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Analog Devices Inc. LTC2372CUH-16#PBF
- Part No.:
- LTC2372CUH-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
LTC2372CUH-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,012
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Product details
Overview
LTC2372CUH-16#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, 500ksps, 8-channel successive approximation register (SAR) analog-to-digital converter with ±1LSB INL (max), 96dB SNR (fully differential), and integrated 2.048V temperature-compensated reference. It operates from a single 5V supply, supports fully differential (±4.096V), pseudo-differential unipolar (0–4.096V), and bipolar (±2.048V) input ranges, and is used in high-precision industrial data acquisition systems requiring low crosstalk and no missing codes.
For engineers reviewing the LTC2372CUH-16#PBF datasheet, LTC2372CUH-16#PBF pinout, LTC2372CUH-16#PBF application, or LTC2372CUH-16#PBF equivalent, this page delivers verified specifications, validated pin functions, real-world use scenarios in PLCs and ATE, and two confirmed alternative ADCs with documented functional and application-level differences - all aligned to the C-grade (0°C to 70°C) QFN-32 variant.
Technical Context
The LTC2372CUH-16#PBF implements a true SAR architecture with no pipeline delay or cycle latency, enabling deterministic conversion timing (1.5µs max). Its highly configurable 8-channel multiplexer supports per-channel input range selection and includes programmable sequencer logic (16-deep) and digital gain compression for dynamic range optimization.
It integrates a low-drift (20ppm/°C max) internal reference buffer driving a stable 4.096V output, accepts external reference inputs (REFIN), and features SPI-compatible serial I/O compatible with 1.8V–5V logic levels. Power management includes nap mode (27mW at 500ksps) and sleep mode (300µW), with guaranteed operation up to 125°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes - ensures full dynamic range utilization without code gaps in precision measurement. |
| Sampling Rate | 500ksps maximum - supports high-speed transient capture in automated test equipment and process control loops. |
| INL | ±1LSB (max) across all input ranges - guarantees monotonicity and accurate end-point linearity for calibration-critical systems. |
| SNR | 96dB (fully differential, fIN = 1kHz) - enables >15.6 effective bits of resolution in noise-sensitive sensor interfaces. |
| Input Ranges | Fully differential (±4.096V), pseudo-differential unipolar (0–4.096V), pseudo-differential bipolar (±2.048V) - simplifies front-end design across diverse signal types. |
| Reference | Onboard 2.048V temp-compensated reference + buffered 4.096V output - eliminates need for external reference IC in space-constrained designs. |
| Power | 27mW at 500ksps (nap mode); 300µW in sleep - enables low-power operation in battery-backed or thermally constrained instrumentation. |
Pinout & Package
32-lead 5mm × 5mm plastic QFN package (UH) with exposed pad soldered to PCB ground. Pin 33 is the exposed thermal pad, electrically connected to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH7 | Analog input channels | Eight single-ended or differential-capable inputs; selected via internal multiplexer under sequencer or manual control. |
| COM | Common-mode reference | Return node for pseudo-differential configurations; sets common-mode voltage for channel pairs. |
| ADCIN+, ADCIN– | Differential analog input | Primary high-precision input pair for fully differential mode; accepts ±4.096V differential swing. |
| MUXOUT+, MUXOUT– | Multiplexer output | Buffered outputs of selected channel pair; used for external monitoring or signal conditioning. |
| CNV | Conversion start trigger | Edge-triggered input initiating sample-and-hold and conversion sequence; asynchronous to SCK. |
| BUSY | Conversion status indicator | Active-high open-drain signal indicating ongoing conversion; used for timing synchronization without polling. |
| SDO, SDI, SCK, RDL | SPI interface signals | Full-duplex serial interface supporting 1.8V–5V I/O; RDL enables tri-state control of SDO for daisy-chaining. |
| REFIN, REFBUF | Reference inputs/outputs | REFIN accepts external 1.25–2.4V reference; REFBUF provides 4.096V buffered output (disable when overdriven). |
| VDD, OVDD, GND | Power supplies | VDD = 4.75–5.25V analog supply; OVDD = 1.71–5.25V I/O supply; multiple GND pins minimize ground bounce. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | Zero-cycle latency enables real-time closed-loop control with immediate access to converted data. |
| Programmable 16-deep sequencer | Automates multi-channel acquisition order and input range selection without host CPU intervention. |
| Selectable digital gain compression | Adjusts effective full-scale range digitally to improve SNR for small-signal measurements. |
| Channel-to-channel crosstalk < –107dB | Ensures isolation between active and inactive channels during high-speed multiplexed sampling. |
| Aperture jitter = 4psRMS | Minimizes sampling uncertainty, preserving SFDR > 110dB even at Nyquist frequencies. |
| Guaranteed operation to 125°C | Validated performance across extended industrial temperature range without derating. |
Applications
| Programmable Logic Controllers | Industrial Process Control |
|---|---|
|
Use Scenario: High-density analog input modules acquiring temperature, pressure, and flow sensor signals in factory automation cabinets. IC Role / Device Role / Timing Role: Primary 16-bit ADC handling eight sensor channels with simultaneous range configuration and on-the-fly gain adjustment. Use Value: ±1LSB INL and 96dB SNR ensure traceable metrology-grade accuracy across 0–70°C ambient, reducing field calibration frequency. |
Use Scenario: Distributed I/O nodes in oil & gas refineries measuring valve position feedback and tank level transmitters. IC Role / Device Role / Timing Role: Low-power, high-reliability ADC operating in nap mode between 100ms process scans, waking on CNV pulse. Use Value: Integrated 2.048V reference and 300µW sleep current eliminate external reference drift and extend backup battery life. |
| High-Speed Data Acquisition | Automated Test Equipment |
|
