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Analog Devices Inc. LTC2323CUFD-16#TRPBF
- Part No.:
- LTC2323CUFD-16#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
LTC2323CUFD-16#TRPBF.pdf
- Description:
- IC ADC 16BIT SAR 28QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,230
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Product details
Overview
LTC2323CUFD-16#TRPBF from Analog Devices is a dual-channel, 16-bit, 5 Msps successive approximation register (SAR) analog-to-digital converter with differential inputs, ±4 LSB typical INL, 81 dB SNR at 2.2 MHz, and integrated 4.096 V temperature-compensated reference. It operates from a single 3.3 V or 5 V supply and delivers one-cycle latency for high-speed data acquisition in precision instrumentation and communications systems.
For engineers reviewing the LTC2323CUFD-16#TRPBF datasheet, LTC2323CUFD-16#TRPBF pinout, LTC2323CUFD-16#TRPBF application, or LTC2323CUFD-16#TRPBF equivalent, key selection considerations include its dual-channel 5 Msps throughput, LVDS/CMOS serial interface flexibility, wide input common-mode range (0 V to VDD), guaranteed no-missing-codes performance, and operation across 0°C to 70°C.
Technical Context
The LTC2323CUFD-16#TRPBF implements two independent SAR ADC cores, each with dedicated sample-and-hold, 16-bit CDAC, and differential comparator. Its architecture supports simultaneous sampling via shared CNV control and delivers conversion results with one-cycle latency over a high-speed SPI-compatible interface.
It integrates two low-drift (≤20 ppm/°C) reference buffers (REFOUT1/REFOUT2), configurable CMOS or LVDS I/O (via CMOS/LVDS pin), and power management modes (nap/sleep) enabling 5 µW standby consumption. Input common-mode rejection exceeds 85 dB at 2.2 MHz, and aperture jitter is specified at 1 psRMS.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - guarantees full 65,536-code output range without missing codes |
| Sampling Rate | 5 Msps per channel - enables real-time capture of signals up to 2.5 MHz Nyquist bandwidth |
| INL (typ) | ±4 LSB - ensures monotonicity and <0.006% full-scale linearity error for precision measurement |
| SNR (typ) | 81 dB at fIN = 2.2 MHz - supports >13.1 ENOB for high-fidelity signal digitization |
| Reference | Internal 4.096 V ±0.2% buffered output - eliminates external reference component and layout complexity |
| Supply | Single 3.3 V or 5 V - simplifies power rail design versus split-supply ADCs |
| Interface | CMOS or LVDS SPI-compatible - allows direct FPGA/CPLD connection with noise-immune differential option |
| Power (typ) | 40 mW per channel at 5 Msps - balances speed and efficiency for thermally constrained systems |
Pinout & Package
Package: 28-lead (4 mm × 5 mm) plastic QFN (UFD) with exposed pad (Pin 29) soldered to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (1, 8) | Analog power supply | Must be bypassed with 10 µF + 0.1 µF ceramics; both pins tied together to single 3.3 V or 5 V rail |
| AIN1+, AIN1– (6, 7); AIN2+, AIN2– (2, 3) | Differential analog inputs | Accept ±4.096 V differential swing with 0 V to VDD common-mode range; no configuration required |
| CNV (9) | Conversion start trigger | Falling edge initiates hold-and-convert; requires low-jitter digital source synchronized to OVDD logic levels |
| SCK+, SCK– (21, 22) | Serial clock input | Single-ended CMOS (SCK+) or differential LVDS (SCK+/SCK–); 100 Ω termination required in LVDS mode |
| SDO1+, SDO1– / SDO2+, SDO2– (15, 16, 19, 20) | Channel 1 & 2 serial data outputs | MSB-first, SPI-compatible; CMOS uses SDOx+ only; LVDS requires differential 100 Ω termination at receiver |
| CLKOUT+, CLKOUT– (17, 18) | Skew-matched output clock | Provides timing-aligned latch signal for SDO; eliminates setup/hold violations in high-speed FPGA interfaces |
| REFOUT1, REFOUT2 (12, 26) | Reference buffer outputs | Nominally 4.096 V; decoupled with 10 µF + 0.1 µF ceramics; disabled when REFINT = GND for external reference use |
