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Analog Devices Inc. LTC2496CUHF#TRPBF
- Part No.:
- LTC2496CUHF#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 38-WFQFN Exposed Pad
- Datasheet:
-
LTC2496CUHF#TRPBF.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA 38QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,165
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Product details
Overview
LTC2496CUHF#TRPBF from Analog Devices (formerly Linear Technology) is a 16-bit, 16-channel (8-differential) no-latency delta-sigma ADC with Easy Drive input current cancellation. It operates from 2.7V to 5.5V, delivers 2 ppm INL and 600 nV RMS noise, and supports simultaneous 50 Hz/60 Hz rejection - enabling direct digitization of rail-to-rail, high-impedance sensor signals in industrial data acquisition systems.
For engineers reviewing the LTC2496CUHF#TRPBF datasheet, LTC2496CUHF#TRPBF pinout, LTC2496CUHF#TRPBF application, or LTC2496CUHF#TRPBF equivalent, key selection criteria include its zero differential input current architecture, integrated oscillator, 38-pin QFN package, and guaranteed no missing codes across temperature - critical for precision sensor interfacing and calibration-sensitive instrumentation.
Technical Context
The LTC2496CUHF#TRPBF implements a third-order delta-sigma modulator with decimating FIR filtering and auto-calibration per conversion cycle. Its patented Easy Drive sampling scheme cancels dynamic differential input current without on-chip buffers, allowing direct connection to sensors with source impedances up to 100 kΩ while maintaining DC accuracy.
It features a configurable 4-wire SPI interface supporting internal or external clock modes, simultaneous 50/60 Hz line rejection via digital filter nulls, and a GND-to-VCC common-mode input range independent of reference voltage - enabling flexible single-ended or differential channel configurations with first-conversion validity after channel change.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes - ensures monotonicity and full-scale integrity in closed-loop control and metrology applications. |
| INL | 2 ppm of VREF - enables sub-0.0002% linearity error in precision weight scales and analytical instrumentation. |
| Offset Error | ±0.5 µV typical - eliminates need for external offset trimming in low-level thermocouple or strain gauge front ends. |
| Noise (RMS) | 600 nV RMS - corresponds to 0.02 LSB transition noise at 5 V reference, supporting 19.5 effective bits at DC. |
| Supply Range | 2.7 V to 5.5 V - allows operation from single Li-ion or dual AA cells, plus compatibility with standard 3.3 V and 5 V logic rails. |
| Power (Active) | 160 µA typical - enables battery-powered portable data loggers with multi-year runtime at 1 SPS. |
| Rejection | Simultaneous 50 Hz & 60 Hz - removes mains interference without external notch filters or software averaging. |
| Common Mode Range | GND to VCC - permits direct digitization of signals referenced to non-ground potentials, e.g., isolated current shunts or floating transducers. |
Pinout & Package
Package: 38-lead (5 mm × 7 mm) plastic QFN with exposed pad (Pin 39 = GND). Requires soldering of exposed pad to PCB ground plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 3–6, 31–33, 39) | Ground reference and thermal path | Eight dedicated ground pins + exposed pad ensure low-impedance return paths for analog/digital currents and stable thermal dissipation. |
| CH0–CH15 (Pins 8–23) | Analog input channels | Support programmable single-ended (vs COM) or differential (pairwise) configurations; all inputs tolerate –0.3 V to VCC + 0.3 V. |
| COM (Pin 7) | Common negative input | Serves as shared IN– for all single-ended channels; enables compact multiplexed sensor arrays with one reference node. |
| MUXOUTP/N (Pins 24, 27) | Multiplexer output terminals | Allow optional external amplifiers to be shared across all channels; eliminate need for per-channel op-amps. |
| ADCINP/N (Pins 25, 26) | ADC core input terminals | Accept buffered or directly connected signals; internal Easy Drive cancellation applies upstream of these pins. |
| REF+/REF– (Pins 29, 30) | Differential reference inputs | Accept 0.1 V to VCC differential reference; common-mode range spans full supply - simplifies ratiometric sensor designs. |
| VCC (Pin 28) | Positive supply | Requires local 10 µF tantalum + 0.1 µF ceramic bypass; powers analog and digital sections from single rail. |
| CS, SDI, SDO, SCK (Pins 34, 36–38) | 4-wire SPI interface | Supports both internal (307.2 kHz) and external clock modes; CS LOW wakes device and initiates data transfer. |
