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Analog Devices Inc. LTC6079IDHC#PBF
- Part No.:
- LTC6079IDHC#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LTC6079IDHC#PBF.pdf
- Description:
- IC CMOS 4 CIRCUIT 16DFN
- Quantity:
- Payment:
- Shipping:
Inventory:748
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Product details
Overview
LTC6079IDHC#PBF from Analog Devices (formerly Linear Technology) is a quad micropower precision CMOS operational amplifier with rail-to-rail input/output swing, 25µV max offset voltage at 25°C, 0.7µV/°C max offset drift, and 54µA per amplifier supply current at 3V - optimized for high-impedance sensor signal conditioning in battery-powered instrumentation.
For engineers reviewing the LTC6079IDHC#PBF datasheet, LTC6079IDHC#PBF pinout, LTC6079IDHC#PBF application, or LTC6079IDHC#PBF equivalent, key selection criteria include ultra-low input bias current (≤50pA at ≤85°C), 95dB min CMRR, 100dB min PSRR, 16nV/√Hz input noise density, and operation from 2.7V to 5.5V across –40°C to 125°C.
Technical Context
The LTC6079IDHC#PBF integrates four independent precision amplifiers sharing a common 16-pin DFN package with exposed thermal pad connected to V–. Its input stage combines PMOS and NMOS differential pairs to achieve true rail-to-rail common-mode range (V– to V+), enabling direct interfacing with low-voltage ADCs and reference buffers without level-shifting.
Each amplifier features active shutdown control (SHDN_A/B/C/D pins), delivering <2µA shutdown current per channel while maintaining high-impedance output state. The device is characterized over full temperature range for critical parameters including offset voltage, drift, CMRR, and PSRR - ensuring stability in thermally demanding industrial and automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Offset Voltage | 25µV at 25°C - enables µV-level threshold detection without trimming |
| Max Offset Drift | 0.7µV/°C - ensures <1µV total drift over 0–70°C ambient range |
| Input Bias Current | ≤50pA at ≤85°C - preserves accuracy with GΩ-range feedback/sensor impedances |
| Supply Current | 54µA per amplifier at 3V - supports >1-year battery life in 3.3V coin-cell systems |
| CMRR / PSRR | 95dB / 100dB min - rejects power supply ripple and common-mode interference in noisy environments |
| Input Noise Density | 16nV/√Hz at 1kHz - suitable for low-frequency precision measurements below 10kHz |
| Operating Voltage | 2.7V to 5.5V - compatible with single Li-ion, 3.3V logic, and dual-supply legacy systems |
| Temp Range | –40°C to 125°C - qualified for under-hood automotive and industrial control applications |
Pinout & Package
16-lead plastic DFN (5mm × 3mm) package with exposed metal pad soldered to V– for thermal and electrical performance. Pin 1 marked by notch; underside metal connected to V–.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | OUTA, –INA, +INA, V+ | Amplifier A output, inverting input, non-inverting input, positive supply |
| 5, 6, 7, 8 | +INB, –INB, OUTB, NC | Amplifier B non-inverting input, inverting input, output, no-connect |
| 9, 10, 11, 12 | OUTD, –IND, +IND, V– | Amplifier D output, inverting input, non-inverting input, negative supply |
| 13, 14, 15, 16 | +INC, –INC, OUTC, NC | Amplifier C non-inverting input, inverting input, output, no-connect |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full dynamic range utilization with 0V–3.3V or 0V–5V supplies - eliminates need for external level shifters |
| Ultra-low IB | 0.2pA typical at 25°C - maintains gain accuracy with 10GΩ feedback resistors in photodiode transimpedance stages |
| Shutdown control | Dedicated SHDN pins per amplifier (not present on this DHC variant) - note: LTC6079IDHC has no shutdown pins; only LTC6078DD includes them |
| Thermal hysteresis | Typical 1µV VOS shift after three –45°C to 90°C cycles - ensures long-term calibration stability in cyclic environments |
| High CMRR | 95dB minimum across full temperature range - rejects ground bounce and supply coupling in multi-channel PCB layouts |
Applications
| Photodiode Amplifier | Thermocouple Signal Conditioner |
|---|---|
Use Scenario: Low-light optical sensing using IR photodiode (e.g., TEMD1000 at 870nm) in portable gas analyzers. IC Role / Device Role / Timing Role: Transimpedance amplifier converting photocurrent to voltage with 600mV/µW gain and sub-pA input error. Use Value: 0.2pA typical input bias prevents signal loss in high-impedance node; 16nV/√Hz noise enables detection of <10nW optical signals. | Use Scenario: Cold-junction compensation and linearization of K-type thermocouples (–200°C to +1350°C) in industrial ovens. IC Role / Device Role / Timing Role: Precision buffer and gain stage for thermocouple voltage (40.6µV/°C) referenced to LT1025 cold-junction IC. Use Value: 25µV max VOS contributes <0.6°C error at 1000°C; rail-to-rail output drives ADC input directly without clipping. |
| pH Probe Amplifier | Microvolt Threshold Detector |
Use Scenario: High-impedance pH measurement (≥1TΩ probe) in water quality monitors using Sensorex S200C electrode. IC Role / Device Role / Timing Role: Unity-gain buffer isolating probe from downstream circuitry while rejecting common-mode noise. Use Value: Input bias ≤50pA avoids polarization error; 95dB CMRR suppresses 50/60Hz EMI from AC-powered lab equipment. | Use Scenario: Detection of microvolt-level fault signatures in motor winding insulation monitoring systems. IC Role / Device Role / Timing Role: Precision comparator front-end amplifying differential voltage across shunt resistor before window comparator stage. Use Value: 0.7µV/°C drift limits thermal error to <1µV over 10°C ambient change - critical for sub-5µV trip thresholds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2052IDHC#PBF | Zero-drift architecture; 3µV VOS, 30nV/°C drift, 170µA IS - higher precision but 3× higher power | Better for DC-critical applications like strain gauge bridges; less suitable for always-on battery sensors | Select when VOS drift dominates error budget; avoid if µA-level supply current is mandatory |
| LT6012IGN#PBF | 60µV VOS, 300pA IB, 135µA IS - wider bandwidth (1.9MHz GBW) but higher noise (27nV/√Hz) | Preferred for faster settling in data acquisition; trade-off between speed and DC precision | Choose for multi-channel simultaneous sampling where 10µs settling outweighs µV offset requirements |
Compared with LTC6079IDHC#PBF, LTC2052IDHC#PBF delivers superior DC accuracy at the cost of triple supply current, while LT6012IGN#PBF trades offset and noise for bandwidth - making LTC6079IDHC#PBF optimal for static or low-frequency (<10kHz) ultra-low-power precision sensing.
