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Analog Devices Inc. LTC2323IUFD-16#TRPBF
- Part No.:
- LTC2323IUFD-16#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
LTC2323IUFD-16#TRPBF.pdf
- Description:
- IC ADC 16BIT SAR 28QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,548
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Product details
Overview
LTC2323IUFD-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 motor control and optical networking systems.
For engineers reviewing the LTC2323IUFD-16#TRPBF datasheet, LTC2323IUFD-16#TRPBF pinout, LTC2323IUFD-16#TRPBF application, or LTC2323IUFD-16#TRPBF equivalent, key selection criteria include guaranteed 16-bit no-missing-codes performance, LVDS/CMOS SPI-compatible interface support, wide input common mode range (0 V to VDD), 125°C-rated operation, and low-power nap/sleep modes enabling <5 µW standby consumption.
Technical Context
The LTC2323IUFD-16#TRPBF implements two independent SAR ADC cores with fully differential sample-and-hold front-ends, each supporting 8 VP-P differential input range and 10 MHz –3 dB linear bandwidth. Its internal reference buffers (REFOUT1/REFOUT2) deliver 4.096 V ±0.2% with ≤20 ppm/°C drift and are disableable via REFINT for external reference use.
It features dual-mode digital I/O: CMOS (1.8 V–2.5 V OVDD) or LVDS (2.5 V OVDD), with skew-matched CLKOUT+/CLKOUT– outputs synchronized to SDO data, ensuring deterministic timing for FPGA/DSP interfacing. Conversion is initiated by a falling edge on CNV, with fixed 171.5 ns conversion time and 28.5 ns acquisition window.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - guarantees full-scale quantization into 65,536 discrete levels with no missing codes across temperature. |
| Sampling Rate | 5 Msps per channel - enables real-time capture of signals up to 2.2 MHz with 32k-point FFT capability. |
| INL (Typ) | ±4 LSB - ensures monotonicity and linearity critical for closed-loop control and precision measurement. |
| SNR (Typ) | 81 dB at fIN = 2.2 MHz - supports >13.2 ENOB for high-fidelity signal reconstruction in imaging and comms. |
| Reference | Internal 4.096 V ±0.2%, 20 ppm/°C max - eliminates external reference component count and improves system thermal stability. |
| Power (5 Msps) | 40 mW per channel (CMOS mode, VDD = 5 V) - balances speed and efficiency for thermally constrained embedded designs. |
| Operating Temp | –40°C to +85°C - qualified for industrial and automotive under-hood environments without derating. |
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 EMI performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pins 1, 8) | Analog power supply | Single 3.3 V or 5 V rail powering ADC core and reference buffers; requires local 10 µF + 0.1 µF bypassing. |
| AIN1+, AIN1– (Pins 7, 6); AIN2+, AIN2– (Pins 2, 3) | Differential analog inputs | Two independent 8 VP-P input pairs accepting 0 V to VDD common mode; no configuration needed for unipolar/bipolar/pseudo-differential signals. |
| CNV (Pin 9) | Conversion start trigger | Falling-edge–sensitive input initiating hold-and-convert sequence; must be driven by low-jitter source for optimal aperture jitter (1 ps RMS). |
| SDO1+/SDO1–, SDO2+/SDO2– (Pins 15/16, 19/20) | Serial data outputs | Dual-channel MSB-first SPI output: CMOS mode uses SDOx+ only; LVDS mode requires 100 Ω differential termination at receiver. |
| SCK+, SCK– (Pins 21, 22) | Serial clock input | Accepts single-ended (CMOS) or differential (LVDS) clock up to 105 MHz; defines sampling instant and data shift timing. |
| CLKOUT+/CLKOUT– (Pins 17, 18) | Skew-matched output clock | Provides phase-aligned clock to latch SDO data at FPGA/DSP; eliminates setup/hold uncertainty in high-speed interfaces. |
| REFOUT1/REFOUT2 (Pins 12, 26) | Reference buffer outputs | Nominally 4.096 V buffered references for each ADC channel; decoupled with 10 µF + 0.1 µF capacitors; disableable via REFINT. |
| REFINT (Pin 28) | Reference enable control | Tie to VDD for internal reference; ground to disable REFOUT1/REFOUT2 and allow external 1.25 V–VDD reference injection. |
| CMOS/LVDS (Pin 25) | I/O interface mode select | GND = CMOS; OVDD = LVDS; floating = low-power LVDS - configures driver strength and termination requirements. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 16-bit SAR ADCs | Enables simultaneous sampling of two high-bandwidth signals (e.g., current/voltage in motor phases) without interleaving artifacts or timing skew. |