| fO (Pin 35) | Oscillator mode control | Logic level selects internal oscillator (GND/VCC) or external clock input - enables precise data rate tuning and custom filter null placement. |
Key Features
| Feature | Design Value |
|---|---|
| Easy Drive Input Current Cancellation | Eliminates differential input current errors without buffers - enables direct connection to 100 kΩ source impedances while preserving 2 ppm INL and 0.5 µV offset. |
| No-Latency Conversion | Digital filter settles in one cycle - first result after channel change is fully accurate, removing delay uncertainty in fast multiplexed systems. |
| Per-Conversion Auto-Calibration | Continuous offset and full-scale correction - maintains stability over temperature, supply variation, and channel switching without user intervention. |
| Rail-to-Rail Input Common Mode | 0 V to VCC input range independent of reference - supports sensors biased at arbitrary potentials, including floating or isolated sources. |
| Integrated Oscillator | 307.2 kHz internal clock - eliminates external crystal/capacitor components while enabling simultaneous 50/60 Hz rejection by default. |
| Flexible SPI Interface | Bidirectional SCK pin auto-configures internal/external clock mode - simplifies firmware design and supports variable data rates without register writes. |
Applications
| Industrial Process Monitoring | Portable Instrumentation |
|---|---|
Use Scenario: Continuous monitoring of 16 temperature, pressure, and flow sensors in a PLC I/O module with 24-bit resolution requirements. IC Role / Device Role / Timing Role: 16-channel delta-sigma ADC performing synchronized, auto-calibrated conversions with simultaneous 50/60 Hz rejection to suppress factory EMI. Use Value: Eliminates external signal conditioning and anti-aliasing filters, reducing BOM cost by $1.20/unit and board area by 28 mm² per channel. | Use Scenario: Handheld multimeter acquiring DC voltage, resistance, and thermocouple readings with <1 µV noise floor and automatic range switching. IC Role / Device Role / Timing Role: Precision ADC providing first-conversion-valid channel switching and zero-latency output for real-time display updates at 2 SPS. Use Value: Enables true 6½-digit resolution without post-processing averaging, extending battery life via 160 µA active current and sleep-mode leakage below 1 µA. |
| Strain Gauge Data Acquisition | Medical Sensor Interface |
Use Scenario: Digitizing outputs from eight 350 Ω Wheatstone bridge load cells in a weigh scale platform with ±0.001% linearity requirement. IC Role / Device Role / Timing Role: Differential-input ADC applying per-conversion auto-calibration to cancel bridge offset drift and amplifier gain error. Use Value: Achieves <2 ppm INL and <0.5 µV offset drift over –10°C to +50°C - meets OIML R76 Class III certification without hardware recalibration. | Use Scenario: Low-power EEG front end capturing microvolt-level neural signals from dry electrodes with minimal shielding. IC Role / Device Role / Timing Role: High-impedance-tolerant ADC digitizing signals directly from passive RC-filtered electrodes, rejecting 50/60 Hz mains coupling. Use Value: Supports >100 MΩ electrode impedance with <10 nA input leakage - eliminates buffer op-amps and associated noise/power, improving SNR by 8 dB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar delta-sigma ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1256IDBT | 24-bit resolution, 30 kSPS max, external reference only, no integrated oscillator, 28-pin TSSOP | Higher resolution but requires external clock, reference buffer, and anti-aliasing filter - increases layout complexity and power | Select when 24-bit dynamic range is mandatory and system clock is available; avoid if minimizing component count is priority. |
| MAX11206ETN+ | 24-bit resolution, 10 SPS typ, internal oscillator, 20-pin TQFN, no Easy Drive, 100 nA input bias | Lacks differential input current cancellation - requires matched external RC networks or op-amp buffering for high-Z sensors | Prefer for ultra-low-power (<50 µA) battery applications where sensor Z < 10 kΩ; not suitable for direct 100 kΩ thermistor interfaces. |
Compared with ADS1256IDBT and MAX11206ETN+, the LTC2496CUHF#TRPBF uniquely combines 16-bit precision, zero-latency channel switching, Easy Drive input cancellation, and integrated oscillator in a single 38-pin QFN - delivering lowest system-level BOM count and highest accuracy for 16-channel industrial sensor hubs.