Availability
LTC6079IDHC#PBF is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor nodes, and medical diagnostic devices requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC6079IDHC#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 acquired Linear Technology in 2017, inheriting its legacy of high-performance analog ICs focused on precision, power efficiency, and reliability.
The LTC6078/LTC6079 family was designed specifically for micropower precision signal conditioning in battery-operated and thermally constrained systems - emphasizing ultra-low input bias, rail-to-rail operation, and guaranteed performance from –40°C to 125°C.
FAQ
What is the maximum operating temperature range for the LTC6079IDHC#PBF?
The LTC6079IDHC#PBF is rated for continuous operation from –40°C to 125°C. This 'I' grade qualification means all electrical specifications - including offset voltage, drift, CMRR, and PSRR - are guaranteed across this full industrial temperature range, making it suitable for under-hood automotive and high-temperature industrial control applications where thermal stability is critical.
Does the LTC6079IDHC#PBF include shutdown functionality?
No, the LTC6079IDHC#PBF does not include shutdown pins. Shutdown capability is only available on the LTC6078DD (dual, 10-lead DFN) variant, which features dedicated SHDN_A and SHDN_B pins. The LTC6079IDHC#PBF is a 16-lead DFN package with no shutdown terminals - all four amplifiers operate continuously when powered.
What is the input bias current specification for LTC6079IDHC#PBF at 125°C?
At 125°C, the LTC6079IDHC#PBF guarantees a maximum input bias current of 350pA (per amplifier). At 25°C, it is specified at ≤1pA typical and ≤10pA maximum. This controlled IB increase with temperature ensures predictable performance in high-ambient environments without compromising high-impedance node integrity.
Can LTC6079IDHC#PBF drive capacitive loads, and what is the recommended limit?
Yes, the LTC6079IDHC#PBF can drive capacitive loads up to 200pF in unity-gain configuration. For higher gains, the allowable capacitance increases. When driving >100pF, adding a small series resistor (e.g., 10–50Ω) between the output and load improves phase margin and reduces overshoot - a technique validated in the datasheet's transient response curves.
Is the exposed pad on the LTC6079IDHC#PBF package electrically connected, and how should it be handled?
Yes, the exposed metal pad on the bottom of the LTC6079IDHC#PBF DFN package is internally connected to V– (negative supply). It must be soldered to a PCB copper pour tied to the V– net for optimal thermal dissipation and electrical performance. Leaving it floating or connecting it to ground (if V– ≠ GND) will degrade PSRR and may cause instability.
LTC6079IDHC#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-WFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.05V/µs
- Gain Bandwidth Product:
- 750 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.2 pA
- Voltage - Input Offset:
- 10 µV
- Current - Supply:
- 55µA (x4 Channels)
- Current - Output / Channel:
- 25 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-DFN (5x3)
LTC6079IDHC#PBF FAQ
1.How can I place an order for LTC6079IDHC#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6079IDHC#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 LTC6079IDHC#PBF reliable?
The price and inventory of LTC6079IDHC#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6079IDHC#PBF is usually 5 days.
3.What payment methods are accepted for LTC6079IDHC#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6079IDHC#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6079IDHC#PBF?
LTC6079IDHC#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6079IDHC#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 LTC6079IDHC#PBF?
For technical support, including LTC6079IDHC#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6079IDHC#PBF requirements.
6.How does Aetrix verify that LTC6079IDHC#PBF is sourced from the original manufacturer or authorized distributors?
All LTC6079IDHC#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 LTC6079IDHC#PBF meets industry standards.
7.What is the process for return or replacement of LTC6079IDHC#PBF?
All LTC6079IDHC#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6079IDHC#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 LTC6079IDHC#PBF part is unused and in its original packaging.
Return procedure for LTC6079IDHC#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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