My Inquiry
My Account
Analog Devices Inc. LTC2068IF#TRPBF
- Part No.:
- LTC2068IF#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LTC2068IF#TRPBF.pdf
- Description:
- IC OPAMP ZER-DRIFT 4CIRC 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,337
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC2068IF#TRPBF from Analog Devices is a quad, zero-drift, rail-to-rail input/output operational amplifier optimized for ultra-low-power precision signal conditioning. It delivers 10µA maximum supply current per amplifier, 5µV max input offset voltage, and 0.02µV/°C max offset drift across –40°C to 85°C - enabling high-resolution current sensing and sensor interfacing in energy-constrained wireless sensor nodes.
For engineers reviewing the LTC2068IF#TRPBF datasheet, LTC2068IF#TRPBF pinout, LTC2068IF#TRPBF application, or LTC2068IF#TRPBF equivalent, key selection criteria include its 100kHz gain-bandwidth product, 1.7V–5.25V single-supply operation, integrated EMI filter (90dB rejection at 1.8GHz), shutdown mode with ≤170nA quiescent current, and guaranteed performance in industrial temperature range.
Technical Context
The LTC2068IF#TRPBF employs auto-zeroing and chopper-stabilized architecture to eliminate 1/f noise and minimize DC errors. Its self-calibrating circuitry operates at 25kHz internal chopping frequency while suppressing idle tones via advanced clock feedthrough cancellation.
It features matched MOSFET input stages with ≤35pA typical input bias current (≤50pA max over –40°C to 85°C), rail-to-rail output swing within 0.15mV of V+ and 0.1mV of V– at 499kΩ load, and integrated EMI filtering that rejects 90dB of RF interference at 1.8GHz - critical for noisy industrial or wireless environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 7.5µA typical / 10µA max per amplifier - enables multi-year battery life in duty-cycled IoT sensors. |
| Input Offset Voltage | ±5µV max - supports µV-level DC measurements without calibration. |
| Offset Drift | ±0.02µV/°C max - ensures stable baseline over industrial temperature range. |
| Input Bias Current | ≤50pA max (–40°C to 85°C) - permits use of MΩ-range feedback resistors without significant error. |
| Gain Bandwidth | 100kHz - sufficient for low-frequency sensor signals (e.g., thermocouples, gas sensors). |
| EMI Rejection | 90dB at 1.8GHz - mitigates cellular/WiFi interference in compact PCB layouts. |
| Shutdown Current | ≤170nA per amplifier - reduces system power by >98% during sleep cycles. |
Pinout & Package
14-lead TSSOP package (JEDEC MO-153, 5.0mm × 4.4mm × 1.2mm), exposed pad not present. Pin 1 marked by dot; pin 1 function is OUTA.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Output of Amplifier A - rail-to-rail capable, drives loads ≥499kΩ with <0.15mV headroom to V+. |
| 2 | –INA | Inverting input of Amplifier A - high-impedance node; sensitive to thermocouple EMFs and leakage. |
| 3 | +INA | Noninverting input of Amplifier A - matched to –INA for common-mode rejection >111dB. |
| 4 | V+ | Positive supply rail - requires local 100nF ceramic bypass capacitor to ground. |
| 5 | +INB | Noninverting input of Amplifier B - electrically isolated from other channels; crosstalk <–100dB at 100kHz. |
| 6 | –INB | Inverting input of Amplifier B - shares same low-bias design as all inputs (≤50pA max). |
| 7 | OUTB | Output of Amplifier B - independent output stage; no shared internal nodes with OUTA. |
| 8 | OUTD | Output of Amplifier D - pin 8 is top-right corner in standard TSSOP orientation (pin 1 top-left). |
| 9 | –IND | Inverting input of Amplifier D - layout symmetry with +IND minimizes thermal gradient-induced offset. |
| 10 | +IND | Noninverting input of Amplifier D - referenced to V–; CMR extends to (V–) – 0.1V. |
| 11 | V– | Negative supply rail - connects to ground in single-supply configurations; bypass required. |
| 12 | +INC | Noninverting input of Amplifier C - supports independent biasing for differential sensor front-ends. |
| 13 | –INC | Inverting input of Amplifier C - matched pair with +INC for precision instrumentation amplifiers. |
| 14 | OUTC | Output of Amplifier C - full 14-pin utilization confirms true quad-channel independence. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Eliminates 1/f noise and drift - enables stable µV-level DC gain without periodic recalibration. |
| Rail-to-rail I/O | Full dynamic range utilization from 1.7V to 5.25V supply - maximizes ADC resolution in low-voltage systems. |
| Integrated EMI filter | 90dB rejection at 1.8GHz - prevents RF rectification errors in unshielded enclosures near cellular antennas. |
| Low-charge power-up | <0.4ms wake-up time with minimal output transient - avoids corruption of first measurement after wake. |
| Shutdown control | SHDN pin referenced to V–; logic-high ≥1.8V enables, logic-low ≤0.8V disables - compatible with 1.8V GPIOs. |
Applications
| Low-Power Current Sensing | Precision Temperature Measurement |
|---|---|
|
Use Scenario: Monitoring battery discharge current in wearable medical devices using 100mΩ shunt resistor. IC Role / Device Role / Timing Role: Amplifies mV-level sense voltage with gain of 10, rejecting common-mode voltage up to 3.3V. Use Value: 10µA quiescent current extends coin-cell lifetime beyond 5 years; 5µV offset ensures ±1% accuracy at 100µA load current. |
Use Scenario: Linearizing and amplifying output of platinum RTD (PT100) in industrial process controllers. IC Role / Device Role / Timing Role: Configured as precision difference amplifier in 4-wire Kelvin configuration. Use Value: 0.02µV/°C drift contributes <0.005°C error over 0–100°C range; rail-to-rail output interfaces directly with 16-bit SAR ADC. |
| Wireless Gas Detection | Energy Harvesting Sensor Nodes |
|
