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Analog Devices Inc. LTC2323IUFD-14#PBF
- Part No.:
- LTC2323IUFD-14#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
LTC2323IUFD-14#PBF.pdf
- Description:
- IC ADC 14BIT SAR 28QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,935
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Product details
Overview
LTC2323IUFD-14#PBF from Analog Devices is a dual, 14-bit + sign successive approximation register (SAR) analog-to-digital converter with differential inputs, 5 Msps per channel throughput, ±1 LSB typical INL, 80 dB SNR at 2.2 MHz, and integrated 2.048 V / 4.096 V temperature-compensated reference. It operates from single 3.3 V or 5 V supply and supports CMOS or LVDS serial interface for high-speed data acquisition in motor control and optical networking.
For engineers reviewing the LTC2323IUFD-14#PBF datasheet, LTC2323IUFD-14#PBF pinout, LTC2323IUFD-14#PBF application, or LTC2323IUFD-14#PBF equivalent, key selection criteria include guaranteed 14-bit no-missing-codes performance, wide input common mode range (0 V to VDD), 1.8 V–2.5 V I/O voltage compatibility, and operation across –40°C to +85°C industrial temperature range.
Technical Context
The LTC2323IUFD-14#PBF implements two independent SAR ADC cores with shared reference buffers and dual-channel LVDS/CMOS serial output. Each channel features one-cycle latency, 171.5 ns conversion time, and aperture jitter of 1 ps RMS - enabling precise timing-critical sampling in multiphase motor control and communications systems.
Its flexible analog input architecture supports fully differential, pseudo-differential bipolar, and pseudo-differential unipolar modes without hardware configuration. The internal reference provides 20 ppm/°C max drift over temperature, and the device includes dedicated REFRTN1/REFRTN2 return pins to maintain reference accuracy under load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit + sign (15-bit two's complement output), delivering 250 µV LSB step size with 4.096 V reference. |
| Sampling Rate | 5 Msps per channel - enables real-time capture of signals up to 10 MHz linear bandwidth. |
| INL | ±1 LSB typical - ensures monotonicity and accurate representation of fast transient waveforms. |
| SNR | 80 dB typical at fIN = 2.2 MHz - supports >12.9 ENOB for high-fidelity signal digitization. |
| Power Dissipation | 38 mW per channel at 5 Msps (5 V supply, CMOS mode) - balances speed and thermal management in dense PCB layouts. |
| Operating Temp | –40°C to +85°C - qualified for industrial embedded and automotive under-hood applications. |
| Reference | Internal 2.048 V / 4.096 V, low-drift (≤20 ppm/°C), with REFINT pin to disable for external reference use. |
Pinout & Package
Package: 28-lead (4 mm × 5 mm) plastic QFN with exposed pad (Pin 29 = GND). Requires soldering of 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; bypassed with 10 µF + 0.1 µF ceramics; both pins must be shorted and driven from same rail. |
| AIN1+, AIN1– (Pins 7, 6); AIN2+, AIN2– (Pins 2, 3) | Differential analog inputs | Support fully differential, pseudo-differential bipolar/unipolar modes; common mode range 0 V to VDD; no configuration required. |
| CNV (Pin 9) | Conversion start trigger | Falling edge initiates hold-and-convert; requires low-jitter digital source at OVDD logic levels. |
| SCK+, SCK– (Pins 21, 22) | Serial clock input | Differential LVDS or single-ended CMOS clock; 9.4 ns min period supports up to 105 MHz SCK frequency. |
| SDO1+/SDO1–, SDO2+/SDO2– (Pins 15/16, 19/20) | Channel 1 & 2 serial data outputs | MSB-first, SPI-compatible; LVDS mode requires 100 Ω differential termination at receiver; CMOS mode uses only + pin. |
| CLKOUT+, CLKOUT– (Pins 17, 18) | Skew-matched output clock | Provides phase-aligned clock to latch SDO data at FPGA/DSP; disabled in CMOS mode by tying CLKOUT– to OVDD. |
| REFOUT1/REFOUT2 (Pins 12, 26) | Reference buffer outputs | Nominally 4.096 V; decoupled with 0.1 µF + 10 µF ceramics; REFINT (Pin 28) disables buffers for external reference use. |
| CMOS/LVDS (Pin 25) | I/O interface mode select | GND = CMOS; OVDD = LVDS; floating = low-power LVDS - determines driver strength and termination requirements. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent SAR cores | Enables simultaneous sampling of two analog channels with matched timing and gain - critical for phase-sensitive motor control and I/Q demodulation. |
| Flexible analog input modes | Supports fully differential, pseudo-differential bipolar, and pseudo-differential unipolar signals without external switches or configuration registers - reduces BOM and layout complexity. |
| Onboard reference with low drift | 20 ppm/°C max TC over –40°C to +85°C ensures stable full-scale calibration across industrial temperature range without external trimming. |
| LVDS/CMOS dual-mode interface | Configurable via single pin (Pin 25) to support either low-noise differential signaling (LVDS) or low-voltage CMOS - adapts to host processor I/O capabilities. |
| Low-power nap/sleep modes | Reduces current to 5 µW in sleep mode - extends battery life in portable remote data acquisition systems while retaining fast wake-up (<10 ms). |
Applications
| High-Speed Motor Control | Optical Network Monitoring |
|---|---|
Use Scenario: Real-time sampling of current and back-EMF in three-phase BLDC motors for field-oriented control (FOC). IC Role / Device Role / Timing Role: Dual-channel ADC captures synchronized current and voltage waveforms at 5 Msps with <172 ns conversion time and matched aperture delay. Use Value: Enables precise torque ripple suppression and dynamic response improvement via closed-loop feedback with sub-microsecond latency. | Use Scenario: Digitizing photodiode output and laser bias monitor signals in coherent optical transceivers. IC Role / Device Role / Timing Role: Simultaneous acquisition of analog monitoring channels with 80 dB SNR and 85 dB THD at 2.2 MHz. Use Value: Supports accurate real-time power level calibration and fault detection without external amplification or filtering stages. |
