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Analog Devices Inc. LTC2372IUH-16#PBF
- Part No.:
- LTC2372IUH-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
LTC2372IUH-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,671
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Product details
Overview
LTC2372IUH-16#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, 500ksps, 8-channel successive approximation register (SAR) analog-to-digital converter with integrated 2.048V reference and reference buffer. It supports fully differential (±4.096V), pseudo-differential unipolar (0V to 4.096V), and pseudo-differential bipolar (±2.048V) input ranges, achieves ±1LSB INL (max), 96dB SNR (fully differential), and operates over –40°C to +85°C in a 32-lead 5mm × 5mm QFN package. It is used in high-precision industrial data acquisition systems requiring low crosstalk and no missing codes.
For engineers reviewing the LTC2372IUH-16#PBF datasheet, LTC2372IUH-16#PBF pinout, LTC2372IUH-16#PBF application, or LTC2372IUH-16#PBF equivalent, this page delivers verified specifications, validated pin functions, real-world use cases in process control and ATE, and two confirmed alternative SAR ADCs with documented functional and thermal differences.
Technical Context
The LTC2372IUH-16#PBF implements an 8-channel analog multiplexer with programmable input range selection per channel, enabling flexible signal routing without external switching. Its internal oscillator eliminates external clock dependency for conversion timing, and its SPI-compatible serial interface supports 1.8V–5V I/O logic levels with a 16-deep sequencer for automated channel scanning.
It features automatic nap mode between conversions and a dedicated sleep mode reducing current to 300μW, making it suitable for power-sensitive embedded instrumentation. The onboard 2.048V temperature-compensated reference (20ppm/°C max) drives a low-drift reference buffer capable of 1mA output, supporting both internal and external reference configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with guaranteed no missing codes - ensures full dynamic range utilization in precision measurement. |
| Sampling Rate | 500ksps maximum - enables real-time capture of signals up to 22MHz bandwidth (–3dB input linear bandwidth). |
| INL | ±1LSB maximum across all input ranges - maintains end-point accuracy critical for calibration-critical systems. |
| SNR | 96dB typical (fully differential), 93.5dB typical (pseudo-differential) at 1kHz - supports >15.6 effective bits in clean signal environments. |
| Power Dissipation | 27mW typical at 500ksps, 300μW in sleep mode - allows thermal-constrained PCB layouts and battery-backed operation. |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments including factory automation and outdoor instrumentation. |
| Reference | Integrated 2.048V ±0.25% (2.043V–2.053V), 20ppm/°C max - eliminates need for external precision reference in most applications. |
Pinout & Package
Package: 32-lead 5mm × 5mm plastic QFN (UH package); exposed pad (Pin 33) must be soldered to PCB ground plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH7 | Analog input channels | Eight single-ended or differential-capable inputs; configurable via sequencer for multiplexed sampling. |
| COM | Common-mode reference | Return path for pseudo-differential inputs; sets common-mode voltage for bipolar/unipolar modes. |
| ADCIN+, ADCIN– | Differential analog input pair | Direct connection point for fully differential signals; bypasses internal MUX for highest fidelity. |
| MUXOUT+, MUXOUT– | Multiplexer output pair | Provides buffered post-MUX differential output for external signal conditioning or verification. |
| REFIN | Reference input | Accepts external 1.25V–2.4V reference; disables internal reference buffer when driven. |
| REFBUF | Reference buffer output | Provides 4.096V (typ) buffered reference; supports overdrive to 5V for extended full-scale range. |
| CNV | Conversion start trigger | Edge-triggered input; initiates sample-and-hold and conversion sequence with <1.5µs conversion time. |
| BUSY | Conversion status indicator | Active-high open-drain output signaling ongoing conversion; synchronizes host read timing. |
| SDO, SDI, SCK, RDL | SPI-compatible serial interface | Supports 100MHz SCK (min 10ns period); RDL enables 3-wire shared-bus operation with tri-state control. |
| VDD, OVDD, GND | Power supplies | VDD = 4.75–5.25V analog supply; OVDD = 1.71–5.25V digital I/O supply; independent grounding improves noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable 16-deep sequencer | Enables autonomous multi-channel scan without host intervention - reduces CPU overhead in PLC and DAQ firmware. |
| Selectable digital gain compression | Prevents overflow during transient overvoltage events by scaling digital output - improves system robustness without analog clamping. |
| No pipeline delay / zero cycle latency | Delivers first valid conversion result within one CNV cycle - essential for closed-loop control with tight timing budgets. |
| Channel-to-channel crosstalk < –107dB | Minimizes interference between active and inactive channels - preserves signal integrity in high-density sensor arrays. |
| Guaranteed operation to 125°C (H-grade) | Validated thermal margin beyond I-grade spec - supports derating analysis for long-life industrial deployments. |
Applications
| Industrial Process Control | High-Speed Data Acquisition |
|---|---|
|
Use Scenario: Monitoring temperature, pressure, and flow sensors across distributed I/O modules in chemical plant control systems. IC Role / Device Role / Timing Role: 8-channel SAR ADC digitizing multiple 4–20mA loop outputs simultaneously with synchronized sampling and low inter-channel crosstalk. Use Value: ±1LSB INL and 96dB SNR ensure accurate calibration traceability; nap mode reduces average power to <10mW per channel in idle states. |
Use Scenario: Digitizing vibration signatures from accelerometers in predictive maintenance edge nodes. IC Role / Device Role / Timing Role: High-fidelity front-end capturing 500ksps bursts with 22MHz analog bandwidth and aperture jitter of 4ps RMS. Use Value: Fully differential input range (±4.096V) accommodates wide-swing transducer outputs; SPI interface enables direct FPGA interfacing at 100MHz SCK. |
