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Analog Devices Inc. LTC2333HLX-18#PBF
- Part No.:
- LTC2333HLX-18#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-LQFP
- Datasheet:
-
LTC2333HLX-18#PBF.pdf
- Description:
- IC ADC 18BIT SAR 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:256
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Product details
Overview
LTC2333HLX-18#PBF from Analog Devices is an 18-bit, 8-channel buffered SAR ADC with ±10.24V differential input range, 800ksps throughput, and 96.4dB SNR. It features SoftSpan™ programmable input ranges (±10.24V/0–10.24V/±5.12V/0–5.12V), integrated 4.096V reference buffer, and rail-to-rail input overdrive tolerance. It serves as a high-precision front-end digitizer in industrial process control systems requiring wide common-mode range and low leakage.
For engineers reviewing the LTC2333HLX-18#PBF datasheet, LTC2333HLX-18#PBF pinout, LTC2333HLX-18#PBF application, or LTC2333HLX-18#PBF equivalent, this page delivers verified specifications, package mapping, channel sequencing behavior, SPI/LVDS interface timing, and temperature-grade–specific performance data for H-grade (–40°C to +125°C) operation.
Technical Context
The LTC2333HLX-18#PBF implements a successive approximation register (SAR) architecture with fully differential picoamp-input analog buffers, enabling direct connection to high-impedance sensors without external signal conditioning. Its 128dB CMRR and –125dB active crosstalk support simultaneous multi-channel acquisition in noisy industrial environments.
It supports dual serial interfaces: pin-selectable CMOS (1.8V–5V OVDD) and LVDS, with independent timing parameters for each mode. The programmable sequencer allows automatic cycling across all eight channels and SoftSpan ranges without host intervention, reducing CPU overhead in PLC and test equipment applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 18-bit with guaranteed no missing codes - ensures full dynamic range utilization in precision measurement. |
| Sampling Rate | 800ksps maximum - supports real-time monitoring of fast transients in motor control and power quality analyzers. |
| INL (Max) | ±3 LSB over ±10.24V range - enables <0.001% absolute accuracy for calibration-critical instrumentation. |
| SNR (Typ) | 96.4dB at 2kHz - delivers >15.7 effective bits for high-fidelity signal capture in audio-grade test gear. |
| Input Leakage (H-grade) | 500pA at 85°C, 12nA at 125°C - preserves signal integrity when interfacing with megohm-level sensor sources. |
| Common Mode Range | 30VP-P, VEE+4V to VCC–4V - accommodates direct connection to ±15V op-amp outputs or isolated field transducers. |
| Power Dissipation | 268mW typical at 800ksps - balances performance and thermal management in compact industrial modules. |
Pinout & Package
48-lead (7mm × 7mm) plastic LQFP package (LX), thermally enhanced with exposed pad (not electrically connected). Pinout validated per Linear Technology (Analog Devices) datasheet revision 233318f, Figure "PIN CONFIGURATION".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN0+ to IN7+ | Differential analog input positive | High-impedance (≥1TΩ), buffered inputs accepting ±10.24V with 30VP-P common-mode range. |
| IN0– to IN7– | Differential analog input negative | Matched to corresponding IN+ pins; enables true bipolar, unipolar, or arbitrary common-mode drive configurations. |
| VCC / VEE | Analog supply rails | Wide-range bipolar supplies: VCC = +7.5V to +38V, VEE = –16.5V to 0V - supports legacy ±15V and extended industrial rails. |
| VDD / OVDD | Digital core / I/O supply | VDD = 4.75–5.25V (core logic); OVDD = 1.71–5.25V (CMOS) or 2.375–5.25V (LVDS) - enables mixed-voltage system integration. |
| REFBUF / REFIN | Reference buffer output / input | REFBUF = 4.096V (typ), 2.5–5V programmable; REFIN accepts 1.25–2.2V external reference or disables internal buffer. |
| CS / CNV / BUSY / SDO / SCKO / SCKI / SDI | Serial interface control & data | Supports SPI-compatible CMOS or differential LVDS I/O; CNV initiates conversion; BUSY indicates active conversion cycle. |
| PD | Power-down control | Active-high signal reduces current to ≤0.68μA (H-grade) - enables ultra-low-power sleep modes in battery-backed systems. |
Key Features
| Feature | Design Value |
|---|---|