| 8 VP-P differential input range with 0 V to VDD common mode | Supports direct connection to op-amp outputs, isolated amplifiers, or transformer-coupled sources without level-shifting circuitry. |
| Onboard 4.096 V reference with ≤20 ppm/°C drift | Reduces BOM count and improves system-level accuracy over temperature vs. discrete reference solutions. |
| LVDS or CMOS SPI-compatible interface | Allows flexible host interfacing: LVDS for noise immunity over longer traces; CMOS for lower power and simpler routing. |
| Nap mode (3–5 mA) and sleep mode (1–5 µA) | Permits dynamic power scaling during idle periods in battery-powered or energy-conscious systems without losing configuration state. |
Applications
| High-Speed Motor Control | Optical Network Monitoring |
|---|---|
Use Scenario: Real-time sampling of phase currents and bus voltage in 3-phase inverters for field-oriented control (FOC) at switching frequencies up to 20 kHz. IC Role / Device Role / Timing Role: Dual-channel ADC providing synchronized, low-latency (171.5 ns) digitization of current sense and DC-link voltage with 1-cycle throughput. Use Value: Enables precise torque ripple suppression and overcurrent protection with 16-bit resolution and 81 dB SNR at 2.2 MHz. |
Use Scenario: Digitizing photodiode output and laser bias monitor signals in coherent optical transceivers for real-time signal integrity analysis. IC Role / Device Role / Timing Role: High-SNR ADC capturing fast transient events (e.g., burst-mode detection) with minimal aperture jitter (1 ps RMS) and wide dynamic range. Use Value: Supports >13 ENOB for accurate BER estimation and adaptive equalization in 100G+ optical links. |
| Industrial Data Acquisition | Automotive ADAS Sensor Fusion |
Use Scenario: Multi-sensor conditioning in programmable logic controllers (PLCs), acquiring vibration, temperature, and pressure signals from diverse transducers. IC Role / Device Role / Timing Role: Dual ADC with wide common mode range (0 V to VDD) accepting both grounded and floating sensor outputs without external level shifters. Use Value: Reduces signal chain complexity and improves channel-to-channel isolation (CMRR ≥85 dB) for mixed-signal industrial I/O modules. |
Use Scenario: Front-end digitization of radar IF signals and camera sensor analog outputs in centralized domain controllers for sensor fusion. IC Role / Device Role / Timing Role: Automotive-grade (–40°C to +85°C) dual ADC delivering deterministic latency and robust LVDS interface for EMI-prone vehicle environments. Use Value: Ensures timing coherence between radar and vision processing paths while meeting ASIL-B functional safety constraints via guaranteed no-missing-codes operation. |
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 (Analog Devices) | Parallel interface, ±10 V bipolar input range, on-chip PGA, 1 Msps per channel - slower but higher input flexibility and integrated gain. | Better suited for legacy microcontroller interfaces and multi-range industrial sensors; lacks LVDS and 5 Msps speed. | Select when system prioritizes ease of MCU integration over speed and noise floor. |
| ADS8900B (Texas Instruments) | Single-channel, 5 Msps, 16-bit SAR, 85 dB SNR, 1.8 V I/O, no internal reference - higher SNR but no dual-channel or reference integration. | Requires external reference and dual-device layout for two-channel operation; optimized for ultra-low-noise single-signal capture. | Select when highest SNR (85 dB) and lowest power (25 mW) are critical, and dual-channel sync is handled externally. |
Compared with AD7606C-16 and ADS8900B, the LTC2323IUFD-16#TRPBF uniquely combines dual-channel 5 Msps throughput, integrated 4.096 V reference, LVDS/CMOS interface flexibility, and guaranteed no-missing-codes operation - making it optimal for space-constrained, high-coherence, high-speed acquisition where board area and timing determinism are paramount.
Availability
LTC2323IUFD-16#TRPBF is available at Aetrix Electronics and suitable for high-speed motor control, optical network monitoring, and industrial data acquisition requiring stable component supply, long-term lifecycle assurance, and automotive-grade temperature compliance.
