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Analog Devices Inc. LTC2323IUFD-16#PBF
- Part No.:
- LTC2323IUFD-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
LTC2323IUFD-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 28QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,122
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Product details
Overview
LTC2323IUFD-16#PBF from Analog Devices is a dual, 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 single 3.3 V or 5 V supply, supports CMOS/LVDS serial interface, and targets high-speed data acquisition in industrial and automotive systems.
For engineers reviewing the LTC2323IUFD-16#PBF datasheet, LTC2323IUFD-16#PBF pinout, LTC2323IUFD-16#PBF application, or LTC2323IUFD-16#PBF equivalent, key selection criteria include guaranteed 16-bit no-missing-codes performance, 1-cycle latency, wide input common mode range (0 V to VDD), and operation across –40°C to +85°C.
Technical Context
The LTC2323IUFD-16#PBF implements two independent SAR ADC cores sharing a common reference architecture and digital interface. Each channel achieves 5 Msps throughput with one-cycle latency and uses internal 4.096 V reference buffered at REFOUT1/REFOUT2, configurable via REFINT pin.
Its analog front-end supports 8 VP-P differential input range with ±REFOUT1,2 full-scale, 85 dB CMRR at 2.2 MHz, and 10 MHz –3 dB input linear bandwidth. Digital interface supports either CMOS (1.8 V–2.5 V OVDD) or LVDS (2.5 V OVDD) modes selected by CMOS/LVDS pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - guarantees no missing codes and full 65,536-level quantization for precision measurement systems. |
| Sampling Rate | 5 Msps per channel - enables real-time capture of signals up to ~2.2 MHz Nyquist bandwidth without undersampling. |
| INL (typ) | ±4 LSB - ensures monotonicity and linearity error ≤ ±0.06% of full scale, critical for closed-loop control accuracy. |
| SNR (typ) | 81 dB at fIN = 2.2 MHz - delivers >13.2 effective bits for high-fidelity signal reconstruction in imaging or comms. |
| Reference | Internal 4.096 V ±20 ppm/°C - eliminates external reference component count while maintaining stability over –40°C to +85°C. |
| Power (typ) | 40 mW per channel at 5 Msps - balances speed and efficiency for thermally constrained embedded DAQ designs. |
| Interface | SPI-compatible CMOS or LVDS - supports FPGA/CPLD interfacing with skew-matched CLKOUT for timing-critical sampling. |
Pinout & Package
Package: 28-lead (4 mm × 5 mm) plastic QFN with exposed pad (Pin 29 = GND). Requires soldering exposed pad to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pins 1, 8) | Analog power supply | Single 3.3 V or 5 V supply for ADC core; bypassed with 10 µF + 0.1 µF ceramics for low-noise operation. |
| AIN1+, AIN1– (Pins 7, 6); AIN2+, AIN2– (Pins 2, 3) | Differential analog inputs | Support 8 VP-P full-scale range with 0 V to VDD common mode; no configuration required for unipolar/bipolar/pseudo-differential signals. |
| CNV (Pin 9) | Conversion start trigger | Falling edge initiates sample-and-hold hold phase and conversion; requires low-jitter source for <1 ps RMS aperture jitter. |
| SCK+, SCK– (Pins 21, 22) | Serial clock input | Differential LVDS or single-ended CMOS clock; 105 MHz max frequency supports 5 Msps readout with 1-cycle latency. |
| SDO1+/–, SDO2+/– (Pins 15–16, 19–20) | Channel 1 & 2 serial data outputs | MSB-first SPI output; LVDS mode requires 100 Ω differential termination at receiver (e.g., FPGA). |
| CLKOUT+/– (Pins 17–18) | Skew-matched output clock | Provides latch timing aligned to SDO edges; eliminates setup/hold violations in high-speed FPGA interfaces. |
| REFOUT1/2 (Pins 12, 26) | Reference buffer outputs | Nominally 4.096 V; disable via REFINT = GND to use external 1.25 V–5 V reference. |