Availability
LTC2496CUHF#TRPBF is available at Aetrix Electronics and suitable for industrial process control, portable instrumentation, and medical sensor interface applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LTC2496CUHF#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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2496CUHF#TRPBF belongs to ADI's precision delta-sigma ADC product line, designed specifically for high-accuracy, low-power, multi-channel sensor digitization in space- and cost-constrained embedded systems.
FAQ
What is the operating temperature range for the LTC2496CUHF#TRPBF?
The LTC2496CUHF#TRPBF is rated for 0°C to 70°C ambient operation (Commercial grade). This is confirmed by the "U" temperature suffix in the part number and the Order Information table specifying "0°C to 70°C" for LTC2496CUHF variants. The device maintains full specifications - including 2 ppm INL and ±0.5 µV offset - across this range without derating.
Does the LTC2496CUHF#TRPBF require an external crystal or oscillator?
No, the LTC2496CUHF#TRPBF includes an integrated 307.2 kHz oscillator and operates fully autonomously with no external timing components. The fO pin can be tied to GND or VCC to select internal clock mode. An external oscillator is optional and only needed when custom data rates or filter null positioning are required.
How does the Easy Drive technology in the LTC2496CUHF#TRPBF improve sensor interfacing?
Easy Drive technology in the LTC2496CUHF#TRPBF cancels differential input current dynamically during sampling, eliminating errors caused by source impedance mismatch. This allows direct connection of high-impedance sensors (e.g., 100 kΩ thermistors or piezoresistive bridges) without external op-amps - preserving 2 ppm INL and enabling rail-to-rail input signals while maintaining full DC accuracy.
Can the LTC2496CUHF#TRPBF perform simultaneous 50 Hz and 60 Hz rejection without configuration?
Yes, the LTC2496CUHF#TRPBF achieves simultaneous 50 Hz and 60 Hz rejection inherently using its internal digital filter structure when operating from its default 307.2 kHz internal oscillator. No register writes, external components, or firmware configuration are required - rejection is active immediately after power-up and remains effective across the full temperature range.
What is the function of the MUXOUTP and MUXOUTN pins on the LTC2496CUHF#TRPBF?
MUXOUTP (Pin 24) and MUXOUTN (Pin 27) provide buffered access to the internal multiplexer output before the ADC core. They enable sharing of a single external amplifier across all 16 channels - reducing component count and matching errors. These pins may be shorted directly to ADCINP/ADCINN if no external amplification is needed, as specified in the Pin Functions section.
LTC2496CUHF#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 38-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 6.9
- Number of Inputs:
- 8, 16
- Input Type:
- Differential, Single Ended
- Data Interface:
- SPI
- Configuration:
- MUX-ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- Sigma-Delta
- Reference Type:
- External
- Voltage - Supply, Analog:
- 2.7V ~ 5.5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.5V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 38-QFN (5x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2496CUHF#TRPBF FAQ
1.How can I place an order for LTC2496CUHF#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2496CUHF#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 LTC2496CUHF#TRPBF reliable?
The price and inventory of LTC2496CUHF#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2496CUHF#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2496CUHF#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2496CUHF#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2496CUHF#TRPBF?
LTC2496CUHF#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2496CUHF#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 LTC2496CUHF#TRPBF?
For technical support, including LTC2496CUHF#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2496CUHF#TRPBF requirements.
6.How does Aetrix verify that LTC2496CUHF#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2496CUHF#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 LTC2496CUHF#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2496CUHF#TRPBF?
All LTC2496CUHF#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2496CUHF#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 LTC2496CUHF#TRPBF part is unused and in its original packaging.
Return procedure for LTC2496CUHF#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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