Supply support for LTC2323IUFD-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 (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC2323IUFD-16#TRPBF belongs to the Linear Technology LTC23xx family of high-speed precision SAR ADCs, designed specifically for demanding data acquisition systems requiring speed, accuracy, low power, and robust interface options in harsh environments.
FAQ
What is the maximum sampling rate supported by the LTC2323IUFD-16#TRPBF?
The LTC2323IUFD-16#TRPBF supports a maximum sampling rate of 5 Msps per channel, with a fixed conversion time of 171.5 ns and one-cycle latency. This allows full 16-bit data output on every SCK cycle at up to 105 MHz clock frequency, enabling real-time capture of signals with bandwidths up to 2.2 MHz. The LTC2323IUFD-16#TRPBF maintains this rate across its full operating temperature range (–40°C to +85°C).
Does the LTC2323IUFD-16#TRPBF require an external reference voltage?
No, the LTC2323IUFD-16#TRPBF includes two onboard low-drift (≤20 ppm/°C) 4.096 V reference buffers (REFOUT1 and REFOUT2), eliminating the need for an external reference in most applications. The internal reference can be disabled by grounding REFINT (Pin 28), allowing use of an external 1.25 V–VDD reference if higher accuracy or different voltage is required. The LTC2323IUFD-16#TRPBF's reference is fully characterized and guaranteed over temperature.
Can the LTC2323IUFD-16#TRPBF interface directly with an FPGA using LVDS signaling?
Yes, the LTC2323IUFD-16#TRPBF supports native LVDS I/O: SDO1+/SDO1–, SDO2+/SDO2–, SCK+/SCK–, and CLKOUT+/CLKOUT– are all LVDS-capable. When CMOS/LVDS (Pin 25) is tied to OVDD, the device configures for full LVDS operation with 100 Ω differential termination required at the FPGA receiver. The skew-matched CLKOUT ensures deterministic setup/hold timing, simplifying high-speed FPGA interface design. The LTC2323IUFD-16#TRPBF also provides low-power LVDS mode when Pin 25 is left floating.
What power-saving modes does the LTC2323IUFD-16#TRPBF offer?
The LTC2323IUFD-16#TRPBF offers two low-power states: Nap mode (3–5 mA total supply current) and Sleep mode (1–5 µA). Nap mode retains reference buffer bias and digital state while halting conversions; Sleep mode disables reference buffers and most internal circuitry. Both modes are entered via control register writes or hardware pins (CNV timing), and wake-up is fast (<10 ms for REFOUT stabilization). These modes make the LTC2323IUFD-16#TRPBF suitable for duty-cycled acquisition systems without sacrificing startup readiness.
Is the LTC2323IUFD-16#TRPBF pin-compatible with other members of the LTC2323 family?
Yes, the LTC2323IUFD-16#TRPBF shares identical pinout and package (28-lead 4 mm × 5 mm QFN) with all UFD-package variants of the LTC2323 family, including LTC2323CUFD-16#TRPBF (0°C to 70°C) and LTC2323HUFD-16#TRPBF (–40°C to 125°C). Electrical specifications differ only in temperature grade and associated AC/DC parameter limits; all share identical functionality, timing, and interface behavior. This allows drop-in replacement across temperature grades without PCB redesign. The LTC2323IUFD-16#TRPBF is the industrial-grade variant.
LTC2323IUFD-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:
- 1.71V ~ 2.63V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 28-QFN (4x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2323IUFD-16#TRPBF FAQ
1.How can I place an order for LTC2323IUFD-16#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2323IUFD-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 LTC2323IUFD-16#TRPBF reliable?
The price and inventory of LTC2323IUFD-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 LTC2323IUFD-16#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2323IUFD-16#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2323IUFD-16#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2323IUFD-16#TRPBF?
LTC2323IUFD-16#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2323IUFD-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 LTC2323IUFD-16#TRPBF?
For technical support, including LTC2323IUFD-16#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2323IUFD-16#TRPBF requirements.
6.How does Aetrix verify that LTC2323IUFD-16#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2323IUFD-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 LTC2323IUFD-16#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2323IUFD-16#TRPBF?
All LTC2323IUFD-16#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2323IUFD-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 LTC2323IUFD-16#TRPBF part is unused and in its original packaging.
Return procedure for LTC2323IUFD-16#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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