| CMOS/LVDS (25) | I/O interface mode select | GND = CMOS; OVDD = LVDS; floating = low-power LVDS - configures driver strength and termination behavior |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 16-bit SAR cores | Enables time-synchronized sampling of two analog channels without interleaving artifacts or timing skew |
| Onboard 4.096 V reference with ≤20 ppm/°C drift | Eliminates need for external precision reference IC and reduces BOM count, layout area, and calibration effort |
| LVDS or CMOS serial interface selection | Allows noise-immune long-reach interconnect (LVDS) or low-power board-level communication (CMOS) via single pin strap |
| One-cycle latency with 5 Msps throughput | Supports deterministic real-time control loops with minimal processing delay between sampling and data availability |
| Nap and sleep power modes | Reduces active current to 3–5 mA (nap) or 1–5 µA (sleep), extending battery life or lowering thermal load during idle periods |
| 85 dB CMRR at 2.2 MHz | Rejects high-frequency common-mode noise from motor drives, switching supplies, or RF sources in industrial environments |
Applications
| High-Speed Data Acquisition | Optical Networking |
|---|---|
Use Scenario: Real-time digitization of sensor outputs in automated test equipment with sub-200 ns acquisition time and deterministic latency. IC Role / Device Role / Timing Role: Dual-channel ADC capturing synchronized analog waveforms at 5 Msps with one-cycle latency and 81 dB SNR. Use Value: Enables 16-bit resolution at multi-MHz rates without interpolation or oversampling, reducing FPGA resource usage and system latency. | Use Scenario: Monitoring laser bias current and photodiode feedback in 100G/400G coherent transceivers requiring precise DC and AC signal fidelity. IC Role / Device Role / Timing Role: High-linearity ADC converting analog monitor signals with 85 dB CMRR to suppress switching noise from adjacent DC-DC converters. Use Value: Maintains signal integrity in dense optical modules where EMI and thermal drift threaten measurement accuracy. |
| Automotive Motor Control | Communications Baseband |
Use Scenario: Sampling phase currents in three-phase inverter systems for field-oriented control (FOC) in EV traction inverters. IC Role / Device Role / Timing Role: Dual ADC simultaneously acquiring two current sensors with ±4 LSB INL and guaranteed no-missing-codes over –40°C to 125°C (H-grade variants). Use Value: Ensures accurate torque estimation and fault detection under harsh thermal cycling, supporting ASIL-B functional safety compliance. | Use Scenario: Digitizing intermediate frequency (IF) signals in software-defined radio (SDR) receivers operating up to 2.2 MHz input bandwidth. IC Role / Device Role / Timing Role: Low-jitter SAR ADC delivering 81 dB SNR and –87 dB THD for clean spectral representation of modulated carriers. Use Value: Preserves EVM and adjacent channel leakage ratio (ACLR) in LTE/5G baseband processing without requiring post-processing correction. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel 16-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7606C-16 | 8-channel, parallel/serial interface; internal reference selectable (2.5 V/4.096 V); 1 MSPS per channel; no LVDS option | Better suited for multi-channel data loggers than dual-channel high-speed streaming; lacks LVDS noise immunity | Select when higher channel count and lower cost per channel outweigh 5× lower throughput and absence of LVDS |
| ADS8900B | Single-channel, 20 MSPS; 16-bit; no internal reference; requires external REF; CMOS-only interface; 77 dB SNR | Targeted at ultra-high-speed single-signal capture (e.g., radar pulse analysis), not dual-channel synchronized acquisition | Select when maximum sample rate is critical and dual-channel synchronization is unnecessary or handled externally |
Compared with AD7606C-16 and ADS8900B, the LTC2323CUFD-16#TRPBF uniquely combines dual-channel 5 Msps throughput, integrated 4.096 V reference, and LVDS/CMOS interface flexibility-making it optimal for space-constrained, noise-sensitive, synchronized dual-signal applications where latency and linearity are critical.