| Industrial Data Acquisition | Communications Baseband Processing |
Use Scenario: Remote sensor node measuring vibration, temperature, and strain in predictive maintenance systems. IC Role / Device Role / Timing Role: Low-power dual ADC operating from 3.3 V supply with nap mode (2.85 mA) and sleep mode (1 µA) for energy-constrained deployments. Use Value: Extends battery life beyond 5 years while maintaining 14-bit resolution and no missing codes across –40°C to +85°C. | Use Scenario: Digitizing I/Q baseband signals in software-defined radio (SDR) front-ends and 5G small-cell receivers. IC Role / Device Role / Timing Role: High-linearity dual ADC with 88 dB SFDR and 10 MHz linear bandwidth for wideband signal capture. Use Value: Preserves signal integrity for complex modulation schemes (e.g., 256-QAM) without requiring oversampling or dithering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7960BCPZ-RL7 | 18-bit resolution, 5 Msps, but single-channel; requires external reference and separate digital interface per channel. | Not suitable for simultaneous dual-channel acquisition; better for ultra-high-precision single-signal measurement. | Select when absolute precision > speed and channel count; avoid when inter-channel timing matching is required. |
| ADS8864IDRCT | 16-bit, 1 Msps, single-supply 3 V, SPI-only CMOS interface; no LVDS option or internal reference. | Limited to lower-speed industrial sensing; lacks wide common mode range and high-temp qualification. | Choose for cost-sensitive, low-power, single-channel applications where 5 Msps and –40°C to +85°C are not required. |
Compared with AD7960BCPZ-RL7 and ADS8864IDRCT, the LTC2323IUFD-14#PBF uniquely delivers dual-channel 14-bit + sign conversion at 5 Msps with integrated reference, LVDS/CMOS flexibility, and industrial temperature range - making it optimal for space-constrained, timing-critical embedded systems requiring synchronized analog capture.
Availability
LTC2323IUFD-14#PBF 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 support, and guaranteed industrial temperature grade.
Supply support for LTC2323IUFD-14#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 semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC2323IUFD-14#PBF belongs to the Linear Technology high-speed precision ADC product line, designed specifically for demanding data acquisition systems requiring simultaneous dual-channel sampling, low noise, and robust operation across extended temperature ranges.
FAQ
What is the maximum sampling rate supported by the LTC2323IUFD-14#PBF?
The LTC2323IUFD-14#PBF supports a maximum sampling rate of 5 Msps per channel, with guaranteed timing performance including 171.5 ns conversion time and 200 ns minimum cycle time. This rate is maintained across the full –40°C to +85°C operating range and applies to both channels simultaneously without interleaving or performance degradation.
Does the LTC2323IUFD-14#PBF require an external reference?
No, the LTC2323IUFD-14#PBF integrates a low-drift, temperature-compensated 2.048 V or 4.096 V reference buffer. REFOUT1 and REFOUT2 pins provide buffered outputs, and REFINT (Pin 28) can disable the internal buffers to allow connection of an external reference between 1.25 V and VDD.
How does the LTC2323IUFD-14#PBF handle pseudo-differential input configurations?
The LTC2323IUFD-14#PBF natively supports pseudo-differential bipolar (e.g., AIN1+ = VREF/2, AIN1– = signal) and unipolar (e.g., AIN1– = GND, AIN1+ = signal) modes without configuration. Its transfer function automatically adjusts code span: 214 codes for pseudo-differential, 215 for fully differential - all with no missing codes at 14 bits.
What are the power consumption modes of the LTC2323IUFD-14#PBF?
The LTC2323IUFD-14#PBF offers three power states: active (38 mW/ch at 5 V), nap (9–25 mW depending on mode), and sleep (1–5 µW). Sleep mode retains register state and reference bias; wake-up time is <10 ms. Power states are controlled via CNV timing and internal logic - no dedicated control pins required.
Can the LTC2323IUFD-14#PBF operate with 1.8 V I/O voltage?
Yes, the LTC2323IUFD-14#PBF supports 1.8 V to 2.5 V I/O voltage via the OVDD supply (Pin 14). All digital inputs (CNV, SCK) and outputs (SDO, CLKOUT) are referenced to OVDD, enabling direct interfacing with 1.8 V FPGAs or processors without level shifters - confirmed across the full –40°C to +85°C range.
LTC2323IUFD-14#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:
- 14
- 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-14#PBF FAQ
1.How can I place an order for LTC2323IUFD-14#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2323IUFD-14#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-14#PBF reliable?
The price and inventory of LTC2323IUFD-14#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-14#PBF is usually 5 days.
3.What payment methods are accepted for LTC2323IUFD-14#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2323IUFD-14#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2323IUFD-14#PBF?
LTC2323IUFD-14#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2323IUFD-14#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-14#PBF?
For technical support, including LTC2323IUFD-14#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2323IUFD-14#PBF requirements.
6.How does Aetrix verify that LTC2323IUFD-14#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2323IUFD-14#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-14#PBF meets industry standards.
7.What is the process for return or replacement of LTC2323IUFD-14#PBF?
All LTC2323IUFD-14#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2323IUFD-14#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-14#PBF part is unused and in its original packaging.
Return procedure for LTC2323IUFD-14#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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