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Analog Devices Inc. LTC2323HUFD-12#TRPBF
- Part No.:
- LTC2323HUFD-12#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
LTC2323HUFD-12#TRPBF.pdf
- Description:
- IC ADC 12BIT SAR 28QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,369
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Product details
Overview
LTC2323HUFD-12#TRPBF from Analog Devices is a dual-channel, 12-bit + sign successive approximation register (SAR) analog-to-digital converter with differential inputs, 5 Msps throughput per channel, ±0.5 LSB typical INL, 73 dB SNR at 2 MHz input, and guaranteed operation to 125°C - designed for high-speed data acquisition in industrial motor control and optical networking systems.
For engineers reviewing the LTC2323HUFD-12#TRPBF datasheet, LTC2323HUFD-12#TRPBF pinout, LTC2323HUFD-12#TRPBF application, or LTC2323HUFD-12#TRPBF equivalent, key selection considerations include its dual-channel 5 Msps sampling rate, internal 2.048 V / 4.096 V low-drift reference, CMOS/LVDS SPI-compatible interface, wide common-mode input range (0 V to VDD), and 28-lead 4 mm × 5 mm QFN package with exposed pad thermal management.
Technical Context
The LTC2323HUFD-12#TRPBF implements a dual SAR architecture with independent sample-and-hold circuits per channel and one-cycle latency conversion timing. Its differential input stage supports fully differential, pseudo-differential bipolar, and pseudo-differential unipolar modes without hardware reconfiguration, with input common mode range spanning 0 V to VDD and differential range of ±REFOUT (±4.096 V or ±2.048 V).
It integrates two temperature-compensated reference buffers (20 ppm/°C max drift), configurable CMOS or LVDS serial I/O (with skew-matched CLKOUT), and three power states: active (38 mW/ch @ 5 V), nap (38 mW total), and sleep (5 μW). The CNV-controlled conversion start ensures deterministic timing alignment across both channels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit + sign (13-bit two's complement output), enabling bipolar signal digitization with sign bit explicitly encoded. |
| Throughput Rate | 5 Msps per channel, supporting real-time capture of fast transients in motor phase current or RF IF signals. |
| INL (Typ) | ±0.5 LSB, ensuring monotonicity and <1 LSB error across full temperature range (–40°C to 125°C). |
| SNR (Typ) | 73 dB at fIN = 2 MHz, delivering >12 ENOB for precision measurement in noisy industrial environments. |
| Input Range | ±4.096 V differential (or ±2.048 V) with 0 V to VDD common mode, allowing direct interfacing to op-amp outputs without level-shifting. |
| Reference | Internal 2.048 V / 4.096 V buffer (20 ppm/°C max drift), eliminating external reference component count and layout sensitivity. |
| Supply | Single 3.3 V or 5 V analog supply (VDD); separate 1.71–2.5 V digital I/O supply (OVDD) for mixed-voltage system compatibility. |
| Package | 28-lead 4 mm × 5 mm QFN with exposed thermal pad, optimized for thermal dissipation in compact high-density PCBs. |
Pinout & Package
28-lead (4 mm × 5 mm) QFN package with exposed thermal pad (Pin 29), rated for operation from –40°C to +125°C (H-grade). Pin functions validated per Analog Devices LTC2323-12 Rev. C datasheet, Figure 5 and Table 9.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pins 1, 8) | Analog power supply | Single 3.3 V or 5 V supply for ADC core and reference buffers; requires local 10 µF + 0.1 µF bypassing. |
| AIN1+, AIN1– (Pins 6, 7) AIN2+, AIN2– (Pins 2, 3) |
Differential analog inputs (CH1, CH2) | Support ±REFOUT differential range and 0 V to VDD common mode; no configuration needed for pseudo-differential or fully differential drive. |
| CNV (Pin 9) | Conversion start trigger | Falling-edge–initiated, low-jitter timing input; synchronizes both channels with one-cycle latency. |
| REFOUT1/REFRTN1 (Pins 12, 11) REFOUT2/REFRTN2 (Pins 26, 27) |
Independent reference outputs | Each channel has dedicated 4.096 V (or 2.048 V) buffered reference; REFRTN pins must be bypassed to respective REFOUT, not GND. |
| CMOS/LVDS (Pin 25) | I/O interface mode select | GND = CMOS; OVDD = LVDS; floating = low-power LVDS - enables noise-immune serial communication in EMI-prone environments. |
| SDO1+/SDO1–, SDO2+/SDO2– (Pins 15,16,19,20) CLKOUT+/CLKOUT– (Pins 17,18) |
Dual-channel serial data & clock outputs | LVDS mode requires 100 Ω differential termination at receiver; CLKOUT provides skew-matched latch timing for reliable high-speed readout. |