| Automated Test Equipment (ATE) | Portable Instrumentation |
|
Use Scenario: Multi-site parametric testing of analog ICs requiring simultaneous voltage/current measurements across DUT pins. IC Role / Device Role / Timing Role: Precision ADC with programmable sequencer scanning 8 DUT nodes while maintaining channel isolation and timing coherence. Use Value: –107dB crosstalk and 16-bit no-missing-codes guarantee measurement repeatability; REFBUF output powers external DACs for stimulus generation. |
Use Scenario: Battery-powered handheld multimeter with dual-range voltage/current measurement and data logging. IC Role / Device Role / Timing Role: Low-power 16-bit ADC operating in nap mode between manual triggers, waking on CNV pulse for single-shot capture. Use Value: 300μW sleep current extends battery life; 5V single-supply simplifies power architecture; compact QFN fits space-constrained enclosures. |
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 |
|---|---|---|---|
| AD7606C-16 | 8-channel, 16-bit, 1MSPS; integrated PGA (±0.5V to ±10V); requires external reference; 4.5V–5.5V VDD only. | Better suited for wide-input-range industrial sensors needing programmable gain; lacks internal reference buffer and sequencer flexibility. | Choose AD7606C-16 when input signal amplitude varies widely and PGA support is required; avoid if reference simplicity or low-power nap mode is critical. |
| ADS8688 | 8-channel, 16-bit, 500ksps; integrated ±10V input range; SPI with daisy-chain capability; 2.7V–5.5V VDD; no internal reference. | Designed for direct connection to ±10V industrial sensors; includes built-in overvoltage protection; higher supply voltage flexibility but no internal reference. | Choose ADS8688 for ±10V legacy sensor interfaces and daisy-chained multi-ADC systems; avoid if internal 2.048V reference and low-quiescent power are mandatory. |
Compared with AD7606C-16 and ADS8688, the LTC2372IUH-16#PBF uniquely integrates a temperature-compensated 2.048V reference with buffer, supports three distinct input ranges without external components, and delivers lowest sleep-mode power (300μW) - making it optimal for self-contained, calibration-critical, and thermally constrained designs.
Availability
LTC2372IUH-16#PBF is available at Aetrix Electronics and suitable for industrial process control, high-speed data acquisition, and automated test equipment requiring stable component supply, long-term lifecycle support, and guaranteed –40°C to +85°C operation.
Supply support for LTC2372IUH-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 technologies.
The LTC2372IUH-16#PBF belongs to Linear's precision SAR ADC product line, engineered for demanding industrial and instrumentation applications where resolution, linearity, low power, and integrated reference stability are non-negotiable.
FAQ
What is the maximum sampling rate of the LTC2372IUH-16#PBF?
The LTC2372IUH-16#PBF supports a maximum sampling rate of 500ksps, with a guaranteed conversion time of ≤1.5µs and acquisition time of 1.46µs. This enables accurate digitization of signals with up to 22MHz analog input bandwidth, as specified in the datasheet's –3dB linear bandwidth characteristic.
Does the LTC2372IUH-16#PBF include an internal voltage reference?
Yes, the LTC2372IUH-16#PBF integrates a precision 2.048V temperature-compensated reference with a maximum drift of 20ppm/°C and output voltage tolerance of ±0.25% (2.043V to 2.053V). It also includes a reference buffer capable of delivering 1mA, configurable to output 4.096V or overdriven to 5V.
What input configurations does the LTC2372IUH-16#PBF support?
The LTC2372IUH-16#PBF supports three user-selectable analog input configurations: fully differential (±4.096V), pseudo-differential unipolar (0V to 4.096V), and pseudo-differential bipolar (±2.048V). Each channel's range is independently programmable via its sequencer configuration word.
How does the power consumption of the LTC2372IUH-16#PBF scale with sampling rate?
The LTC2372IUH-16#PBF automatically enters nap mode between conversions, reducing current draw proportionally to sampling rate. At 500ksps, typical supply current is 7mA (VDD) + 1.5mA (OVDD); at lower rates, nap-mode current drops to ~1.25mA total, and sleep mode draws only 300μW - enabling adaptive power management in battery or thermally constrained systems.
Is the LTC2372IUH-16#PBF pin-compatible with other members of the LTC2372 family?
Yes, the LTC2372IUH-16#PBF shares identical pinout and footprint with the LTC2372CUH-16#PBF (0°C to 70°C) and LTC2372HUH-16#PBF (–40°C to 125°C). All variants use the same 32-lead 5mm × 5mm QFN (UH) package and are functionally identical except for temperature grade and associated screening.
LTC2372IUH-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:
- -40°C ~ 85°C
- Supplier Device Package:
- 32-QFN (5x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2372IUH-16#PBF FAQ
1.How can I place an order for LTC2372IUH-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2372IUH-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 LTC2372IUH-16#PBF reliable?
The price and inventory of LTC2372IUH-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 LTC2372IUH-16#PBF is usually 5 days.
3.What payment methods are accepted for LTC2372IUH-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2372IUH-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2372IUH-16#PBF?
LTC2372IUH-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2372IUH-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 LTC2372IUH-16#PBF?
For technical support, including LTC2372IUH-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2372IUH-16#PBF requirements.
6.How does Aetrix verify that LTC2372IUH-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2372IUH-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 LTC2372IUH-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2372IUH-16#PBF?
All LTC2372IUH-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2372IUH-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 LTC2372IUH-16#PBF part is unused and in its original packaging.
Return procedure for LTC2372IUH-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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