT1996AIDD#PBF implements a fully integrated difference amplifier architecture where internal 450kΩ-based resistor networks (450k/9, 450k/27, 450k/81, and 450k) are connected to dedicated input pins (P9/P27/P81/M9/M27/M81), enabling precise gain configuration without external components. Its op amp core features 50µV max input offset voltage, 560kHz gain bandwidth product, and rail-to-rail output stage.
Gain is set by pin strapping: connecting specific P/M inputs to VEE, VCC, REF, or floating determines noise gain and signal path topology. Resistor matching drift is <3ppm/°C, and CMRR remains ≥90dB at G=27 over temperature - enabled by monolithic SiChrome resistor integration and laser-trimmed matching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Range | Configurable from –117 to 118 via pin-strapped resistor network; enables difference, inverting, and noninverting modes without external components. |
| Gain Error | ±0.02% (typ), ±0.05% (max) at G=81 - ensures high-accuracy signal conditioning in precision measurement systems. |
| CMRR | ≥80dB (min) at G=9; ≥90dB (min) at G=27 - critical for rejecting common-mode noise in industrial sensor interfaces. |
| Supply Range | 2.7V single or ±18V split supply - supports battery-powered handheld instruments and high-voltage industrial front-ends. |
| Quiescent Current | 100µA at 5V - enables micropower operation in portable and energy-constrained applications. |
| Input Offset Voltage | 50µV (max) - minimizes DC error in low-level signal amplification such as thermocouple or bridge sensor outputs. |
| Output Swing | Within 40mV of either rail at no load - maximizes dynamic range in low-voltage systems like 3.3V or 5V data acquisition. |
Pinout & Package
LT1996AIDD#PBF is housed in a 10-lead (3mm × 3mm) plastic DFN package with underside metal pad connected to VEE (optional PCB connection). Thermal resistance θJA = 160°C/W; max junction temperature = 125°C.
| 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 overvoltage tolerance when P81/M81 grounded. |
| P27 (Pin 2) | Noninverting gain-of-27 input | Connects internal (50k/3)Ω resistor; used with P9/P81 to configure composite gains in difference amplifier mode. |
| P81 (Pin 3) | Noninverting gain-of-81 input | Connects internal (50k/9)Ω resistor; enables highest precision gain settings with minimal resistor mismatch impact. |
| VEE (Pin 4) | Negative power supply | Ground in single-supply operation; negative rail in split-supply; underside metal pad tied to this node for thermal management. |
| REF (Pin 5) | Reference input | Sets output zero-differential level (VOUT = VREF + G·ΔVIN); connects internal 450kΩ resistor to op amp noninverting input. |
| OUT (Pin 6) | Amplifier output | Rail-to-rail output capable of sourcing/sinking ≥8mA; settles to 0.01% in 85µs at G=9 with 2V step. |
| VCC (Pin 7) | Positive power supply | Accepts 2.7V to 36V above VEE; supplies internal op amp and resistor network; no external decoupling required for basic operation. |
| M81 (Pin 8) | Inverting gain-of-81 input | Connects internal (50k/9)Ω resistor to op amp inverting input; pairs with P81 for balanced high-gain difference amplification. |
| M27 (Pin 9) | Inverting gain-of-27 input | Connects internal (50k/3)Ω resistor; used with M9/M81 to define feedback ratio and noise gain in configured topologies. |
| M9 (Pin 10) | Inverting gain-of-9 input | Connects internal 50kΩ resistor; supports ±60V common-mode input when paired with P9 in high-voltage difference amplifier designs. |
Key Features
| Feature | Design Value |
|---|---|
| Pin-configurable amplifier topology | Single device supports difference, inverting, and noninverting modes via input pin strapping - eliminates need for multiple discrete op amp/resistor combinations. |
| Matched resistor network | Internal SiChrome resistors matched to ±0.02% (typ), enabling >80dB CMRR and <0.05% gain error without calibration or trimming. |
| Rail-to-rail output stage | Swings within 40mV of VCC or VEE under no load - preserves full signal headroom in low-voltage embedded systems. |
| Micropower operation | 100µA supply current at 5V - extends battery life in portable test equipment and wearable medical sensors. |
| Wide input voltage range | P9/M9 pins tolerate ±60V input with VEE = –15V and P81/M81 grounded - supports direct interfacing to high-voltage industrial transducers. |
Applications
| Medical Instrumentation | Strain Gauge Amplifiers |
|---|---|
Use Scenario: Amplifying low-level bio-potential signals (e.g., ECG, EEG) with high common-mode noise rejection in battery-powered patient monitors. IC Role / Device Role / Timing Role: Precision difference amplifier configured at G=100 to reject 50/60Hz mains interference while preserving microvolt-level signal integrity. Use Value: 80dB+ CMRR and 50µV max offset ensure diagnostic-grade accuracy without external trimming or matched resistor networks. | Use Scenario: Conditioning mV-level Wheatstone bridge outputs from load cells and pressure sensors in industrial weighing systems. IC Role / Device Role / Timing Role: Difference amplifier with G=81, referenced to mid-supply, delivering ratiometric output proportional to excitation voltage and bridge imbalance. Use Value: ±0.02% resistor matching guarantees stable gain over temperature (3ppm/°C drift), eliminating recalibration in harsh environments. |
| Differential to Single-Ended Conversion | Rail-to-Rail Signal Conditioning |
Use Scenario: Converting differential LVDS or RS-422 signals to single-ended levels for ADC input in programmable logic controllers. IC Role / Device Role / Timing Role: High-speed difference amplifier (G=9) with 38kHz bandwidth and 8µs rise time, driving SAR ADC reference buffers. Use Value: Guaranteed 80dB CMRR at 1kHz suppresses electromagnetic coupling in noisy factory floor wiring. | Use Scenario: Amplifying sensor outputs in 3.3V IoT edge nodes where supply headroom is limited and full-scale swing is required. IC Role / Device Role / Timing Role: Noninverting amplifier (G=10) with rail-to-rail output, powered from single 3.3V supply and referenced to 1.65V. Use Value: Output swings to within 40mV of 0V and 3.3V rails, maximizing SNR for 12-bit ADC digitization without level-shifting circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision difference amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1991CMS#PBF | Lower gain range (–13 to 14); 10-lead MSOP package; higher quiescent current (220µA); no ±60V input capability on P9/M9. | Targeted at lower-gain, cost-sensitive industrial controls where extreme CMRR and overvoltage tolerance are not required. | Select LT1991CMS#PBF only if gain ≤14 suffices and board space allows MSOP; avoid for high-CMRR medical or high-voltage sensor front-ends. |
| AD8271ARMZ | Fixed G=1 difference amplifier; 8-lead SOIC; 120dB min CMRR; 1.2MHz bandwidth; 350µA supply current; no pin-strappable gain. | Optimized for unity-gain, high-bandwidth differential acquisition (e.g., motor phase current sensing), not multi-gain programmability. | Choose AD8271ARMZ when fixed G=1 and maximum CMRR/bandwidth are prioritized over gain flexibility and micropower operation. |
Compared with LT1991CMS#PBF and AD8271ARMZ, the LT1996AIDD#PBF uniquely combines ultra-low power (100µA), wide gain configurability (–117 to 118), ±60V input tolerance, and monolithic resistor matching - making it irreplaceable for portable, multi-range, high-accuracy sensor signal chains requiring minimal BOM count.