| SoftSpan™ programmable input ranges | Per-conversion selection among ±10.24V, 0–10.24V, ±5.12V, 0–5.12V, ±12.5V, 0–12.5V, ±6.25V, 0–6.25V - eliminates external gain switching in multi-sensor systems. |
| Integrated reference and buffer | 4.096V buffered output with ±20ppm/°C drift - removes need for external precision reference and driver amplifier. |
| Rail-to-rail input overdrive tolerance | Withstands ±(VCC–VEE) differential overvoltage without corruption - protects against transient surges in harsh EMI environments. |
| Programmable sequencer with no-latency control | Automatically cycles through up to 8 channels and ranges without host CPU involvement - reduces firmware complexity in cyclic data loggers. |
| 128dB CMRR and –125dB active crosstalk | Enables simultaneous sampling of high-common-mode signals (e.g., motor phase currents) without inter-channel interference. |
Applications
| Industrial Process Control | Programmable Logic Controllers (PLCs) |
|---|---|
|
Use Scenario: Digitizing 4–20mA loop outputs, thermocouple voltages, and strain gauge bridges in chemical plant DCS cabinets. IC Role / Device Role / Timing Role: Primary 18-bit front-end ADC with integrated buffering and reference, handling 8 analog inputs per module with synchronized sampling. Use Value: Eliminates external op-amps and references, reducing BOM count by ≥4 components per channel while maintaining ±0.001% linearity over –40°C to +125°C. |
Use Scenario: High-density I/O modules acquiring voltage/current inputs from field devices in factory automation racks. IC Role / Device Role / Timing Role: Multi-channel SAR ADC with programmable sequencer, enabling deterministic scan times under real-time OS scheduling. Use Value: 800ksps aggregate throughput supports ≤125μs per channel scan, meeting IEC 61131-3 cycle time requirements for safety-critical motion control. |
| Test and Measurement Equipment | High-Voltage Sensor Interfaces |
|
Use Scenario: Precision waveform capture in portable power analyzers measuring harmonics and THD in 3-phase inverters. IC Role / Device Role / Timing Role: Differential input ADC with 96.4dB SNR and –110dB THD, capturing clean 2kHz fundamentals amid switching noise. Use Value: 96.4dB SNR enables >15.7 ENOB at 2kHz, supporting Class A power quality compliance (IEC 61000-4-30 Ed.3). |
Use Scenario: Direct digitization of isolated ±10V sensor outputs from HV battery monitors or insulation testers. IC Role / Device Role / Timing Role: Buffered ADC accepting 30VP-P common-mode range, interfacing to isolated amplifiers without level-shifting. Use Value: 500pA input leakage at 85°C prevents DC offset drift in long-integration measurements of microamp-level leakage currents. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision, multi-channel SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7606C-18 | 18-bit, 8-channel, ±10V input, but uses internal oscillator and fixed ±10V range; no SoftSpan flexibility; 265ksps max rate. | Best suited for cost-sensitive, lower-speed data loggers where range reconfiguration is unnecessary. | Select when fixed-range, lower-power (120mW) operation suffices and sequencer autonomy is not required. |
| ADS8688IPWR | 18-bit, 8-channel, software-configurable ranges (±10.24V/±5.12V/etc.), but only 500ksps max; single-supply (5V) analog interface; no LVDS option. | Ideal for embedded systems with tight PCB space and no need for bipolar analog supplies or differential signaling. | Choose when board-level simplicity (single 5V rail) and TI's WEBENCH® support outweigh need for 800ksps or LVDS noise immunity. |
Compared with AD7606C-18 and ADS8688IPWR, the LTC2333HLX-18#PBF uniquely combines 800ksps throughput, on-the-fly SoftSpan range switching, LVDS/CMOS interface selectability, and H-grade temperature rating - making it the only option for high-dynamic-range, high-reliability industrial DAQ operating continuously at +125°C ambient.
Availability
LTC2333HLX-18#PBF is available at Aetrix Electronics and suitable for industrial process control, programmable logic controllers, and test and measurement equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2333HLX-18#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 technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2333-18 product line was designed specifically for high-accuracy, multi-channel data acquisition in harsh industrial environments - emphasizing wide input common-mode range, low leakage, and robust serial interface options.