| CMOS/LVDS (Pin 25) | I/O mode select | GND = CMOS; OVDD = LVDS; floating = low-power LVDS - configures interface voltage levels and drive strength. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 16-bit SAR channels | Enables simultaneous sampling of two signals (e.g., current/voltage in motor control) without interleaving artifacts or timing skew. |
| Onboard 4.096 V reference with 20 ppm/°C drift | Removes need for external precision reference IC, reducing BOM count and layout area while meeting industrial temp range requirements. |
| CMOS or LVDS selectable interface | Allows direct connection to 1.8 V/2.5 V FPGAs or high-speed LVDS receivers without level-shifting circuitry. |
| One-cycle latency & 5 Msps throughput | Minimizes processing delay in real-time control loops; supports deterministic timing for servo and power electronics applications. |
| Nap/sleep modes (5 µW standby) | Reduces system power during idle periods in battery-powered or energy-sensitive remote DAQ nodes. |
Applications
| High-Speed Motor Control | Optical Network Monitoring |
|---|---|
Use Scenario: Simultaneous sampling of phase current and bus voltage in three-phase inverter drives operating at switching frequencies up to 20 kHz. IC Role / Device Role / Timing Role: Dual-channel ADC provides synchronized, low-latency digitization with 1-cycle delay for real-time field-oriented control (FOC) algorithms. Use Value: 81 dB SNR and ±4 LSB INL ensure accurate torque estimation and minimize current ripple in closed-loop PWM generation. | Use Scenario: Real-time monitoring of optical transceiver bias currents and photodiode outputs in 100G/400G coherent modules. IC Role / Device Role / Timing Role: High-speed differential ADC captures fast transient events (e.g., laser bias drift, TEC response) with minimal aperture jitter. Use Value: 1 ps RMS aperture jitter and 10 MHz input bandwidth preserve signal fidelity for BER analysis and adaptive equalization calibration. |
| Automotive Radar Signal Conditioning | Industrial Data Acquisition Systems |
Use Scenario: Digitizing IF outputs from 77 GHz radar receivers in ADAS front-end modules under extended temperature conditions. IC Role / Device Role / Timing Role: Dual ADC channel handles I/Q demodulated signals with guaranteed operation from –40°C to +125°C (H-grade variant available). Use Value: Wide 0 V to VDD common mode range simplifies anti-alias filter design and relaxes op-amp rail requirements in harsh EMI environments. | Use Scenario: Modular DAQ units deployed in factory-floor vibration monitoring, where long-term stability and multi-sensor synchronization are critical. IC Role / Device Role / Timing Role: Precision ADC with internal reference and low-drift performance replaces external reference + ADC combos in compact form factors. Use Value: 20 ppm/°C reference drift and 85 dB CMRR suppress noise from shared power rails and ground loops in dense sensor arrays. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, high-speed SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7606C-16 | 8-channel, 16-bit, 1 MSPS, parallel/serial interface; internal 2.5 V ref; no LVDS option | Better suited for multi-channel, lower-speed systems requiring simpler digital interface and higher channel density | Select when >2 channels needed and LVDS timing alignment is not required |
| ADS8900B | Single-channel, 16-bit, 1 MSPS, SPI-only CMOS interface; 92 dB SNR; 1.8 V supply | Optimized for ultra-low-power portable instrumentation with single-ended inputs and smaller package | Select for battery-powered handheld test equipment where dual-channel sync is unnecessary |
Compared with AD7606C-16 and ADS8900B, the LTC2323IUFD-16#PBF uniquely delivers dual-channel 5 Msps sampling with LVDS timing alignment and integrated 4.096 V reference-enabling high-fidelity, synchronized acquisition in space-constrained, thermally demanding industrial and automotive platforms.