Availability
LT1996AIDD#PBF is available at Aetrix Electronics and suitable for medical instrumentation, strain gauge interfaces, differential-to-single-ended conversion, and rail-to-rail signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LT1996AIDD#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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors.
The LT1996AIDD#PBF belongs to Linear's precision amplifier family, designed specifically for applications demanding high accuracy, low power, and simplified system design through integrated matched resistors and flexible gain configuration.
FAQ
What is the maximum input voltage the LT1996AIDD#PBF can withstand on its P9 and M9 pins?
The LT1996AIDD#PBF supports ±60V input voltage on P9 and M9 pins when P81 and M81 are grounded and the supply is ±15V. This overvoltage tolerance is enabled by isolation of the 50kΩ resistors from the substrate - allowing direct interface with high-voltage industrial transducers without external protection circuitry. Other inputs (P27, M27, P81, M81) are limited to ±15.5V due to ESD diode clamping.
Does the LT1996AIDD#PBF require external resistors to achieve its specified gain accuracy?
No, the LT1996AIDD#PBF does not require external resistors to achieve its specified gain accuracy. It integrates eight precision-matched SiChrome resistors (450k/9, 450k/27, 450k/81, and 450k) directly into the IC. Gain is set solely by pin strapping (grounding, floating, or connecting P/M inputs to VEE/VCC/REF), and the ±0.02% typical resistor matching ensures <0.05% gain error without calibration or external components.
What is the guaranteed common-mode rejection ratio (CMRR) of the LT1996AIDD#PBF across temperature?
The LT1996AIDD#PBF guarantees ≥80dB CMRR at G=9 and ≥90dB CMRR at G=27 over the full –40°C to 85°C operating temperature range. This performance is achieved through monolithic resistor matching with <3ppm/°C temperature coefficient and laser-trimmed layout symmetry - ensuring stable rejection of power supply noise and electromagnetic interference in automotive and industrial environments.
Can the LT1996AIDD#PBF operate from a single 3.3V supply?
Yes, the LT1996AIDD#PBF operates from a single 3.3V supply (VCC = 3.3V, VEE = 0V). Its minimum supply voltage is 2.7V, and the rail-to-rail output swings to within 40mV of both rails. When configured as a noninverting amplifier with REF tied to 1.65V, it delivers full-scale output from 0.04V to 3.26V - making it suitable for low-voltage IoT sensor nodes and portable instrumentation.
How does the LT1996AIDD#PBF achieve 100µA quiescent current while maintaining 560kHz gain bandwidth?
The LT1996AIDD#PBF achieves 100µA quiescent current with 560kHz gain bandwidth through optimized op amp biasing and low-power SiChrome resistor design. The internal op amp uses a carefully balanced transconductance-to-capacitance ratio, and the resistor network is sized to minimize Johnson noise contribution while maintaining matching. This enables micropower operation without sacrificing bandwidth - a key differentiator versus conventional precision op amps that trade off speed for current consumption.
LT1996AIDD#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- 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:
- 15 µV
- Current - Supply:
- 130µA
- Current - Output / Channel:
- 21 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-DFN (3x3)
LT1996AIDD#PBF FAQ
1.How can I place an order for LT1996AIDD#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1996AIDD#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 LT1996AIDD#PBF reliable?
The price and inventory of LT1996AIDD#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1996AIDD#PBF is usually 5 days.
3.What payment methods are accepted for LT1996AIDD#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1996AIDD#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1996AIDD#PBF?
LT1996AIDD#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1996AIDD#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 LT1996AIDD#PBF?
For technical support, including LT1996AIDD#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1996AIDD#PBF requirements.
6.How does Aetrix verify that LT1996AIDD#PBF is sourced from the original manufacturer or authorized distributors?
All LT1996AIDD#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 LT1996AIDD#PBF meets industry standards.
7.What is the process for return or replacement of LT1996AIDD#PBF?
All LT1996AIDD#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1996AIDD#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 LT1996AIDD#PBF part is unused and in its original packaging.
Return procedure for LT1996AIDD#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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