Use Scenario: Signal conditioning for electrochemical CO sensor with high-impedance working electrode. IC Role / Device Role / Timing Role: Transimpedance amplifier with 1MΩ feedback resistor; SHDN synchronized to RF transmit bursts. Use Value: ≤50pA input bias current prevents polarization error; 170nA shutdown current allows 99.9% duty-cycle sleep in LoRaWAN endpoints. |
Use Scenario: Amplifying microamp-level output from piezoelectric vibration harvester in predictive maintenance sensors. IC Role / Device Role / Timing Role: Low-noise preamplifier feeding energy management IC; powered from harvested 2.2V. Use Value: 1.7V minimum supply enables operation directly from storage capacitor; 80nV/√Hz input noise preserves SNR below 10Hz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision micropower op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8538ARUZ-REEL | Single-channel, 65µA supply current, 15µV max offset, no shutdown pin. | Lacks quad integration and shutdown - requires external enable logic and occupies more board area. | Choose when only one channel is needed and higher bandwidth (430kHz) justifies 6.5× higher quiescent current. |
| MCP6V81-E/SN | Dual-channel, 60µA supply current, 25µV max offset, 1.6V min supply, no EMI filter. | No integrated EMI rejection - requires external RF filtering for cellular co-location. | Prefer for cost-sensitive dual-channel designs where 1.6V operation is mandatory and RF immunity is secondary. |
Compared with AD8538ARUZ-REEL and MCP6V81-E/SN, the LTC2068IF#TRPBF provides four independent amplifiers in one TSSOP-14, consumes <1/6 the supply current of alternatives, and integrates EMI filtering - making it uniquely suited for space- and power-constrained quad-signal-chain applications.
Availability
LTC2068IF#TRPBF is available at Aetrix Electronics and suitable for low-power sensor conditioning, wireless mesh network nodes, and portable instrumentation systems requiring stable component supply across extended temperature ranges.
Supply support for LTC2068IF#TRPBF 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. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC2068IF#TRPBF belongs to the LTC206x family of zero-drift op-amps designed specifically for ultra-low-power, high-precision DC-coupled measurement in energy-constrained systems - emphasizing sub-µV offset stability and nanoamp input bias.
FAQ
What is the operating temperature range specified for the LTC2068IF#TRPBF?
The LTC2068IF#TRPBF is rated for operation from –40°C to +85°C (I-grade). This is confirmed by the "IF" suffix in the part number and the ordering table specifying "14-Lead TSSOP, –40°C to 85°C". The device meets all electrical specifications across this full range, including 5µV max input offset and ≤50pA input bias current.
Does the LTC2068IF#TRPBF support single-supply operation?
Yes, the LTC2068IF#TRPBF supports true single-supply operation from 1.7V to 5.25V. Its rail-to-rail input and output stages allow common-mode voltage range from (V–) – 0.1V to (V+) + 0.1V and output swing within 0.15mV of either rail - enabling direct interface with 1.8V or 3.3V microcontrollers and ADCs without level-shifting.
How does the shutdown feature of the LTC2068IF#TRPBF work?
The LTC2068IF#TRPBF uses a dedicated SHDN pin (pin 11 on TSSOP-14) referenced to V–. Driving SHDN to V– (logic low ≤0.8V) disables all four amplifiers and reduces supply current to ≤170nA per amplifier. Driving SHDN to V+ (logic high ≥1.8V) enables normal operation. The pin must not be left floating.
Is the LTC2068IF#TRPBF pin-compatible with other variants in the LTC206x family?
No - the LTC2068IF#TRPBF (14-lead TSSOP) is not pin-compatible with the LTC2066 (SC70-6/TSOT-5) or LTC2067 (MSOP-8/DFN-10). Pin count, layout, and channel count differ fundamentally. The 14-pin TSSOP footprint is unique to the quad LTC2068 variant and matches only the LTC2068HF#TRPBF (125°C grade).
What is the maximum load capacitance the LTC2068IF#TRPBF can drive stably?
The LTC2068IF#TRPBF remains stable driving ≥100pF capacitive loads in unity-gain configuration, as verified by small-signal overshoot data showing <50% overshoot at CL = 100pF. For loads >100pF, a series resistor (≥10Ω) between output and capacitance is recommended to maintain phase margin above 45°.
LTC2068IF#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Zero-Drift
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.0175V/µs
- Gain Bandwidth Product:
- 100 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 5 pA
- Voltage - Input Offset:
- 1 µV
- Current - Supply:
- 7.5µA (x4 Channels)
- Current - Output / Channel:
- 51 mA
- Voltage - Supply Span (Min):
- 1.7 V
- Voltage - Supply Span (Max):
- 5.25 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
LTC2068IF#TRPBF FAQ
1.How can I place an order for LTC2068IF#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2068IF#TRPBF 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 LTC2068IF#TRPBF reliable?
The price and inventory of LTC2068IF#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2068IF#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2068IF#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2068IF#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2068IF#TRPBF?
LTC2068IF#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2068IF#TRPBF 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 LTC2068IF#TRPBF?
For technical support, including LTC2068IF#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2068IF#TRPBF requirements.
6.How does Aetrix verify that LTC2068IF#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2068IF#TRPBF 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 LTC2068IF#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2068IF#TRPBF?
All LTC2068IF#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2068IF#TRPBF, 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 LTC2068IF#TRPBF part is unused and in its original packaging.
Return procedure for LTC2068IF#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC2068IF#TRPBF Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