Use Scenario: Portable oscilloscope front-ends capturing transient waveforms from vibration sensors and acoustic emitters. IC Role / Device Role / Timing Role: Precision SAR ADC delivering 500ksps throughput with deterministic 1.5µs conversion time and no latency. Use Value: Aperture jitter of 4psRMS and –114dB THD preserve signal fidelity for FFT-based spectral analysis up to 200kHz. |
Use Scenario: Semiconductor parametric testers performing DC and AC characterization of ICs under bias conditions. IC Role / Device Role / Timing Role: Channel-multiplexed ADC acquiring voltage/current compliance readings across multiple DUT pins in sequence. Use Value: Programmable sequencer and <–107dB crosstalk prevent measurement contamination between adjacent test channels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8860IRGET | 16-bit, 1MSPS, single-channel, no internal reference, requires external 4.096V ref; SPI interface only. | Best suited for single-input, ultra-high-speed applications where multiplexing and reference integration are unnecessary. | Select when higher speed is critical and system already provides precision reference; not drop-in due to missing 8-channel mux and internal ref. |
| AD7960BCPZ-RL7 | 18-bit, 5MSPS, pseudo-differential only, no internal reference, LVDS/CMOS dual interface; requires external 5V ref. | Targeted at high-resolution, high-throughput applications like medical imaging where 18-bit depth outweighs channel count. | Choose for enhanced resolution and speed; requires redesign of reference, power, and digital interface - not pin- or function-compatible. |
Compared with LTC2372CUH-16#PBF, ADS8860IRGET offers higher speed but sacrifices channel count and reference integration, while AD7960BCPZ-RL7 delivers 2 extra bits and 10× throughput at the cost of increased complexity, power, and external component requirements - making LTC2372CUH-16#PBF optimal for compact, self-contained 8-channel industrial DAQ.
Availability
LTC2372CUH-16#PBF is available at Aetrix Electronics and suitable for programmable logic controllers, industrial process control systems, and high-speed data acquisition requiring stable component supply, long-term lifecycle support, and guaranteed 0°C to 70°C commercial-grade performance.
Supply support for LTC2372CUH-16#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 LTC2372 family was designed specifically for high-accuracy, multi-channel industrial data acquisition - emphasizing low noise, low crosstalk, integrated references, and robust SPI interfacing in compact QFN packages.
FAQ
What is the operating temperature range of the LTC2372CUH-16#PBF?
The LTC2372CUH-16#PBF is rated for 0°C to 70°C ambient operation (commercial grade). This is explicitly defined in the Order Information table and confirmed in Absolute Maximum Ratings. The 'C' suffix in the part number denotes this temperature grade, distinct from the 'I' (–40°C to 85°C) and 'H' (–40°C to 125°C) variants. All electrical specifications in the datasheet labeled with 'l' apply across this full range.
Does the LTC2372CUH-16#PBF require an external reference?
No, the LTC2372CUH-16#PBF does not require an external reference. It integrates a 2.048V temperature-compensated internal reference and a reference buffer that outputs 4.096V. The REFIN pin is optional and can accept an external 1.25V–2.4V reference if higher precision or different voltage is needed; otherwise, the internal reference is enabled by default and sufficient for most applications.
How many analog input channels does the LTC2372CUH-16#PBF support?
The LTC2372CUH-16#PBF supports eight analog input channels (CH0 through CH7), implemented via a low-crosstalk multiplexer. These channels can be configured in fully differential, pseudo-differential unipolar, or pseudo-differential bipolar modes. The device also provides dedicated ADCIN+/ADCIN– and MUXOUT+/MUXOUT– pins for direct differential input and multiplexer output monitoring.
What is the maximum sampling rate of the LTC2372CUH-16#PBF?
The maximum sampling rate of the LTC2372CUH-16#PBF is 500ksps (500,000 samples per second), as specified in the ADC Timing Characteristics table under fSMPL. This rate is achievable across all supported input ranges and temperature conditions within its 0°C to 70°C operating range, with conversion time limited to 1.5µs maximum.
Is the LTC2372CUH-16#PBF pin-compatible with other variants in the LTC2372 family?
Yes, the LTC2372CUH-16#PBF is pin-compatible with the LTC2372IUH-16#PBF and LTC2372HUH-16#PBF - all share the identical 32-lead 5mm × 5mm QFN (UH) package and identical pinout. The only differences are operating temperature grade and associated screening; electrical functionality, pin assignments, and footprint are identical across C, I, and H versions.
LTC2372CUH-16#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 32-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 500k
- Number of Inputs:
- 8
- Input Type:
- Differential, Pseudo-Differential
- Data Interface:
- SPI
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 32-QFN (5x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2372CUH-16#PBF FAQ
1.How can I place an order for LTC2372CUH-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2372CUH-16#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 LTC2372CUH-16#PBF reliable?
The price and inventory of LTC2372CUH-16#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2372CUH-16#PBF is usually 5 days.
3.What payment methods are accepted for LTC2372CUH-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2372CUH-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2372CUH-16#PBF?
LTC2372CUH-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2372CUH-16#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 LTC2372CUH-16#PBF?
For technical support, including LTC2372CUH-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2372CUH-16#PBF requirements.
6.How does Aetrix verify that LTC2372CUH-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2372CUH-16#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 LTC2372CUH-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2372CUH-16#PBF?
All LTC2372CUH-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2372CUH-16#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 LTC2372CUH-16#PBF part is unused and in its original packaging.
Return procedure for LTC2372CUH-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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