Availability
LTC2323IUFD-16#PBF is available at Aetrix Electronics and suitable for high-speed motor control, optical network monitoring, automotive radar signal conditioning, and industrial data acquisition systems requiring stable component supply across extended temperature ranges.
Supply support for LTC2323IUFD-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 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#PBF belongs to the Linear Technology SAR ADC product line, designed specifically for high-speed, high-accuracy data acquisition in thermally demanding environments where low latency, low noise, and integrated reference stability are critical.
FAQ
What is the operating temperature range of the LTC2323IUFD-16#PBF?
The LTC2323IUFD-16#PBF is rated for –40°C to +85°C (I-grade), verified across all electrical specifications including INL, SNR, and reference drift. This range supports deployment in industrial control cabinets and automotive under-hood applications without derating. The LTC2323IUFD-16#PBF maintains ±4 LSB INL and 81 dB SNR across this full range, as confirmed in the manufacturer's Electrical Characteristics table.
Does the LTC2323IUFD-16#PBF require an external reference?
No, the LTC2323IUFD-16#PBF integrates a 4.096 V temperature-compensated reference with ≤20 ppm/°C drift, eliminating the need for external reference components. REFOUT1 and REFOUT2 pins provide buffered outputs; grounding REFINT disables both buffers to allow external reference injection (1.25 V–5 V range). The LTC2323IUFD-16#PBF's internal reference is fully characterized and guaranteed over temperature.
How does the LVDS interface of the LTC2323IUFD-16#PBF improve timing integrity?
The LTC2323IUFD-16#PBF provides skew-matched CLKOUT+/– outputs that align precisely with SDO1+/– and SDO2+/– data edges, reducing timing uncertainty in FPGA-based receivers. With <1 ps RMS aperture jitter and matched trace-length requirements satisfied, the LVDS interface enables reliable 5 Msps sampling without setup/hold violations. This timing integrity is intrinsic to the LTC2323IUFD-16#PBF's silicon design and validated in the Timing Characteristics table.
Can the LTC2323IUFD-16#PBF accept single-ended input signals?
Yes-the LTC2323IUFD-16#PBF supports pseudo-differential unipolar and bipolar configurations without hardware reconfiguration. For single-ended signals, connect the reference (e.g., ground or mid-rail) to AIN– and the signal to AIN+, leveraging the device's 0 V to VDD common mode range and 85 dB CMRR. The LTC2323IUFD-16#PBF's input structure inherently rejects common-mode noise, preserving SNR even with asymmetric drive.
What power-saving modes does the LTC2323IUFD-16#PBF support?
The LTC2323IUFD-16#PBF offers Nap Mode (3–5 mA) and Sleep Mode (1–5 µA), both activated via CNV sequencing. In Sleep Mode, total power drops to 5 µW-ideal for wake-on-event architectures in remote sensors. Power states are fully specified in the Power Requirements table, and transitions are glitch-free with no initialization delay upon wake-up. The LTC2323IUFD-16#PBF maintains reference stability during mode transitions.
LTC2323IUFD-16#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 28-WFQFN Exposed Pad
- Packaging:
- Tube
- 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#PBF FAQ
1.How can I place an order for LTC2323IUFD-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2323IUFD-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 LTC2323IUFD-16#PBF reliable?
The price and inventory of LTC2323IUFD-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 LTC2323IUFD-16#PBF is usually 5 days.
3.What payment methods are accepted for LTC2323IUFD-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2323IUFD-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2323IUFD-16#PBF?
LTC2323IUFD-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2323IUFD-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 LTC2323IUFD-16#PBF?
For technical support, including LTC2323IUFD-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2323IUFD-16#PBF requirements.
6.How does Aetrix verify that LTC2323IUFD-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2323IUFD-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 LTC2323IUFD-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2323IUFD-16#PBF?
All LTC2323IUFD-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2323IUFD-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 LTC2323IUFD-16#PBF part is unused and in its original packaging.
Return procedure for LTC2323IUFD-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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