| REFINT (Pin 28) | Internal reference enable | Tie to VDD to activate internal buffers; tie to GND to disable and use external references (1.25 V to VDD). |
| Exposed Pad (Pin 29) | Thermal & electrical ground | Must be soldered to solid ground plane for thermal performance and noise reduction; contributes to 125°C operation capability. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 5 Msps SAR cores | Enables simultaneous sampling of two high-bandwidth signals (e.g., motor phase currents) with deterministic inter-channel timing alignment. |
| Wide common-mode input range (0 V to VDD) | Eliminates need for input level-shifting circuitry when interfacing with op-amps powered from same rail as VDD. |
| Configurable CMOS/LVDS serial interface | LVDS mode reduces EMI and supports >100 MHz SCK rates; CMOS mode simplifies integration with FPGA/ASIC GPIO banks. |
| Onboard 2.048 V / 4.096 V reference buffers | 20 ppm/°C max drift ensures stable full-scale accuracy over industrial temperature range without external trimming components. |
| Three power states (active/nap/sleep) | Reduces idle power to 5 μW - critical for battery-backed or energy-conscious remote data acquisition nodes. |
| No missing codes at 12 bits | Guaranteed monotonicity simplifies firmware calibration and eliminates need for post-conversion code correction logic. |
Applications
| Motor Phase Current Sensing | Optical Network Monitoring |
|---|---|
|
Use Scenario: Real-time sampling of two-phase currents in servo drives or inverters operating up to 20 kHz PWM frequencies. IC Role / Device Role / Timing Role: Dual-channel synchronous ADC capturing interleaved current waveforms with 200 ns cycle time and one-cycle latency for closed-loop control. Use Value: Enables precise field-oriented control (FOC) with <1 LSB INL error across –40°C to 125°C, reducing torque ripple and improving efficiency. |
Use Scenario: Digitizing photodiode output voltages from wavelength-selective monitors in DWDM transceivers. IC Role / Device Role / Timing Role: High-SNR ADC converting low-amplitude, high-frequency optical monitoring signals with minimal added quantization noise. Use Value: 73 dB SNR at 2 MHz preserves dynamic range for detecting small power variations (<0.1 dB) across 40+ channels. |
| Remote Industrial Data Acquisition | High-Speed Communications Test Equipment |
|
Use Scenario: Compact, thermally robust DAQ node deployed in oil & gas wellhead controllers exposed to ambient temperatures up to 125°C. IC Role / Device Role / Timing Role: Dual-channel ADC with integrated reference and wide common-mode range acquiring sensor outputs (pressure, temp, vibration) without signal conditioning. Use Value: Guaranteed 125°C operation and 38 mW/ch power dissipation allow fanless enclosure design with long-term reliability. |
Use Scenario: Capturing baseband I/Q signals in 5G NR test equipment requiring >5 Msps sustained sampling with low harmonic distortion. IC Role / Device Role / Timing Role: Dual ADC providing synchronized I and Q path digitization with –85 dB THD at 2 MHz for accurate EVM calculation. Use Value: Low THD and SFDR >78 dB support compliance testing of wideband modulated signals per 3GPP standards. |
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 |
|---|---|---|---|
| AD7322BRUZ | 12-bit, dual, 1 MSPS; ±10 V/±5 V/±2.5 V/0–10 V software-selectable input ranges; no internal reference; 24-lead TSSOP. | Lower speed suits slower industrial PLC analog inputs; requires external reference and level-shifting for bipolar signals. | Select when lower cost and software-configurable ranges outweigh need for 5 Msps throughput and integrated reference. |
| ADS8862IDRCT | 16-bit, single-channel, 1 MSPS; SPI interface only; 2.5 V supply; 10-lead VSON; no internal reference. | Higher resolution but half the channel count and speed; targets precision instrumentation over high-speed acquisition. | Select when absolute accuracy >14 ENOB is required for static measurements, and dual-channel parallel sampling is unnecessary. |
Compared with AD7322BRUZ and ADS8862IDRCT, the LTC2323HUFD-12#TRPBF uniquely combines dual 5 Msps throughput, integrated low-drift reference, wide common-mode input, and 125°C operation - making it the only option qualified for high-bandwidth, thermally demanding, space-constrained applications like motor control edge nodes and optical line cards.