Availability
LTC2323CUFD-16#TRPBF is available at Aetrix Electronics and suitable for high-speed data acquisition systems, optical networking monitoring circuits, and automotive motor control designs requiring stable component supply, traceable sourcing, and lifecycle continuity.
Supply support for LTC2323CUFD-16#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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC2323CUFD-16#TRPBF belongs to the Linear Technology SAR ADC product line, designed specifically for precision, high-speed data acquisition in thermally demanding and electrically noisy environments.
FAQ
What is the maximum sampling rate supported by the LTC2323CUFD-16#TRPBF?
The LTC2323CUFD-16#TRPBF supports a maximum sampling rate of 5 Msps per channel, with guaranteed timing specifications including tCYC = 200 ns minimum and one-cycle latency. This rate is achievable with either CMOS or LVDS interface modes and is fully characterized across the 0°C to 70°C operating temperature range for the C-grade variant.
Does the LTC2323CUFD-16#TRPBF require an external reference voltage?
No, the LTC2323CUFD-16#TRPBF includes two onboard 4.096 V temperature-compensated reference buffers (REFOUT1 and REFOUT2) with ≤20 ppm/°C drift. An external reference may be used by grounding REFINT (Pin 28), but it is not required. The internal reference is factory-trimmed and fully specified for accuracy and stability.
How does the CMOS/LVDS pin (Pin 25) configure the interface mode on the LTC2323CUFD-16#TRPBF?
The CMOS/LVDS pin (Pin 25) selects the digital interface standard: grounded for CMOS mode (single-ended SDO/CLKOUT/SCK), tied to OVDD for standard LVDS mode (differential signaling), or left floating for low-power LVDS mode. Each mode sets appropriate driver strength, termination requirements, and power consumption-no external configuration registers are needed.
What is the purpose of the exposed pad (Pin 29) on the LTC2323CUFD-16#TRPBF package?
The exposed pad (Pin 29) is electrically and thermally connected to GND. It must be soldered directly to a solid PCB ground plane to ensure proper thermal dissipation (θJA = 43°C/W) and low-impedance return path for analog and digital grounds. Failure to connect this pad compromises both thermal performance and noise immunity.
Can the LTC2323CUFD-16#TRPBF operate with a 3.3 V supply while maintaining full 5 Msps performance?
Yes, the LTC2323CUFD-16#TRPBF is fully specified for 5 Msps operation with VDD = 3.3 V (3.13 V to 3.47 V). Power dissipation is 55–65 mW per channel in CMOS mode and 58–86 mW in LVDS mode at this supply, with all dynamic performance metrics-including 81 dB SNR and ±4 LSB INL-maintained across the full temperature range.
LTC2323CUFD-16#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 28-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 5M
- Number of Inputs:
- 2
- Input Type:
- Differential, Pseudo-Differential
- Data Interface:
- LVDS - Serial, Serial
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 2
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 3.13V ~ 3.47V, 5V
- Voltage - Supply, Digital:
- 3.13V ~ 3.47V, 5V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 28-QFN (4x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2323CUFD-16#TRPBF FAQ
1.How can I place an order for LTC2323CUFD-16#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2323CUFD-16#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 LTC2323CUFD-16#TRPBF reliable?
The price and inventory of LTC2323CUFD-16#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2323CUFD-16#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2323CUFD-16#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2323CUFD-16#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2323CUFD-16#TRPBF?
LTC2323CUFD-16#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2323CUFD-16#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 LTC2323CUFD-16#TRPBF?
For technical support, including LTC2323CUFD-16#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2323CUFD-16#TRPBF requirements.
6.How does Aetrix verify that LTC2323CUFD-16#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2323CUFD-16#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 LTC2323CUFD-16#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2323CUFD-16#TRPBF?
All LTC2323CUFD-16#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2323CUFD-16#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 LTC2323CUFD-16#TRPBF part is unused and in its original packaging.
Return procedure for LTC2323CUFD-16#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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