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Analog Devices Inc. LTC2374CUH-16#PBF
- Part No.:
- LTC2374CUH-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
LTC2374CUH-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:544
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Product details
Overview
LTC2374CUH-16#PBF from Analog Devices is a 16-bit, 1.6 Msps, 8-channel successive approximation register (SAR) analog-to-digital converter with ±1 LSB INL (max), 96 dB SNR (fully differential), and integrated 2.048 V temperature-compensated reference. It operates from a single 5 V supply, supports fully differential (±4.096 V), pseudo-differential unipolar (0 V to 4.096 V), and pseudo-differential bipolar (±2.048 V) input ranges, and delivers no missing codes across all modes-ideal for high-precision industrial data acquisition systems.
For engineers reviewing the LTC2374CUH-16#PBF datasheet, LTC2374CUH-16#PBF pinout, LTC2374CUH-16#PBF application, or LTC2374CUH-16#PBF equivalent, this page provides verified specifications including conversion timing (360–427 ns), SPI-compatible serial interface (1.8 V to 5 V I/O), programmable 16-deep sequencer, and low-power nap/sleep modes (55 mW / 300 µW) critical for embedded instrumentation and ATE design.
Technical Context
The LTC2374CUH-16#PBF implements a true SAR architecture with no pipeline delay or cycle latency, enabling deterministic real-time sampling. Its highly configurable 8-channel multiplexer features low crosstalk (< –110 dB) and supports three distinct analog input configurations via internal register programming-each validated for ±1 LSB INL and 93–96 dB SNR depending on mode.
Internal timing is governed by an onboard oscillator, eliminating external clock dependency for conversion control. The device integrates a low-drift (≤20 ppm/°C) 2.048 V reference with buffer, supports REFIN overdrive up to 2.4 V, and allows REFBUF overdrive to 5 V for extended full-scale range-enabling flexible system-level voltage scaling without external references.
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 | 1.6 Msps maximum-supports high-speed transient capture in automated test equipment and process control loops. |
| INL (Max) | ±1 LSB across all input ranges-enables accurate absolute voltage measurement without calibration per channel. |
| SNR (Typ) | 96 dB (fully differential), 93 dB (pseudo-differential)-delivers >90 dB effective number of bits (ENOB ≈ 15.6) at 1 kHz. |
| Power Dissipation | 55 mW at 1.6 Msps; 300 µW in sleep mode-scales linearly with sample rate for energy-efficient battery or thermal-constrained designs. |
| Reference | Onboard 2.048 V ±0.25% (25°C), 20 ppm/°C max drift-reduces BOM count and improves long-term stability vs. external references. |
| Digital Interface | SPI-compatible, 1.8 V to 5 V I/O-interoperates directly with FPGA, MCU, and DSP logic without level-shifting circuitry. |
Pinout & Package
The LTC2374CUH-16#PBF is housed in a 32-lead 5 mm × 5 mm plastic QFN package (UH) with exposed pad soldered to PCB ground. Pin 33 (exposed pad) is GND and must be thermally and electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH7 | Analog input channels | Eight single-ended inputs configurable as fully differential pairs or pseudo-differential combinations; support ±4.096 V, 0–4.096 V, or ±2.048 V ranges. |
| MUXOUT+, MUXOUT– | Multiplexer output terminals | Provide buffered analog outputs of selected channel pair; used for external signal monitoring or feedback paths. |
| ADCIN+, ADCIN– | Core ADC input terminals | Direct connection to SAR core; accept fully differential signals only-must be driven from MUXOUT± or external source. |
| REFIN, REFBUF | Reference input/buffer control | REFIN accepts 1.25–2.4 V external reference; REFBUF enables 2.5–5 V overdrive of internal buffer for extended full-scale range. |
| SDO, SDI, SCK, RDL, BUSY, CNV | SPI interface and control | Standard 4-wire SPI plus BUSY flag and CNV strobe; RDL enables tri-state SDO during multi-device bus sharing. |
| VDD, OVDD, GND | Power supplies | VDD = 4.75–5.25 V analog supply; OVDD = 1.71–5.25 V digital I/O supply-decoupling required per datasheet layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable 16-deep sequencer | Enables automatic round-robin or custom channel scan order without host CPU intervention-reducing firmware overhead in PLCs. |
| Selectably enabled digital gain compression | Prevents overflow in high-amplitude transients by compressing MSBs-preserves resolution in mixed-signal applications with wide dynamic range. |
| No pipeline delay, zero cycle latency | Delivers immediate, deterministic conversion results-critical for closed-loop control and time-critical event triggering. |
| Low crosstalk multiplexer (< –110 dB) | Ensures channel isolation even when adjacent channels carry large differential signals-essential for simultaneous multi-sensor acquisition. |
| Auto-nap between conversions | Reduces average power proportionally to sampling rate-enables 100 kSPS operation at ~3.5 mW while retaining full performance. |
Applications
| Industrial Process Control | High-Speed Data Acquisition |
|---|---|
Use Scenario: Monitoring temperature, pressure, and flow sensors in distributed control systems with tight loop timing. IC Role / Device Role / Timing Role: 8-channel SAR ADC digitizing sensor outputs at ≤1.6 Msps with deterministic latency and channel sequencing. Use Value: ±1 LSB INL ensures calibrated accuracy across all 8 channels without per-channel trimming; integrated reference eliminates external component drift. |
Use Scenario: Capturing fast transients in oscilloscope front-ends or power quality analyzers requiring >1 MSPS sustained throughput. IC Role / Device Role / Timing Role: High-fidelity analog sampling with 96 dB SNR and no pipeline delay-enabling real-time FFT and waveform reconstruction. Use Value: 360 ns conversion time and BUSY/CNV timing enable precise trigger synchronization; low aperture jitter (4 ps RMS) preserves signal integrity. |
| Automated Test Equipment (ATE) | Portable Instrumentation |