Availability
LTC2323HUFD-12#TRPBF is available at Aetrix Electronics and suitable for high-speed data acquisition systems, optical networking modules, and multiphase motor control designs requiring stable component supply across extended temperature and long production lifecycles.
Supply support for LTC2323HUFD-12#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 since 1965.
The LTC2323HUFD-12#TRPBF belongs to Analog Devices' high-speed precision SAR ADC product line, engineered specifically for applications demanding simultaneous dual-channel sampling, wide dynamic range, and ruggedized operation in harsh thermal environments.
FAQ
What is the maximum operating temperature for the LTC2323HUFD-12#TRPBF?
The LTC2323HUFD-12#TRPBF is an H-grade device rated for continuous operation from –40°C to +125°C. This specification is guaranteed across all electrical parameters in the datasheet, including INL, SNR, and reference stability, making it suitable for under-hood automotive, downhole oil & gas, and industrial motor drive applications where ambient temperatures exceed 105°C.
Does the LTC2323HUFD-12#TRPBF require external reference components?
No - the LTC2323HUFD-12#TRPBF integrates two independent, low-drift (20 ppm/°C max) reference buffers delivering either 2.048 V or 4.096 V. These buffers are enabled by default when REFINT is tied to VDD. External references are optional and only needed if higher accuracy, different voltage levels, or tighter drift specs are required; in that case, REFINT must be grounded to disable internal buffers before connecting external sources to REFOUT1/REFOUT2.
How does the CMOS/LVDS pin (Pin 25) affect interface configuration for the LTC2323HUFD-12#TRPBF?
The CMOS/LVDS pin on the LTC2323HUFD-12#TRPBF selects the serial interface standard: grounding it configures CMOS-level SDO/CLKOUT outputs (OVDD-referenced), tying it to OVDD enables full LVDS differential signaling (requiring 100 Ω termination), and leaving it floating activates low-power LVDS mode. This pin also determines whether SDO1–/SDO2–/CLKOUT– pins are functional (LVDS) or must remain unconnected (CMOS).
Can the LTC2323HUFD-12#TRPBF accept single-ended input signals?
Yes - the LTC2323HUFD-12#TRPBF supports pseudo-differential unipolar and bipolar configurations without hardware changes. For single-ended signals, connect the reference (e.g., system ground or mid-rail) to one AIN pin and the signal to the other. Its wide 0 V to VDD common-mode range and 8 VP-P differential span allow direct digitization of op-amp outputs, eliminating external level-shifting or gain stages in many cases.
What power-saving modes does the LTC2323HUFD-12#TRPBF support, and how are they controlled?
The LTC2323HUFD-12#TRPBF offers three power states: active (38 mW/ch @ 5 V), nap (38 mW total), and sleep (5 μW). Nap mode is entered automatically after conversion completion; sleep mode is activated via SPI command or hardware reset. Both modes retain register settings and reference bias, enabling sub-microsecond wake-up while minimizing idle power in battery-powered or thermally constrained systems.
LTC2323HUFD-12#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:
- 12
- 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:
- -40°C ~ 125°C
- Supplier Device Package:
- 28-QFN (4x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2323HUFD-12#TRPBF FAQ
1.How can I place an order for LTC2323HUFD-12#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2323HUFD-12#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 LTC2323HUFD-12#TRPBF reliable?
The price and inventory of LTC2323HUFD-12#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2323HUFD-12#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2323HUFD-12#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2323HUFD-12#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2323HUFD-12#TRPBF?
LTC2323HUFD-12#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2323HUFD-12#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 LTC2323HUFD-12#TRPBF?
For technical support, including LTC2323HUFD-12#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2323HUFD-12#TRPBF requirements.
6.How does Aetrix verify that LTC2323HUFD-12#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2323HUFD-12#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 LTC2323HUFD-12#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2323HUFD-12#TRPBF?
All LTC2323HUFD-12#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2323HUFD-12#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 LTC2323HUFD-12#TRPBF part is unused and in its original packaging.
Return procedure for LTC2323HUFD-12#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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