FAQ
What is the operating temperature range of the LTC2333HLX-18#PBF?
The LTC2333HLX-18#PBF is rated for –40°C to +125°C ambient operation, validated per the H-grade specification in the official datasheet. This includes full performance compliance for key parameters including INL (±3 LSB), SNR (96.4dB typ), and input leakage (12nA max at 125°C), making it suitable for under-hood automotive sensing or high-temperature industrial enclosures where standard commercial or industrial grade parts would fail.
Does the LTC2333HLX-18#PBF require external reference components?
No, the LTC2333HLX-18#PBF integrates a precision 4.096V reference buffer (REFBUF) with ±20ppm/°C drift and supports overdriving REFIN with an external 1.25–2.2V reference. When using the internal reference, no external components are needed - the device operates with only decoupling capacitors (0.1µF on REFIN, 47µF on REFBUF). This eliminates BOM cost and layout area typically required for discrete reference ICs and buffers.
How does the SoftSpan™ feature work on the LTC2333HLX-18#PBF?
The SoftSpan™ feature on the LTC2333HLX-18#PBF allows per-conversion configuration of input range via SPI register writes - selecting among eight combinations: ±10.24V, 0–10.24V, ±5.12V, 0–5.12V, ±12.5V, 0–12.5V, ±6.25V, or 0–6.25V. This is implemented in hardware without latency penalty, enabling dynamic adaptation to varying sensor output levels within a single acquisition sequence - for example, reading both a ±10V pressure transducer and a 0–5V temperature sensor on adjacent channels.
Can the LTC2333HLX-18#PBF interface directly with isolated signal chains?
Yes, the LTC2333HLX-18#PBF supports direct connection to isolated analog front-ends due to its 30VP-P input common-mode range (VEE+4V to VCC–4V) and rail-to-rail input overdrive tolerance. When paired with isolated amplifiers such as the ADuM3190 or ISO124, it accepts outputs referenced to floating domains without level-shifting circuitry - simplifying design of Class I insulated measurement systems compliant with IEC 61000-4-5 surge immunity requirements.
What serial interface options does the LTC2333HLX-18#PBF support?
The LTC2333HLX-18#PBF supports two pin-selectable serial interfaces: CMOS (1.8V–5V OVDD) and LVDS. LVDS mode provides superior noise immunity in electrically noisy industrial settings, with differential signaling, 350mV VID, and 100Ω termination. CMOS mode offers simpler routing and compatibility with standard microcontroller SPI peripherals. Both modes share identical command structure but have distinct timing specs - e.g., LVDS SCKI period minimum is 4ns vs. 10ns for CMOS.
LTC2333HLX-18#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- SoftSpan™
- Package/Case:
- 48-LQFP
- Packaging:
- Tray
- Product Status:
- Active
- Number of Bits:
- 18
- Sampling Rate (Per Second):
- 800k
- Number of Inputs:
- 8
- Input Type:
- Differential
- Data Interface:
- LVDS - Serial
- Configuration:
- MUX-ADC
- Ratio - S/H:ADC:
- 0:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 7.5V ~ 38V
- Voltage - Supply, Digital:
- 4.75V ~ 5.25V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 48-LQFP (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2333HLX-18#PBF FAQ
1.How can I place an order for LTC2333HLX-18#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2333HLX-18#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 LTC2333HLX-18#PBF reliable?
The price and inventory of LTC2333HLX-18#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2333HLX-18#PBF is usually 5 days.
3.What payment methods are accepted for LTC2333HLX-18#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2333HLX-18#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2333HLX-18#PBF?
LTC2333HLX-18#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2333HLX-18#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 LTC2333HLX-18#PBF?
For technical support, including LTC2333HLX-18#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2333HLX-18#PBF requirements.
6.How does Aetrix verify that LTC2333HLX-18#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2333HLX-18#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 LTC2333HLX-18#PBF meets industry standards.
7.What is the process for return or replacement of LTC2333HLX-18#PBF?
All LTC2333HLX-18#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2333HLX-18#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 LTC2333HLX-18#PBF part is unused and in its original packaging.
Return procedure for LTC2333HLX-18#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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