Use Scenario: Multi-point voltage/current measurement in semiconductor wafer probers and board-level functional testers. IC Role / Device Role / Timing Role: Precision ADC with programmable sequencer scanning DUT pins while maintaining channel-to-channel isolation. Use Value: <–110 dB crosstalk prevents signal bleed between adjacent test channels; SPI interface simplifies integration into FPGA-based controller architectures. |
Use Scenario: Battery-powered handheld multimeters and portable spectrum analyzers requiring high resolution and low power. IC Role / Device Role / Timing Role: Low-power 16-bit ADC operating in nap/sleep modes between measurements to extend battery life. Use Value: 300 µW sleep current and auto-nap reduce average power to sub-milliwatt levels-enabling >100-hour runtime on coin-cell batteries. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, multi-channel SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7606C-16 | 8-channel, 16-bit, 1 MSPS; integrated PGA (±10 V/±5 V/±2.5 V); no internal reference buffer; uses external 4.096 V ref. | Better suited for wide-input-range industrial sensors requiring programmable gain; lacks REFBUF overdrive capability. | Select AD7606C-16 when input signal amplitude varies widely and PGA gain control is needed; LTC2374CUH-16#PBF preferred for fixed-range, ultra-low-noise applications. |
| ADS8688IPWR | 8-channel, 16-bit, 1 MSPS; SAR with integrated 5 V reference; supports 5 V single supply only; no REFBUF overdrive; SPI with daisy-chain mode. | Optimized for TI ecosystem integration; lower SNR (92 dB typical) and higher power (70 mW) than LTC2374CUH-16#PBF. | Choose ADS8688IPWR for cost-sensitive, single-supply 5 V systems where moderate SNR suffices; LTC2374CUH-16#PBF offers superior noise performance and flexible I/O voltage. |
Compared with AD7606C-16 and ADS8688IPWR, the LTC2374CUH-16#PBF delivers the highest SNR (96 dB), lowest INL (±1 LSB), and most flexible reference architecture-including REFBUF overdrive to 5 V-making it optimal for metrology-grade applications where absolute accuracy and noise floor are critical.
Availability
LTC2374CUH-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 traceable sourcing.
Supply support for LTC2374CUH-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. is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2374-16 product line was designed for high-precision, multi-channel data acquisition in space-constrained, low-power industrial systems-emphasizing accuracy, configurability, and ease of integration without external support components.
FAQ
What is the maximum sampling rate of the LTC2374CUH-16#PBF?
The LTC2374CUH-16#PBF achieves a maximum sampling rate of 1.6 Msps across all input configurations. This is supported by a minimum conversion time of 360 ns and a minimum time between conversions (tCYC) of 625 ns, enabling sustained high-throughput operation without data loss or timing violation.
Does the LTC2374CUH-16#PBF require an external reference?
No-the LTC2374CUH-16#PBF integrates a 2.048 V temperature-compensated reference with ≤20 ppm/°C drift and a dedicated reference buffer (REFBUF). An external reference may be applied via REFIN (1.25–2.4 V), but it is not required for standard operation.
How does the programmable sequencer function in the LTC2374CUH-16#PBF?
The LTC2374CUH-16#PBF includes a 16-deep programmable sequencer that stores channel selection, input range, and gain settings. Once configured, it automatically cycles through entries without host intervention-reducing SPI traffic and enabling deterministic multi-channel acquisition in PLC and ATE applications.
What are the supported analog input configurations for the LTC2374CUH-16#PBF?
The LTC2374CUH-16#PBF supports three analog input configurations: fully differential (±4.096 V), pseudo-differential unipolar (0 V to 4.096 V), and pseudo-differential bipolar (±2.048 V). Each is selectable per channel via configuration registers and maintains ±1 LSB INL and specified SNR performance.
What is the power consumption of the LTC2374CUH-16#PBF in sleep mode?
In sleep mode, the LTC2374CUH-16#PBF draws only 300 µW (typical), achieved by disabling the reference buffer, ADC core, and digital interface. Wake-up time is 200 ms when re-enabling REFBUF, ensuring rapid resumption of high-accuracy conversion after idle periods.
LTC2374CUH-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):
- 1.6M
- Number of Inputs:
- 8
- Input Type:
- Differential, Pseudo-Differential, Single Ended
- 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:
- 1.71V ~ 5.25V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 32-QFN (5x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2374CUH-16#PBF FAQ
1.How can I place an order for LTC2374CUH-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2374CUH-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 LTC2374CUH-16#PBF reliable?
The price and inventory of LTC2374CUH-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 LTC2374CUH-16#PBF is usually 5 days.
3.What payment methods are accepted for LTC2374CUH-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2374CUH-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2374CUH-16#PBF?
LTC2374CUH-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2374CUH-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 LTC2374CUH-16#PBF?
For technical support, including LTC2374CUH-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2374CUH-16#PBF requirements.
6.How does Aetrix verify that LTC2374CUH-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2374CUH-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 LTC2374CUH-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2374CUH-16#PBF?
All LTC2374CUH-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2374CUH-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 LTC2374CUH-16#PBF part is unused and in its original packaging.
Return procedure for LTC2374CUH-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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